4,286 results
Search Results
2. The fauna of aquatic invertebrates in the river impacted by wastewaters from the pulp and paper industry (Komi Republic).
- Author
-
Baturina, Maria, Kononova, Olga, Fefilova, Elena, and Loskutova, Olga
- Subjects
AQUATIC invertebrates ,INDUSTRIAL wastes ,PAPER industry ,BIOINDICATORS - Abstract
Background Invertebrates are important elements of aquatic ecosystems and play a crucial role in the transformation of matter and energy in continental water bodies. Communities of aquatic invertebrates are characterised by high sensitivity to pollution by nutrients and toxic substances and acidification of water bodies; they serve as good bioindicators of the quality of the aquatic environment and impacts on hydroecosystems. All hydrobionts participate in the processes of self-purification of water bodies. The presented dataset provides information on the aquatic invertebrate community of a large northern river. During 2018-2020, we collected data on changes in the quantitative indicators of the development of benthic and planktonic communities, as well as the species diversity of their fauna. The dataset combines information about the occurrence and abundance of benthic and planktonic invertebrates and summarises data of aquatic invertebrate species found in the Vychegda River in the zone of influence from the pulp and paper mill. New information The presented dataset is part of a monitoring programme of the river ecosystems in the production area of Mondi Syktyvkar JSC (the European North-East of Russia, Komi Republic). The dataset describes the structure of benthic invertebrate and plankton communities in the Northern Dvina River Basin. The data on the finding and abundance of large taxa of aquatic invertebrates and species of some groups: Oligochaeta, Cladocera, Copepoda, Rotifera, Ephemeroptera, Plecoptera and Trichoptera are presented. In total, the resource includes 8720 findings of invertebrates, of which 6041 are for zoobenthos organisms and 2679 for zooplankton organisms. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
3. Биологични и стопански показатели на хибриди в първо поколение тютюн Бърлей.
- Author
-
Дюлгерски, Йовко, Божинова, Радка, Николов, Николай, and Николова, Виолета
- Subjects
BIOINDICATORS ,ECONOMIC indicators ,INDICATORS & test-papers ,PRINCIPAL components analysis ,BIOMETRY - Abstract
An assessment is made the biological and economical chemical indicators of 11 samples Burley tobacco, which 10 new promising hydrides in first generation and standard Pliska 2002 variety. As a result, the study found that the most favorable biometric indicators is presented Hybrid 1595A. With the short vegetative period is characterized Hybrid 1594, and the longest such – standard Pliska 2002 variety. All new selection lines excel at length of the vegetative period standard Pliska 2002 variety. The highest yield is represented by Hybrid 1595A, followed by Hybrid 1593. The highest percentage of first grade is derived from Hybrid 1593А, which gives the lowest percentage of third grade. With favorable ratio of grades is formed and Hybrid 1593. All new lines superior the standard variety Pliska 2002, to as yield, so and percentage of first grade. The studied hybrids, according to their biometric indicators, are grouped into two clusters, and two main components influence the clustering of the hybrids and explain 77.17% of the total variation. Depending on their economic indicators, the hybrids are arranged in two clusters, and in them, too, two main components are the cause of 89.27% of the total variation. Complex assessment of biological and economic indicators shows that with the best parameters differs Hybrid 1593, and work with it should continue with production testing. All new lines superior the standard variety Pliska 2002, to as yield, so and percentage of first grade, which is an indicator of the success of the selection work. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Multifactor Prediction of Ecological Indicators of Production of Chemical Fibers Based on Neural Networks.
- Author
-
Pimenov, V. I. and Pimenov, I. V.
- Subjects
- *
BIOINDICATORS , *INDICATORS & test-papers , *EMISSION control , *WEATHER , *FORECASTING - Abstract
The problem of emission control in chemical fiber industry and construction of multifactor model of pollution index prediction is studied. A neural network method that makes it possible to derive regularities of a unidimensional series for PM 2.5 and simultaneously determine the influence of a set of factors of weather conditions is described. To reduce the complexity of the model, instead of the range of factors of influence, its main components are used. The interconnection of the number of factors of influence, depth of retrospective sampling, type and scale of neural network, and accuracy of prediction is studied. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
5. Bacterial communities in water and sediment shaped by paper mill pollution and indicated bacterial taxa in sediment in Daling River.
- Author
-
Guo, Jianguo, Zhao, Longhao, Lu, Weihong, Jia, Hongliang, and Sun, Yeqing
- Subjects
- *
BACTERIAL population , *SEDIMENTS , *PAPER mills , *BIOLOGICAL classification , *BIOINDICATORS - Abstract
Effluents from paper mills are highly toxic and are a major source of aquatic pollution. In this study, we collected water and sediment samples to examine the microbial communities using denaturing gradient gel electrophoresis and identified bacterial taxa greatly affected by paper mill pollution using next-generation sequencing data. Our results indicated that bacterial communities in downstream sediments were similar to those in paper mill discharge sites, indicating obvious effects of pollution, while bacterial communities in downstream water samples showed similar profiles to those in upstream sites, both being quite different from the bacterial communities in paper mill discharge sites. This was possibly because of the short contact period. In addition, bacterial communities in the estuary were quite different from those in other water and sediment samples, which was owing to the special habitat type. Considering the storage of paper mill pollutants in sediment and the significant effect on shifts in bacterial communities, we selected Clostridia and Epsilonproteobacteria at the class level and Fusibacter and Desulfobulbus at the genus level as bacterial indicators of paper mill pollution. To monitor the remediation of polluted aquatic environments, we propose Sphingobacteria , Alphaproteobacteria , Actinobacteria , Subdivision3 , Planctomycetacia and Verrucomicrobiae at the class level and Bacillus , Steroidobacter , Nocardioides , Terrimonas , Pirellula and Methylibium at the genus level. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
6. New techniques for studying competition by Rhizobia and for assessing nitrogen fixation in the field
- Author
-
Wilson, Kate J., Peoples, Mark B., Jefferson, Richard A., Ladha, J. K., editor, and Peoples, M. B., editor
- Published
- 1995
- Full Text
- View/download PDF
7. Water quality and phytoplankton as indicators pollution in Ir H. Djuanda reservoir, West Java Indonesia.
- Author
-
Mulyani, Isma, Aryani, Desy, Sugianti, Yayuk, and Astuti, Lismining Pujiyani
- Subjects
WATER quality ,PHYTOPLANKTON ,BIOINDICATORS ,POLLUTION ,INDICATORS & test-papers ,RESERVOIRS - Abstract
Changes in water quality can be shown in physical, chemical and biological indicators. The presence of phytoplankton can be used as a bioindicator to evaluate changes in water quality and fertility in a water. The purpose of this study was to determine the abundance and biological index of phytoplankton in the Ir.H. Djuanda Reservoir. The method used is a survey. Types of phytoplankton obtained in the results of the study consisted of 6 classes and 36 species. The average abundance of phytoplankton in the waters of the Ir. H. Djuanda ranged from 23809 – 98810 cells/l. The results of the analysis of diversity (H') = 1.78 – 2.53, uniformity index (E) = 0.62 – 0.8 and dominance index (C) = 0.12 – 0.28. These results indicate that the diversity of phytoplankton in the Ir. H. Djuanda has moderate diversity, high uniformity and no dominance. Based on the value of the diversity index, it shows that the reservoir is classified as lightly polluted. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
8. Paper-based ELISA to rapidly detect Escherichia coli.
- Author
-
Shih, Cheng-Min, Chang, Chia-Ling, Hsu, Min-Yen, Lin, Jyun-Yu, Kuan, Chen-Meng, Wang, Hsi-Kai, Huang, Chun-Te, Chung, Mu-Chi, Huang, Kui-Chou, Hsu, Cheng-En, Wang, Chun-Yuan, Shen, Ying-Cheng, and Cheng, Chao-Min
- Subjects
- *
ENZYME-linked immunosorbent assay , *ESCHERICHIA coli , *BIOINDICATORS , *WATERBORNE infection , *POSTOPERATIVE care , *COLORIMETRY - Abstract
Escherichia coli is a generic indicator of fecal contamination, and certain serotypes cause food- and water-borne illness such as O157:H7. In the clinic, detection of bacteriuria, which is often due to E. coli , is critical before certain surgical procedures or in cases of nosocomial infection to prevent further adverse events such as postoperative infection or sepsis. In low- and middle-income countries, where insufficient equipment and facilities preclude modern methods of detection, a simple, low-cost diagnostic device to detect E. coli in water and in the clinic will have significant impact. We have developed a simple paper-based colorimetric platform to detect E. coli contamination in 5 h. On this platform, the mean color intensity for samples with 10 5 cells/mL is 0.118±0.002 ( n =4), and 0.0145±0.003 ( P <0.01⁎⁎) for uncontaminated samples. This technique is less time-consuming, easier to perform, and less expensive than conventional methods. Thus, paper-based ELISA is an innovative point-of-care diagnostic tool to rapidly detect E. coli , and possibly other pathogens when customized as appropriate, especially in areas that lack advanced clinical equipment. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
9. Utilização de bioindicadores em diferentes hidrossistemas de uma indústria de papeis reciclados em Governador Valadares - MG Use of biological indicators in different hydrosystems of an industry of recycled papers in Governador Valadares - MG
- Author
-
Ivan César de Oliveira Bastos, Ivana Cristina Lovo, César Augusto Maximiano Estanislau, and Leandro Moraes Scoss
- Subjects
sistema sapróbico ,saprobiotic system ,paper industry ,Bioindicadores ,Bioindicators ,phytoplankton ,lcsh:Environmental technology. Sanitary engineering ,lcsh:TA170-171 ,fitoplâncton ,fábrica de papel ,lcsh:TD1-1066 ,lcsh:Environmental engineering - Abstract
A bacia do rio Doce, quinta maior do estado de Minas Gerais, mostra-se bastante degradada com impactos diretos na vegetação, no solo, na biodiversidade e na qualidade das águas. Sabendo-se da importância da bacia em questão, a utilização de bioindicadores aquáticos representa uma das formas mais modernas para se detectar níveis diferenciados de carga orgânica, sendo premente seu estudo e aplicação. Este trabalho propõe a utilização de organismos microscópicos como o fitoplâncton que, aliados a parâmetros físico-químicos, poderiam indicar poluição em seus diferentes níveis. A metodologia utilizada foi estabelecida conforme Sladecek (1973) e Greenberg (1992). Foram amostradas sete estações de coleta no ribeirão Capim, na área de influência de uma empresa de papéis reciclados, objetivando-se detectar possíveis impactos na cadeia trófica. As análises mostraram a ocorrência de 41 taxa, destacando-se a predominância dos gêneros Oscylatoria a Anacystis pertencentes à divisão Cyanophyta nos ambientes de maior estresse, e organismos da divisão Chlorophyta nos demais ambientes amostrados. Observou-se ainda a capacidade de adaptação de alguns gêneros, entre eles Euglena e Navicula, os quais se fizeram presentes em quase todos os ambientes amostrados.The Rio Doce’s basin, which is the fifth greatest basin of the state of Minas Gerais, Brazil, is severely degraded by the direct impacts on vegetation, soil, biodiversity, and water quality. Due to the importance of this basin, the use of aquatic bioindicators is one of the most modern methods to detect differentiated levels of organic matter, and its study and application is a relevant issue. This paper proposes the use microscopic organisms such phytoplankton, which combined with physicochemical parameters, would indicate pollution on its different levels. The applied methodology was according to Sladecek (1973) and Greenberg (1992). It was sampled seven collect stations on the Capim stream, in an area under the influence of a recycling paper industry, being the objective to assess the possible impacts on the trophic chain. The analysis presented the existence of 41 taxa, emphasizing the predominance of Oscilatoria and Anacystis genus, that belong to the Cyanophyta division, on more disturbed areas, while organisms from the Chlorophyta division were identified on the other sampled locations. Moreover, it was observed the ability that some genus like the Euglena and Navicula have to adapt to their environment, since these organisms were present on almost all samples.
- Published
- 2006
10. Questioning the roles of resources nutritional quality in ecology.
- Author
-
Danger, Michael, Bec, Alexandre, Spitz, Jérôme, and Perga, Marie‐Elodie
- Subjects
BIOINDICATORS ,ECOSYSTEM dynamics ,BIOMASS energy ,FOOD chains ,PREDATION ,INDICATORS & test-papers ,LANDSCAPES - Abstract
Our understanding of ecosystem functioning is strongly linked to the study of predator–prey relationships and food web structures. However, trophic ecology has often focused on identifying taxonomic relationships and quantifying the biomass or energy ingested by consumers, but has often failed to integrate the importance of the nutritional quality of resources in ecological dynamics. Underlying this gap is the multi‐dimensional nature of resource quality which has hampered any consensus on the definition of resource nutritional quality. In this special issue, we aimed at gathering a subset of articles exemplifying the diversity of variables by which resources quality is quantified, the diversity of research topics that can be tackled in ecology – from physiological or evolutionary aspects to ecosystem processes – and propose some perspectives on the integration of nutritional quality within broader ecological concepts. Using a semi‐automated literature analysis, we map the current landscape of the 'resources nutritional quality' research of the last 30 years. We depict how it has been quantified through physical, biological or chemical indicators, the use of these parameters being largely dependent on the type of ecosystem studied and on the investigated ecological process. We then position the articles published in this special issue of Oikos within this landscape, showing they cover a small but relatively well representative subset of the domains of resources quality‐related issues. Articles in this special issue browse a range of individual and population‐level approaches (embracing evolutionary questions) to community related questions, include methodological issues and ecosystem‐wide approaches using trophic quality indicators as tracers of resources origin. Based on these studies and on the literature review, we identify a non‐exhaustive list of challenges and perspectives of research that we consider of highest priority in the large topic of trophic ecology. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
11. ENVIRONMENTAL INTEGRITY OF NORTHERN PLAIN REGION OF RIVER UMTREW (DIGARU), NORTH EAST INDIA.
- Author
-
Sarmah, N., Nath, D., Nath, R. J., Mudoi, L. P., Bhagabati, S. K., and Dutta, R.
- Subjects
ALLUVIAL plains ,WATER quality ,BIOINDICATORS ,WATER supply ,INDICATORS & test-papers - Abstract
Evaluation of river water quality is one of the most important aspects of water resource assessment. River Umtrew (Digaru), which originated in Meghalaya and runs down to Assam plains before merging with the mighty Brahmaputra, is one of the main drainage systems of this region. Using some physical, chemical and biological indicators of river water, the current study attempted to assesses its environmental integrity. The current study provides a clear image of the health of the river, as well as differences in the river's pollution levels at various locations. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
12. Oxidative stress and bioindicators of reproductive function in fish exposed to pulp and paper mill effluents
- Author
-
Oakes, Kenneth Donald and van der Kraak, Glen J.
- Subjects
fish ,digestive, oral, and skin physiology ,bioindicators ,oxidative stress ,reproductive function ,pulp and paper mill effluents ,complex mixtures - Abstract
The objective of my thesis was to evaluate if reactive oxygen species (ROS) and oxidative stress were elevated in fish exposed to pulp and paper mill effluent, and if resultant damage from ROS were contributing to effects on reproductive performance. Overall, changes in 2-thiobarbituric acid reactive substances (TBARS), fatty acyl-CoA oxidase (FAO) and cytochrome P4501A (CYP1A) activities, hepatic free iron and ascorbic acid in resident fish exposed to pulp and paper mill effluent indicate ROS-induced damage is common. I have demonstrated ROS induced oxidative stress in wild fish is dependent on the presence of bioactive effluent constituents, the degree of effluent dilution in each receiving environment, the maturity of exposed fish, and the season of collection. The onset of oxidative stress in naive fish varied widely with responses occurring within 4-21 d of pulp and paper mill effluent exposure. Most biochemical changes associated with oxidative stress were not permanent; amelioration of effects to control values were often obvious within 9 d. Exposure of fathead minnow to perfluorooctanoic acid (PFOA), a compound which induces FAO activity, produced reductions in circulating steroids similar to those seen in white sucker resident below pulp and paper mill effluent discharges. While ferric nitrilotriacetate administration can produce marked increases in oxidative stress and impairments in steroidogenesis, the relationship between oxidative damage and levels of circulating steroids in pulp and paper mill effluent exposed fish was often confounded by other bioactive effluent constituents, as demonstrated by marked increases in circulating sex steroids and vitellogenin production. Recovery of circulating steroids following removal of effluent was not as marked as that observed for oxidative stress endpoints, suggesting a longer-term impairment of biosynthetic capacities by effluent constituents occurred. Increases in hepatic and gonadal oxidative damage are common in fish resident below pulp and paper mill effluent discharges, as are perturbations in circulating sex steroids and, to a lessor extent, reductions in gonad size. This thesis provides evidence that effluent-induced ROS damage is a plausible contributory mechanism in producing impaired reproductive responses in pulp and paper mill effluent exposed fish.
- Published
- 2004
13. Trapping cells in paper for white blood cell count.
- Author
-
Zhang, Yi, Bai, Jianhao, Wu, Hong, and Ying, Jackie Y.
- Subjects
- *
LEUCOCYTES , *BIOINDICATORS , *HEALTH impact assessment , *HEALTH outcome assessment , *GOLD nanoparticles - Abstract
White blood cell count is an important indicator of each individual's health condition. An abnormal white blood cell count usually results from an infection, cancer, or other conditions that trigger systemic inflammation responses. White blood cell count also provides predictive information on the incidence of cardiovascular diseases and Type 2 diabetes. Therefore, monitoring white blood cell count on a regular basis can potentially help individuals to take preventive measures and improve healthcare outcomes. Currently, white blood cell count is primarily conducted in centralized laboratories, and it requires specialized equipment and dedicated personnel to perform the test and interpret the results. So far there has been no rapid test that allows white blood cell count in low-resource settings. In this study, we have demonstrated a vertical flow platform that quantifies white blood cells by trapping them in the paper. White blood cells were tagged with gold nanoparticles, and flowed through the paper via a small orifice. The white blood cell count was determined by measuring the colorimetric intensity of gold nanoparticles on the surface of white blood cells that were trapped in the paper mesh. Using this platform, we were able to quantify white blood cells in 15 μL of blood, and visually differentiate the abnormal count of white blood cells from the normal count. The proposed platform enabled rapid white blood cell count in low resource settings with a small sample volume requirement. Its low-cost, instrument-free operations would be attractive for point-of-care applications. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
14. 含油污泥热解残渣的生态安全评价方法研究.
- Author
-
孙瑄, 杨鹏辉, 鱼涛, 黄毅, 种法国, 屈撑囤, 李金灵, 郭志强, and 王超
- Subjects
TOXICITY testing ,CHEMICAL properties ,BIOINDICATORS ,INDICATORS & test-papers ,ENVIRONMENTAL security - Abstract
Copyright of Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
15. On-site monitoring of uranium in low level liquid waste streams using U-Br-PADAP strip indicator paper technique.
- Author
-
Ganesh, S., Velavendan, P., Pandey, N., Kamachi Mudali, U., and Natarajan, R.
- Subjects
- *
LIQUID waste , *URANIUM , *COLORIMETRY , *AMINOPHENOLS , *BIOINDICATORS , *BUFFER solutions - Abstract
A simple, rapid and selective colorimetric technique for the determination of low level concentration of uranium in nuclear waste streams is described. The proposed method is based on the intensity of U-Br-PADAP (Uranium-2-(5-Bromo-2-pyridylazo)-5-diethyl-aminophenol) colour formed on strip indicator paper. The effect of pH, concentration of chromogenic reagent, stability of the colour, volume of buffer solution and interference of metal ions were studied. The detection limit is 1 mg/L. Various uranium samples have been tested for the validation of the proposed method. The results obtained are reproducible and good agreement with those obtained by the standard technique. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
16. Stress-Related Bioindicator Anomalies in Feral Male Winter Flounder (Pleuronectes americanus) Exposed to Effluent from Two Pulp and Paper Mills in Newfoundland.
- Author
-
Khan, R. A.
- Subjects
WINTER flounder ,BIOINDICATORS ,EPIDERMAL diseases ,PAPER mills ,PULP mills ,FISHES - Abstract
The article cites a study conducted to ascertain the effect of the effluent on a number of biological variables including gonadal development in male winter flounder in the latter part of summer when induction occurs. It compared variables between samples collected near two mills and five reference sites. Significant differences in selected biological variables were observed in male winter flounder sampled near the two pulp and paper mills when compared to the reference sites. Macroscopic observations revealed that the percentage of skin lesions, consisting of fin necrosis and/or epidermal ulcers, metacercariae of Cryptocotyle lingua encapsulated in the epidermis and discoloration in the liver were significantly greater in fish sampled near the two mills at Birchy PulpCove and Port Harmon than at the reference locations.
- Published
- 2003
- Full Text
- View/download PDF
17. Consensus paper of the WFSBP Task Force on Biological Markers: Criteria for biomarkers and endophenotypes of schizophrenia part II: Cognition, neuroimaging and genetics.
- Author
-
Schmitt, Andrea, Rujescu, Dan, Gawlik, Micha, Hasan, Alkomiet, Hashimoto, Kenji, Iceta, Sylvain, Jarema, Marek, Kambeitz, Joseph, Kasper, Siegfried, Keeser, Daniel, Kornhuber, Johannes, Koutsouleris, Nikolaos, Lanzenberger, Rupert, Malchow, Berend, Saoud, Mohamed, Spies, Marie, Stöber, Gerald, Thibaut, Florence, Riederer, Peter, and Falkai, Peter
- Subjects
- *
BIOMARKERS , *BIOCHEMISTRY , *BIOINDICATORS , *SCHIZOPHRENIA , *MENTAL illness - Abstract
Objectives: Schizophrenia is a group of severe psychiatric disorders with high heritability but only low odds ratios of risk genes. Despite progress in the identification of pathophysiological processes, valid biomarkers of the disease are still lacking. Methods: This comprehensive review summarises recent efforts to identify genetic underpinnings, clinical and cognitive endophenotypes and symptom dimensions of schizophrenia and presents findings from neuroimaging studies with structural, functional and spectroscopy magnetic resonance imaging and positron emission tomography. The potential of findings to be biomarkers of schizophrenia is discussed. Results: Recent findings have not resulted in clear biomarkers for schizophrenia. However, we identified several biomarkers that are potential candidates for future research. Among them, copy number variations and links between genetic polymorphisms derived from genome-wide analysis studies, clinical or cognitive phenotypes, multimodal neuroimaging findings including positron emission tomography and magnetic resonance imaging, and the application of multivariate pattern analyses are promising. Conclusions: Future studies should address the effects of treatment and stage of the disease more precisely and apply combinations of biomarker candidates. Although biomarkers for schizophrenia await validation, knowledge on candidate genomic and neuroimaging biomarkers is growing rapidly and research on this topic has the potential to identify psychiatric endophenotypes and in the future increase insight on individual treatment response in schizophrenia. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
18. Grassland Ecosystem Services: Their Economic Evaluation through a Systematic Review.
- Author
-
Pergola, Maria, De Falco, Enrica, and Cerrato, Michele
- Subjects
BIOINDICATORS ,BIBLIOMETRICS ,SCIENCE databases ,ECOSYSTEM services ,LAND cover - Abstract
Grasslands provide a wide range of provision, support, regulation, and cultural ecosystem services (ESs), whose valuation methods can be grouped into three categories (ecological, sociocultural, and economic). The present manuscript aims to provide an overview of academic studies on grassland ESs and of the most used economic evaluation methods. To this end, a systematic and bibliometric review was conducted using the scientific database Scopus and the VOSviewer software. The results highlighted that China and the USA were the main countries with the highest number of publications regarding ESs provided by grasslands. The number of publications began to grow starting in 2005, thanks, perhaps, to the publication of influential documents, such as the Millennium Ecosystem Assessment, and the general increase in interest in ecological policy issues. The year 2023 had the highest number of documents in absolute (646), demonstrating the timeliness, importance, and relevance of this research topic. The most studied grassland ES has been carbon storage; however, a central role was played also by biodiversity. In this context, papers that estimated grassland ESs from an economic perspective represented only 3% of all papers that Scopus has returned. More than half of these referred to the use of equivalent coefficients to calculate the ES value of different land uses/land cover categories or, at most, of 11 types of ES. All this highlights the difficulty in estimating individual ESs provided by grasslands from an economic point of view and the greater propensity to use physical, chemical, and biological indicators. Consequently, the sustainable management of grasslands requires more studies on the economic evaluation of their ES, as well as environmental aspects in the economic accounting of governments, or to implement a support system for farms in delivering various ecosystem services. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Implications of paper vs stainless steel biological indicator substrates for formaldehyde gas decontamination.
- Author
-
Gordon, D., Madden, B., Krishnan, J., Klassen, S., Dalmasso, J., and Theriault, S.
- Subjects
- *
BIOINDICATORS , *FORMALDEHYDE , *DECONTAMINATION (From gases, chemicals, etc.) , *STAINLESS steel , *STEAM as a disinfectant - Abstract
This study was undertaken to determine the effectiveness of biological indicators currently being employed during formaldehyde decontamination. Data suggest that detectable amounts of formaldehyde are absorbed into the paper strips contained in currently used biological indicators. Absorbed formaldehyde has the potential to inhibit the growth of indicator spores, thus leading to false negative results. Indicators composed of either stainless steel carriers or paper strips were investigated to determine whether stainless steel carriers can be used as an alternative to paper strip indicators. Biological indicators were exposed to formaldehyde gas and were tested for the presence of formaldehyde and any possible inhibition of spore growth. Absorbed formaldehyde was detected in the paper strip carriers while no formaldehyde was detected from any of the stainless steel carriers. Exposed paper strips were found to inhibit growth of up to 1 × 10 spores while the stainless steel carriers did not inhibit the growth of spores. During decontamination, biological indicators composed of paper spore strips absorb formaldehyde and inhibit growth of any surviving spores. Stainless steel carriers do not absorb formaldehyde and are an ideal alternative substrate for biological indicators. The popular paper strip biological indicator can lead to false negative results during decontamination and is unsuitable for validating formaldehyde decontamination. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
20. Pine needles (Pinus sylvestris L.) as a bioindicator of sodium and calcium deposition in the area around pulp and paper mills at Kemi, Northern Finland.
- Author
-
Pöykiö, Risto, Kivilinna, Veli-Antti, and Nurmesniemi, Hannu
- Subjects
PINE needles ,BIOINDICATORS ,SODIUM ,CALCIUM ,PAPER mills ,PULPING - Published
- 2010
21. USE OF BENTHIC MACROINVERTEBRATES AS BIOINDICATORS OF WATER QUALITY IN THE BREB VALLEY CATCHMENT (MARAMUREȘ COUNTY).
- Author
-
ROSCA, OANA MARE, MARIAN, MONICA, PUSCAS, ALEXANDRA ERICA, POP, EDITA AGNETA, MARIAN, CLAUDIA, NASUI, DANIEL, MIHALESCU, LUCIA, and VOȘGAN, ZORICA
- Subjects
WATER quality ,INVERTEBRATES ,BIOINDICATORS ,INDICATORS & test-papers ,RIVER channels - Abstract
The present study was conducted during 2017-2018 in the river basin of the Breb Valley (Maramureș County), aiming to establish the quality of watercourses based on physical and chemical indicators and biological elements in the category of benthic macroinvertebrates. Most of the investigated stations are characterized by a good and very good ecological status, with low anthropogenic impact. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
22. Effects of pulp and paper mill effluent on fish: A temporal assessment of fish health across sampling cycles.
- Author
-
Barrett, Timothy J., Lowell, Richard B., Tingley, Maureen A., and Munkittrick, Kelly R.
- Subjects
- *
ENVIRONMENTAL engineering , *ENVIRONMENTAL monitoring , *PULP mill waste disposal , *META-analysis , *EFFLUENT quality , *ENVIRONMENTAL impact analysis , *FISH populations , *BIOINDICATORS , *FISHERY laws , *WATER pollution laws - Abstract
The Canadian environmental effects monitoring (EEM) program is a regulated, cyclical, industry-funded program designed to determine whether receiving water impacts exist when a mill is in compliance with its discharge limits. The results from three cycles of the fish monitoring program (1992 to 2004) are available from over 200 surveys of fish compared between sites located upstream and downstream of pulp and paper mill effluent outfalls. Previous meta-analyses have shown a national average response pattern across cycles characterized by an increase in endpoints measuring energy storage and growth and a decrease in a reproductive endpoint, consistent with a response of nutrient enrichment in combination with some form of metabolic disruption. Although the national average pattern of effects was temporally consistent, there was some variability in the magnitude of effects among cycles. Questions were raised as to whether the intercycle variability was due to changes in effluent quality or due, at least in part, to other factors. The present study compares responses over the first three cycles, and shows that the choice of sentinel species is likely to be a major contributing factor to the variability in observed effects. Subset analyses using studies from mills that used the same sentinel species across cycles reveal fairly uniform responses and little evidence of significant improvements in overall fish health from cycles one to three. However, a meta-analysis using 1991 data collected from 10 mills before the implementation of the EEM program and data from the same mills collected during cycles one to three of the program reveal significantly reduced effects on relative liver weight and potential improvements in other endpoints. Environ. Toxicol. Chem. 2010;29:440–452. © 2009 SETAC [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
23. Current Scientific Research Trends on Salivary Biomarkers: A Bibliometric Analysis.
- Author
-
Alam, Beenish Fatima, Nayab, Talha, Ali, Saqib, AlSheikh, Rasha, Khan, Asim Mustafa, Al Hinai, Muntasar T., and Farooq, Imran
- Subjects
SCIENTIFIC literature ,BIBLIOMETRICS ,EARLY diagnosis ,BIOMARKERS ,BIOINDICATORS - Abstract
Salivary biomarkers are indicators of many biological and pathological conditions and provide further information regarding the early detection of diseases. This bibliometric analysis aims to identify and evaluate the scientific literature addressing salivary biomarkers from a dental perspective, to identify the most prolific organizations, authors, journals, countries, and keywords used within this research domain. An electronic search was performed using Elsevier's Scopus database. From a total of 587 retrieved papers (published between 1997 and 2021), 399 were selected. For the data analysis and its visualization, the title of the articles, year of publication, countries, authors, journals, articles, and keywords were analyzed using Microsoft Excel and VOSviewer (a bibliometric software program). An increase in the number of publications was identified from 1997 to 2021. The United States (U.S.) published the most papers (84) and received the highest citations (3778), followed by India and Brazil. The Journal of Periodontology published the highest number of articles (39) that received the highest citations. The University of Kentucky from the U.S. published most of the papers related to salivary biomarkers that received the highest citations. Timo Sorsa published the most papers (14 papers), while Craig Miller was the highest cited author (754 citations). Concerning the highly cited papers, a paper by Micheal et al., published in 2010, received the highest citations (487 citations). "Saliva", followed by "human", were the most common keywords used by the authors in the papers related to salivary biomarkers. The findings of this analysis revealed an increase in salivary biomarker-related publications that positively influenced the number of citations each paper received. The U.S. produced the most publications that received the highest citations, and the University of Kentucky, U.S., was the most prominent. The articles were mostly published in the Journal of Periodontology and received the highest number of citations. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
24. Papers of Year 2006.
- Author
-
Johnson, Barry L. and Calabrese, Edward J.
- Subjects
AWARDS ,TOXICITY testing ,CONTAMINATED sediments ,GUIDELINES ,BIOINDICATORS - Abstract
The article announces awards for Papers of the Year for 2006 in this Journal. Included are James Meador, for "Rationale and procedures for using the tissue-residue approach for toxicity assessment and determination of tissue, water, and sediment quality guidelines for aquatic organisms." HERA 12:1018-73 and also DW Pennington, M Margni, J Payet, and O Jolliet for "Risk and regulatory hazard based toxicological effect Indicators in life cycle assessment (LCA). HERA 12:450-75
- Published
- 2007
- Full Text
- View/download PDF
25. Chemical and biological indicators of soil quality in organic and conventional Japanese plum orchards.
- Author
-
Herencia, J.F., Pérez-Romero, L.F., Daza, A., and Arroyo, F.T.
- Subjects
SOIL quality ,BIOINDICATORS ,INDICATORS & test-papers ,ORCHARDS ,ORGANIC farming - Abstract
To evaluate the effect of the management system on soil quality, chemical and biological properties were measured in soils (0–20 cm depth) from Japanese plum orchards managed under organic and conventional conditions. The experiment was conducted between 2005 and 2014 in orchards established at the agricultural research station at Alcalá del Río, Seville, Spain. Overall, the soil chemical parameters in the organic orchard showed higher concentrations of soil organic matter, total N, available P and Mg. There was a trend of higher concentrations of K and Na, though for these elements the differences were significant only in two and one years, respectively. Similarly, concentrations of Mn and Zn tended to be higher in the organic plots, whereas contradictory trends were shown for Fe and Cu. No differences were found between the treatments for other physicochemical parameters such as pH and electrical conductivity. Regarding soil biological properties, the organic system was characterised with a significantly greater abundance of bacteria and fungi compared with the conventional system. The rhizobia population and the legume biomass were also higher in the organic orchard and the plants had more nodules. Likewise, the number of earthworms was higher in the organic system. The results showed that long-term organic management, including the use of cover crops and compost, resulted in a significant shift of the chemical and biological characteristics of the soil compared with the conventional management practice, thus improving soil quality and suggesting that organic farming may provide a potential solution to achieve sustainable agricultural systems. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
26. APPLICATION OF BENTHIC MACROINVERTEBRATES AS POTENTIAL BIO-INDICATORS IN MALAYSIAN'S RIVERS: GAP AND BIBLIOMETRIC ANALYSES.
- Author
-
Hettige, Nadeesha Dilani, Hashim, Rohasliney, and Kutty, Ahmad Abas
- Subjects
BIBLIOMETRICS ,INVERTEBRATES ,TOXICITY testing ,BIOINDICATORS ,NUCLEOTIDE sequencing - Abstract
The literature on reliable indices, suitable bio-indicators, taxonomic level, frequency of measurements, and replications on benthic macroinvertebrates remains scarce in Malaysia. In addition, no review study was conducted using bibliometric analysis related to this discipline. Thus, this review aimed at gap and bibliometric analysis of publications on benthic macroinvertebrates as potential biological indicators. Sixty-six relevant scientific research papers from 2011 to 2022 were selected from the different databases. Then, descriptive and inferential statistical analyses were performed to assess the most reliable potential bio-indicators for river assessment and monitoring. Visualized statistics regarding bibliographic coupling analysis of authors, journal proceedings, and organizations were analyzed. The findings revealed that publications on invertebrates had no significant relationship in the last ten years (r = 0.241; p > 0.05). Most publications on macroinvertebrates in Malaysian rivers were found in the Scopus database (53.57%). Therefore, research articles must be published in journals included in the Journal Citation Report (JCR) to improve their quality further. Besides, benthic macroinvertebrates are commonly identified only up to the family level (47%) due to incomplete tropical benthic macroinvertebrates identification keys. As such, using environmental DNA methods with the power of next-generation sequencing has come in handy in bio-indicator species identification. Among the potential bio-indicators found in Malaysian rivers are Chironomidae (9.11%), Baetidae (8.87%), and Hydropsychidae (8.62%). Based on the approaches utilized in analyzing benthic macroinvertebrates as bio-indicators, in-depth research such as bioassay and toxicology tests is necessary to realize the potential bio-indicators fully. Many studies focused on recreational rivers in Peninsular Malaysia. Therefore, research studies would be expanded to urban rivers and rivers in Sabah and Sarawak. Also, to overcome the limitation of the single biotic index, developing a multimetric index to evaluate the water quality by selecting many river basins is essential. Bibliographic analysis showed that the Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, made the greatest total link strength. The Serangga Journal published the highest number of research articles. Finally, utilizing advanced technologies is recommended to address Malaysia's lack of potential bio-indicator studies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. CHEMICAL AND BIOLOGICAL INDICATORS FOR EVALUATION OF ARCTIC SOIL DEGRADATION AND ITS POTENTIAL TO REMEDIATION.
- Author
-
SMIRNOVA, Tatiana S., MAZLOVA, Elena A., KULIKOVA, Olga A., OSTROVKIN, Ilya M., GONOPOLSKY, Adam M., and CHELOZNOVA, Kristina V.
- Subjects
BIOINDICATORS ,SOIL degradation ,ENVIRONMENTAL degradation ,INDICATORS & test-papers ,POLLUTION ,TUNDRAS - Abstract
In recent years, significant efforts have been made to accelerate the economic development of the Arctic zone, leading to intense environmental pollution of this region, accompanied by the significant impact of accumulated environmental damage in the region. The solution to these problems is difficult due to the remoteness of these areas and severe climatic conditions. Therefore, it is important to evaluate the potential for restoration of arctic soils. For this purpose, various indicators are used, including biological ones. In the analyzed arctic soil samples, high concentrations of petroleum hydrocarbons (up to 47,000 mg/kg) and chloride-ions (0.10-0.14 wt %) were established. Microbioassay demonstrated a presence of hydrocarbon-oxidizing microorganisms: Penicillium, Azotobacter chroococcum, Bacillus subtilis, Pseudomonas oleovorans. A low enzymatic activity and specific Arctic climate point out a low self-restoration ability of the soil, demonstrated the need for its remediation. The microbioassay with microbial strains identification and soil remediation methods suitable for the Arctic zone were recommended. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
28. Short Paper Acanthochondria priacanthi (Copepoda: Chondracanthidae) as a biological indicator for stock identification of sandfish Arctoscopus japonicus (Steindachner).
- Author
-
Yanagimoto, Takashi and Konishi, Kenji
- Subjects
- *
STEINDACHNERINA , *BIOINDICATORS , *BIOLOGICAL monitoring , *FISH parasites , *COPEPODA , *CRUSTACEA - Abstract
Investigates the biological indicator for stock identification of sandfish Arctoscopus japonicus in Japan. Role of the copepod Steindachner Acanthochondria priacanthi; Parasitic relationship between the sand fish and the crustacean; Percentage of infected hosts in a sample.
- Published
- 2004
- Full Text
- View/download PDF
29. Evaluation of oriental tobacco of the variety group of Basmi upon organic production.
- Author
-
Bozukov, Hristo, Kasheva, Maria, Kochev, Yovcho, and Vitanova, Daniela
- Subjects
TOBACCO ,TOBACCO products ,BIOINDICATORS ,INDICATORS & test-papers ,NICOTINE ,RAW materials - Abstract
Bio agriculture as a whole, including tobacco cultivation, is more environmentally friendly. There is no doubt that the activity of organic tobacco production creates demand, which stimulates people to do better business and to cause less harm to the environment. Some tobacco products, however, which are advertised as natural, often are even more hazardous to the health of smokers due to the fact that a part of the tobacco elements - such as tar or nicotine - are actually contained in these products in a higher percentage than regular cigarettes. The objective of our study is to make a comparative evaluation of the quality and chemical indicators of the biological tobacco raw material of the cultivated 4 varieties of Oriental tobacco of the variety group of Basmi with those of their variety characteristics upon conventional cultivation. [ABSTRACT FROM AUTHOR]
- Published
- 2019
30. Implementation of Decision Support System for Ecological Environment Planning of Urban Green Space.
- Author
-
Feng, Sijing
- Subjects
DECISION support systems ,PARTICLE swarm optimization ,ECOSYSTEMS ,PUBLIC spaces ,URBAN planning ,BIOINDICATORS - Abstract
As a highly concentrated residential area, urban development and population concentration have caused serious environmental pollution problems that threaten the safety of the water and atmospheric resources that humans rely on for survival. To address this issue, the importance of urban green space (UGS) has become increasingly prominent. This paper collected data related to UGS (green space coverage, vegetation type, environmental quality, population distribution, etc.) for processing, used the entropy algorithm to build an ecological environment assessment model, and then used the particle swarm optimisation algorithm to optimise the model accordingly. Finally, a decision support system was proposed for UGS ecological environment planning, which comprehensively considered future environmental changes. Through comparison before and after the application of decision support system, this paper tested and verified several indicators such as green space coverage, biological diversity index, and climate adaptability. Among them, after the application of the decision support system, the green space coverage rate has increased year by year, and many indicators in the biological diversity index have improved significantly. The average climate adaptability of traditional UGS planning was 70 %, while the average climate adaptability of decision support system green space planning was 90 %, which has been significantly improved. The outcome shows that the system has a notable effect in improving the climate adaptation and ecological quality of the city. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
31. Fitotoxicidade do chumbo na germinação e crescimento inicial de alface em função da anatomia radicular e ciclo cellular.
- Author
-
Pereira, Marcio Paulo, Pereira, Fabricio José, Almeida Rodrigues, Luiz Carlos de, Barbosa, Sandro, and De Castro, Evaristo Mauro
- Subjects
LEAD ,PHYTOTOXICITY ,GERMINATION ,LETTUCE ,CELL cycle ,FILTER paper ,APICAL meristems - Abstract
Copyright of Revista Agro@mbiente On-line is the property of Revista Agro@mbiente On-line and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
- Full Text
- View/download PDF
32. Autoimmune thyroiditis as an indicator of autoimmune sequelae during cancer immunotherapy
- Author
-
Kong, Yi-chi M., Jacob, Jennifer B., Flynn, Jeffrey C., Elliott, Bruce E., and Wei, Wei-Zen
- Subjects
- *
AUTOIMMUNE thyroiditis , *INDICATORS & test-papers , *BIOINDICATORS , *HEALTH status indicators , *CANCER immunotherapy , *DISEASE complications , *T cells , *CELLULAR control mechanisms - Abstract
Abstract: Improving cancer immunotherapy by targeting T cell network also triggers autoimmunity. We disrupted regulatory T cell (Treg) function to probe the balance between breast cancer vaccination and autoimmune thyroiditis (EAT) in four models, with particular attention to MHC-associated susceptibility, EAT induction with mouse thyroglobulin (mTg) without adjuvant, and tolerance to Her-2/neu in transgenic mice. 1) In EAT-resistant BALB/c mice, Treg depletion enhanced tumor regression, and facilitated mild thyroiditis induction. 2) In Her-2 tolerant C57BL/6 mice expressing HLA-DR3, an EAT-susceptibility allele, Her-2 DNA vaccinations must follow Treg depletion for (Her-2xDR3)F1 mice to resist tumor challenge; thyroiditis incidence was moderated by the EAT-resistant IAb allele. 3) In neu tolerant, EAT-resistant BALB/c mice, implanted neu+ tumor also regressed only after Treg depletion and DNA vaccinations. Tumor immunity was long-term, providing protection from spontaneous tumorigenesis. In all three, immune stimuli from concurrent tumor regression and EAT development have a noticeable, mutually augmenting effect. 4) In Treg-depleted, EAT-susceptible CBA/J mice, strong tumor protection was established by immunization with a cell vaccine. mTg injections led to greater thyroiditis incidence and severity. Combination models with MHC class II diversity should facilitate autoimmunity risk assessment and management while generating tumor immunity. [Copyright &y& Elsevier]
- Published
- 2009
- Full Text
- View/download PDF
33. Conserving ecosystem integrity: Ecological theory as a guide for marine protected area monitoring.
- Author
-
Dunham, Anya, Iacarella, Josephine C., Hunter, Karen L., Davies, Sarah C., Dudas, Sarah, Gale, Katie S. P., Rubidge, Emily, and Archer, Stephanie K.
- Subjects
ECOLOGICAL integrity ,BIOINDICATORS ,MARINE parks & reserves ,BIOMASS ,SCIENTIFIC community - Abstract
Global policies increasingly focus on the importance of maintaining or improving the integrity of ecosystems, but defining, assessing, and monitoring integrity in marine protected areas (MPAs) remains a challenge. In this paper, we conceptualized ecological integrity along dimensions of heterogeneity and stability containing seven components: physical structure, diversity, function, persistence, resistance, resilience, and natural variability. Through a structured literature search, we identified indicators and metrics used for quantifying ecosystem status components in the marine environment, then reviewed MPA management plans worldwide for inclusion of these components. We evaluated 202 papers applying 83 ecological indicators built from 72 metrics. Ecosystem components were most comprehensively addressed by metrics of taxa presence, organisms count, and area occupied by benthic organisms, and community structure, biomass, and percent cover indicators. Of the 557 MPA management plans we reviewed globally, 93% used at least one ecosystem status term or its synonym in an ecologically relevant context, but 39% did not address any components of stability. In particular, resistance was mentioned in only 1% of management plans, but in some cases it may be inferred from indicators and metrics used to track the best addressed component in management plans, diversity. Plans for MPAs with both an ecological/biological purpose and a research and education purpose contained ecosystem status terms more frequently than other plans, suggesting that engagement with the scientific community may have improved the application of these terms. An improved understanding of how to operationalize and measure ecological integrity can help MPA monitoring and management. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Overcoming Barriers and Fostering Adoption: Evaluating the Institutional Mainstreaming of Nature-Based Solutions in the Emilia-Romagna Region's Socio-Ecological System.
- Author
-
Carlone, Teresa and Mannocchi, Matteo
- Subjects
CLIMATE change adaptation ,BEACH erosion ,CLIMATE change mitigation ,ECOSYSTEMS ,BIOINDICATORS ,STORM surges - Abstract
International organizations like the EU and IUCN are advocating for nature-based solutions (NBSs) as green alternatives for climate change adaptation and mitigation, especially in disaster risk reduction and urban planning. The H2020 OPERANDUM project was designed to address the major hydro-meteorological risks (floods, droughts, landslides, storm surge, and coastal erosions) through the deployment and assessment of NBSs in different contexts and areas affected by specific hazards. Despite growing research and funding, NBSs are still in the early stages of mainstream adoption and face challenges in acceptance and dissemination. Although designed to benefit both social and ecological systems, they remain a niche area with low perceived effectiveness among technicians and decision-makers. Their uptake requires a paradigm shift that includes a change in cultural-cognitive institutions, a different and wider set of knowledge than traditional engineering (ecological, social), and an adaptive management approach, missing within the current governance system. Using a qualitative case study research method, this paper aims to identify barriers in mainstreaming NBSs for DRR (disaster risk reduction) in the Emilia-Romagna region—influenced not only by individual beliefs but also by variables tied to technical culture and local procedural norms—and emphasizing the importance of combining social and ecological indicators in socio-ecological system analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. ANALYSIS OF ECOLOGICAL STATUS OF SURFACE WATERS IN THE BYSTRZYCA RIVER IN LUBLIN.
- Author
-
Grzywna, Antoni, Jóźwiakowski, Krzysztof, Gizińska-Górna, Magdalena, Marzec, Michał, Mazur, Andrzej, and Obroślak, Radomir
- Subjects
WATER quality ,WATER ,BIOINDICATORS ,RIVERS ,INDICATORS & test-papers ,RIVER channels ,PHOSPHATE removal (Water purification) - Abstract
The quality of surface water in watercourses in the region of Lublin agglomeration was studied in 2012-2014. Biological and chemical indicators of the study for various sampling sites were detected and the resulting values of the indicators were processed statistically. Rivers characterized by small size and the flow and modification of the riverbed. The resulting low values of macrophyte river index and infusorial index pointed to a poor quality of surface waters. Chemical indicators of the quality of surface waters reached low values, only BOD and phosphates reached high values. The river is located outside the city and it is characterized by moderate potential ecological (III quality class), and the river within Lublin is insufficiently potential ecological (IV quality class). Statistical analysis showed high variability index values between the studied positions. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
36. The role of spatial data and geomatic approaches in treeline mapping: a review of methods and limitations.
- Author
-
Fissore, Vanina, Motta, Renzo, Palik, Brian, and Mondino, Enrico Borgogno
- Subjects
GLOBAL warming ,BIOINDICATORS ,SPATIAL data infrastructures - Abstract
In the debate over global warming, treeline position is considered an important ecological indicator of climate change. Currently, analysis of upward treeline shift is often based on various spatial data processed by geomatic techniques. In this work, considering a selection of 31 reference papers, we assessed how the scientific community is using different methods to map treeline position and/or shifts using spatial datasets. We found that a significant number of published studies suffer from a low degree of awareness of processed data, which outcomes in potentially unreliable results that may compromise the validity of inference from the studies. Moreover, we propose an operational approach for easily incorporating consideration of spatial data quality, so as to improve reliability of results and better support ecological conclusions. Finally, we present a simulation of potential treeline vertical error for the Alpine region of Northern Italy, as driven by primary data quality. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
37. EXERGY, ECOLOGY, AND DEMOCRACY-CONCEPTS OF A VITAL SOCIETY OR A PROPOSAL FOR AN EXERGY TAX 30 YEARS AFTER, Part 2 -- Exergy and UN Sustainable Development Goals.
- Author
-
TRANCOSSI, Michele, PASCOA, Jose, and CATELLANI, Tiziano
- Subjects
ENVIRONMENTAL indicators ,EXERGY ,SUSTAINABLE development ,BIOINDICATORS ,MANUFACTURING processes ,CONSUMPTION (Economics) - Abstract
Thirty years ago, Wall published "Exergy Ecology Democracy - Concepts of a vital society or a proposal for an exergy tax". This paper discusses this milestone contribution by Wall. It has traced a path toward economic, environmental and societal sustainability and proposed exergy as a robust indicator for measuring progress. This paper is divided into two parts. The first focuses on better understanding Wall's role in today's scenario. This second part presents different methods that allow using exergy to assess the sustainability of economic, industrial and societal processes. First, it presents an example showing the inadequacy of domestic material consumption (DMC) in evaluating the sustainability of import-export operations. Second, how exergy can apply to increase the significance of DMC has been discussed. A new indicator that allows coupling with DMC has been defined to improve the information delivered by DMC and make it a more effective sustainability indicator. Third, some ecological indicators are discussed. The use of exergy to integrate DMC and assess lifecycle and polluting emissions into the environment has been discussed. Finally, an effective exergy tax proposal is presented as an instrument for stimulating an effective transitionward sustainability of consumption and people's habits. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Lichen diversity for environmental stress study: Application of index of atmospheric purity (IAP) and mapping around a paper mill in Barak Valley, Assam, northeast India.
- Author
-
DAS, PULAK, JOSHI, SANTOSH, ROUT, JAYASHREE, and UPRETI, D. K.
- Subjects
EPIPHYTIC lichens ,BIOLOGICAL monitoring ,BIOINDICATORS ,AIR pollutants ,PLANT species - Abstract
Copyright of Tropical Ecology is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
39. Impact of change in climate and policy from 1988 to 2007 on environmental and microbial variables at the time series station Boknis Eck, Baltic Sea.
- Author
-
Hoppe, H.-G., Giesenhagen, H. C., Koppe, R., Hansen, H.-P., and Gocke, K.
- Subjects
CLIMATE change ,ENVIRONMENTAL policy ,PHYTOPLANKTON ,BIOINDICATORS ,CHLOROPHYLL ,HYDROGEN-ion concentration ,SEDIMENTS ,TIME series analysis - Abstract
Phytoplankton and bacteria are sensitive indicators of environmental change. The temporal development of these key organisms was monitored from 1988 to the end of 2007 at the time series station Boknis Eck in the Western Baltic Sea. This period was characterized by the adaption of the Baltic Sea ecosystem to changes in the environmental conditions caused by the collapse and conversion of the political system in the Southern and Eastern Border States, accompanied by the general effects of global climate change. Measured variables were chlorophyll, primary production, bacteria number, -biomass and -production, glucose turnover rate, macro-nutrients, pH, temperature and salinity. Negative trends with time were recorded for chlorophyll, the bacterial variables, nitrate, ammonia, phosphate, silicate, oxygen and salinity while temperature, pH, and the ratio between bacteria numbers and chlorophyll increased. The strongest reductions with time occurred for the annual maximum values, e.g. for chlorophyll during the spring bloom or for nitrate during winter, while the annual minimum values remained more stable. In deep water above sediment the negative trends of oxygen, nitrate, phosphate and bacterial variables as well as the positive trend of temperature were similar to those in the surface while the trends of salinity, ammonia and silicate were opposite to those in the surface. Decreasing oxygen even in the surface layer was of particular interest because it suggested enhanced recycling of nutrients from the deep hypoxic zones to the surface by vertical mixing. In the long run all variables correlated positively with temperature, except chlorophyll and salinity. Salinity correlated negatively with all bacterial variables as well as precipitation and positively with chlorophyll. Surprisingly, bacterial variables did not correlate with chlorophyll which may be inherent with the time lag between the peaks of phytoplankton and bacteria during spring. Compared to the 20-yr averages of the environmental and microbial variables, the strongest negative deviations of corresponding annual averages were measured about ten years after political change for nitrate and bacterial secondary production (~ -60%), followed by chlorophyll (-50%) and bacterial biomass (-40%). Considering the circulation of surface currents in the Baltic Sea we conclude that the improved management of water resources after 1989 together with the trends of the climate variables salinity and temperature were responsible for the observed patterns of the microbial variables at the Boknis Eck time series station. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
40. Research on CLUFS and Its Application in Rapid Prediction of the Impact of Regulating Services Value in Construction Projects.
- Author
-
Guo, Chenyang, Han, Baolong, Shu, Chengji, Ding, Shiyu, and Wang, Haoqi
- Subjects
CONSTRUCTION projects ,LANDSCAPE protection ,PRESERVATION of architecture ,ENVIRONMENTAL impact analysis ,URBANIZATION ,BIOINDICATORS ,ECOLOGICAL impact ,CLASSROOM activities - Abstract
With the development of human society and the acceleration of urbanization, the impact of construction projects on the ecological environment is increasingly attracting attention. Conducting an ecological environmental impact assessment of construction projects is crucial to protect the ecological environment and achieve sustainable development. To estimate how construction projects would affect the value of ecosystem services, this paper develops the China Land Use Feature Data Sets (CLUFS) and uses the Beijing "One Line Four Mines" project as an example. Research found that the project's conservation and restoration zone and the landscape construction zone will significantly enhance the ecosystem regulation services value. The conservation and restoration zone will increase by 30% from the current 1.413 billion yuan per year to 1.836 billion yuan per year, and the landscape construction zone will increase by 69% from the current 400 million yuan per year to 676 million yuan per year. The tourism development zone, dominated by urban construction, will result in a decrease in ecosystem regulation services, from 19.26 million yuan per year to 17.60 million yuan per year by 9%. Overall, the "One Line Four Mines" project achieved a balance of ecological value and surplus. The method proposed in this paper for predicting the impact of ecosystem regulation services value on construction projects can be used to quickly evaluate the effects of different planning schemes on the ecosystem services value of land parcels to help urban planning decision-makers control the condition of land use. It can provide new indicators for the ecological environment department to incorporate ecological benefits into the evaluation system of planning schemes and new methods for evaluating the ecological protection effectiveness of projects. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. Lobaria pulmonaria (L.) Hoffm.: The Multifaceted Suitability of the Lung Lichen to Monitor Forest Ecosystems.
- Author
-
Ravera, Sonia, Benesperi, Renato, Bianchi, Elisabetta, Brunialti, Giorgio, Di Nuzzo, Luca, Frati, Luisa, Giordani, Paolo, Isocrono, Deborah, Nascimbene, Juri, Vallese, Chiara, and Paoli, Luca
- Subjects
FOREST monitoring ,BIOINDICATORS ,POLLUTION management ,LICHENS ,FOREST management - Abstract
Lobaria pulmonaria (L.) Hoffm. is a tripartite, broad-lobed foliose lichen usually found on bark and on epiphytic and epilithic mosses in humid forests. Currently, the species is threatened in most European countries because of its sensitivity to environmental alterations. In this paper, a total of 107 previous studies across more than 50 years were analysed to gain insight into the multiple roles that L. pulmonaria plays in forest habitats, specifically relating to ecosystem services and as environmental bioindicator. Content analysis was employed to systematically characterise and classify the existing papers on the functions performed by L. pulmonaria into several groups mostly based on research topic and scope. Two main types of ecosystem services (N
2 fixation and feeding) offered by L. pulmonaria have been identified, with varying research aims and types of parameters measured in the studies. Two aspects of current biomonitoring applications using L. pulmonaria in forest habitats (concerning atmospheric pollution and forest management) were analysed, and it was found that the number of related studies increased significantly in recent years. Finally, the current practices of monitoring using L. pulmonaria as a biological indicator are discussed, and recommendations are provided. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
42. Bioindicators: A Review of Their Use in the Environmental Literature 1970–2005.
- Author
-
Burger, Joanna
- Subjects
ENVIRONMENTAL sciences ,BIOINDICATORS ,ENVIRONMENTAL health ,LONGEVITY ,POLLUTANTS ,BIOTIC communities ,ENVIRONMENTAL quality - Abstract
A wide range of scientists, managers, governmental agencies, and the public are interested in assessing the health and well-being of species, populations, and ecosystems. This has resulted in increased studies of the usefulness of different indicators as a measure of stressors and contaminants. This paper presents a review of bioindicators since 1970 by using four journals: Science of the Total Environment, Environmental Science and Technology, Environmental Pollution, and Ecotoxicology and Environmental Safety. The overall objective was to examine temporal trends in publications on bioindicators, the species used as bioindicators, the contaminants of concern, and what they indicated (e.g., pollution or air quality). Overall, there has been a steady rise in the publication of papers about indicators since 1970, with nearly 35% of the indicator papers published in the last 5 years. Most papers that use the term indicator or bioindicator deal with some form of pollution, environmental quality, or human health. The greatest percent of indicator papers dealt with metal pollution and other chemical pollution, and the least dealt with oil. Despite the recent attention the developed countries have given to radioactive radiation and nuclear waste storage, only 5% of the papers were describing bioindicators of radiation. Plants accounted for over 40% of the indicator papers, followed by invertebrates and then fish. Of the total indicator papers, less than 2% each were attributable to sediments, reptiles, amphibians, and ecosystems. These data indicate that indicators have not been developed equally for different contaminants or with the use of different species. Mammals and birds, which often represent top-trophic levels, are clearly underrepresented. Although the choice of journals examined clearly affected the results, these data indicate a disproportionate emphasis on plants, overall pollution, and metals. To design an adequate biomonitoring plan, managers and public policy makers require more information on a suite of species from the same location. Only with such information can the best accumulators for particular contaminants be selected. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
43. Assessing the spatial pattern of a river water quality in southern Brazil by multivariate analysis of biological and chemical indicators.
- Author
-
Cassanego, M. B. B. and Droste, A.
- Subjects
WATER quality ,BIOINDICATORS ,INDICATORS & test-papers ,GENETIC toxicology ,RIVERS ,MULTIVARIATE analysis - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
44. Global Overview of Modern Research Based on Ellenberg Indicator Values.
- Author
-
Zolotova, Ekaterina, Ivanova, Natalya, and Ivanova, Svetlana
- Subjects
BIOINDICATORS ,VEGETATION dynamics ,ECOLOGICAL niche ,CULTIVARS ,LITERATURE reviews ,PLANT communities ,HABITATS - Abstract
The ecological indicator values are the most common and sufficiently effective method of habitat assessment. The aim of our research review is to analyze current studies from 2020 to 2022 in which researchers have used Ellenberg indicator values to address a variety of problems. We limited the study to papers that are published in journals indexed by Scopus and Web of Science. The total number of records examined was 358. The number of records selected was 98. Visualization of the distribution of studies by country is based on the GeoCharts library. The results revealed that about half of the studies were conducted in Germany and Poland, and the most common objects were forests and grasslands. Almost half of the studies were devoted to ecological niches, habitat analysis, assessment of vegetation dynamics, and influence of various factors on plants. The analyzed articles are actively cited. In general, our research analysis revealed the effectiveness of Ellenberg indicator values for solving a wide range of urgent problems for a variety of plant communities, and different climate zones. The results of our research confirmed the advisability of actively using this approach. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
45. Evaluation of acute toxicity of vinasse by means of Daphnia magna and Aliivibrio fischeri: a comparative study
- Author
-
Carel Elizabeth Carvajal Arias, Juan Sebastián Meneses-Sánchez, and Möritz Velásquez-Riaño
- Subjects
Health, Toxicology and Mutagenesis ,Daphnia magna ,0211 other engineering and technologies ,Vinasse ,luminescent bacteria ,02 engineering and technology ,010501 environmental sciences ,Toxicology ,01 natural sciences ,Human health ,RA1190-1270 ,Aliivibrio fischeri ,Effluent ,0105 earth and related environmental sciences ,EC50 ,Pharmacology ,021110 strategic, defence & security studies ,biology ,Luminescent bacteria ,fungi ,biology.organism_classification ,Pulp and paper industry ,Acute toxicity ,bioindicators ,Toxicology. Poisons ,Original Article ,water fleas ,wastewater distillery - Abstract
In the bioethanol industry, per liter of the produced alcohol 9 to 14 liters of vinasse are obtained as a byproduct. If the vinasse is directly shed into bodies of water without an adequate treatment, it may have negative effects on the existing biota and human health due to its high turbidity and color, low pH and high content of organic material. The purpose of this study was to assess the acute toxicity of vinasse by means of a rapid test with Aliivibrio fischeri and compare it with a standard immobilization assay with Daphnia magna. The standard assay of D. magna by means of its EC50 of 4.7% showed that organism was more sensitive to the contaminant, in comparison with the 69.6% obtained with the A. fischeri which suggests that it should be continuesly used as one of the organisms of first choice for the evaluation of the acute toxicity of this effluent.
- Published
- 2019
46. Measuring the impact of methodological research: a framework and methods to identify evidence of impact.
- Author
-
Brueton, Valerie C., Vale, Claire L., Choodari-Oskooei, Babak, Jinks, Rachel, and Tierney, Jayne F.
- Subjects
MEDICAL research ,PUBLICATIONS ,CITATION analysis ,CLINICAL trials ,HEALTH status indicators ,BIOINDICATORS ,INDICATORS & test-papers - Abstract
Background Providing evidence of impact highlights the benefits of medical research to society. Such evidence is increasingly requested by research funders and commonly relies on citation analysis. However, other indicators may be more informative. Although frameworks to demonstrate the impact of clinical research have been reported, no complementary framework exists for methodological research. Therefore, we assessed the impact of methodological research projects conducted or completed between 2009 and 2012 at the UK Medical Research Council Clinical Trials Unit Hub for Trials Methodology ResearchHub, with a view to developing an appropriate framework. Methods Various approaches to the collection of data on research impact were employed. Citation rates were obtained using Web of Science (http://www.webofknowledge.com/) and analyzed descriptively. Semistructured interviews were conducted to obtain information on the rates of different types of research output that indicated impact for each project. Results were then pooled across all projects. Finally, email queries pertaining to methodology projects were collected retrospectively and their content analyzed. Results Simple citation analysis established the citation rates per year since publication for 74 methodological publications; however, further detailed analysis revealed more about the potential influence of these citations. Interviews that spanned 20 individual research projects demonstrated a variety of types of impact not otherwise collated, for example, applications and further developments of the research; release of software and provision of guidance materials to facilitate uptake; formation of new collaborations and broad dissemination. Finally, 194 email queries relating to 6 methodological projects were received from 170 individuals across 23 countries. They provided further evidence that the methodologies were impacting on research and research practice, both nationally and internationally. We have used the information gathered in this study to adapt an existing framework for impact of clinical research for use in methodological research. Conclusions Gathering evidence on research impact of methodological research from a variety of sources has enabled us to obtain multiple indicators and thus to demonstrate broad impacts of methodological research. The adapted framework developed can be applied to future methodological research and thus provides a tool for methodologists to better assess and report research impacts. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
47. FORMING THE CONCEPTUAL FOUNDATIONS OF A SUSTAINABLE DEVELOPMENT ACCOUNTING SYSTEM AND REFLECTING ITS RESULTS IN REPORTING.
- Author
-
Khalaf Alsarayrah, Tasneem Mohammad, Haroun Alhasanat, Khaled Ahmad, Sokil, Oleh, Zhuk, Valeriy, and Sokil, Yana
- Subjects
BIOINDICATORS ,ECONOMIC indicators ,ENVIRONMENTAL indicators ,INVESTMENT analysis ,SUSTAINABLE development - Abstract
The subject of this study is sustainable development accounting, particularly its role in shaping environmental and social indicators of enterprises. The paper pays special attention to the issue of insufficient integration of environmental and social aspects into conventional financial accounting. It identifies the need to devise methodologies that include social and ecological indicators in financial reporting, to provide a more comprehensive understanding of the impact of enterprise activities on society and the environment. The results demonstrate that the implementation of sustainable development accounting allows for a comprehensive assessment of the financial, social, and environmental impact of the enterprise. Analysis of sources proves that enterprises that use this approach have better opportunities for risk forecasting and resource management, which increases their competitiveness and responsibility to society. The interpretation of the results emphasizes that the success of sustainable development accounting is conditioned by the ability to integrate comprehensive data about the impact of enterprise activities on the environment and society into the general management system. Such integration allows enterprises not only to meet regulatory requirements but also to enhance their overall value and image. The features and distinctive characteristics of the results are that they enable companies to conduct more transparent and responsible business. The implementation of sustainable development accounting systems gives enterprises the ability not only to reduce the negative impact on the environment but also to effectively engage resources to address social issues. The domain of practical application of the results extends to corporate governance, socially responsible business, investment analysis, and environmental assessment. It includes internal and external regulation, stakeholder requirements, and strategic planning at enterprises [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. Remote Sensing Application in Ecological Restoration Monitoring: A Systematic Review.
- Author
-
Wang, Ruozeng, Sun, Yonghua, Zong, Jinkun, Wang, Yihan, Cao, Xuyue, Wang, Yanzhao, Cheng, Xinglu, and Zhang, Wangkuan
- Subjects
ECOLOGICAL restoration monitoring ,REMOTE sensing ,RESTORATION ecology ,BIOINDICATORS - Abstract
In the context of the continuous degradation of the global environment, ecological restoration has become a primary task in global environmental governance. In this process, remote sensing technology, as an advanced monitoring and analysis tool, plays a key role in monitoring ecological restoration. This article reviews the application of remote sensing technology in ecological restoration monitoring. Based on a comprehensive analysis of the literature in the field of ecological remote sensing, it systematically summarizes the major in-orbit spaceborne and airborne sensors and their related products. This article further proposes a series of evaluation indicators for ecological restoration from four aspects: forests, soil, water, and the atmosphere, and elaborates on the calculation methods for these indicators. In addition, this paper also summarizes the methods for evaluating the effectiveness of ecological restoration, including subjective evaluation, objective evaluation, and comprehensive evaluation methods. Finally, we analyze the challenges faced by remote sensing technology in evaluating ecological restoration effectiveness, such as issues with the precision of indicators extraction, the limitations of spatial resolution, and the diversity of evaluation methods. This review also looks forward to future ecological restoration technologies, such as the potential applications of integrated aerospace and terrestrial remote sensing, multi-data fusion, and machine learning technologies. This study reveals the effectiveness of remote sensing technology in ecological restoration monitoring, aiming to provide efficient tools and innovative strategies for future remote sensing monitoring and assessment of ecological restoration. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Ensemble Deep Learning-Based Image Classification for Breast Cancer Subtype and Invasiveness Diagnosis from Whole Slide Image Histopathology.
- Author
-
Balasubramanian, Aadhi Aadhavan, Al-Heejawi, Salah Mohammed Awad, Singh, Akarsh, Breggia, Anne, Ahmad, Bilal, Christman, Robert, Ryan, Stephen T., and Amal, Saeed
- Subjects
BREAST tumor diagnosis ,CANCER invasiveness ,TASK performance ,MEDICAL technology ,BIOINDICATORS ,BREAST tumors ,ARTIFICIAL intelligence ,MEDICAL care ,HOSPITALS ,CAUSES of death ,EVALUATION of medical care ,DESCRIPTIVE statistics ,DEEP learning ,COMPUTER-aided diagnosis ,ARTIFICIAL neural networks ,DIGITAL image processing ,ALGORITHMS ,CARCINOMA in situ - Abstract
Simple Summary: Breast cancer is a significant cause of female cancer-related deaths in the US. Checking how severe the cancer is helps in planning treatment. Modern AI methods are good at grading cancer, but they are not used much in hospitals yet. We developed and utilized ensemble deep learning algorithms for addressing the tasks of classifying (1) breast cancer subtype and (2) breast cancer invasiveness from whole slide image (WSI) histopathology slides. The ensemble models used were based on convolutional neural networks (CNNs) known for extracting distinctive features crucial for accurate classification. In this paper, we provide a comprehensive analysis of these models and the used methodology for breast cancer diagnosis tasks. Cancer diagnosis and classification are pivotal for effective patient management and treatment planning. In this study, a comprehensive approach is presented utilizing ensemble deep learning techniques to analyze breast cancer histopathology images. Our datasets were based on two widely employed datasets from different centers for two different tasks: BACH and BreakHis. Within the BACH dataset, a proposed ensemble strategy was employed, incorporating VGG16 and ResNet50 architectures to achieve precise classification of breast cancer histopathology images. Introducing a novel image patching technique to preprocess a high-resolution image facilitated a focused analysis of localized regions of interest. The annotated BACH dataset encompassed 400 WSIs across four distinct classes: Normal, Benign, In Situ Carcinoma, and Invasive Carcinoma. In addition, the proposed ensemble was used on the BreakHis dataset, utilizing VGG16, ResNet34, and ResNet50 models to classify microscopic images into eight distinct categories (four benign and four malignant). For both datasets, a five-fold cross-validation approach was employed for rigorous training and testing. Preliminary experimental results indicated a patch classification accuracy of 95.31% (for the BACH dataset) and WSI image classification accuracy of 98.43% (BreakHis). This research significantly contributes to ongoing endeavors in harnessing artificial intelligence to advance breast cancer diagnosis, potentially fostering improved patient outcomes and alleviating healthcare burdens. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Enhancing ecological uncertainty predictions in pollution control games through dynamic Bayesian updating.
- Author
-
Zhou, Jiangjing, Petrosian, Ovanes, and Gao, Hongwei
- Subjects
NATURAL disasters ,BIOINDICATORS ,RANDOM variables ,FORECASTING ,GAMES - Abstract
This study presents a dynamic Bayesian game model designed to improve predictions of ecological uncertainties leading to natural disasters. It incorporates historical signal data on ecological indicators. Participants, acting as decision-makers, receive signals about an unknown parameter-observations of a random variable's realization values before a specific time, offering insights into ecological uncertainties. The essence of the model lies in its dynamic Bayesian updating, where beliefs about unknown parameters are refined with each new signal, enhancing predictive accuracy. The main focus of our paper is to theoretically validate this approach, by presenting a number of theorems that prove its precision and efficiency in improving uncertainty estimations. Simulation results validate the model's effectiveness in various scenarios, highlighting its role in refining natural disaster forecasts. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.