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Species richness and composition of aquatic macrophytes are influenced by morphometry and physical and chemical conditions of the aquatic body. However, the influence of these variables has not been confirmed for oxbow lakes or commonly called “cochas” in the Peruvian Amazon. 10 cochas disconnected from the main course of the river were investigated in the Southern Amazon of Peru to know 1) the species richness of aquatic macrophytes, 2) their life form, and 3) the influence of area and depth of the water body and, transparency, pH, dissolved oxygen, total dissolved solids, and temperature of the water on species richness and composition changes of aquatic macrophytes. 68 taxa were reported, where Cyperaceae and Poaceae were the most diverse families. Moreover, he predominant life forms were emergent (47,1 %) and amphibian (36,8 %). Finally, cochas with greater area, pH, and dissolved oxygen, at the same time, with lower temperature, shelter a higher species richness and favour strictly aquatic species establishment, indicating that exists a species turnover along the conformed gradient by the association of these variables. These results demonstrate that southern Amazon of Peru has an important aquatic macrophytes richness that is associated with area, pH, dissolved oxygen, and temperature of the aquatic body. [ABSTRACT FROM AUTHOR]

Guna culture for thousands of years have used plants for basic activities of life, such as: medicine, food and construction of their homes. Traditional Guna medicine with medicinal plants is part of the identity of Guna culture, although it has always been so, currently the knowledge of traditional medicine with plants is declining, since current generations are not interested in giving continuity to this cultural heritage. That is why the objective of this study, carried out from May 25 to December 2019, in the Cultural Zone of the Wilderness Area (protected) of Corregimiento de Narganá (40 hectares) through DULEINA initiative (Guna traditional medicine with medicinal plants); consisted of rescuing the knowledge of traditional medicine with greater emphasis on young people, who are the future of Guna culture. Using a qualitative approach, developing participatory dialogues with a non-probabilistic sample with key people (leaders, Guna physicians, young people and women from Guna Yala Comarca). In addition, botanist physicians, through development of workshops, trained young people on knowledge and knowledge of traditional medicine, conservation of natural resources, etc. This methodology resulted in construction of a Training and Learning Center, a Center for Attention to sick people and awareness of protection and conservation of 40 hectares that are important to maintain the diversity of medicinal plant species native to the site. [ABSTRACT FROM AUTHOR]

The productive methods of aquaponics are relatively new compared to traditional agricultural and aquaculture methods, there is a great diversity of plant and animal species that can be cultivated in a huge variety of designs and scales, which vary according to needs. Given the great challenges facing the world population, aquaponics technology has the potential to be used to address various issues, from food security, reduction of environmental impacts, economic development and social well-being. Under the need to address the global crisis, the 2030 Agenda is created, made up of 17 Sustainable Development Goals (SDGs), which from the social, economic, political and environmental fields, aims to provide solutions to a large number of problems facing the humanity. The present work is an analysis of the literature consulted through different data sources, on aquaponics projects that have been carried out in different fields, whose objectives and results are aligned directly and indirectly, with some goals of the SDGs that make up the Agenda 2030, the selection criteria was based on the principles of acupony, the sustainability approach and types of documents. It was identified that aquaponics projects have a positive impact on 11 of the 17 objectives of the agenda, through different goals. [ABSTRACT FROM AUTHOR]

Oaxaca presents a great diversity of cultures and plant species, allowing knowledge about the use of plants to become a useful tool for conservation and sustainable use. The objective of this study was to document the traditional uses of C. macrostemum and C. mexicanum and to determine the antioxidant capacity (AC) of their extracts. Interviews were applied in the towns of Santiago Apoala Nochixtlán and Tlaxiaco, a distribution map was prepared in ArCGis version 10.4.1. The collected plant material was dehydrated to obtain hydrometanolic (CmxHMet, CmcHMet) and hydroethanolic (CmxHEt, CmcHEt) extracts at 80% (v/v), the AC was determined by ABTS and FRAP techniques. As a result, medicinal use stands out. The highest yield was obtained from the hydrometanolic extract of C. macrostemum with 17.68%, however, it showed higher AC C. mexicanum (Cmx-HMet) with an IC50 of 0.7869 mg / mL for the ABTS test and for FRAP with a value of 1,687,066 ± 7,055 mM Fe2 +. It is concluded that despite being two species that maintain a similarity in uses, Cmx-HMet has a higher AC, considering that it is a species with potential for application in pharmacology, biotechnology and green technologies.. [ABSTRACT FROM AUTHOR]

Copyright of Ornitologia Colombiana is the property of Asociacion Colombiana de Ornitologia 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.)

In temperate forests, climatic and plant species diversity lead to important changes in soil respiration. The objective of this study was to analyze the respiration of the soil from changes in carbon dioxide emitted in a temperate forest in central Mexico to know its spatial and temporal variation. To do this, emissions were measured with a LI-COR continuous flow chamber (LI8100A), in winter and spring and in three forest communities: pine forest; mixed pine, oyamel and aile forest; as well as mixed pine and oyamel forest. Its relationship with vegetation cover, temperature and humidity, both environmental and soil, was explored. Statistical tests were applied to find correlations among variables, ecosystems and soil respiration. Results show that soil respiration varied both seasonally and among the different forest covers evaluated. The winter season was from 1.07 to 2.10 μmol m-2 s-1, higher for the pine forest and lower for the association of pine and oyamel. In the spring it was 1.28 to 5.15 μmol m-2 s-1, higher for the association of pine and oyamel and lower for the pine, oyamel and aile forests. Soil respiration was found to be influenced by vegetation cover, soil temperature and moisture, and weather conditions depending on the season of the year. The information will allow estimating emissions by soil respiration in temperate forests of the country. [ABSTRACT FROM AUTHOR]

The site index is the main estimate for evaluating the productivity of a forest, as it makes it easy to classify stands according to their productive potential. The objective of the present work was to determine the productivity of Pinus pseudostrobus var. oaxacana through the guide curve method, by adjusting different forest growth models. The Michailoff model statistically presented the best fit. However, the Prodan model better represents the growth pattern of Pinus pseudostrobus var. oaxacana, although statistically the models are similar, showing high significance in the relationship between growth in height and age. [ABSTRACT FROM AUTHOR]

In tropical montane forests, bryophytes are important in terms of diversity and functioning, in which epiphyllous species grow on tree leaves of trees and shrubs, and they are particularly abundant. The objective of this article was to evaluate epiphyllous bryophyte species richness and community composition in three canopy zones (low, medium, high) of a host tree in "La Amistad" International Park, Panama. From each sampled tree, six random leaves were randomly collected, two per canopy zone. A total of 48 species were recorded, of which 89% belong to Marchantiophyta and 11% to Bryophyta. The Lejeuneaceae family accounted for 70% of the species. Species richness decreased from the lowest to the highest canopy zone, however, species communities were similar between zones. Microclimatic conditions characteristic of the forest understory might have favoured greater species richness in the lower canopy zone. Further research is needed, for taking into account environmental factors and forest structure may lead to a better understanding of the observed changes in diversity. [ABSTRACT FROM AUTHOR]

Contextualization: The Paramo of Rabanal has wetlands that provide the water resource, indispensable for the development of the economy and food security of the region. This ecosystem is being altered by the pressure exerted by the various productive and economic human activities, which means that the wetland loses the capacity to retain and store water, facilitating the expansion of exotic species that increase sedimentation, reducing water retention and storage levels, degrading soil and preventing the growth of native species. The associated vegetation allows the regulation of the hydrological cycle and promotes a measure of adaptation to the changing climate. Knowledge gap: there is little information on the influence of vegetation associated with water bodies that contribute to their conservation in the wetlands of the Rabanal paramo. Purpose: identify the vascular flora present in the areas surrounding the artificial wetlands of the Rabanal paramo. Methodology: the characterization, composition and structure of vascular vegetation was carried out in the areas surrounding the Teatinos, Gachaneca I and II reservoirs in the Rabanal paramo, in the municipalities of Ventaquemada and Samacá, Boyacá, in five field trips was made the survey of 32 plots depending on the physical characteristics of the vegetation following a nested design. The plant material was processed at the Herbarium of the Pedagogical and Technological University of Colombia, Tunja (UPTC); the determination was made with the support of taxonomic keys, databases and experts. In terms of richness, diversity was compared between reservoirs using a Variance Analysis in ranges or Kruskall-Wallis test. Results and conclusions: The greatest richness of Margalef species was presented in plot P2 (5,40), the greatest dominance of Simpson was for plot P2 (0,95), the greatest diversity of Shannon corresponds to plot P2 (4,39) of the Teatinos Reservoir, the similarity index of Sörensen indicates that the reservoirs Gachaneca I and II, have 52,63% similarity. Evidence of productive and economic anthropic activities leads to loss of native vegetation and fragmentation of the ecosystem. [ABSTRACT FROM AUTHOR]

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Decree 64/2022, of May 20th, from the Consell, aims to conserve seagrass meadows in the Valencian Community. These meadows, especially Posidonia Oceanica, are of great ecological importance in the coastal areas of the Mediterranean, as they produce oxygen, organic matter, and help in the fight against climate change. Additionally, they host a wide diversity of plant and animal species, generating important ecosystem services. The decree is based on Council Directive 92/43/EEC and establishes measures for the conservation of these meadows due to their regression caused by pollution, trawling, and coastal works. The decree consists of 12 articles and came into effect on June 3rd, 2022. [Extracted from the article]

This paper records for the first time the presence in the Argentine flora of the small tree Cynophalla polyantha (Triana & Planch.) Cornejo & Iltis (Capparaceae), which was recently found in the north of the province of Salta, close to the Bolivian border. [ABSTRACT FROM AUTHOR]

Hechtia montis-frigidi, a new species from Morelos, Mexico is described and illustrated. The new taxon is compared with H. chichinautzensis and H. podantha, species with similar characteristics. [ABSTRACT FROM AUTHOR]

The growing increase in the consumption of flowers in the municipality San José de las Lajas has caused that new species of court flowers are included in the agricultural systems, and with it new handling technologies. The training in the farmers' situ, facilitated by investigators and for producing with more experience in this productive line, it was carried out through shops participatory and exchange visits. It was possible to increase the diversity in three species (chinese carnation, rose and nard) and six designed experiments were identified and driven by the producers and related with the introduction of species of flowers, associations and rotations, space arrangements and seed conservation. [ABSTRACT FROM AUTHOR]

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

The objective was to evaluate changes in the botanical composition of a natural pasture of the Central Depression of Rio Grande do Sul due to different sources of phosphorus applied. Treatments consisted of a historic of application of 470 kg ha-1.P2O in the sources single and triple super phosphate, Gafsa rock phosphate and introduction of cool season species and control. Except the control in all treatments were introduced ryegrass and clover. It was used BOTANAL method to assess flora composition. Multivariate analyzes were done ordering, by the method of principal coordinates, and randomization test, taking the Euclidean distance as a similarity measure using the software MULTIV. We identified 51 species on natural pasture. The botanical composition of the pasture was not altered by phosphorus sources when it was analyzed for all species (P= 0.262) but when it was assessed by species that contribute for more than 1% in forage mass (P= 0.066). The application of different sources of phosphorus changes the ranking order of species with higher herbage mass contribution in botanical composition of natural pasture. [ABSTRACT FROM AUTHOR]

Copyright of Boletín Científico Centro de Museos de Historia Natural is the property of Universidad de Caldas 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.)

Copyright of Boletín Científico Centro de Museos de Historia Natural is the property of Universidad de Caldas 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.)

Copyright of Boletín Científico Centro de Museos de Historia Natural is the property of Universidad de Caldas 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.)

Ethnobotanical studies of communities that inhabit estuarine areas and use the mangrove forest are limited in Colombia. In order to support management and conservation projects in the future, we studied family homegardens in rural communities in the bay of Cispatá, Colombian Caribbean. We analyzed structure, floristic composition and uses of tree species in homegardens. In a total area of 29950 m², where twelve homegardens are located, we recorded 1798 individuals (DAP ≥ 2.5 cm) belonging to 83 tree and palm species, corresponding to 32 plant families. The family Leguminosae s.l. was represented by the greatest number of species (12), followed by Annonaceae, Arecaceae and Moraceae (6). Food was the use-category with the highest number of species (46), followed by Medicine (34) and Construction (33). According to the Salience Index in the homegardens Cocos nucifera is the most important species. We found a positive relationship between number of individuals per species and its cultural importance. We recommended including native species truck in conservation strategies. [ABSTRACT FROM AUTHOR]

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Some historical errors related with the application of the names Berberis trifolia schltdl. et cham., B. ilicina schltdl. and B. schiedeana schltdl., which were assigned subsequently to the same entity, are clarified. Berberis trifolia is recognized as the valid name because it was the first one applied to the species. The type locality of this species is located near the border between the states of Puebla and Veracruz, between cuauhtotolapa (la gloria), municipality of Perote, Veracruz and tlachichuca, municipality of tlachichuca, Puebla. Berberis alpina Zamudio is described as a new species; it has been extensively confused with B. schiedeana (synonymous of B. trifolia); with which is not related. the correct identities of B. pallida Hartw. ex benth. and B. hartwegii benth. are determined, and lectotypes for B. hartwegii benth., Mahonia paxii Fedde and M. zimapana Fedde are designated. [ABSTRACT FROM AUTHOR]

Sisyrinchium guanajuatense is described and illustrated. The new species is known only from the state of Guanajuato, Mexico. It belongs to the subgenus Echthronema and is compared with some species of the S. schaffneri complex to which it relates. An identiication key for all these taxa is included. [ABSTRACT FROM AUTHOR]

Commelina congestispatha López-Ferrari, Espejo et Ceja, Commelina ramosissima López-Ferrari, Espejo et Ceja, and Commelina queretarensis López-Ferrari, Espejo et Ceja, are described and illustrated as new in this paper. The former is known from the states of Michoacán, Guanajuato and Querétaro, the second was collected in the states of Guanajuato, Querétaro and Michoacán, and the last one comes from Querétaro in the municipios of San Joaquín and Landa de Matamoros. [ABSTRACT FROM AUTHOR]

El artículo enfoca en la especie de plantas herbáceas Polygonum y seis de sus subespecies incluyendo P. aviculare, P. punctatum y P hydropiperoides. Para cada subespecie se indican las características morfológicas y anatómicas, se cita su uso y distribución geográfica general y se describe su presencia y vulnerabilidad a extinción en la zona del Bajío de México y alrededores.

Alstroemeria (Alstroemeriaceae) is a genus endemic to South America. In Chile, this genus is distributed from the northern end to Patagonia, with a diversification center in central Chile. Precisely in this central zone grows Alstroemeria ligtu with its three subspecies: A. ligtu subsp. incarnata, A. ligtu subsp. simsii and A. ligtu subsp. ligtu. A comparative study of the karyotype with DAPI or acetic orcein of 5 populations of A. ligtu subsp. ligtu from the VIII Region, and one population of A. ligtu subsp. simsii from the V Region was made. The karyotype observed in these six studied populations was asymmetric, with 2n=2x=16 chromosomes. The populations of A. ligtu subsp. ligtu presented a haploid formula conformed by four metacentric chromosomes (pairs 1 and 2 with microsatellites), one submetacentric chromosome with a microsatellite, and three telocentric chromosomes with microsatellites. The haploid formula of A. ligtu subsp. simsii was: five metacentric chromosomes (pair 2 with a microsatellite, and pair 6 with a secondary constriction) and three telocentric chromosomes with satellite. Therefore, the karyotype of A. ligtu is variable, and changes at chromosomal level have probably contributed to the diversification of this species. [ABSTRACT FROM AUTHOR]

Abundance and species diversity was studied in three zones distributed in three stratums on Guardalavaca beach. Species number per month changed in all cases and on April was observed highest value of species richness and diversity. [ABSTRACT FROM AUTHOR]

Four species of Diodia are transferred to Diodella, and the new combinations are: Diodella gardneri, Diodella mello-barretoi, Diodella sarmentosa and Diodella scandens. [ABSTRACT FROM AUTHOR]

In operated areas by the open mining, in Ocujal Mayarí, Holguín province the present study is carried out in order to know how the biodiversity and endemic are recuperated by the flora that it's associated to the cultivated mined sites after the substitution of Casuarina equisetifolia plantings. For the execution it was fell plots of Casuarina equisetifolia (pioneer specie) in the mined areas of 4, 6, 7 and 9 years of age to put in its place the native specie of the site (Pinus cubensis). A detail measurement of sottowood of different replicated plots of Pino was carried out, in which was estimated the quantity of species in different stratum, as the quantity of individual by specie and families and other datums of interest: endemic, distribution and vital form. [ABSTRACT FROM AUTHOR]

Tantoyuca, Veracruz presents a great diversity of vegetation in the pasturelands and its main economic activity is cattle ranching, in which two production systems are managed (dairy and meat). The objective of this work was to assess the vegetation present in the dairy and meat production systems of the grasslands of Tantoyuca, Veracruz, Mexico. The floristic composition, structure, diversity, richness and conservation value were estimated from the inventory and abundance of plant species obtained by sampling by linear transects in ten dairy or meat producing pastures. The Shannon and Simpson true diversity indices were generated and the relative abundances of the vegetation diversity were obtained. The relationship between species diversity and grasslands was performed with the X2 test. An inventory of pastures used in rangelands was represented on a vector map with the information obtained from 76 surveyed ranchers. 130 species, 153 genera and 75 families were identified, distributed in 68.4% herbs, 29.5% shrubs and 2% vines, and the similarity of plant diversity in both systems (dairy and meat) was evidenced. The most commonly used grasses are Brachiaria decumbens Stapf and Cynodon nlemfuensis Vanderyst. In both systems there are high incidences of native legumes and species that indicate poor grazing management such as: Desmodium incanum (Sw.) DC. and Achyranthes aspera L. Based on the sampling of herbaceous, shrub and liana vegetation, the high presence of native and naturalized species that can be used in the pasturelands was highlighted. [ABSTRACT FROM AUTHOR]

This study was conducted to evaluate the effect of management on species diversity in a natural grassland of the expe rimental area of the Rangeland Ecology Laboratory (LEPAN), Universidade Federal de Santa Maria/Rio Grande do Sul, Brazil which has been submitted to different fire and grazing regimes along 16 years. Treatments consisted of the combination of burning and grazing factors in convex and conc ave slope positions in a completely randomized design. Grazing was rotational with rest intervals calculated by accumulated therma l time (760 deg ree days) require d for the expansion of four leaves of Paspalum notatum and Andropogon lateralis. Botanical composition was determined using the BOTANAL method from 2006 to 2011. Data on number (n°) of species and Shannon index were analyzed by randomization tests in an analysis of variance using MULTIV software. Grazing had the strongest (P =0.036) influence on Shannon index and number of species. There was an interaction between grazing and relief position (P =0.052) and grazing and burning (P =0.07). There was significant difference for grazing in concave slope and for grazing on burned areas. We can conclude that management history, as well as type of disturbance affects richness and diversity of species. [ABSTRACT FROM AUTHOR]