12 results on '"Phang SC"'
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2. Predicting salmonid population ecology from individual fish responses to environmental changes: bridging behaviour, conservation and fisheries management
- Author
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Phang, SC
- Subjects
bb - Abstract
Current habitat-association models used in the management of the socio-economically and ecologically important chalk stream salmonid populations fail to incorporate fish behaviour and the interactions between fish with their environment and this limits their ability predicting management-relevant salmonid population responses to environmental change. A salmonid individual-based model is parameterised to predict fish distributions and growth as the modelling approach address the weaknesses of current models. Virtual forager parameters are derived from published investigations and models of salmonid behaviour and bioenergetics. Data from three field studies at the same chalk stream site are used to describe the environment and initial fish population with subsequent data on fish population patterns used to statistically validate the IBM. I found that current recommendations for population enhancement may be futile beyond a threshold population density and regimes that address habitat quality should be adopted. Potential parasite impacts are investigated theoretically by simulations on the mode of impact on their host and identify the most population damaging parasites as those with high effect on host physiology. The management of salmonid predators in fisheries is predicted to have little benefit to salmonid growth and should not be implemented. Additionally, the removal of the dominant aquatic macrophyte for flood risk management is potentially damaging to salmonid populations and recommendations for a sympathetic design are provided. The model described here can be used to produce robust predictions of salmonid population patterns in riverine habitat and allows users to test the impact of environmental change on salmonids to be used for proactive management in light of current rates of environmental change.
3. Predicting salmonid population ecology from individual fish responses to environmental changes: bridging behaviour, conservation and fisheries management.
- Author
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Phang, SC and Phang, SC
- Abstract
Current habitat-association models used in the management of the socio-economically and ecologically important chalk stream salmonid populations fail to incorporate fish behaviour and the interactions between fish with their environment and this limits their ability predicting management-relevant salmonid population responses to environmental change. A salmonid individual-based model is parameterised to predict fish distributions and growth as the modelling approach address the weaknesses of current models. Virtual forager parameters are derived from published investigations and models of salmonid behaviour and bioenergetics. Data from three field studies at the same chalk stream site are used to describe the environment and initial fish population with subsequent data on fish population patterns used to statistically validate the IBM. I found that current recommendations for population enhancement may be futile beyond a threshold population density and regimes that address habitat quality should be adopted. Potential parasite impacts are investigated theoretically by simulations on the mode of impact on their host and identify the most population damaging parasites as those with high effect on host physiology. The management of salmonid predators in fisheries is predicted to have little benefit to salmonid growth and should not be implemented. Additionally, the removal of the dominant aquatic macrophyte for flood risk management is potentially damaging to salmonid populations and recommendations for a sympathetic design are provided. The model described here can be used to produce robust predictions of salmonid population patterns in riverine habitat and allows users to test the impact of environmental change on salmonids to be used for proactive management in light of current rates of environmental change.
4. Understanding interobserver variability of pathologists to improve oral epithelial dysplasia grading.
- Author
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Ng GTE, Phang SC, Yu KS, Tiwari L, Khurram SA, Sloan P, and Kujan O
- Abstract
Objective: This study aimed to understand reasons for interobserver variability in the grading of oral epithelial dysplasia (OED) through a survey of pathologists to provide insight for improvements in the reliability and reproducibility of OED diagnoses., Methods: The study design included quantitative and qualitative methodology. A pre-validated 31-item questionnaire was distributed to general, head and neck, and oral and maxillofacial histopathology specialists worldwide., Results: A total of 132 pathologists participated and completed the questionnaire. Over two-thirds used the three-tier grading system for OED, while about a third used both binary and three-tier systems. Regular reporters of OED preferred the three-tier system and grading architectural features. Continuing education significantly aided recognition of architectural and cytological changes. Irregular epithelial stratification and drop-shaped rete ridges had the lowest prognostic value and recognition scores, while loss of epithelial cell cohesion had the highest. Most participants used clinical information and often sought a second opinion when grading OED., Conclusion: Our study has found that frequency of OED reporting and attendance of CME/CPD can play an important role in grading OED. Variations in the prognostic value of individual histological features and the use of clinical information may further contribute to interobserver variability., (© 2024 The Author(s). Oral Diseases published by John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
5. Inland recreational fisheries contribute nutritional benefits and economic value but are vulnerable to climate change.
- Author
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Lynch AJ, Embke HS, Nyboer EA, Wood LE, Thorpe A, Phang SC, Viana DF, Golden CD, Milardi M, Arlinghaus R, Baigun C, Beard TD Jr, Cooke SJ, Cowx IG, Koehn JD, Lyach R, Potts W, Robertson AM, Schmidhuber J, and Weyl OLF
- Subjects
- Humans, Animals, Fishes, Canada, Germany, Austria, Slovakia, Conservation of Natural Resources economics, Fresh Water, Climate Change economics, Fisheries economics, Recreation, Nutritive Value
- Abstract
Inland recreational fishing is primarily considered a leisure-driven activity in freshwaters, yet its harvest can contribute to food systems. Here we estimate that the harvest from inland recreational fishing equates to just over one-tenth of all reported inland fisheries catch globally. The estimated total consumptive use value of inland recreational fish destined for human consumption may reach US$9.95 billion annually. We identify Austria, Canada, Germany and Slovakia as countries above the third quantile for nutrition, economic value and climate vulnerability. These results have important implications for populations dependent on inland recreational fishing for food. Our findings can inform climate adaptation planning for inland recreational fisheries, particularly those not currently managed as food fisheries., (© 2024. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)
- Published
- 2024
- Full Text
- View/download PDF
6. Corrigendum to "Priorities to inform research on marine plastic pollution in Southeast Asia" [Sci. Total Environ. volume 841 (2022) Article 156704].
- Author
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Omeyer LCM, Duncan EM, Aiemsomboon K, Beaumont N, Bureekul S, Cao B, Carrasco LR, Chavanich S, Clark JR, Cordova MR, Couceiro F, Cragg SM, Dickson N, Failler P, Ferraro G, Fletcher S, Fong J, Ford AT, Gutierrez T, Hamid FS, Hiddink JG, Hoa PT, Holland SI, Jones L, Jones NH, Koldewey H, Lauro FM, Lee C, Lewis M, Marks D, Matallana-Surget S, Mayorga-Adame CG, McGeehan J, Messer LF, Michie L, Miller MA, Mohamad ZF, Nor NHM, Müller M, Neill SP, Nelms SE, Onda DFL, Ong JJL, Pariatamby A, Phang SC, Quilliam R, Robins PE, Salta M, Sartimbul A, Shakuto S, Skov MW, Taboada EB, Todd PA, Toh TC, Valiyaveettil S, Viyakarn V, Wonnapinij P, Wood LE, Yong CLX, and Godley BJ
- Abstract
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
- Published
- 2023
- Full Text
- View/download PDF
7. Priorities to inform research on marine plastic pollution in Southeast Asia.
- Author
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Omeyer LCM, Duncan EM, Aiemsomboon K, Beaumont N, Bureekul S, Cao B, Carrasco LR, Chavanich S, Clark JR, Cordova MR, Couceiro F, Cragg SM, Dickson N, Failler P, Ferraro G, Fletcher S, Fong J, Ford AT, Gutierrez T, Shahul Hamid F, Hiddink JG, Hoa PT, Holland SI, Jones L, Jones NH, Koldewey H, Lauro FM, Lee C, Lewis M, Marks D, Matallana-Surget S, Mayorga-Adame CG, McGeehan J, Messer LF, Michie L, Miller MA, Mohamad ZF, Nor NHM, Müller M, Neill SP, Nelms SE, Onda DFL, Ong JJL, Pariatamby A, Phang SC, Quilliam R, Robins PE, Salta M, Sartimbul A, Shakuto S, Skov MW, Taboada EB, Todd PA, Toh TC, Valiyaveettil S, Viyakarn V, Wonnapinij P, Wood LE, Yong CLX, and Godley BJ
- Subjects
- Asia, Southeastern, Environmental Monitoring, Environmental Pollution, Philippines, Waste Products analysis, Ecosystem, Plastics
- Abstract
Southeast Asia is considered to have some of the highest levels of marine plastic pollution in the world. It is therefore vitally important to increase our understanding of the impacts and risks of plastic pollution to marine ecosystems and the essential services they provide to support the development of mitigation measures in the region. An interdisciplinary, international network of experts (Australia, Indonesia, Ireland, Malaysia, the Philippines, Singapore, Thailand, the United Kingdom, and Vietnam) set a research agenda for marine plastic pollution in the region, synthesizing current knowledge and highlighting areas for further research in Southeast Asia. Using an inductive method, 21 research questions emerged under five non-predefined key themes, grouping them according to which: (1) characterise marine plastic pollution in Southeast Asia; (2) explore its movement and fate across the region; (3) describe the biological and chemical modifications marine plastic pollution undergoes; (4) detail its environmental, social, and economic impacts; and, finally, (5) target regional policies and possible solutions. Questions relating to these research priority areas highlight the importance of better understanding the fate of marine plastic pollution, its degradation, and the impacts and risks it can generate across communities and different ecosystem services. Knowledge of these aspects will help support actions which currently suffer from transboundary problems, lack of responsibility, and inaction to tackle the issue from its point source in the region. Being profoundly affected by marine plastic pollution, Southeast Asian countries provide an opportunity to test the effectiveness of innovative and socially inclusive changes in marine plastic governance, as well as both high and low-tech solutions, which can offer insights and actionable models to the rest of the world., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
8. Addressing the implementation challenge of the global biodiversity framework.
- Author
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Phang SC, Failler P, and Bridgewater P
- Abstract
A Global Biodiversity Framework (GBF) is under discussion for the period 2021-2030, which will replace the "Aichi Targets" adopted by the Convention on Biological Diversity (CBD) in 2010. Given the limited success in meeting most of the Aichi Targets, this new framework must adopt a different approach. A key challenge the GBF must address is its implementation at national scales. Four ways this implementation challenge can be addressed include:The framework must move away from numerical targets to pursue positive trends in biodiversity, through adopting a "vectors of change" approach;The framework should be structured to focus on ecosystems and processes;The framework should synergise more extensively with existing biodiversity-relevant global agreements to maximise leverage and reduce overlap of resource use;The framework must adopt a much stronger theory of change than is in the current GBF Draft, to serve as the roadmap governments can use in upscaling their implementation of biodiversity conservation, sustainable use and benefit sharing. Finally, the GBF must become a "learning framework", committed to facilitating and enabling governments to each meet their specific biodiversity challenges, while sharing back experiences with the global community, leading ultimately to realising the 2050 CBD vision of people living in harmony with nature., Competing Interests: Conflict of interestAll authors declares that they have no conflict of interest., (© The Author(s) 2020.)
- Published
- 2020
- Full Text
- View/download PDF
9. Evaluating the official achievement of Aichi Target 11 for West African countries: A twofold challenge of accuracy and catching-up.
- Author
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Failler P, Touron-Gardic G, Traoré MS, and Phang SC
- Abstract
Since Aichi Target 11 imposes 10% of national protected marine surface by 2020, the least developed countries have particularly shortcomings towards this goal, this article evaluates the progress of seven West African countries. We compared the area reportedly protected sites from two different sources, the world database on protected areas (WDPA) - which is the official tool to monitor the Aichi 11 Achievements - and the West African Marine Protected Area Network, which conducted a comprehensive survey in collaboration with the national institutions in charge of MPAs. Overall, the countries included in this study are unlikely to achieve the Aichi target. Comparing WDPA protected area figures against database created directly from national data showed large discrepancies. According to national data, Mauritania (3.71%) and Guinea-Bissau (2.15%) had the highest protected areas. Senegal had 1.61% of his EEZ under protection, while other countries had <1%. The difference between WDPA and national data was high with Guinea-Bissau already at 10% of EEZ protected areas status according to the WDPA. WDPA overestimated 5935 km
2 of MPAs, corresponding to 41% of the actual total area. Possible explanations for the differences include: countries not transmitting information or doing so incorrectly; methodological transformations of data are inducing errors; and multiple MPA statutes leading to double counting of protected areas. This study also shows that for these countries, to achieve Aichi Target 11, large offshore MPAs are the only viable option, and therefore identifies potential sites, that should be considered in addition to conservation of coastal zones. However, their viability may be constrained due to oil activities and lucrative fishing. The increasingly anthropized littoral zone offers less space favourable to MPAs, while 138,723 km2 still need to be covered in these countries to reach 10% of marine protected area., (Crown Copyright © 2019. Published by Elsevier B.V. All rights reserved.)- Published
- 2020
- Full Text
- View/download PDF
10. Incoming Work-In-Progress Prediction in Semiconductor Fabrication Foundry Using Long Short-Term Memory.
- Author
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Tin TC, Chiew KL, Phang SC, Sze SN, and Tan PS
- Subjects
- Forecasting, Reproducibility of Results, Semiconductors, Time Factors, Machine Learning, Memory, Long-Term physiology, Memory, Short-Term physiology, Neural Networks, Computer
- Abstract
Preventive maintenance activities require a tool to be offline for long hour in order to perform the prescribed maintenance activities. Although preventive maintenance is crucial to ensure operational reliability and efficiency of the tool, long hour of preventive maintenance activities increases the cycle time of the semiconductor fabrication foundry (Fab). Therefore, this activity is usually performed when the incoming Work-in-Progress to the equipment is forecasted to be low. The current statistical forecasting approach has low accuracy because it lacks the ability to capture the time-dependent behavior of the Work-in-Progress. In this paper, we present a forecasting model that utilizes machine learning method to forecast the incoming Work-In-Progress. Specifically, our proposed model uses LSTM to forecast multistep ahead incoming Work-in-Progress prediction to an equipment group. The proposed model's prediction results were compared with the results of the current statistical forecasting method of the Fab. The experimental results demonstrated that the proposed model performed better than the statistical forecasting method in both hit rate and Pearson's correlation coefficient, r .
- Published
- 2019
- Full Text
- View/download PDF
11. Emergent sustainability in open property regimes.
- Author
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Moritz M, Behnke R, Beitl CM, Bliege Bird R, Chiaravalloti RM, Clark JK, Crabtree SA, Downey SS, Hamilton IM, Phang SC, Scholte P, and Wilson JA
- Subjects
- Agriculture, Conservation of Natural Resources, Ecosystem, Fisheries, Humans, Ownership, Models, Theoretical, Resource Allocation
- Abstract
Current theoretical models of the commons assert that common-pool resources can only be managed sustainably with clearly defined boundaries around both communities and the resources that they use. In these theoretical models, open access inevitably leads to a tragedy of the commons. However, in many open-access systems, use of common-pool resources seems to be sustainable over the long term (i.e., current resource use does not threaten use of common-pool resources for future generations). Here, we outline the conditions that support sustainable resource use in open property regimes. We use the conceptual framework of complex adaptive systems to explain how processes within and couplings between human and natural systems can lead to the emergence of efficient, equitable, and sustainable resource use. We illustrate these dynamics in eight case studies of different social-ecological systems, including mobile pastoralism, marine and freshwater fisheries, swidden agriculture, and desert foraging. Our theoretical framework identifies eight conditions that are critical for the emergence of sustainable use of common-pool resources in open property regimes. In addition, we explain how changes in boundary conditions may push open property regimes to either common property regimes or a tragedy of the commons. Our theoretical model of emergent sustainability helps us to understand the diversity and dynamics of property regimes across a wide range of social-ecological systems and explains the enigma of open access without a tragedy. We recommend that policy interventions in such self-organizing systems should focus on managing the conditions that are critical for the emergence and persistence of sustainability., Competing Interests: The authors declare no conflict of interest., (Copyright © 2018 the Author(s). Published by PNAS.)
- Published
- 2018
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12. FishMORPH - An agent-based model to predict salmonid growth and distribution responses under natural and low flows.
- Author
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Phang SC, Stillman RA, Cucherousset J, Britton JR, Roberts D, Beaumont WR, and Gozlan RE
- Subjects
- Animals, Behavior, Animal, Calibration, Climate Change, Computer Simulation, Ecology, Models, Biological, Predatory Behavior, Rivers, Software, Water Movements, Animal Distribution, Ecosystem, Fisheries, Salmonidae physiology, Seasons, Systems Analysis
- Abstract
Predicting fish responses to modified flow regimes is becoming central to fisheries management. In this study we present an agent-based model (ABM) to predict the growth and distribution of young-of-the-year (YOY) and one-year-old (1+) Atlantic salmon and brown trout in response to flow change during summer. A field study of a real population during both natural and low flow conditions provided the simulation environment and validation patterns. Virtual fish were realistic both in terms of bioenergetics and feeding. We tested alternative movement rules to replicate observed patterns of body mass, growth rates, stretch distribution and patch occupancy patterns. Notably, there was no calibration of the model. Virtual fish prioritising consumption rates before predator avoidance replicated observed growth and distribution patterns better than a purely maximising consumption rule. Stream conditions of low predation and harsh winters provide ecological justification for the selection of this behaviour during summer months. Overall, the model was able to predict distribution and growth patterns well across both natural and low flow regimes. The model can be used to support management of salmonids by predicting population responses to predicted flow impacts and associated habitat change.
- Published
- 2016
- Full Text
- View/download PDF
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