{"title":"Fisheries Volume 49 Number 10 October 2024","authors":"","doi":"10.1002/fsh.11048","DOIUrl":"https://doi.org/10.1002/fsh.11048","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 10","pages":"449-500"},"PeriodicalIF":2.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Get to Know Your AFS Staff: Kelly Kotche (She/Her)","authors":"","doi":"10.1002/fsh.11179","DOIUrl":"https://doi.org/10.1002/fsh.11179","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 10","pages":"497"},"PeriodicalIF":2.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Not the Fastest nor the Strongest… But the Most Responsive to Change","authors":"Miguel Garcia-Bermudez","doi":"10.1002/fsh.11180","DOIUrl":"https://doi.org/10.1002/fsh.11180","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 10","pages":"451"},"PeriodicalIF":2.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Jeff Kopaska Named New Executive Director of the American Fisheries Society","authors":"Beth Beard","doi":"10.1002/fsh.11175","DOIUrl":"https://doi.org/10.1002/fsh.11175","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 10","pages":"494"},"PeriodicalIF":2.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brenda Pracheil, Vishvas Chalishazar, Henriette Jager, Thushara De Silva, William McDavitt, Dana McCoskey, Kathryn Jackson, Samuel Bockenhauer
Fisheries and aquatic biologists play a critical role in creating environmentally protective hydropower flow requirements that govern flow timing, frequency, magnitude, and rate of change. Hydropower's role in the U.S. electrical grid is expected to evolve in response to increased wind and solar generation as hydropower will be called upon to quickly ramp up and down in response to changes in wind and solar generation. For this reason, hydropower is expected to have increased value as fossil generation is phased out, even as rapid flow fluctuations linked with hydropower flexibility may strand fish, alter habitat, and create unsafe recreational conditions. We face a new challenge in facilitating the renewable energy transition—designing environmental flow requirements that protect against the impacts of flow fluctuations while allowing adequate hydropower flexibility to support a stable grid. In this paper, we discuss hydropower environmental flow requirements, operational flexibility, and electrical grid stability, their potential interactions, and opportunities to align environmental and power system needs to support healthy ecosystems, multiple water uses, and decarbonization of the electric grid.
{"title":"How Fisheries Biologists Can Facilitate the Clean Energy Transition","authors":"Brenda Pracheil, Vishvas Chalishazar, Henriette Jager, Thushara De Silva, William McDavitt, Dana McCoskey, Kathryn Jackson, Samuel Bockenhauer","doi":"10.1002/fsh.11168","DOIUrl":"https://doi.org/10.1002/fsh.11168","url":null,"abstract":"<p>Fisheries and aquatic biologists play a critical role in creating environmentally protective hydropower flow requirements that govern flow timing, frequency, magnitude, and rate of change. Hydropower's role in the U.S. electrical grid is expected to evolve in response to increased wind and solar generation as hydropower will be called upon to quickly ramp up and down in response to changes in wind and solar generation. For this reason, hydropower is expected to have increased value as fossil generation is phased out, even as rapid flow fluctuations linked with hydropower flexibility may strand fish, alter habitat, and create unsafe recreational conditions. We face a new challenge in facilitating the renewable energy transition—designing environmental flow requirements that protect against the impacts of flow fluctuations while allowing adequate hydropower flexibility to support a stable grid. In this paper, we discuss hydropower environmental flow requirements, operational flexibility, and electrical grid stability, their potential interactions, and opportunities to align environmental and power system needs to support healthy ecosystems, multiple water uses, and decarbonization of the electric grid.</p>","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 11","pages":"524-535"},"PeriodicalIF":2.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/fsh.11168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brian D. Healy, Michael C. Runge, Michael Beakes, Corey C. Phillis, Alexander J. Jensen, Joshua A. Israel
Trade-offs among objectives in natural resource management can be exacerbated in altered ecosystems and when there is uncertainty in predicted management outcomes. Multi-criteria decision analysis and value of information (VOI) are underutilized decision tools that can assist fisheries managers in handling trade-offs and evaluating the importance of uncertainty. We demonstrate the use of these tools using a case study in the Sacramento River, California, USA, where two imperiled species with different temperature requirements, winter-run Chinook Salmon Oncorhynchus tshawytscha and Green Sturgeon Acipenser medirostris, spawn and rear in the artificially cold Shasta Dam tailwater. A temperature-control device installed on Shasta Dam maintains cool water for Chinook Salmon; however, uncertainties exist related to the effects of temperatures on the spawning and rearing of both species. We consider four alternative hypotheses in models of early life-stage dynamics to evaluate the effects of alternative temperature management strategies on Chinook Salmon and Green Sturgeon management objectives. We used VOI to quantify the increase in management performance that can be expected by resolving hypothesis-based uncertainties as a function of the weight assigned to species-specific objectives. We found the decision was hindered by uncertainty; the best performing alternative depends on which hypothesis is true, with warmer or cooler alternative management strategies recommended when weights favor Green Sturgeon or Chinook Salmon objectives, respectively. The value of reducing uncertainty was highest when Green Sturgeon was slightly favored, highlighting the interaction between scientific uncertainty and decision makers' values. Our demonstration features multi-criteria decision analysis and VOI as transparent, deliberative tools that can assist fisheries managers in confronting value conflicts, prioritizing resolution of uncertainty, and optimally managing aquatic ecosystems.
自然资源管理目标之间的权衡在生态系统改变和管理结果预测不确定的情况下可能会加剧。多标准决策分析和信息价值（VOI）是未得到充分利用的决策工具，可帮助渔业管理人员处理权衡问题并评估不确定性的重要性。我们在美国加利福尼亚州萨克拉门托河进行了一项案例研究，展示了这些工具的使用方法。在这里，两种对温度要求不同的濒危物种--冬流大鳞大麻哈鱼（Oncorhynchus tshawytscha）和绿鲟（Acipenser medirostris）在人工低温的沙斯塔大坝尾水中产卵和繁殖。安装在沙斯塔大坝上的温度控制装置可为奇努克鲑保持凉爽的水质；但是，温度对这两种鱼产卵和育幼的影响还存在不确定性。我们在早期生命阶段动态模型中考虑了四种替代假设，以评估替代温度管理策略对大鳞鲑和绿鲟鱼管理目标的影响。我们使用 VOI 量化了通过解决基于假设的不确定性而预期提高的管理绩效，这种不确定性是分配给特定物种目标的权重的函数。我们发现，决策受到不确定性的阻碍；表现最佳的替代方案取决于哪个假设为真，当权重有利于绿鲟鱼或大鳞大麻哈鱼目标时，建议采用较热或较冷的替代管理策略。当绿鲟鱼稍受青睐时，减少不确定性的价值最高，这凸显了科学不确定性与决策者价值观之间的相互作用。我们的演示将多标准决策分析和 VOI 作为透明的审议工具，可帮助渔业管理者应对价值冲突、优先解决不确定性以及优化管理水生生态系统。
{"title":"The Value of Information is Context Dependent: A Demonstration of Decision Tools to Address Multispecies River Temperature Management Under Uncertainty","authors":"Brian D. Healy, Michael C. Runge, Michael Beakes, Corey C. Phillis, Alexander J. Jensen, Joshua A. Israel","doi":"10.1002/fsh.11174","DOIUrl":"https://doi.org/10.1002/fsh.11174","url":null,"abstract":"<p>Trade-offs among objectives in natural resource management can be exacerbated in altered ecosystems and when there is uncertainty in predicted management outcomes. Multi-criteria decision analysis and value of information (VOI) are underutilized decision tools that can assist fisheries managers in handling trade-offs and evaluating the importance of uncertainty. We demonstrate the use of these tools using a case study in the Sacramento River, California, USA, where two imperiled species with different temperature requirements, winter-run Chinook Salmon <i>Oncorhynchus tshawytscha</i> and Green Sturgeon <i>Acipenser medirostris</i>, spawn and rear in the artificially cold Shasta Dam tailwater. A temperature-control device installed on Shasta Dam maintains cool water for Chinook Salmon; however, uncertainties exist related to the effects of temperatures on the spawning and rearing of both species. We consider four alternative hypotheses in models of early life-stage dynamics to evaluate the effects of alternative temperature management strategies on Chinook Salmon and Green Sturgeon management objectives. We used VOI to quantify the increase in management performance that can be expected by resolving hypothesis-based uncertainties as a function of the weight assigned to species-specific objectives. We found the decision was hindered by uncertainty; the best performing alternative depends on which hypothesis is true, with warmer or cooler alternative management strategies recommended when weights favor Green Sturgeon or Chinook Salmon objectives, respectively. The value of reducing uncertainty was highest when Green Sturgeon was slightly favored, highlighting the interaction between scientific uncertainty and decision makers' values. Our demonstration features multi-criteria decision analysis and VOI as transparent, deliberative tools that can assist fisheries managers in confronting value conflicts, prioritizing resolution of uncertainty, and optimally managing aquatic ecosystems.</p>","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 11","pages":"508-523"},"PeriodicalIF":2.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/fsh.11174","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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