{"title":"Get to Know Your AFS Staff: Caroline Davis (they/them)","authors":"Caroline Davis","doi":"10.1002/fsh.11143","DOIUrl":"10.1002/fsh.11143","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 7","pages":"343"},"PeriodicalIF":2.4,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529270","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}
Hydroelectric dams in the northeastern United States pose a challenge to the upstream spawning migrations of anadromous fishes, such as American Shad Alosa sapidissima, Alewife A. pseudoharengus, Blueback Herring A. aestivalis, Atlantic Salmon Salmo salar, and Sea Lamprey Petromyzon marinus. One response has been the construction and operation of fish lifts. A drawback of this solution is that fish lifts can be shut down. This study sought to determine how often fish lifts on major northeastern rivers (including lifts at the Cataract, Lockwood, and Milford dams in Maine; Holyoke Dam in Massachusetts; Scotland Dam in Connecticut; and Conowingo Dam in Maryland) shut down during their respective passage seasons and the causes for these shutdowns. We found that these lifts did not operate for 8–26% of their passage seasons, on average, with the mean season length lasting between 49 and 205 d. The causes for shutdowns were categorized as physical, mechanical, scheduling, other, or none given, with the primary cause varying among dams. Our results demonstrate an important weakness of fish lifts as a passage solution and, in turn, highlight the need for measures that limit disruptions to lifting where dam removal is not possible and strengthen the case for dam removal.
美国东北部的水电大坝对溯河洄游鱼类的上游产卵洄游构成了挑战，这些鱼类包括美洲鲥鱼（Alosa sapidissima）、鳕鱼（Alewife A. pseudoharengus）、蓝背鲱鱼（A. aestivalis）、大西洋鲑鱼（Salmo salar）和海灯笼鱼（Petromyzon marinus）。一种应对方法是建造和运行提鱼机。这种解决方案的一个缺点是，提鱼机可能会被关闭。本研究试图确定东北部主要河流（包括缅因州的卡塔拉克、洛克伍德和米尔福德大坝；马萨诸塞州的霍利约克大坝；康涅狄格州的苏格兰大坝；马里兰州的科诺温戈大坝）的鱼类升降机在各自的通过季节关闭的频率以及关闭的原因。我们发现，这些升降机平均有 8-26% 的通过季节没有运行，平均通过季节长度在 49 到 205 d 之间。造成停运的原因分为物理、机械、调度、其他或未说明，主要原因因水坝而异。我们的研究结果表明了提鱼机作为一种通过解决方案的一个重要弱点，并反过来强调了在不可能拆除大坝的情况下采取措施限制提鱼机中断的必要性，并加强了拆除大坝的理由。
{"title":"Causes of Fish Lift Shutdowns on U.S. East Coast Hydroelectric Dams","authors":"Kayleigh Kearnan, John Waldman","doi":"10.1002/fsh.11107","DOIUrl":"https://doi.org/10.1002/fsh.11107","url":null,"abstract":"<p>Hydroelectric dams in the northeastern United States pose a challenge to the upstream spawning migrations of anadromous fishes, such as American Shad <i>Alosa sapidissima</i>, Alewife <i>A. pseudoharengus</i>, Blueback Herring <i>A. aestivalis</i>, Atlantic Salmon <i>Salmo salar</i>, and Sea Lamprey <i>Petromyzon marinus</i>. One response has been the construction and operation of fish lifts. A drawback of this solution is that fish lifts can be shut down. This study sought to determine how often fish lifts on major northeastern rivers (including lifts at the Cataract, Lockwood, and Milford dams in Maine; Holyoke Dam in Massachusetts; Scotland Dam in Connecticut; and Conowingo Dam in Maryland) shut down during their respective passage seasons and the causes for these shutdowns. We found that these lifts did not operate for 8–26% of their passage seasons, on average, with the mean season length lasting between 49 and 205 d. The causes for shutdowns were categorized as physical, mechanical, scheduling, other, or none given, with the primary cause varying among dams. Our results demonstrate an important weakness of fish lifts as a passage solution and, in turn, highlight the need for measures that limit disruptions to lifting where dam removal is not possible and strengthen the case for dam removal.</p>","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 9","pages":"403-411"},"PeriodicalIF":2.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142160225","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":"AFS Social Events Part II: Guide for Introverts","authors":"Jason Link","doi":"10.1002/fsh.11138","DOIUrl":"10.1002/fsh.11138","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 7","pages":"301-302"},"PeriodicalIF":2.4,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141344353","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":"Microcertification as an Avenue to Diversify Pathways and Opportunities for AFS Professional Certification","authors":"Cecil A. Jennings, Marlis R. Douglas","doi":"10.1002/fsh.11111","DOIUrl":"10.1002/fsh.11111","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 7","pages":"295-297"},"PeriodicalIF":2.4,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141355006","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 a Load of THIS Guy!","authors":"","doi":"10.1002/fsh.11140","DOIUrl":"10.1002/fsh.11140","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 7","pages":"348"},"PeriodicalIF":2.4,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141355775","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":"Fisheries Volume 49 Number 6 June 2024","authors":"","doi":"10.1002/fsh.11044","DOIUrl":"https://doi.org/10.1002/fsh.11044","url":null,"abstract":"","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 6","pages":"245-292"},"PeriodicalIF":2.8,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141308891","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}
Timothy Copeland, Jonathan D. Ebel, Ryan N. Kinzer, Matthew P. Corsi
Evaluation of goals is crucial for effective management to conserve viable and diverse fish populations and to support harvest. Management of wild Chinook Salmon Oncorhynchus tshawytscha in the Snake River basin exemplifies the struggle to meet fisheries goals. Considering contemporary production of juvenile emigrants, it is imperative to determine the survival from emigration to adult (Se-a) required to meet abundance goals. Increased anthropogenic impact on spawning and rearing habitats leads to higher Se-a required to attain goals. Wilderness populations exhibit viability and could sustain fisheries with Se-a lower than required elsewhere. Conversely, populations targeted for habitat restoration demand higher Se-a to fulfill goals, indicating a need to enhance egg-to-smolt survival. However, Se-a has fallen below the threshold needed for replacement in all populations, even at current low abundances. Despite these challenges, most populations still possess the potential to achieve abundance goals, emphasizing the importance of strategic interventions to bolster their resilience.
{"title":"How do Management Goals for Wild Chinook Salmon Align with Feasibility?","authors":"Timothy Copeland, Jonathan D. Ebel, Ryan N. Kinzer, Matthew P. Corsi","doi":"10.1002/fsh.11108","DOIUrl":"10.1002/fsh.11108","url":null,"abstract":"<p>Evaluation of goals is crucial for effective management to conserve viable and diverse fish populations and to support harvest. Management of wild Chinook Salmon <i>Oncorhynchus tshawytscha</i> in the Snake River basin exemplifies the struggle to meet fisheries goals. Considering contemporary production of juvenile emigrants, it is imperative to determine the survival from emigration to adult (<i>S</i><sub><i>e-a</i></sub>) required to meet abundance goals. Increased anthropogenic impact on spawning and rearing habitats leads to higher <i>S</i><sub><i>e-a</i></sub> required to attain goals. Wilderness populations exhibit viability and could sustain fisheries with <i>S</i><sub><i>e-a</i></sub> lower than required elsewhere. Conversely, populations targeted for habitat restoration demand higher <i>S</i><sub><i>e-a</i></sub> to fulfill goals, indicating a need to enhance egg-to-smolt survival. However, <i>S</i><sub><i>e-a</i></sub> has fallen below the threshold needed for replacement in all populations, even at current low abundances. Despite these challenges, most populations still possess the potential to achieve abundance goals, emphasizing the importance of strategic interventions to bolster their resilience.</p>","PeriodicalId":12389,"journal":{"name":"Fisheries","volume":"49 9","pages":"412-422"},"PeriodicalIF":2.4,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/fsh.11108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141195376","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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