Understanding the dynamics of fish spawning phenology and habitat in a changing ecosystem using a long-term ichthyoplankton monitoring dataset

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Noah Hunt, Katrina Rokosz, Yong Chen
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引用次数: 0

Abstract

As ecosystems change, understanding the consequences for fish population dynamics and habitat use is essential for their management. Using white perch (Morone americana) survey data on early life stages collected during a long-term ichthyoplankton monitoring program in the Hudson River (New York, USA), an ecosystem under immense pressure from climate change, ecological shifts, and anthropogenic activities, we evaluated the drivers of changes in egg abundance and spawning habitat between 1980-2017. Results indicated that egg abundance is associated nonlinearly with temperature, conductivity, discharge, depth, location, and the week of year. Additionally, large changes in hotspots of spawning activity within the Hudson River were identified and the lower extent of spawning habitat has moved upriver since 1980. We also found that egg abundance has declined within the river over time. This study indicates that the dynamics of white perch early life histories and spawning habitat are changing. It also highlights the utility of a long-term monitoring program for broadening our understanding of fish ecology in the age of big data in changing ecosystems.
利用鱼类浮游生物长期监测数据集,了解不断变化的生态系统中鱼类产卵表型和生境的动态变化
随着生态系统的变化,了解对鱼类种群动态和栖息地利用的影响对其管理至关重要。哈德逊河(美国纽约)是一个受到气候变化、生态变化和人类活动巨大压力的生态系统,我们利用哈德逊河长期鱼类浮游生物监测项目中收集的白鲈(Morone americana)早期生命阶段的调查数据,评估了 1980-2017 年间鱼卵丰度和产卵栖息地变化的驱动因素。结果表明,鱼卵丰度与温度、电导率、排水量、水深、位置和年份的周次呈非线性关系。此外,我们还发现哈德逊河内产卵活动的热点地区发生了巨大变化,自 1980 年以来,产卵栖息地的较低范围已向上游移动。我们还发现,随着时间的推移,河内的鱼卵丰度也在下降。这项研究表明,白鲈早期生活史和产卵栖息地的动态正在发生变化。它还强调了长期监测计划在生态系统变化的大数据时代拓宽我们对鱼类生态学认识的作用。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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