环境因素和种群丰度对佛罗里达雪松基斑点斑鲷年级强度的影响

IF 1.8 3区 农林科学 Q2 FISHERIES
Samara Nehemiah, David Chagaris, Susan Lowerre-Barbieri, Micheal Allen
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引用次数: 2

摘要

环境压力可以通过影响幼鱼的生长和生存以及成鱼栖息地的利用和行为来影响河口鱼类的补充。确定年度实力的潜在驱动因素是评估种群健康和实施管理决策的重要工具。本研究的目的是确定环境因素和成虫种群是如何影响佛罗里达雪松岛斑点西雅图云杉的招录趋势的。幼鱼丰度指数是利用佛罗里达鱼类和野生动物保护委员会渔业独立监测项目的抽样数据生成的。young -of- year丰度指数表明,在该系统中,年度招聘人数是可变的,并且在1996-2018年的大部分时间序列中都有所下降。产卵季节的水温和成虫丰度是预测斑鹭招工最显著的变量,二者均与招工呈正相关。盐度和河流流量不是预测斑鲷年强度的显著环境变量。我们的研究结果表明,招养与水温和成鱼丰度的年际变化有关,这可以用来探讨斑鲷的招养动态在种群评估、管理决策以及气候变化导致的海水变暖等方面的变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Environmental Factors and Stock Abundance Influence Year-Class Strength of Spotted Seatrout at Cedar Key, Florida

Environmental Factors and Stock Abundance Influence Year-Class Strength of Spotted Seatrout at Cedar Key, Florida

Environmental pressures can influence recruitment of estuarine fishes by impacting growth and survival of juveniles as well as adult habitat use and behavior. Identifying potential drivers of year-class strength is an important tool for assessing stock health and implementing management decisions. The goal of this study was to determine how environmental factors and adult stock influence trends in recruitment of Spotted Seatrout Cynoscion nebulosus in Cedar Key, Florida. Juvenile indices of abundance were generated using sampling data from the Florida Fish and Wildlife Conservation Commission’s Fisheries-Independent Monitoring program. Young-of-the-year indices of abundance suggested that annual recruitment was variable in this system and declined throughout the majority of the 1996–2018 time series. Adult abundance and water temperature in the spawning season were the most significant variables in predicting Spotted Seatrout recruitment, and both had positive relationships with recruitment. Salinity and river discharge were not significant environmental variables in predicting year-class strength of Spotted Seatrout in this study. Our results indicated that recruitment was associated with interannual changes in water temperature and adult abundance, which could be used to explore how Spotted Seatrout recruitment dynamics could vary for stock assessments, for management decisions, and as a result of warming waters due to climate change.

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来源期刊
Marine and Coastal Fisheries
Marine and Coastal Fisheries FISHERIES-MARINE & FRESHWATER BIOLOGY
CiteScore
3.40
自引率
5.90%
发文量
40
审稿时长
>12 weeks
期刊介绍: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science publishes original and innovative research that synthesizes information on biological organization across spatial and temporal scales to promote ecologically sound fisheries science and management. This open-access, online journal published by the American Fisheries Society provides an international venue for studies of marine, coastal, and estuarine fisheries, with emphasis on species'' performance and responses to perturbations in their environment, and promotes the development of ecosystem-based fisheries science and management.
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