Going Downriver: Patterns and Cues in Hurricane-Driven Movements of Common Snook in a Subtropical Coastal River
Going Downriver: Patterns and Cues in Hurricane-Driven Movements of Common Snook in a Subtropical Coastal River
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DOI：
10.1007/s12237-019-00617-y
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发表时间：
2020-07-01
影响因子：
2.7
通讯作者：
Rehage, Jennifer S.
中科院分区：
文献类型：
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作者：
Massie, Jordan A.;Strickland, Bradley A.;Rehage, Jennifer S.
飓风等极端气候事件会影响鱼类和其他水生脊椎动物的运动和分布。然而，我们对运动反应的规模以及它们如何在不同的分类群和生态系统中变化的理解仍然不完整。在这项研究中，我们使用声学遥测数据调查了在飓风“厄玛”期间佛罗里达沿海大沼泽地常见的雪雀（Centropomus undecimalis）的运动模式。飓风“厄玛”于2017年9月10日在佛罗里达西南海岸登陆，经过我们的研究地点附近，形成3级风暴。我们假设飓风导致了分布的变化，这些变化可能是由与飓风条件相关的气压变化、表征河流条件变化的水位（阶段）波动或飓风和河流驱动因素的结合引起的。数据显示，在飓风通过前后的一段时间内，常见的鱼会大规模移动，73%的鱼被检测到从上游河流迁移到下游栖息地，一些个体可能会离开河流。此外，回归模型选择表明，这些运动与飓风和河流条件都相关，在高河段和低气压时，常见的斯诺克运动增加，并且阶段解释了更大比例的模式偏差。动物运动具有广泛而多样的生态影响，通过更好地了解推动运动的因素，我们可以预测未来极端气候事件如何影响易受影响地区的鱼类种群。
Extreme climate events such as hurricanes can influence the movement and distribution of fish and other aquatic vertebrates. However, our understanding of the scale of movement responses and how they vary across taxa and ecosystems remains incomplete. In this study, we used acoustic telemetry data to investigate the movement patterns of common snook (Centropomus undecimalis) in the Florida Coastal Everglades during Hurricane Irma, which made landfall on the southwest Florida coast as a Category 3 storm on 10 September 2017 after passing in close proximity to our study site. We hypothesized that the hurricane resulted in shifts in distribution and that these movements may have been driven by environmental cues stemming from changes in barometric pressure associated with hurricane conditions, fluctuations in water levels (stage) characterizing altered riverine conditions, or a combination of both hurricane and riverine drivers. The data revealed large-scale movements of common snook in the time period surrounding hurricane passage, with 73% of fish detected moving from the upper river into downriver habitats, and some individuals potentially exiting the river. Furthermore, regression model selection indicated that these movements were correlated to both hurricane and riverine conditions, showing increased common snook movement at higher river stage and lower barometric pressure, and stage explaining a larger proportion of model deviance. Animal movement has widespread and diverse ecological implications, and by better understanding the factors that drive movement, we may anticipate how future extreme climate events could affect fish populations in impact-prone regions.