2007 Jones and Cresswell 2010 Hazen et al. These rapid shifts in the distribution of animal populations may lead to stressful conditions, a mismatch in resources, or changes in the timing of life history events (Durant et al. However, animal movements and space use can also be driven by unpredictable disturbances or abrupt environmental changes. Animals frequently move in response to predictable or recurrent physiological or environmental cues, including factors related to interspecific interactions, changing habitat requirements, or migration into breeding areas (Bowler and Benton 2005 Hussey et al. The spatiotemporal dynamics of movement influence the structure and function of populations, communities, and ecosystems, with implications ranging from the survival of individuals to the flow of energy through food webs (Nathan et al. Understanding animal movement is a central concern in ecology.
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. 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. 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.
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. 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.
However, our understanding of the scale of movement responses and how they vary across taxa and ecosystems remains incomplete.
Extreme climate events such as hurricanes can influence the movement and distribution of fish and other aquatic vertebrates.
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