Temporal community structure and seasonal climatic migration of coastal sharks and large teleost fishes in the northeast Gulf of Mexico

被引:5
作者
Peterson, Cheston T. [1 ]
Grubbs, R. Dean [2 ]
机构
[1] Florida State Univ, Tallahassee, FL 32306 USA
[2] Florida State Univ, Coastal & Marine Lab, St Teresa, FL 32358 USA
关键词
community ecology; marine fishes; migration; seasonality; JUVENILE RED DRUM; MYCTEROPERCA-MICROLEPIS; SITE FIDELITY; HABITAT USE; DYNAMICS; BEHAVIOR; FLORIDA; AGE; ELASMOBRANCHS; TEMPERATURE;
D O I
10.1139/cjfas-2022-0124
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
We conducted monthly fishery-independent sampling using scientific gillnets and longlines at two seagrass shoals and surrounding soft-bottom habitat in the northeast Gulf of Mexico. Using non-metric multidimensional scaling, we explored the effects of abiotic variables on temporal patterns of fish community structure, analyzed temporal patterns using permutational multivariate analysis of variance, and tested for cyclicity in community structure. Additionally, we used generalized additive models to explore the effects of environmental variables on immigration and emigration phases of dominant taxa. We found strong seasonality and cyclicity in assemblages captured by both gear types, with depauperate winter communities and diverse assemblages in warmer month. Our results suggest that temperature may determine the timing of immigration and duration of the residency period of dominant taxa, but photoperiod may cue immigration and emigration in adults when the purpose of those migrations includes predicable reproductive functions (e.g., parturition). We found evidence of partial migration in juvenile life stages of some coastal sharks and hypothesize that rising temperatures due to climate change may have variable effects on residency patterns over ontogeny.
引用
收藏
页码:1335 / 1350
页数:16
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