Increased signal of fishing pressure on community life-history traits at larger spatial scales

IF 6.3 1区环境科学与生态学 Q1 ECOLOGY Global Ecology and Biogeography Pub Date : 2024-02-17 DOI:10.1111/geb.13815

Caroline M. McKeon, Yvonne M. Buckley, Meadhbh Moriarty, Mathieu Lundy, Ruth Kelly

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Abstract

Aim

Human pressure in the oceans is pervasive and affects marine life. Understanding species' differing responses to human pressure, and how human pressure compares to other environmental variables in shaping marine communities is needed to facilitate the sustainable management of the seas. Despite theory and empirical evidence that fishing pressure affects marine life-history strategies, several recent large-scale studies have not shown strong relationships between fishing pressure and community composition. We aim to reconcile theory with data and explain these variable findings, testing the hypothesis that the signal of the effect of fishing pressure on marine communities depends on the scale at which the community is defined.

Location

North East Atlantic.

Time Period

2009 to 2021.

Major Taxa Studied

Marine vertebrates (Teleostei, Elasmobranchii, Petromyzonti, Holocephali).

Methods

We collate extensive scientific marine biodiversity surveys, published life-history traits and high-resolution annual fishing pressure data. Using frequentist Generalized Linear Mixed Models, we assess whether community mean weighted life-history traits correlate with fishing pressure, sea surface temperature and depth and whether the strength of these relationships are scale dependant.

Results

We show fish community life-history strategy correlates with fishing pressure, and the relative importance of fishing pressure compared to environmental variables increases with the scale at which a community is defined.

Main Conclusions

We suggest this scale dependence relates to the spatial extent over which covariates vary, and how fish movement moderates communities' experience of this variability. Our findings highlight the importance of explicit consideration of scale in ecological research, supporting the idea that studying systems at ecologically relevant scales is necessary to detect and appropriately interpret the effects of global change.

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在更大的空间尺度上，捕捞压力对群落生命史特征的信号增强

人类对海洋的压力无处不在，并影响着海洋生物。为了促进海洋的可持续管理，需要了解物种对人类压力的不同反应，以及人类压力与其他环境变量在塑造海洋生物群落方面的比较。尽管有理论和经验证据表明捕捞压力会影响海洋生物的生活史策略，但最近的几项大规模研究并未显示捕捞压力与群落组成之间存在密切关系。我们的目标是协调理论与数据之间的关系，并解释这些不同的研究结果，同时检验以下假设：捕捞压力对海洋群落的影响信号取决于定义群落的尺度。

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来源期刊

Global Ecology and Biogeography 环境科学-生态学

CiteScore

12.10

自引率

3.10%

发文量

170

审稿时长

3 months

期刊介绍： Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.