Complementarity and sensitivity of benthic state indicators to bottom‐trawl fishing disturbance

IF 4.3 2区 环境科学与生态学 Q1 ECOLOGY
P. Daniël van Denderen, Maider Plaza‐Morlote, Sandrine Vaz, Sander Wijnhoven, Angel Borja, Ulla Fernandez‐Arcaya, José M. González‐Irusta, Jørgen L. S. Hansen, Nikolaos Katsiaras, Andrea Pierucci, Alberto Serrano, Sofia Reizopoulou, Nadia Papadopoulou, Mattias Sköld, Christopher J. Smith, Henrik Nygård, Gert Van Hoey, Grete E. Dinesen, Elina A. Virtanen, Aurélien Boyé, Ana García‐Alegre, Juan Bellas, Stefan Bolam, Pablo Durán Muñoz, Mar Sacau, Giada Riva, Ellen Kenchington, Saša Raicevich, David Reid, Marie Julie Roux, Jan Geert Hiddink, Sebastian Valanko
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引用次数: 0

Abstract

Many indicators have been developed to assess the state of benthic communities and identify seabed habitats most at risk from bottom trawling disturbance. However, the large variety of indicators and their development and application under specific geographic areas and management contexts has made it difficult to evaluate their wider utility. We compared the complementarity/uniqueness, sensitivity, and selectivity of 18 benthic indicators to pressure of bottom trawling. Seventeen common datasets with broad regional representation covering a range of pressure gradients from bottom trawling disturbance (n = 14), eutrophication (n = 1), marine pollution (n = 1), and oxygen depletion (n = 1) were used for the comparison. The outcomes of most indicators were correlated to a certain extent with response to bottom trawling disturbance, and two complementary groups of indicators were identified: diversity‐based and biological trait‐based indicators. Trait‐based indicators that quantify the changes in relative abundance of sensitive taxa were most effective in identifying benthic community change in response to bottom trawling disturbance. None of the indicators responded to the trawling pressure gradient in all datasets, and some showed a response that were opposed to the theoretical expectation for some gradients. Indicators that showed clear responses to bottom trawling disturbance also showed clear responses in at least one other pressure gradient, suggesting those indicators are not pressure specific. These results emphasize the importance of selecting several indicators, at least one from each group (diversity and trait‐based), to capture the broader signals of change in benthic communities due to bottom trawling activities. Our systematic approach offers the basis from which scientific advisors and/or managers can select suitable combinations of indicators to arrive at a sensitive and comprehensive benthic status assessment.
底栖状态指标的互补性和对底拖网捕捞干扰的敏感性
为评估底栖生物群落状况和确定受底拖网捕捞干扰风险最大的海底生境,已制定了许多指标。然而,由于指标种类繁多,而且是在特定的地理区域和管理环境下开发和应用的,因此很难对其更广泛的效用进行评估。我们比较了 18 种底栖指标对底拖网捕捞压力的互补性/独特性、敏感性和选择性。比较使用了 17 个具有广泛区域代表性的通用数据集,涵盖了底拖网捕捞干扰(14 个)、富营养化(1 个)、海洋污染(1 个)和氧气耗尽(1 个)等一系列压力梯度。大多数指标的结果与底拖网扰动反应有一定程度的相关性,并确定了两类互补指标:基于多样性的指标和基于生物性状的指标。基于性状的指标可量化敏感类群相对丰度的变化,在识别底拖网扰动引起的底栖群落变化方面最为有效。在所有数据集中,没有一个指标对拖网压力梯度做出反应,有些指标的反应与某些梯度的理论预期相反。对底层拖网捕捞干扰有明显反应的指标,在至少另一种压力梯度中也有明显反应,这表明这些指标并不具有压力特异性。这些结果强调了选择多个指标的重要性,至少每组(多样性和基于性状的指标)选择一个,以捕捉底拖网活动导致底栖生物群落变化的更广泛信号。我们的系统方法提供了一个基础,科学顾问和/或管理人员可据此选择合适的指标组合,以进行敏感而全面的海底状况评估。
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来源期刊
Ecological Applications
Ecological Applications 环境科学-环境科学
CiteScore
9.50
自引率
2.00%
发文量
268
审稿时长
6 months
期刊介绍: The pages of Ecological Applications are open to research and discussion papers that integrate ecological science and concepts with their application and implications. Of special interest are papers that develop the basic scientific principles on which environmental decision-making should rest, and those that discuss the application of ecological concepts to environmental problem solving, policy, and management. Papers that deal explicitly with policy matters are welcome. Interdisciplinary approaches are encouraged, as are short communications on emerging environmental challenges.
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