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A knowledge platform to inform on the effects of trawling on benthic communities

机译：一个知识平台，向您介绍拖网对底栖生物的影响

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For a successful implementation of an Ecosystem Approach to Fisheries (EAF) management, it is necessary that all stakeholders involved in fisheries management are aware of the implications of fishing impacts on ecosystems and agree with the adopted measures to mitigate these impacts. In this context, there is a need for tools to share knowledge on the ecosystem effects of fisheries among these stakeholders. When managing bottom trawl fisheries under an EAF framework, one of the main concerns is the direct and indirect consequences of trawling impacts on benthic ecosystems. We developed a platform using the ExtendSim (R) software with a user-friendly interface that combines a simulation model based on existing knowledge, data collection and representation of predicted trawling impacts on the seabed. The platform aims to be a deliberation support tool for fisheries' stakeholders and, simultaneously, raise public awareness of the need for good benthic community knowledge to appropriately inform EAF management plans. The simulation procedure assumes that trawling affects benthic communities with an intensity that depends on the level of fishing effort exerted on benthic communities and on the habitat characteristics (i.e. sediment grain size). Data to build the simulation comes from epifaunal samples from 18 study sites located in Mediterranean continental shelves subjected to different levels of fishing effort. In this work, we present the simulation outputs of a 50% fishing effort increase (and decrease) in four of the study sites which cover different habitats and different levels of fishing effort. We discuss the platform strengths and weaknesses and potential future developments. (C) 2017 Elsevier Ltd. All rights reserved.
机译：为了成功实施渔业生态系统方法（EAF）管理，有必要使所有参与渔业管理的利益相关者都意识到捕捞对生态系统的影响，并同意采取减轻​​这些影响的措施。在这种情况下，需要在这些利益相关者之间分享有关渔业对生态系统影响的知识的工具。在渔业生态系统方法框架下管理拖网渔业时，主要关注的问题之一是拖网对底栖生态系统的直接和间接后果。我们使用ExtendSim（R）软件开发了一个平台，该平台具有易于使用的界面，该界面结合了基于现有知识，数据收集和对拖网的预期拖网影响表示形式的模拟模型。该平台旨在成为渔业利益相关者的审议支持工具，并同时提高公众对底层渔业社区知识的必要性的认识，以适当地为渔业生态系统方法管理计划提供依据。模拟程序假定拖网对底栖生物群落的影响强度取决于对底栖生物群落施加的捕捞努力水平和栖息地特征（即沉积物粒度）。建立模拟的数据来自来自地中海大陆架上18个研究地点的埃法费纳样本，这些研究地点遭受了不同程度的捕捞努力。在这项工作中，我们介绍了四个研究地点（覆盖不同的栖息地和不同程度的捕捞努力）增加（和减少）了50％捕捞努力的模拟输出。我们讨论了平台的优缺点和潜在的未来发展。 （C）2017 Elsevier Ltd.保留所有权利。

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