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首页> 外文期刊>Ocean & coastal management >Changes in trophic ecology of fish assemblages after no take Marine Protected Area designation in the southwestern coast of Portugal
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Changes in trophic ecology of fish assemblages after no take Marine Protected Area designation in the southwestern coast of Portugal

机译：葡萄牙西南沿海无保护区指定后鱼群营养生态的变化

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摘要

Changes in fish assemblage structure caused by human activities, such as fishing, can alter trophic relations in fish assemblages. In this context, Marine Protected Areas (MPA) are efficient tools for habitat recovery and ideal environments for evaluating changes on the trophic structure resulting from human activities. The present work targeted fish assemblages from two no-take MPAs from the northern half of South Alentejo and Costa Vicentina Marine Park, established in 2011. Previous works reported positive effects on local fish assemblages after no-take MPA designation, and it is therefore important to further study its impact on local fish assemblages, especially concerning trophic interactions. Local fish assemblages were sampled (summer 2011, winter 2012, summer 2013 and winter 2013) using trammel nets. Diets were characterized and digestive tract contents of the 10 most abundant fish species were compared between the no take MPAs (treatment) and adjacent areas (controls), and changes evaluated as a function of time since protection. Results revealed significant differences between the diets of fish from protected and non protected areas, with crabs being the preferential prey in both protected and control areas but being more ingested outside the no-take areas. However, these differences were evident since the beginning of the study. Fish assemblages from the northern area presented significantly larger niche breadth and. significantly increasing with time. This way, the main effects of no-take MPA implementation were directly visible on the niche breadth but did not directly impact the diet composition of the sampled fish assemblages, contributing however to reinforce the already naturally existent differences. This work provides important information regarding the effect of changes in the fish assemblage caused by MPA designation on the trophic ecology of fish. (C) 2016 Elsevier Ltd. All rights reserved.
机译：由人类活动（例如捕鱼）引起的鱼群结构的变化会改变鱼群的营养关系。在这种情况下，海洋保护区（MPA）是用于栖息地恢复的理想工具，也是评估人类活动造成的营养结构变化的理想环境。本工作的目标是2011年建立的，来自南阿连特茹北半部和哥斯达黎加维森蒂纳海洋公园的两个无捕捞MPA的鱼类组合。以前的工作报告说，指定无捕捞MPA对当地鱼类组合有积极影响，因此，这一点很重要进一步研究其对当地鱼类种群的影响，特别是在营养相互作用方面。使用tram虫网对当地鱼群（2011年夏季，2012年冬季，2013年夏季和2013年冬季）进行了采样。对日粮进行了表征，并比较了禁食MPA（处理）和邻近区域（对照）之间10种最丰富鱼类的消化道含量，并根据保护以来的时间对变化进行了评估。结果显示，保护区和非保护区的鱼类饮食之间存在显着差异，螃蟹是保护区和控制区的首选猎物，但在禁食区以外的地方则更多地被捕食。然而，自研究开始以来，这些差异是显而易见的。来自北部地区的鱼群的生态位宽度明显更大。随着时间的推移显着增加。这样一来，不采取MPA措施的主要作用就可以在利基宽度上直接看到，但并没有直接影响所取样鱼群的饮食结构，但是有助于加强已经自然存在的差异。这项工作提供了有关MPA指定引起的鱼类组合变化对鱼类营养生态的影响的重要信息。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ocean & coastal management》 |2017年第3期|144-153|共10页
  • 作者

    Pereira Tadeu Jose; Manique Joana; Quintella Bernardo Ruivo; Castro Nuno; de Almeida Pedro Raposo; Costa Jose Lino;

  • 作者单位

    Univ Evora, MARE Ctr Ciencias Mar & Ambiente, Dept Biol, Escola Ciencias & Tecnol, P-7004516 Evora, Portugal;

    Univ Lisbon, MARE Ctr Ciencias Mar & Ambiente, Fac Ciencias, P-1749016 Lisbon, Portugal;

    Univ Evora, MARE Ctr Ciencias Mar & Ambiente, Dept Biol, Escola Ciencias & Tecnol, P-7004516 Evora, Portugal;

    Univ Lisbon, MARE Ctr Ciencias Mar & Ambiente, Fac Ciencias, P-1749016 Lisbon, Portugal;

    Univ Evora, MARE Ctr Ciencias Mar & Ambiente, Dept Biol, Escola Ciencias & Tecnol, P-7004516 Evora, Portugal;

    Univ Lisbon, MARE Ctr Ciencias Mar & Ambiente, Fac Ciencias, P-1749016 Lisbon, Portugal;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    MPA impact; Fish diet; Niche breadth; No take zone; PNSACV marine park;

    机译：MPA影响;鱼类饮食;利基宽度;禁止进入区域;PNSACV海洋公园;

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