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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Comparing methodologies in marine habitat monitoring research: An assessment of species-habitat relationships as revealed by baited and unbaited remote underwater video systems
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Comparing methodologies in marine habitat monitoring research: An assessment of species-habitat relationships as revealed by baited and unbaited remote underwater video systems

机译：海洋栖息地监测研究中的方法比较：通过诱饵和未经诱饵的远程水下视频系统揭示的物种与栖息地的关系

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摘要

Remote underwater video systems (RUVS) are increasingly used in scientific studies to monitor marine ecosystems. RUVS can be deployed baited (BRUVS) or unbaited (UBRUVS) and allow for an estimation of the MaxN metric, a relative measure of species abundance. Recording species MaxN in a variety of marine habitats provides associations between species abundance and habitat type, known as 'species-habitat relationships'. However, the introduction of bait in BRUVS could obscure such relationships by inadvertently attracting fish from neighbouring habitats. Here, we investigate the species-habitat relationships of seven temperate marine species: Atlantic cod (Gadus morhua), right-eyed flatfish (Pleuronectinae spp.), Atlantic herring (Clupea harengus), whiting (Merlangius merlangus), goldsinny wrasse (Ctenolabrus rupestris), two-spotted goby (Gobiusculus fluvescens) and shore crab (Carcinus maenas) as revealed by BRUVS and UBRUVS. Video systems were deployed in coastal areas in the Western Baltic, with a cobble coverage ranging from 0% to 100%. Results show that all focal species responded to changes in cobble coverage, highlighting the importance of benthic habitat for a range of animals including benthopelagic species. Specifically, mean abundances of goldsinny wrasse and two-spotted goby were positively associated with cobble coverage, whilst right-eyed flatfish, herring, whiting and shore crab showed a negative association. Atlantic cod was found to be most abundant at intermediate cobble coverage between 65 and 70%, showing a unimodal trend with the mean abundance decreasing again at higher coverage. The relationships suggest that anthropogenic activities modifying benthic habitats, including extraction of material from the seabed and bottom trawling, likely change abundances of a range of marine species. Our comparative analysis suggests that both BRUVS and UBRUVS can identify previously documented species-habitat relationships. However, BRUVS demonstrated some superiority by confirming documented relationships for Atlantic cod and whiting, whilst UBRUVS failed to record any patterns for those species. Our data highlight the ability of BRUVS to identify changes in abundance across different habitats for a variety of species. Although the bait plume serves to attract organisms to the field of view, current results suggest that the use of BRUVS does not obscure species-habitat relationships in patchy coastal habitats. Therefore, future studies examining the importance of different marine areas may benefit from using BRUVS to quantify relationships between habitat variables and species abundance. Developing a better understanding of such relationships will be crucial in ensuring adequate management and protection of ecologically important marine habitats.
机译：远程水下视频系统（RUVS）在科学研究中越来越多地用于监视海洋生态系统。 RUVS可以部署为诱饵（BRUVS）或不诱饵（UBRUVS），并允许估算MaxN指标，MaxN指标是物种丰度的相对度量。记录各种海洋栖息地中的物种MaxN可以提供物种丰富度与栖息地类型之间的关联，这被称为“物种-栖息地关系”。但是，在BRUVS中引入诱饵可能会无意间吸引邻近生境的鱼类，从而掩盖这种关系。在这里，我们研究了七个温带海洋物种的物种-栖息地关系：大西洋鳕（Gadus morhua），右眼比目鱼（Pleuronectinae spp。），大西洋鲱鱼（Clupea harengus），白垩纪（Merlangius merlangus），goldsinny濑鱼（Ctenolabrus rupestris） ），BRUVS和UBRUVS揭示的两斑虾虎鱼（Gobiusculus fluvescens）和岸蟹（Carcinus maenas）。视频系统部署在波罗的海西部沿海地区，卵石覆盖范围从0％到100％。结果表明，所有焦点物种均对卵石覆盖度的变化做出了反应，突显了底栖生境对包括底栖上皮物种在内的一系列动物的重要性。具体而言，金鱼母濑鱼和两斑虾虎鱼的平均丰度与卵石覆盖率呈正相关，而右眼比目鱼，鲱鱼，白鳕和岸蟹则呈负相关。在中间卵石覆盖率介于65％和70％之间时，发现大西洋鳕鱼最丰富，显示出单峰趋势，在较高的覆盖率下平均丰度再次降低。这些关系表明，改变底栖生境的人为活动，包括从海底和拖网底拖网中提取物质，可能会改变一系列海洋物种的丰度。我们的比较分析表明，BRUVS和UBRUVS都可以识别以前记录的物种-栖息地关系。但是，BRUVS通过证实与大西洋鳕鱼和鳕鱼之间的关系已证明了其优越性，而UBRUVS未能记录这些物种的任何模式。我们的数据强调了BRUVS能够识别各种物种不同生境之间的丰度变化的能力。尽管诱饵羽流可以将生物吸引到视野中，但目前的结果表明，BRUVS的使用不会掩盖斑驳的沿海生境中的物种-栖息地关系。因此，未来的研究不同海洋区域重要性的研究可能会受益于使用BRUVS量化栖息地变量与物种丰富度之间的关系。更好地了解这种关系对于确保适当管理和保护具有生态重要性的海洋生境至关重要。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2020年第5期|151315.1-151315.11|共11页
  • 作者

  • 作者单位

    Tech Univ Denmark Sect Ecosyst Based Marine Management Kemitorvet Bldg 201 DK-2800 Lyngby Denmark|Univ Manchester Oxford Rd Manchester M13 9PL Lancs England;

    Tech Univ Denmark Sect Ecosyst Based Marine Management Kemitorvet Bldg 201 DK-2800 Lyngby Denmark;

    Tech Univ Denmark Sect Freshwater Fisheries Ecol Vejslovej 39 DK-8600 Silkeborg Denmark;

    Als Stenrev Rytterhaven 14 DK-6430 Nordborg Denmark;

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  • 正文语种 eng
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  • 关键词

    BRUVS; Rocky reef; Sand bottom; Unimodality; Baltic Sea; Gadus morhua;

    机译：BRUVS;礁石;沙底;单峰;波罗的海;du;

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