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首页> 外文期刊>Marine Environmental Research >Relative and combined effects of habitat and fishing on reef fish communities across a limited fishing gradient at Ningaloo
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Relative and combined effects of habitat and fishing on reef fish communities across a limited fishing gradient at Ningaloo

机译:在Ningaloo有限的捕鱼坡度中,栖息地和捕鱼对珊瑚礁鱼类群落的相对和综合影响

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摘要

Habitat degradation and fishing are major drivers of temporal and spatial changes in fish communities. The independent effects of these drivers are well documented, but the relative importance and interaction between fishing and habitat shifts is poorly understood, particularly in complex systems such as coral reefs. To assess the combined and relative effects of fishing and habitat we examined the composition of fish communities on patch reefs across a gradient of high to low structural complexity in fished and unfished areas of the Ningaloo Marine Park, Western Australia. Biomass and species richness offish were positively correlated with structural complexity of reefs and negatively related to macroalgal cover. Total abundance of fish was also positively related to structural complexity, however this relationship was stronger on fished reefs than those where fishing is prohibited. The interaction between habitat condition and fishing pressure is primarily due to the high abundance of small bodied plank-tivorous fish on fished reefs. However, the influence of management zones on the abundance and biomass of predators and target species is small, implying spatial differences in fishing pressure are low and unlikely to be driving this interaction. Our results emphasise the importance of habitat in structuring reef fish communities on coral reefs especially when gradients in fishing pressure are low. The influence of fishing effort on this relationship may however become more important as fishing pressure increases.
机译:生境的退化和捕鱼是鱼类群落时空变化的主要驱动力。这些驱动因素的独立作用已得到充分证明,但对捕鱼和栖息地转移之间的相对重要性和相互作用的了解却很少,尤其是在诸如珊瑚礁之类的复杂系统中。为了评估捕鱼和栖息地的综合和相对影响,我们检查了西澳大利亚州Ningaloo海洋公园的可捕鱼和未捕鱼区域中从高到低的结构复杂度梯度上的小鱼礁组成的鱼类群落组成。鱼的生物量和物种丰富度与珊瑚礁的结构复杂度呈正相关,与大型藻类覆盖度呈负相关。鱼类的总丰度也与结构的复杂性成正比,但是与禁止捕鱼的珊瑚礁相比,这种关系在珊瑚礁上更强。栖息地条件和捕捞压力之间的相互作用主要是由于鱼礁上的小厚木板鱼为生的。但是,管理区对捕食者和目标物种的丰度和生物量的影响很小,这意味着捕捞压力的空间差异很低,不太可能推动这种相互作用。我们的研究结果强调了栖息地对于在珊瑚礁上构建礁鱼群落的重要性,尤其是在捕捞压力梯度较低时。但是,随着捕鱼压力的增加,捕捞努力对这种关系的影响可能变得更加重要。

著录项

  • 来源
    《Marine Environmental Research》 |2012年第10期|p.1-11|共11页
  • 作者单位

    Marine Science Program, Department of Environment and Conservation, Dick Perry Avenue, Kensington, Western Australia 6151, Australia,The Oceans Institute, University of Western Australia, Crawley, Western Australia 6009, Australia;

    Commonwealth Scientific and Industrial Research Organization, Marine and Atmospheric Research, Cleveland, Queensland 4163, Australia;

    Australian Institute of Marine Science, UWA Oceans Institute, Crawley, Western Australia 6009, Australia;

    Marine Science Program, Department of Environment and Conservation, Dick Perry Avenue, Kensington, Western Australia 6151, Australia,The Oceans Institute, University of Western Australia, Crawley, Western Australia 6009, Australia;

    Marine Science Program, Department of Environment and Conservation, Dick Perry Avenue, Kensington, Western Australia 6151, Australia;

    Commonwealth Scientific and Industrial Research Organization, Marine and Atmospheric Research, Wembley, Western Australia 6014, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    marine protected areas (MPA); fishery management; ecosystem disturbance; coral reef fish; benthic ecology; community composition; conservation; habitat;

    机译:海洋保护区(MPA);渔业管理;生态系统扰动;珊瑚鱼;底栖生态学社区组成;保护;栖息地;

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