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首页> 外文期刊>Marine ecology progress series >Bait increases the precision in count data from remote underwater video for most subtidal reef fish in the warm-temperate Agulhas bioregion
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Bait increases the precision in count data from remote underwater video for most subtidal reef fish in the warm-temperate Agulhas bioregion

机译：在温带的Agulhas生物区中，诱饵可提高来自远程水下视频的计数数据的准确性，这对于大多数潮下珊瑚礁鱼来说

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Baited remote underwater video (BRUV) has been identified in the literature as a powerful long-term monitoring tool for subtidal rocky reef fish communities. To test this, a repeated-measures field experiment comparing unbaited remote underwater video (RUV) with BRUV was conducted in the Tsitsikamma National Park Marine Protected Area between June 2008 and February 2010. The results demonstrate that BRUV was more efficient at surveying the entire fish community, specifically invertebrate carnivores, generalist carnivores and cartilaginous species. On the other hand, RUV was more effective at surveying microinvertebrate carnivores. High variability in the RUV data resulted in the method requiring a greater number of samples to achieve the same diagnostic power as BRUV. However, RUV required a shorter deployment and post-sampling video analysis time, making it more time efficient. Baited remote underwater video was more sensitive in the detection of differences in abundance between habitat types, while the RUV data were more prone to an intra-species methodological bias linked to the percentage of reef visible in the frame of view. The scale of the response to the presence of bait was inconsistent among species, indicating that behaviour determined the area surveyed within the bait plume of BRUV. The benefits gained by sampling the fish community with RUV do not outweigh those obtained by altering the community through the presence of bait. However, in combination, the 2 methods are highly effective at monitoring the subtidal fish communities in the Agulhas bioregion of South Africa.
机译：在文献中，诱饵远程水下视频（BRUV）已被认为是潮下带礁石鱼类群落的强大长期监视工具。为了对此进行测试，2008年6月至2010年2月之间，在齐齐卡马国家公园海洋保护区进行了重复测量的野外实验，将无诱饵的远程水下录像（RUV）与BRUV进行了比较。结果表明，BRUV可以更有效地调查整条鱼社区，特别是无脊椎动物，食肉动物和软骨动物。另一方面，RUV在调查无脊椎动物食肉动物方面更有效。 RUV数据的高度可变性导致该方法需要更多的样本才能实现与BRUV相同的诊断能力。但是，RUV需要更短的部署和后采样视频分析时间，从而使时间效率更高。带诱饵的远程水下录像在检测栖息地类型之间的丰度差异时更加敏感，而RUV数据则更倾向于物种内方法论偏差，这种偏差与视野中可见的礁石百分比有关。物种之间对诱饵存在的反应程度不一致，表明行为决定了BRUV诱饵羽流中的调查面积。用RUV对鱼类群落进行采样所获得的收益并不超过通过诱饵改变群落而获得的收益。但是，结合使用这两种方法可以非常有效地监测南非Agulhas生物区的潮间带鱼类群落。

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