The diversity of coral reefs: what are we missing?
The diversity of coral reefs: what are we missing?
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DOI：
10.1371/journal.pone.0025026
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Knowlton N
中科院分区：
文献类型：
--
作者：
Plaisance L;Caley MJ;Brainard RE;Knowlton N
热带珊瑚礁庇护着四分之一到三分之一的海洋物种，但构成珊瑚礁的三分之一的珊瑚物种现在面临灭绝的危险。由于评估珊瑚礁多样性的传统方法非常耗时，缺乏对许多群体的分类学专业知识，并且海洋生物被认为不太容易灭绝，大多数关于珊瑚礁保护的讨论都集中在维持生态系统服务而不是生物多样性的丧失上。在此研究中，我们基于定量采样和DNA条形码提供了新的生物多样性估计。我们关注的是甲壳类动物，它们是第二多样化的海洋后生动物。我们发现与珊瑚礁相关的甲壳类物种数量相对于采样努力（525个物种来自6.3 m2的全球分布样本面积）异常高。稀有物种的高流行率（38%只遇到过一次）、低空间重叠率（81%只在一个地方发现）和多样性的生物地理格局（印度-西太平洋b>中太平洋b>加勒比）与传统调查方法的结果一致，使该方法成为一种可靠和有效的生物多样性评估和监测方法。在一个很小的总面积内发现如此大量的物种表明，使用传统的调查方法对珊瑚礁多样性的探测严重不足，而且实际上被低估了。
Tropical reefs shelter one quarter to one third of all marine species but one third of the coral species that construct reefs are now at risk of extinction. Because traditional methods for assessing reef diversity are extremely time consuming, taxonomic expertise for many groups is lacking, and marine organisms are thought to be less vulnerable to extinction, most discussions of reef conservation focus on maintenance of ecosystem services rather than biodiversity loss. In this study involving the three major oceans with reef growth, we provide new biodiversity estimates based on quantitative sampling and DNA barcoding. We focus on crustaceans, which are the second most diverse group of marine metazoans. We show exceptionally high numbers of crustacean species associated with coral reefs relative to sampling effort (525 species from a combined, globally distributed sample area of 6.3 m2). The high prevalence of rare species (38% encountered only once), the low level of spatial overlap (81% found in only one locality) and the biogeographic patterns of diversity detected (Indo-West Pacific>Central Pacific>Caribbean) are consistent with results from traditional survey methods, making this approach a reliable and efficient method for assessing and monitoring biodiversity. The finding of such large numbers of species in a small total area suggests that coral reef diversity is seriously under-detected using traditional survey methods, and by implication, underestimated.
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DOI：
10.1098/rsbl.2003.0025
发表时间：
2003-08-07
影响因子：
4.7
作者：
Hebert, PDN;Ratnasingham, S;deWaard, JR
通讯作者：
deWaard, JR
影响因子：
4.8
作者：
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通讯作者：
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影响因子：
3.5
作者：
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通讯作者：
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影响因子：
64.8
作者：
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通讯作者：
Hughes, TP
影响因子：
56.9
作者：
Roberts, CM;McClean, CJ;Werner, TB
通讯作者：
Werner, TB