Diversity of calanoid copepods in the North Atlantic and adjacent seas:: species associations and biogeography
Diversity of calanoid copepods in the North Atlantic and adjacent seas:: species associations and biogeography
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DOI：
10.3354/meps232179
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发表时间：
2002-01-01
影响因子：
2.5
通讯作者：
Reid, PC
中科院分区：
文献类型：
--
作者：
Beaugrand, G;Ibañez, F;Reid, PC
目前远洋生物多样性的格局是许多因素在不同规模上相互作用的结果，因此，了解调节海洋生态系统多样性的过程是具有挑战性的。在这项研究中，利用最新的“指示值法”和多元分析方法，将甲鱼类桡足动物的多样性分解为物种群丛。首次在大洋盆地尺度和接近中尺度的空间分辨率下，确定了甲壳类桡足动物的物种组合。确定了9个物种关联，使我们能够(1)改善该区域的生态分区，(2)确定调节该区域中上层生物多样性的主要因素。结果表明，温度、水动力、层化和环境的季节变化可能是导致甲壳类桡足动物多样性生态调节的主要因素，海流/水团和物种群间相似的地理格局表明，物种群可以作为环境指标来评估与气候变化和其他日益严重的人为影响有关的海洋环境的长期变化。
Present-day patterns in pelagic biodiversity are the result of the interaction of many factors acting at different scales, Developing an understanding of the processes that regulate the diversity of oceanic ecosystems is thus challenging. In this study, diversity of calanoid copepods was decomposed into species associations by means of the recent 'indicator value method' and multivariate analyses. For the first time, at an oceanic basin scale and with a spatial resolution approaching the mesoscale, species associations of calanoid copepods have been identified. Nine species associations were determined and have enabled us, (1) to improve the ecological partitioning of this region, and (2) to identify the main factors that regulate pelagic biodiversity in this area. It is shown that temperature, hydrodynamics, stratification and seasonal variability of the environment are likely to be the main factors contributing to the ecological regulation of diversity of calanoid copepods, The similar geographical pattern evident between currents/water masses and the species associations suggest that the species groups may be used as an environmental indicator to evaluate long-term changes in the marine environment related to climate change and other increasing human-induced influences.