A biological survey method applied to seafloor massive sulphides (SMS) with contagiously distributed hydrothermal-vent fauna
A biological survey method applied to seafloor massive sulphides (SMS) with contagiously distributed hydrothermal-vent fauna
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DOI：
10.3354/meps09646
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发表时间：
2012-01-01
影响因子：
2.5
通讯作者：
Van Dover, C. L.
中科院分区：
文献类型：
--
作者：
Collins, P. C.;Kennedy, R.;Van Dover, C. L.
减少深海海底块状硫化物开采的战略包括建立适当的参照点，以便研究自然环境的变异性，并可作为幼虫的来源，以便在开采的热液区重新定居。在这项研究中，我们描述了马努斯盆地(巴布亚新几内亚俾斯麦海)的深海喷口群落，并使用一个拟议的参照点(南苏州)和一个拟议的矿场(索尔瓦拉1号)的大型动物数据集来检验这两个地点之间没有大型动物群落结构的假设。我们使用离散加权来调整分类群-丰度矩阵，以降低数量丰富的类群的传染性分布的贡献。由生物分类群确定的3种生境类型的区系组合(2只普罗旺斯螺属Alviniccha spp.和Ifremeria nautilei；以及固着藤壶Eochionlasimus ohtai)彼此不同，也不同于喷口外围组合，但不能与同一地点内或地点之间的土丘区分开来。南苏州的贻贝和管虫种群而不是索尔瓦拉1号的贻贝和管虫种群增加了拟议参考地点的分类学和栖息地多样性。
Strategies for mitigation of seafloor massive sulphide (SMS) extraction in the deep sea include establishment of suitable reference sites that allow for studies of natural environmental variability and that can serve as sources of larvae for re-colonisation of extracted hydrothermal fields. In this study, we characterize deep-sea vent communities in Manus Basin (Bismarck Sea, Papua New Guinea) and use macrofaunal data sets from a proposed reference site (South Su) and a proposed mine site (Solwara 1) to test the hypothesis that there was no difference in macrofaunal community structure between the sites. We used dispersion weighting to adjust taxa-abundance matrices to down-weight the contribution of contagious distributions of numerically abundant taxa. Faunal assemblages of 3 habitat types defined by biogenic taxa (2 provannid snails, Alviniconcha spp. and Ifremeria nautilei; and a sessile barnacle, Eochionelasmus ohtai) were distinct from one another and from the vent peripheral assemblage, but were not differentiable from mound-to-mound within a site or between sites. Mussel and tubeworm populations at South Su but not at Solwara 1 enhance the taxonomic and habitat diversity of the proposed reference site.