BENTHIC FORAMINIFERAL MORPHOGROUPS ON THE ARGENTINE CONTINENTAL SHELF
BENTHIC FORAMINIFERAL MORPHOGROUPS ON THE ARGENTINE CONTINENTAL SHELF
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阿根廷大陆架的底栖有孔虫形态类群
DOI：
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发表时间：
2011
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通讯作者：
E. Bernasconi
中科院分区：
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作者：
Marta Alperin;G. Cusminsky;E. Bernasconi
本研究的目的是评估非生物因素对阿根廷大陆架~40°S环境中最近底栖有孔虫形态群的关联和空间分布的相对影响，作为确定其古生态学意义的第一步。有孔虫分为五个形态群：锥形，细长扁平，milioline，planoconvular和rounded-planispiral。成分数据分析技术被用来定义形态群组合，分类和回归树分析被用来识别环境变量。形态群组合的分布被认为是由环境因素之间复杂的相互作用驱动的。最重要的因素是温度，虽然盐度，衬底粒度和水动力能量也与形态群的分布。形态群分析表明，有可能确定目前和过去的环境中的物种的自生态是未知的，或有疑问，他们的分类。
The aim of this study is to evaluate the relative influence of abiotic factors on the association and spatial distribution of recent benthic foraminiferal morphogroups in the Argentine continental shelf at ~40°S environments as a first step towards establishing their paleoecological significance. Foraminifera are classified into five morphogroups: tapered, elongate-flattened, milioline, planoconvex, and rounded-planispiral. Compositional data analysis techniques were used to define morphogroup assemblages, and Classification and Regression Tree Analysis was used to identify environmental variables. The distribution of the morphogroup assemblages were recognized was driven by complex interactions between environmental factors. The most important factor is temperature, although salinity, substrate grain size, and hydrodynamic energy also correlate with the distribution of morphogroups. The morphogroups analysis shows potential for determining present and past environments where the auto-ecology of the species is unknown or where there is doubt regarding their taxonomic classification.