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首页> 外文期刊>Environmental toxicology and chemistry >TAXONOMIC LEVEL SUFFICIENT FOR ASSESSING POLLUTION IMPACTS ON THE SOUTHERN CALIFORNIA BIGHT MACROBENTHOS - REVISITED
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TAXONOMIC LEVEL SUFFICIENT FOR ASSESSING POLLUTION IMPACTS ON THE SOUTHERN CALIFORNIA BIGHT MACROBENTHOS - REVISITED

机译：评估污染对南加州湾宏的影响的分类学水平充分-重新审查

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摘要

Taxonomic sufficiency is the pragmatic concept of identifying organisms only to the taxonomic level necessary and sufficient to meet a study's objectives. Sufficient taxonomy was determined for detecting differences in macrobenthic taxa richness, a dominance index, and three diversity indices between a reference and two pollution-impacted stations in the Southern California Bight using a wide variety of sampling protocols. A higher taxonomic level was deemed sufficient for a given measure and sampling protocol if the statistical power of t tests performed on data grouped to it was essentially the same as that when tests were performed on data grouped to all lower taxa. The sufficient taxon for the optimum sampling protocol was phylum except when assessing biological stimulation based on differences in mean log_(10)(number of taxa) where it was species. Generic dominance and diversity indices were sufficient independent of the sample units tested (0.02, 0.06, and 0.1 m~2) and sample size (n ≥ 2). We recommend family-level identification of specimens collected using the optimum sampling protocol when assessing macrobenthic community impacts in the study area because familial analyses are very likely to be sufficient. Confounding effects of sampling variables need to be accounted for when determining the true cost efficiency of and the underlying reason(s) for the sufficiency of higher taxonomy.
机译：分类学上的充分性是一种实用的概念，仅在满足研究目标所必需和足够的分类学水平上鉴定生物。确定了足够的分类法，以使用多种采样方案来检测南加州湾参考站和两个受污染影响站之间的大型底栖生物分类丰富度，优势度指数和三个多样性指数。如果对分组数据进行的t检验的统计功效与对所有较低分类群的数据进行检验的统计学功效基本相同，则对于给定的度量标准和抽样方案，较高的分类标准就足够了。除了基于物种的平均log_（10）（分类单元数）的差异评估生物刺激时，用于最佳采样方案的足够分类单元是门。通用优势度和多样性指数足以独立于所测试的样本单位（0.02、0.06和0.1 m〜2）和样本大小（n≥2）。我们建议在评估研究区域的大型底栖动物群落影响时，使用最佳采样方案对样本进行家庭级别的鉴定，因为家庭分析很可能就足够了。在确定较高分类法的真实成本效率及其基本原因时，必须考虑采样变量的混杂影响。

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