期刊
QUATERNARY SCIENCE REVIEWS
卷 91, 期 -, 页码 62-69出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.quascirev.2014.03.006
关键词
Palaeoecology; Bioindication; Transfer function; Taxonomy; Testate amoebae; Quantitative ecology; Peatland
资金
- Swiss NSF [205321-109709/1, 205321-109709/2]
- Scientific 82 Technological Cooperation Programme Switzerland Russia faculty exchange project
- Science and Technology Cooperation Program Switzerland Russia [IZLR Z3_128338]
- Impact Fellowship from the University of Stirling
- Russian Federation [MD-4435.2014.4]
- Russian Foundation for Basic Research [13-04-00542]
- Switzerland through the Swiss Contribution [PSPB-013/2010]
Sound taxonomy is a major requirement for quantitative environmental reconstruction using biological data. Transfer function performance should theoretically be expected to decrease with reduced taxonomic resolution. However for many groups of organisms taxonomy is imperfect and species level identification not always possible. We conducted numerical experiments on five testate amoeba water table (DWT) transfer function data sets. We sequentially reduced the number of taxonomic groups by successively merging morphologically similar species and removing inconspicuous species. We then assessed how these changes affected model performance and palaeoenvironmental reconstruction using two fossil data sets. Model performance decreased with decreasing taxonomic resolution, but this had only limited effects on patterns of inferred DWT, at least to detect major dry/wet shifts. Higher-resolution taxonomy may however still be useful to detect more subtle changes, or for reconstructed shifts to be significant. (C) 2014 Elsevier Ltd. All rights reserved.
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