کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4467514 1314080 2010 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Environmental controls of diatom species in northeast Pacific sediments
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Environmental controls of diatom species in northeast Pacific sediments
چکیده انگلیسی

Non-linear, unimodal techniques are suitable for estimation of environmental properties in the northeast (NE) Pacific based on fossil diatom taxa (species and/or species groups) found in modern (core-top) sediments. Canonical Correspondence Analysis (CCA), a constrained ordination technique, discerned best-fit relationships among two multivariate datasets (the floral and the environmental) and thus yielded insight into the environmental variables that best explain the species variance within diatom populations. Based on these insights, we developed predictive functions for annual Primary Productivity (PP) and seasonal range of sea Sea-Surface Temperature using unimodal models and cross validation techniques. Estimates of annual PP (r2jack = 0.92; RMSEP = 91.94 gC/m2/y) explained the highest percentage of variance in the core-top diatom record (22.1%).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 297, Issue 1, 1 November 2010, Pages 188–200
نویسندگان
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