Environmental controls of diatom species in northeast Pacific sediments | - CCMAR -

Journal Article

TitleEnvironmental controls of diatom species in northeast Pacific sediments
Publication TypeJournal Article
AuthorsLopes, C, Mix, AC, Abrantes, F
Year of Publication2010
JournalPalaeogeography, Palaeoclimatology, Palaeoecology
Volume297
Issue1
Date PublishedJan-11-2010
Pagination188 - 200
ISSN00310182
KeywordsDiatoms; Modern calibrations; Environmental variables; Canonical Correspondence Analysis
Abstract

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%).

URLhttp://linkinghub.elsevier.com/retrieve/pii/S0031018210004633http://api.elsevier.com/content/article/PII:S0031018210004633?httpAccept=text/xmlhttp://api.elsevier.com/content/article/PII:S0031018210004633?httpAccept=text/plain
DOI10.1016/j.palaeo.2010.07.029
Short TitlePalaeogeography, Palaeoclimatology, Palaeoecology
CCMAR Authors