Tags

Type your tag names separated by a space and hit enter

The impact of Cenozoic cooling on assemblage diversity in planktonic foraminifera.
Philos Trans R Soc Lond B Biol Sci. 2016 Apr 05; 371(1691):20150224.PT

Abstract

The Cenozoic planktonic foraminifera (PF) (calcareous zooplankton) have arguably the most detailed fossil record of any group. The quality of this record allows models of environmental controls on macroecology, developed for Recent assemblages, to be tested on intervals with profoundly different climatic conditions. These analyses shed light on the role of long-term global cooling in establishing the modern latitudinal diversity gradient (LDG)--one of the most powerful generalizations in biogeography and macroecology. Here, we test the transferability of environment-diversity models developed for modern PF assemblages to the Eocene epoch (approx. 56-34 Ma), a time of pronounced global warmth. Environmental variables from global climate models are combined with Recent environment-diversity models to predict Eocene richness gradients, which are then compared with observed patterns. The results indicate the modern LDG--lower richness towards the poles--developed through the Eocene. Three possible causes are suggested for the mismatch between statistical model predictions and data in the Early Eocene: the environmental estimates are inaccurate, the statistical model misses a relevant variable, or the intercorrelations among facets of diversity--e.g. richness, evenness, functional diversity--have changed over geological time. By the Late Eocene, environment-diversity relationships were much more similar to those found today.

Authors+Show Affiliations

Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot SL5 7PY, UK isabel.fenton@nhm.ac.uk.School of Earth and Ocean Sciences, Cardiff University, Cardiff CF10 3AT, UK.School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.School of Geographical Sciences and Cabot Institute, University of Bristol, Bristol BS8 1SS, UK.School of Geographical Sciences and Cabot Institute, University of Bristol, Bristol BS8 1SS, UK.Getech Group plc. Elmete Hall, Elmete Lane, Leeds LS8 2LJ, UK.Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot SL5 7PY, UK.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26977064

Citation

Fenton, Isabel S., et al. "The Impact of Cenozoic Cooling On Assemblage Diversity in Planktonic Foraminifera." Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, vol. 371, no. 1691, 2016, p. 20150224.
Fenton IS, Pearson PN, Dunkley Jones T, et al. The impact of Cenozoic cooling on assemblage diversity in planktonic foraminifera. Philos Trans R Soc Lond B Biol Sci. 2016;371(1691):20150224.
Fenton, I. S., Pearson, P. N., Dunkley Jones, T., Farnsworth, A., Lunt, D. J., Markwick, P., & Purvis, A. (2016). The impact of Cenozoic cooling on assemblage diversity in planktonic foraminifera. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 371(1691), 20150224. https://doi.org/10.1098/rstb.2015.0224
Fenton IS, et al. The Impact of Cenozoic Cooling On Assemblage Diversity in Planktonic Foraminifera. Philos Trans R Soc Lond B Biol Sci. 2016 Apr 5;371(1691):20150224. PubMed PMID: 26977064.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The impact of Cenozoic cooling on assemblage diversity in planktonic foraminifera. AU - Fenton,Isabel S, AU - Pearson,Paul N, AU - Dunkley Jones,Tom, AU - Farnsworth,Alexander, AU - Lunt,Daniel J, AU - Markwick,Paul, AU - Purvis,Andy, PY - 2016/3/16/entrez PY - 2016/3/16/pubmed PY - 2016/12/20/medline KW - Eocene KW - global climate model KW - latitudinal diversity gradient KW - planktonic foraminifera SP - 20150224 EP - 20150224 JF - Philosophical transactions of the Royal Society of London. Series B, Biological sciences JO - Philos Trans R Soc Lond B Biol Sci VL - 371 IS - 1691 N2 - The Cenozoic planktonic foraminifera (PF) (calcareous zooplankton) have arguably the most detailed fossil record of any group. The quality of this record allows models of environmental controls on macroecology, developed for Recent assemblages, to be tested on intervals with profoundly different climatic conditions. These analyses shed light on the role of long-term global cooling in establishing the modern latitudinal diversity gradient (LDG)--one of the most powerful generalizations in biogeography and macroecology. Here, we test the transferability of environment-diversity models developed for modern PF assemblages to the Eocene epoch (approx. 56-34 Ma), a time of pronounced global warmth. Environmental variables from global climate models are combined with Recent environment-diversity models to predict Eocene richness gradients, which are then compared with observed patterns. The results indicate the modern LDG--lower richness towards the poles--developed through the Eocene. Three possible causes are suggested for the mismatch between statistical model predictions and data in the Early Eocene: the environmental estimates are inaccurate, the statistical model misses a relevant variable, or the intercorrelations among facets of diversity--e.g. richness, evenness, functional diversity--have changed over geological time. By the Late Eocene, environment-diversity relationships were much more similar to those found today. SN - 1471-2970 UR - https://www.unboundmedicine.com/medline/citation/26977064/The_impact_of_Cenozoic_cooling_on_assemblage_diversity_in_planktonic_foraminifera_ L2 - https://royalsocietypublishing.org/doi/10.1098/rstb.2015.0224?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -