NDLI: Early Eocene plant diversity and dynamics in the Falkland flora, Okanagan Highlands, British Columbia, Canada

Content Provider	Springer Nature Link
Author	Smith, Robin Y. Basinger, James F. Greenwood, David R.
Copyright Year	2011
Abstract	The early Eocene fossil localities of the Okanagan Highlands in British Columbia, Canada, and Washington State, USA, span the Early Eocene Climatic Optimum, the warmest period of the Cenozoic, and reflect mild but equable upland climates (mean annual temperature <15°C, cold month mean temperature >0°C). The Okanagan Highlands region has been identified as a centre of temperate plant family diversification in the northern hemisphere during the early Eocene. Here, we test the hypothesis of mid-latitude high diversity through rarefaction analysis of unbiased census collections from the Okanagan Highlands Falkland fossil locality, demonstrating levels of diversity similar to those documented at hyperdiverse Eocene sites in South America when adjusted for sample size. An explanation for this diversity may lie in the upland character of the Falkland site, as altitudinal gradients provide a mosaic of microhabitats through interacting effects of topography and climate. Fine-scale trends are also examined within the Falkland site, demonstrating a shift in plant community composition over time to a more diverse flora, although the dominant taxa persist through the section in varying levels of abundance. Intra-site patterns in plant community structure and composition are attributed to a combination of environmental factors, including disturbance and microhabitat diversity.
Starting Page	309
Ending Page	328
Page Count	20
File Format	PDF
ISSN	18671594
Journal	Palaeobiodiversity and Palaeoenvironments
Volume Number	92
Issue Number	3
e-ISSN	18671608
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-10-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fossil flora Okanagan Highlands British Columbia Early Eocene Climatic Optimum Diversity Rarefaction Biodiversity Freshwater & Marine Ecology Animal Systematics/Taxonomy/Biogeography Plant Systematics/Taxonomy/Biogeography Paleontology
Content Type	Text
Resource Type	Article
Subject	Ecology Geology Ecology, Evolution, Behavior and Systematics Global and Planetary Change Paleontology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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