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Climate And Biodiversity Notes

Geography Notes > Earth System Dynamics (Physical Geography) Notes

This is an extract of our Climate And Biodiversity document, which we sell as part of our Earth System Dynamics (Physical Geography) Notes collection written by the top tier of Oxford University students.

The following is a more accessble plain text extract of the PDF sample above, taken from our Earth System Dynamics (Physical Geography) Notes. Due to the challenges of extracting text from PDFs, it will have odd formatting:

ESD: Evidence of the relationship between Climate and Biodiversity Notes discussing evidence for the relationship between climate and biodiversity, including looking at past climate changes and the role of models Contents:

1. Past Biodiversity Changes with Climate
? Pleistocene Climate Change
? Fossil Evidence of past Biodiversity

2. Refugia
? Pleistocene Refugia
? Impact on current biogeographical patterns

3. Researching Climate and Biodiversity
? Models
? Bioclimatic Envelope Modelling

1. Past Biodiversity changes with Climate Pleistocene Climate Change Climate change in the Pleistocene has driven biome and species range shifts, formation of refugia and range expansions In North America during the most recent deglaciation, mixed conifer trees moved North and boreal forests disappeared Relatively few taxa went extinct during Quaternary climate change (Botkin et al, 2007) - What does this mean for antrhopogenic climate change's impact on biodiversity???

Botkin et al 2007 - genetic and ecological processes protected many species Bush and Hooghiemsta, 2005 - only one tree species went extinct in North America Greatest extinctions were of large mammals in the Northern Hemisphere (MacPhee, 1999) and trees in Northern Europe (Svenning and Skov, 2004) Pleistocene megafauna extinction- extinction of large species during the Quaternary extinction.

Interesting Text- Warming of climate due to Birch expansion, originally due to humans? (Doughty et al ,2010)

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