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MODELING CLIMATE AND VEGETATIONAL CHANGE SINCE THE LAST GLACIAL MAXIMUM USING STABLE ISOTOPES AND DIGITAL ANALYSIS Pennilyn Higgins Florida Museum of Natural History Gainesville, FL loligo@earth.rochester.edu
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Isotopes as environmental proxy C – Dietary proxy C3 vs C4 plants in herbivores C3 13 C lower than C4 13 C O – Climatic proxy 18 O increases with warmer temperatures 18 O decreases with high rainfall in warm weather
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications
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Data generation
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One tooth; how many data points?
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Database
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications
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Plotting isotopic values against geographical information
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Localities sampled
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Stacked plots
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications
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Database query
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Plot and contour the data
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Change your data and color scheme.
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Look at a specific part of the fauna
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…and compare with other species
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Liven it up with color
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…and get a closer look
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications
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Exporting to other formats
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Initial diagrams can be pretty ugly…
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…but are easy enough to sharpen with other software
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Plotting oxygen and carbon
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice A real applications
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Full Glacial + Glacial Carbon
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FG + G Bison and Camelops
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FG + G Equus
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Full Glacial + Glacial Carbon
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Late Glacial Carbon
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Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications
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