MODELING CLIMATE AND VEGETATIONAL CHANGE SINCE THE LAST GLACIAL MAXIMUM USING STABLE ISOTOPES AND DIGITAL ANALYSIS Pennilyn Higgins Florida Museum of Natural.

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Presentation transcript:

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

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

Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications

Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications

Data generation

One tooth; how many data points?

Database

Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications

Plotting isotopic values against geographical information

Localities sampled

Stacked plots

Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications

Database query

Plot and contour the data

Change your data and color scheme.

Look at a specific part of the fauna

…and compare with other species

Liven it up with color

…and get a closer look

Outline An overabundance of data Geographical data Using the computer to sort it out Visualizing large data sets Making it look nice Real applications

Exporting to other formats

Initial diagrams can be pretty ugly…

…but are easy enough to sharpen with other software

Plotting oxygen and carbon

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

Full Glacial + Glacial Carbon

FG + G Bison and Camelops

FG + G Equus

Full Glacial + Glacial Carbon

Late Glacial Carbon

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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