Future Evolutionary Flexibility and Biodiversity Future Evolutionary Flexibility
Future Evolutionary Flexibility and Biodiversity
Future Evolutionary Flexibility and Biodiversity Changing Climate Global Changes:
Future Evolutionary Flexibility and Biodiversity Changing Climate Global Changes:
Future Evolutionary Flexibility and Biodiversity Changing Climate Global Changes:
Future Evolutionary Flexibility and Biodiversity Changing Climate Global Changes:
Future Evolutionary Flexibility and Biodiversity Loss of Biodiversity
Future Evolutionary Flexibility and Biodiversity Loss of Biodiversity Mass Extinctions Humanian? ~TODAY! Cretaceous ~65 mya Triassic ~208 mya Permian ~245 mya Devonian ~360 mya Ordovician ~438 mya
Future Evolutionary Flexibility and Biodiversity
Future Evolutionary Flexibility and Biodiversity The Paper Disrupting evolutionary processes: The effect of habitat fragmentation on collared lizards in the Missouri Ozarks Alan R. Templeton, Robert J. Robertson, Jennifer Brisson, and Jared Strasburg
Future Evolutionary Flexibility and Biodiversity The Paper Disrupting evolutionary processes: The effect of habitat fragmentation on collared lizards in the Missouri Ozarks Alan R. Templeton, Robert J. Robertson, Jennifer Brisson, and Jared Strasburg
Future Evolutionary Flexibility and Biodiversity The Paper Disrupting evolutionary processes: The effect of habitat fragmentation on collared lizards in the Missouri Ozarks Alan R. Templeton, Robert J. Robertson, Jennifer Brisson, and Jared Strasburg
Future Evolutionary Flexibility and Biodiversity The Paper Disrupting evolutionary processes: The effect of habitat fragmentation on collared lizards in the Missouri Ozarks Alan R. Templeton, Robert J. Robertson, Jennifer Brisson, and Jared Strasburg
Future Evolutionary Flexibility and Biodiversity The Paper
Future Evolutionary Flexibility and Biodiversity The Paper Observations: • FST = 0. 40 for present population • Few individuals in each population • Populations only ~50 meters apart Possible Conclusion: • No / Reduced Gene Flow • Loss of genetic variability within individual subpopulations
Future Evolutionary Flexibility and Biodiversity The Paper How to Test: • Translocate and observe behavior of collared lizards in new environment. • Stegall Mountain Natural Area • Ecologically destroyed
Future Evolutionary Flexibility and Biodiversity The Paper
Future Evolutionary Flexibility and Biodiversity The Paper
Future Evolutionary Flexibility and Biodiversity The Paper How to Test: Time period Recaptured in glade other than glade of original capture Recaptured in glade of original capture 1984 -1993 0 9 63 Lizzards Marked on SM-7, SM-8, SM-9
Future Evolutionary Flexibility and Biodiversity The Paper Observations: • FST = 0. 40 for present population • Few individuals in each population • Populations only ~50 meters apart Possible Conclusion: • No / Reduced Gene Flow • Loss of genetic variability within individual subpopulations
Future Evolutionary Flexibility and Biodiversity The Paper A clear corridor from one population to the next Glade A Savanna Glade B Gene Flow Occurs Low FST No corridor from one population to the next Glade A Oak-Hickory Forest Crowded Understory Gene Flow Inhibited High FST =. 40 Glade B
Future Evolutionary Flexibility and Biodiversity The Paper
Future Evolutionary Flexibility and Biodiversity The Paper Before Burn After Burn
Future Evolutionary Flexibility and Biodiversity The Paper How to Test: Time period Recaptured in glade other than glade of original capture Recaptured in glade of original capture 1984 -1993 0 9 1994 -1994 9 9 63 Lizzards Marked on SM-7, SM-8, SM-9 Two-tailed Fisher’s Exact Test: P = 0. 012.
Future Evolutionary Flexibility and Biodiversity The Paper How to Test: Recaptured in glade other than glade of original capture Recaptured in glade of original capture Unburned 0 34 Burned 9 9 Area 39 Lizzards Marked Outside Burned Area 65 Lizzards Marked in Burn Area Two-tailed Fisher’s Exact Test: P < 0. 01.
Future Evolutionary Flexibility and Biodiversity The Paper
Future Evolutionary Flexibility and Biodiversity The Paper No corridor from one population to the next Glade A Oak-Hickory Forest Crowded Understory Gene Flow Inhibited High FST =. 40 Glade B
Future Evolutionary Flexibility and Biodiversity The Paper A clear corridor from one population to the next Glade A Savanna Glade B Gene Flow Occurs Low FST 10 x Original Population Size Better quality glades Some smaller glades used for sustenance
Future Evolutionary Flexibility and Biodiversity The Implications Humans can cause severe ecological damage Fragmentation of a habitat Reduction in genetic variability Speciation Extinction Need a favorable environment that provides plenty of ecological opportunities. Adaptive abilities precluded
Future Evolutionary Flexibility and Biodiversity The Implications Extinction Adaptive abilities precluded Why? Little variability puts populations at risk of pathogens and environmental changes Adaptations cannot spread though populations
Future Evolutionary Flexibility and Biodiversity The Implications Extinction Adaptive abilities precluded Victoria Glade Year 1950’s 1990’s Viable Population Extinct Population
Future Evolutionary Flexibility and Biodiversity The Implications Extinction Adaptive abilities precluded Extinction Ratchet
Future Evolutionary Flexibility and Biodiversity The Implications There is still hope… Future biodiversity can be saved! Processes that allow evolution and adaptations to occur must be maintained.
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