Tammy Goodman Presentation

Information about Tammy Goodman Presentation

Published on January 3, 2008

Author: Sophia

Source: authorstream.com

Content

Locating and Assessing Populations of Scudderia septentrionalis in Western North Carolina:  Locating and Assessing Populations of Scudderia septentrionalis in Western North Carolina Tamara K. Goodman Department of Biology University of North Carolina, Asheville Why is conservation of biodiversity important?:  Why is conservation of biodiversity important? 6th Mass Extinction 20% or more species will disappear by 2020 10-100 million living organisms Only 1.4 million described Why should preservation of species be our responsibility?:  Why should preservation of species be our responsibility? Primary causes of species declines are Habitat destruction Pollution Introduction of exotic species Why study this species?:  Why study this species? S. septentrionalis listed as “significantly rare” in NC Estimated 21-100 extant populations Ecology:  Ecology Life-history is vague Only research conducted by IJ Cantrall, 1940’s, in Michigan Historical range map:  Historical range map TJ Walker, www.buzz.ifas.ufl.edu What is Scudderia septentrionalis?:  What is Scudderia septentrionalis? Ensifera Katydids and Crickets Tettigoniidae Katydids Phaneropterinae False Katydids Scudderia septentrionalis Northern Bush Katydids What type of research was conducted?:  What type of research was conducted? Populations located homing in on loud species-specific calls Transects driven or walked to count populations Males captured with black light Map of Western North Carolina:  Map of Western North Carolina What type of research was conducted?:  What type of research was conducted? Insects are poikilothermic Temperature variation studies used sound analysis software to measure rate changes Sonograms of male mating song:  16.4 °C 20kHz 5kHz 20kHz 5kHz 2 sec 2 sec Sonograms of male mating song 23.3 °C Ticks Buzzes Rate of Ticking as a Function of Temperature:  Rate of Ticking as a Function of Temperature Rate of Buzzing as a Function of Temperature:  Rate of Buzzing as a Function of Temperature In Summary:  In Summary Results 2 extant populations Historical sites unconfirmed Calling song studies Questions Is this species at edge of range or declining? Will our research aid in the preservation of this species? Save the katydids!! Acknowledgements:  Acknowledgements Research funded by US Forest Service T.G. Forrest T.J. Walker’s website, “www.buzz.ifas.ufl.edu” J.D. & J.R. Goodman

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