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Garden Club Scholarship
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Alysa Remsburg
Department of Zoology
University of Wisconsin-Madison
430 Lincoln Drive
Madison, WI 53706
email: remsburg@wisc.edu
I am a PhD dissertator at the University of Wisconsin-Madison. I grew
up near the forests and lakes of western Michigan, completed my
Bachelor's degree at Wittenberg University in Ohio, and my Master's
degree at UW- Madison. While my M.S. research on leaf litter
decomposition allowed me to explore ecosystem ecology in Yellowstone
National Park, it was my side project on leaf litter mites that reminded
me of a passion for animal responses to habitat alterations. Concern
for ecological changes occurring closer to my home led me to my current
dragonfly research, based at the Long-Term Ecological Research station
in northern Wisconsin.
As vegetation clearing accompanies shoreline development, more
information is needed about the consequences for wildlife. Promoting
wildlife habitat is stated as one reason for enactment of shoreline
vegetation buffer requirements, although few published studies support
this goal. Dragonflies and damselflies (order Odonata) may be among the
first organisms affected by habitat changes because they are excellent
dispersers, and generalist predators during both the aquatic larval
stage and aerial adult stage. Their complex life history and appeal to
both students and land owners inspire me to pursue a teaching and
research career involving odonates. Dependence of these predators on
vegetation is just one of the critical links that fascinates me about
ecology.
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Riparian zones are hotspots for both biodiversity and housing
development. I study how shoreline and aquatic vegetation influences
dragonfly and damselfly (order Odonata) community composition. My
current field experiment tests whether cattails and other wetland plants
affect odonate territoriality, diversity, and oviposition. Field
treatments consisting of potted plants will be rotated among four lawn
sites on at least 20 independent observation days so that cattail
effects on odonate behavior can be isolated from other environmental
features. Preliminary observations suggest that damselflies congregate
at sites with cattails, and female dragonflies oviposit more frequently
when the lawn sites contain cattails. This experiment can help explain
why previous survey results showed more odonate larvae near lawn sites
with tall shoreline plants than next to lawns manicured to the water's
edge. Minor landscaping changes can thus potentially influence
densities of these ecotone species.
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Crimson-winged whiteface dragonfly |
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