STEVEN P. CAMPBELL, PHD
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    • Monitoring the Karner blue
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    • Prairie warbler migration
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    • Spatial PVA of Sonoran desert tortoise
    • Endemic vs non-native snails
    • Wildlife use of willow crops
    • Patterns of avian habitat use
    • Bird response to timber harvesting
    • Review of recovery plans
    • Plant hybrid zones as centers of biodiversity
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Coexistence of an endangered endemic species with a non-native competitor


Distinguishing between non-native species that coexist with native species and those that threaten their persistence is critical for conservation and management. We investigated this distinction for a non-native terrestrial snail (Succinea sp.) (Sp. B) that occurs with the closely-related Chittenango ovate amber snail (Novisuccinea chittenangoensis) (COAS), an endangered species that is restricted to a single, known site. We examined the effects of density and body size of Sp. B on growth and mortality of COAS using ex situ competition experiments. We also conducted mark-recapture surveys to document trends of the in situ population of COAS and to identify spatio-temporal factors that may mitigate any competitive interactions between COAS and Sp. B. The results of this study were published in Biological Invasions (PDF).
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  • Home
  • Research
    • Monitoring the Karner blue
    • PPSOB Birds
    • Prairie warbler migration
    • PPSOB Ecology and Management
    • Spatial PVA of Sonoran desert tortoise
    • Endemic vs non-native snails
    • Wildlife use of willow crops
    • Patterns of avian habitat use
    • Bird response to timber harvesting
    • Review of recovery plans
    • Plant hybrid zones as centers of biodiversity
    • Other experiences
  • Teaching
  • CV
  • Publications
  • Contact