Factors Influencing the Functional Roles of Crayfish in Stream Ecosystems
Hoekstra, Jon D.
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https://hdl.handle.net/2142/87013
Description
Title
Factors Influencing the Functional Roles of Crayfish in Stream Ecosystems
Author(s)
Hoekstra, Jon D.
Issue Date
2004
Doctoral Committee Chair(s)
Daniel A. Soluk
Department of Study
Ecology, Ethology, and Evolution
Discipline
Ecology, Ethology, and Evolution
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Biology, Zoology
Language
eng
Abstract
Results supported an important role for juvenile crayfish in both systems. At Jordan Creek, juveniles were >10 times more abundant than adults during summer and likely accounted for the majority of crayfish effects in the stream. At Shivering Sands Creek, small crayfish greatly reduced the abundance of many invertebrate taxa and also accelerated leaf litter breakdown rates within enclosures. In times and places where they are abundant, juvenile crayfish may strongly modify ecosystem processes and benthic invertebrate assemblages in streams.
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