Ecosystem Roles
Echinoderms are usually intricate parts of their ecosystems. Many asteroids are keystone species. Sea urchins, if not controlled by predators, may overgraze their habitat. Asteroids have several commensals, including polychaetes that feed on leftovers from the sea star's prey items.
Ecosystem Impact: keystone species
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Echinodermata
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©1995-2012, The Regents of the University of Michigan and its licensors
© The Regents of the University of Michigan and its licensors
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Animal Diversity Web
Author: Renee Sherman Mulcrone,
Mulcrone, R. 2005. "Echinodermata" (On-line), Animal Diversity Web. Accessed April 04, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Echinodermata.html
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