Assertion: lamprey's impact | /r/HasProperty | difficult to attribute
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text: Indirect impacts may be more difficult to attribute to sea lamprey, but changes in fish species composition spurred by sea lamprey introduction (especially the proliferation of alewife) have likely had far-reaching indirect effects on other biotic and abiotic components of the Great Lakes ecosystems, including plankton communities (J. Gunderson, MN Sea Grant, pers.