Christopher B. Anderson, Amy D. Rosemond: Beaver invasion alters terrestrial subsidies to subantarctic stream food webs. In: Hydrobiologia. Band 652, Nr. 1, Juni 2009, ISSN0018-8158, S. 349–361, doi:10.1007/s10750-010-0367-8.
Martin Sell: Biber in Europa 2003. Grafik Wikimedia Commons, 13. Juni 2004.
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Christopher B. Anderson, Amy D. Rosemond: Beaver invasion alters terrestrial subsidies to subantarctic stream food webs. In: Hydrobiologia. Band 652, Nr. 1, Juni 2009, ISSN0018-8158, S. 349–361, doi:10.1007/s10750-010-0367-8.