Introduced beaver improve growth of non-native trout in Tierra del Fuego, South America.

ABSTRACT: Species introductions threaten ecosystem function worldwide, and interactions among introduced species may amplify their impacts. Effects of multiple invasions are still poorly studied, and often, the mechanisms underlying potential interactions among invaders are unknown. Despite being a remote and well-conserved area, the southern portion of South America has been greatly impacted by invasions of both the American beaver (Castor canadensis) and Brown Trout (Salmo trutta fario). Here, we compared growth, condition, diet, and stable isotopes of sulfur δ³⁴S, nitrogen δ¹⁵N, and carbon δ¹³C for stream-living Brown Trout from streams with (n = 6) and without (n = 6) beaver in Tierra del Fuego, Chile. We show that beaver may facilitat

SUBMITTER: Arismendi I 

PROVIDER: S-EPMC7487219 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature