Managed metapopulations: do salmon hatchery 'sources' lead to in-river 'sinks' in conservation?

Autor: Rachel C Johnson, Peter K Weber, John D Wikert, Michelle L Workman, R Bruce MacFarlane, Marty J Grove, Axel K Schmitt
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: PLoS ONE, Vol 7, Iss 2, p e28880 (2012)
Druh dokumentu: article
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0028880
Popis: Maintaining viable populations of salmon in the wild is a primary goal for many conservation and recovery programs. The frequency and extent of connectivity among natal sources defines the demographic and genetic boundaries of a population. Yet, the role that immigration of hatchery-produced adults may play in altering population dynamics and fitness of natural populations remains largely unquantified. Quantifying, whether natural populations are self-sustaining, functions as sources (population growth rate in the absence of dispersal, λ>1), or as sinks (λ
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