Impact of Fishing and Stocking Practices on Coregonid Diversity
2015
Anneville, Orlane | Lasne, Emilien | Guillard, Jean | Eckmann, Reiner | Stockwell, Jason | Gillet, Christian | Yule, Daniel | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) ; Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) | Balaton Limnological Research Institute ; Centre for Ecological Research [Budapest] ; Eötvös Loránd Tudományegyetem = Eötvös Loránd University [Budapest] (ELTE)-Hungarian Academy of Sciences (MTA)-Eötvös Loránd Tudományegyetem = Eötvös Loránd University [Budapest] (ELTE)-Hungarian Academy of Sciences (MTA) | University of Vermont [Burlington] | Great Lakes Science Center ; United States Geological Survey (USGS)
International audience
Mostrar más [+] Menos [-]Inglés. Fish species diversity can be lost through interacting stressors including habitat loss, stocking and overfishing. Although a multitude of stressors have played a role in the global decline of coregonid (Coregonus spp.) diversity, a number of contemporary studies have identified habitat loss stem-ming from eutrophication as the primary cause. Unfortunately, reconstructing the role of fishing and stocking practices can be difficult, because these records are incomplete or appear only in hard-to-access historic grey literature. Based on an illustrative set of historic and contemporary studies, we describe how fisheries management practices may have contributed to coregonid di-versity loss in European and North American lakes. We provide case studies examining how fish-ing and stocking may reduce coregonid diversity through demographic decline and introgressive hybridization. In some lakes, fisheries management practices may have led to a loss of coregonid diversity well before issues with habitat degradation manifested. Our review suggests that fish conservation policies could beneficially consider the relative importance of all stressors, including management practices, as potential drivers of diversity loss.
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