Evaluating Potential Effects of Exotic Freshwater Fish From Incomplete Species Presence–absence Data
By M. Pascual, P. Macchi, J. Urbanski, F. Marcos, C. Riva Rossi, M. Novara, P. Dell’Arciprete. Biological Invasions, 2002
160 citations recorded by the source corpus.
Many freshwater ecosystems and biotas around the world are threatened with extinction. Freshwater fishes, for example, are the most endangered vertebrates after amphibians. Exotic fish are widely recognized as a major disturbance agent for native fish. Evaluating the ecological effects of invaders presents many challenges and the problem is greatly augmented in parts of the world where the native fauna is poorly known and where exotic species are commonplace. We use the fish community of Patagonia, a small and distinct native biota dominated by exotic salmonids, as a case study to ask: what can we learn about the effects of exotic fish species from fragmentary or partial data and how do such data point the way to what needs to be learned? We review the available data and literature on the distribution and status of native and introduced fish. We compile a novel regional presence/absence species database, build fish distribution maps, describe distribution patterns of native and exotic species, and identify critical information voids. A comparative review of literature from Patagonia and Australasia, where a similar native and exotic fish fauna is found, helps us to identify research priorities and promising management strategies for the conservation of native fish fauna. We conclude that the main challenge for fish conservation in Patagonia is to identify management strategies that could preserve native species while maintaining the quality of salmonid fisheries.
Subfields: Ecology, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/10521a2268fbc4445ec1390f9b098d0b04d97b7c
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Citations in the corpus
- Chinook salmon invade southern South America (2008, background): “Toward the south, in the Argentinean headwaters of the large Puelo, Yelcho and Palena Rivers (42 S, 43 S and 44 S, respectively), sightings of anadromous ChS adults continue (Pascual et al. 2002; Baigún and Ferriz 2003; Soto et al. 2007).”
- The distribution of South American galaxiid fishes: the role of biological traits and post‐glacial history (2004, background): “Biogeographical data about fishes of Patagonia were summarized by Ringuelet et al. (1967), Pequeño (1989), Ortubay et al. (1994), Dyer (2000), Bello (2002), López et al. (2002) and Pascual et al. (2002).”
- Crying wolf, crying foul, or crying shame: alien salmonids and a biodiversity crisis in the southern cool-temperate galaxioid fishes? (2006, background): “Pascual et al. (2002) put it well for Argentina, writing: ‘‘The true challenge for fish conservation at the regional level, we believe, is to find ways to protect native fish compatible with maintaining highly priced sports fisheries.”
- Global introductions of salmon and trout in the genus Oncorhynchus: 1870–2007 (2008, background): “Rainbow trout eventually became a dominant self-sustaining species in the Patagonian watersheds (Pascual et al. 2001; Pascual et al. 2002; Riva Rossi et al. 2004).”
- Impact of fish introduction on planktonic food webs in lakes of the Patagonian Plateau (2006, background): “In Argentinean Patagonia, rainbow trout (Oncorhynchus mykiss) is the most widely distributed salmonid species (Pascual et al., 2002).”
- Freshwater fishes of Patagonia in the 21st Century after a hundred years of human settlement, species introductions, and environmental change (2007, background): “In fact, because salmonid introductions preceded the strongest influx of European immigration to the region, exotic fishes are not really regarded any differently from indigenous fishes by the general public and by most policymakers (Pascual et al., 2002).”