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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
A global assessment of freshwater fish introductions in mediterranean-climate regions
Hydrobiologia, Volume 719, No. 1, Year 2013
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Description
Mediterranean-climate regions (med-regions) are global hotspots of endemism facing mounting environmental threats associated with human-related activities, including the ecological impacts associated with non-native species introductions. We review freshwater fish introductions across med-regions to evaluate the influences of non-native fishes on the biogeography of taxonomic and functional diversity. Our synthesis revealed that 136 freshwater fish species (26 families, 13 orders) have been introduced into med-regions globally. These introductions, and local extirpations, have increased taxonomic and functional faunal similarity among regions by an average of 7.5% (4.6-11.4%; Jaccard) and 7.2% (1.4-14.0%; Bray-Curtis), respectively. Faunal homogenisation was highest in Chile and the western Med Basin, whereas sw Cape and the Aegean Sea drainages showed slight differentiation (decrease in faunal similarity) over time. At present, fish faunas of different med-regions have widespread species in common (e.g. Gambusia holbrooki, Cyprinus carpio, Oncorhynchus mykiss, Carassius auratus, and Micropterus salmoides) which are typically large-bodied, non-migratory, have higher physiological tolerance, and display fast population growth rates. Our findings suggest that intentional and accidental introductions of freshwater fish have dissolved dispersal barriers and significantly changed the present-day biogeography of med-regions across the globe. Conservation challenges in med-regions include understanding the ecosystem consequences of non-native species introductions at macro-ecological scales. © 2013 Springer Science+Business Media Dordrecht.
Authors & Co-Authors
Marr, Sean Murray
South Africa, Cape Town
University of Cape Town
Olden, Julian D.
United States, Seattle
University of Washington
Leprieur, Fabien
France, Paris
Cnrs Centre National de la Recherche Scientifique
Arismendi, Ivan
United States, Corvallis
Oregon State University
Ćaleta, Marko
Croatia, Zagreb
University of Zagreb
Morgan, David L.
Australia, Perth
Murdoch University
Nocita, Annamaria
Italy, Florence
Università Degli Studi Di Firenze
Šanda, Radek
Czech Republic, Prague
Národní Muzeum, Prague
Serhan Tarkan, A.
Turkey, Mugla
Muğla Sıtkı Koçman Üniversitesi
García-Berthou, Emili
Spain, Girona
Universitat de Girona
Statistics
Citations: 69
Authors: 10
Affiliations: 10
Identifiers
Doi:
10.1007/s10750-013-1486-9
ISSN:
00188158
e-ISSN:
15735117
Study Design
Cross Sectional Study