Journal ArticleDOI
Ecological Impacts of Nonnative Freshwater Fishes
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TLDR
The present study provides an illustrative conspectus of the most recent literature reporting ecological impacts of non-native freshwater fishes from a wide range of species and geographic locations and concludes with a prospectus of needed areas of scientific inquiry.Abstract:
There is a long history of introduction of non-native fishes in fresh waters and the introduction rate has accelerated greatly over time. Although not all introduced fishes have appreciable effects on their new ecosystems, many exert significant ecological, evolutionary, and economic impacts. For researchers, managers, and policy makers interested in conserving freshwater diversity, understanding the magnitude and array of potential impacts of non-native fish species is of utmost importance. The present study provides an illustrative conspectus of the most recent literature reporting ecological impacts of non-native freshwater fishes from a wide range of species and geographic locations and concludes with a prospectus of needed areas of scientific inquiry. Both directly and indirectly, invasive fishes affect a wide range of native organisms from zooplankton to mammals across multiple levels of biological organizations ranging from the genome to the ecosystem. Although a great deal of knowledge ha...read more
Citations
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Effect of rotenone on gill-respiring and plastron-respiring insects
TL;DR: Both groups of insects were found to be differentially susceptible to rotenone, with survival decreasing as functions of both increased concentration and temperature, and both gill- and plastron-respiring insects became substantial.
Journal ArticleDOI
Dietary specificity and overlap in endorheic river fishes: How do native and nonnative species compare?
TL;DR: Diet item analyses of over 500 fish stomachs indicated significant dietary overlaps between native and nonnative fishes and detailed dietary selectivity for all species, which suggests low dietary niche diversity, which could have the potential to amplify the competitive impacts of nonnatives on native species.
Journal ArticleDOI
Ecological risk analysis and genetically modified salmon: management in the face of uncertainty.
TL;DR: It is argued that predictive uncertainties are pervasive in complex eco-evolutionary systems and that it behooves those involved in the risk-analysis process to accept and communicate these limitations in the interest of timely, clear, and cautious risk-management options.
Journal ArticleDOI
Tourism and fishing
TL;DR: The first special issue on tourism and fishing in a tourism and hospitality journal was published in 2013 as mentioned in this paper, with the main research themes including the growing awareness of recreational fishing's impacts on the environment as well as the increasingly contested relationship with commercial fishing.
Journal ArticleDOI
Broad and fine-scale threats on threatened Brazilian freshwater fish: variability across hydrographic regions and taxonomic groups
TL;DR: In this paper, the authors used a database of threatened Brazilian freshwater fish species to test whether the major source of threats and the specific anthropogenic impacts to species vary across hydrographic regions and taxonomic groups.
References
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Journal ArticleDOI
Freshwater biodiversity: importance, threats, status and conservation challenges
David Dudgeon,Angela Arthington,Mark O. Gessner,Zen'ichiro Kawabata,Duncan Knowler,Christian Lévêque,Robert J. Naiman,Anne-Hélène Prieur-Richard,Doris Soto,Melanie L. J. Stiassny,Caroline A Sullivan +10 more
TL;DR: This article explores the special features of freshwater habitats and the biodiversity they support that makes them especially vulnerable to human activities and advocates continuing attempts to check species loss but urges adoption of a compromise position of management for biodiversity conservation, ecosystem functioning and resilience, and human livelihoods.
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Extinction by hybridization and introgression
TL;DR: Nonindigenous species can bring about a form of extinction of native flora and fauna by hybridization and introgression either through purposeful introduction by humans or through habitat modification, bringing previously isolated species into contact.
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Impact: Toward a Framework for Understanding the Ecological Effects of Invaders
Ingrid M. Parker,Daniel Simberloff,Karen Goodell,Marjorie J. Wonham,B. Von Holle,L. Goldwasser +5 more
TL;DR: This paper argues that the total impact of an invader includes three fundamental dimensions: range, abundance, and the per-capita or per-biomass effect of the invader, and recommends previous approaches to measuring impact at different organizational levels, and suggests some new approaches.
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The evolutionary impact of invasive species.
Harold A. Mooney,Elsa E. Cleland +1 more
TL;DR: This work explores the nature of these recent biotic exchanges and their consequences on evolutionary processes, and shows how flexibility in behavior, and mutualistic interactions, can aid in the success of invaders in their new environment.
Journal ArticleDOI
The problems with hybrids: setting conservation guidelines
TL;DR: This work provides a categorization of hybridization to help guide management decisions and recognizes that nearly every situation involving hybridization is different enough that general rules are not likely to be effective.