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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Journal ArticleDOI
Eight questions about invasions and ecosystem functioning
TL;DR: I pose eight questions central to understanding how biological invasions affect ecosystems, assess progress towards answering those questions and suggest ways in which progress might be made.
Journal ArticleDOI
Advancing impact prediction and hypothesis testing in invasion ecology using a comparative functional response approach
Jaimie T. A. Dick,Mhairi E. Alexander,Jonathan M. Jeschke,Anthony Ricciardi,Hugh J. MacIsaac,Tamara B. Robinson,Sabrina Kumschick,Olaf L. F. Weyl,Alison M. Dunn,Melanie J. Hatcher,Rachel A. Paterson,Keith D. Farnsworth,David M. Richardson +12 more
TL;DR: This framework demonstrates how comparisons of invader and native functional responses, within and between Type II and IIIfunctional responses, allow testing of the likely population-level outcomes of invasions for affected species, and describes how recent studies support the predictive capacity of this method.
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Native invaders – challenges for science, management, policy, and society
TL;DR: Convincing stakeholders to comply with management actions aimed at controlling native invaders creates societal challenges and policy makers must prioritize goals from varied and often conflicting human interests.
Journal ArticleDOI
Homogenization patterns of the world’s freshwater fish faunas
TL;DR: It is demonstrated that current homogenization of the freshwater fish faunas is still low at the world scale but reaches substantial levels in some highly invaded river basins from the Nearctic and Palearctic realms, stressing the need for further understanding of the ecological consequences of homogenized species assemblages.
Journal ArticleDOI
A review of current knowledge, risk and ecological impacts associated with non-native freshwater fish introductions in South Africa.
TL;DR: The aim of this paper is to summarise the current knowledge, risk and ecological impacts associated with non-native freshwater fish introductions in South Africa.
References
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Journal ArticleDOI
Catastrophic Change in Species-Rich Freshwater EcosystemsThe lessons of Lake Victoria
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Introduction of non-native freshwater fish: is it all bad
TL;DR: In this paper, the authors show that on the global scale, the majority of freshwater fish introductions are not identified as having an ecological impact while having great societal benefits, while a great majority of research focuses on the few negative cases.
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Invasion success of vertebrates in Europe and North America.
TL;DR: Investigating all three steps of the invasion process for all freshwater fish, mammals, and birds native to Europe or North America finds a success of approximately 50% at each step, showing that, once a vertebrate is introduced, it has a high potential to become invasive.
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Introduction of non‐native freshwater fish can certainly be bad
TL;DR: It is demonstrated that many realworld examples of freshwater fish introductions have catastrophic ecological consequences, such as those of the Nile perch, carp, tilapias, catfishes, and the zebra mussel.
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Pacific salmon and the ecology of coastal ecosystems
Daniel E. Schindler,Mark D. Scheuerell,Jonathan W. Moore,Scott M. Gende,Tessa B. Francis,Wendy J. Palen +5 more
TL;DR: One of the most spectacular phenomena in nature is the annual return of millions of salmon to spawn in their natal streams and lakes along the Pacific coast of North America The salmon die after spawning, and the nutrients and energy in their bodies, derived almost entirely from marine sources, are deposited in the freshwater ecosystems This represents a vital input to the ecosystems used as spawning grounds as mentioned in this paper.