Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling
Global homogenization of biota is underway through worldwide introduction and establishment of nonindigenous (exotic) species. Freshwater ecologists should devote more attention to exotic species for two reasons. First, exotics provide an opportunity to test hypotheses about what characteristics of...
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ftohiostateu:oai:kb.osu.edu:1811/37075 2023-05-15T16:02:06+02:00 Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling Lodge, David M. Stein, Roy A. Brown, Kenneth M. Covich, Alan P. Bronmark, Christer Garvey, James E. Klosiewski, Steven P. 1998 application/pdf http://hdl.handle.net/1811/37075 en_US eng Lodge, David M.; Stein, Roy A.; Brown, Kenneth M.; Covich, Alan P.; Bronmark, Christer; Garvey, James E.; Klosiewski, Steven P. "Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling," Australian Journal of Ecology, v. 23, no. 1, 1998, pp. 53-67. http://hdl.handle.net/1811/37075 exotic species crayfish spatial scaling Article 1998 ftohiostateu 2020-08-22T19:42:41Z Global homogenization of biota is underway through worldwide introduction and establishment of nonindigenous (exotic) species. Freshwater ecologists should devote more attention to exotic species for two reasons. First, exotics provide an opportunity to test hypotheses about what characteristics of species or habitats are related to successful establishment or invasibility, respectively. Second, predicting which species will cause large ecological change is an important challenge for natural resource managers. Rigorous statistical relationships linking species characteristics to probability of establishment or of causing ecological impacts are needed. In addition, it is important to know how reliable different sorts of experiments are in guiding predictions. We address this issue with different spatial scales of experiments testing the impact of two predators on native snail assemblages in northern Wisconsin USA lakes: an exotic crayfish, the rusty crayfish (Orconectes rusticus); and a native fish predator, the pumpkinseed sunfish (Lepomis gibossus). For the crayfish, laboratory experiments, a field cage experiment, and a snapshot survey of 21 lakes gave consistent results: the crayfish reduced abundance and species richness of native snails. Laboratory and field experiments suggested that pumpkinseed sunfish should have a similar impact, but the lake survey suggested little impact. Unfortunately, no algorithms exist to guide scaling up from small-scale experiments to the whole-lake, long-term management scale. To protect native biodiversity, management of freshwater exotic species should be targeted on lakes or drainages that are both vulnerable to colonization by an exotic, and that harbour endemic species. Management should focus on preventing introduction because eradication after establishment is usually not possible. The following grants funded our research: NSFBSR85-00775, NSFBSR89-07407, EPA CR820290-0T -0 (to DML). Article in Journal/Newspaper DML Ohio State University (OSU): Knowledge Bank |
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Open Polar |
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Ohio State University (OSU): Knowledge Bank |
op_collection_id |
ftohiostateu |
language |
English |
topic |
exotic species crayfish spatial scaling |
spellingShingle |
exotic species crayfish spatial scaling Lodge, David M. Stein, Roy A. Brown, Kenneth M. Covich, Alan P. Bronmark, Christer Garvey, James E. Klosiewski, Steven P. Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling |
topic_facet |
exotic species crayfish spatial scaling |
description |
Global homogenization of biota is underway through worldwide introduction and establishment of nonindigenous (exotic) species. Freshwater ecologists should devote more attention to exotic species for two reasons. First, exotics provide an opportunity to test hypotheses about what characteristics of species or habitats are related to successful establishment or invasibility, respectively. Second, predicting which species will cause large ecological change is an important challenge for natural resource managers. Rigorous statistical relationships linking species characteristics to probability of establishment or of causing ecological impacts are needed. In addition, it is important to know how reliable different sorts of experiments are in guiding predictions. We address this issue with different spatial scales of experiments testing the impact of two predators on native snail assemblages in northern Wisconsin USA lakes: an exotic crayfish, the rusty crayfish (Orconectes rusticus); and a native fish predator, the pumpkinseed sunfish (Lepomis gibossus). For the crayfish, laboratory experiments, a field cage experiment, and a snapshot survey of 21 lakes gave consistent results: the crayfish reduced abundance and species richness of native snails. Laboratory and field experiments suggested that pumpkinseed sunfish should have a similar impact, but the lake survey suggested little impact. Unfortunately, no algorithms exist to guide scaling up from small-scale experiments to the whole-lake, long-term management scale. To protect native biodiversity, management of freshwater exotic species should be targeted on lakes or drainages that are both vulnerable to colonization by an exotic, and that harbour endemic species. Management should focus on preventing introduction because eradication after establishment is usually not possible. The following grants funded our research: NSFBSR85-00775, NSFBSR89-07407, EPA CR820290-0T -0 (to DML). |
format |
Article in Journal/Newspaper |
author |
Lodge, David M. Stein, Roy A. Brown, Kenneth M. Covich, Alan P. Bronmark, Christer Garvey, James E. Klosiewski, Steven P. |
author_facet |
Lodge, David M. Stein, Roy A. Brown, Kenneth M. Covich, Alan P. Bronmark, Christer Garvey, James E. Klosiewski, Steven P. |
author_sort |
Lodge, David M. |
title |
Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling |
title_short |
Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling |
title_full |
Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling |
title_fullStr |
Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling |
title_full_unstemmed |
Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling |
title_sort |
predicting impact of freshwater exotic species on native biodiversity: challenges in spatial scaling |
publishDate |
1998 |
url |
http://hdl.handle.net/1811/37075 |
genre |
DML |
genre_facet |
DML |
op_relation |
Lodge, David M.; Stein, Roy A.; Brown, Kenneth M.; Covich, Alan P.; Bronmark, Christer; Garvey, James E.; Klosiewski, Steven P. "Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling," Australian Journal of Ecology, v. 23, no. 1, 1998, pp. 53-67. http://hdl.handle.net/1811/37075 |
_version_ |
1766397712735928320 |