The history and future of Lake Champlain's fishes and fisheries
In the last two centuries, physical, chemical, and biological alterations of Lake Champlain have resulted in the loss of two species, addition of 15 fish species, and listing of 16 species as endangered, threatened or of special concern. The lake currently supports 72 native fish species; lake trout...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1088.8174 2023-05-15T15:32:39+02:00 The history and future of Lake Champlain's fishes and fisheries J Ellen Marsden Richard W Langdon The Pennsylvania State University CiteSeerX Archives 2012 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1088.8174 http://www.uvm.edu/rsenr/emarsden/documents/Marsden%20and%20Langdon%202012.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1088.8174 http://www.uvm.edu/rsenr/emarsden/documents/Marsden%20and%20Langdon%202012.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.uvm.edu/rsenr/emarsden/documents/Marsden%20and%20Langdon%202012.pdf text 2012 ftciteseerx 2020-05-24T00:19:06Z In the last two centuries, physical, chemical, and biological alterations of Lake Champlain have resulted in the loss of two species, addition of 15 fish species, and listing of 16 species as endangered, threatened or of special concern. The lake currently supports 72 native fish species; lake trout (Salvelinus namaycush) and Atlantic salmon (Salmo salar) were extirpated by 1900, American eel (Anguilla rostrata) and lake sturgeon (Acipenser fulvescens) populations are extremely low, and walleye (Sander vitreum) are declining. Dams on several rivers, and ten causeways constructed in the mid 1800s to early 1900s, cut off access to critical spawning areas and may have limited fish movements. Siltation and sediment loading from agricultural activity and urban growth have degraded substrates and led to noxious algal blooms in some bays. A commercial fishery targeting spawning grounds of lake whitefish (Coregonus clupeaformis), lake trout, and walleye probably reduced numbers of these species prior to its closure in 1912. Non-native species introductions have had ecosystem-wide impacts. Sea lamprey (Petromyzon marinus) populations were very high prior to successful control, possibly as a consequence of ecological imbalance and habitat changes. A paucity of historic survey data or accurate species accounts limits our understanding of the causes of current fish population trends and status; in particular, the effects of habitat fragmentation within the lake and between the lake and its watershed are poorly understood. Holistic, ecosystem management, including pollution reduction and examination of habitat impacts, is necessary to restore the general structure of native biological assemblages. Text Atlantic salmon Salmo salar Unknown |
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English |
description |
In the last two centuries, physical, chemical, and biological alterations of Lake Champlain have resulted in the loss of two species, addition of 15 fish species, and listing of 16 species as endangered, threatened or of special concern. The lake currently supports 72 native fish species; lake trout (Salvelinus namaycush) and Atlantic salmon (Salmo salar) were extirpated by 1900, American eel (Anguilla rostrata) and lake sturgeon (Acipenser fulvescens) populations are extremely low, and walleye (Sander vitreum) are declining. Dams on several rivers, and ten causeways constructed in the mid 1800s to early 1900s, cut off access to critical spawning areas and may have limited fish movements. Siltation and sediment loading from agricultural activity and urban growth have degraded substrates and led to noxious algal blooms in some bays. A commercial fishery targeting spawning grounds of lake whitefish (Coregonus clupeaformis), lake trout, and walleye probably reduced numbers of these species prior to its closure in 1912. Non-native species introductions have had ecosystem-wide impacts. Sea lamprey (Petromyzon marinus) populations were very high prior to successful control, possibly as a consequence of ecological imbalance and habitat changes. A paucity of historic survey data or accurate species accounts limits our understanding of the causes of current fish population trends and status; in particular, the effects of habitat fragmentation within the lake and between the lake and its watershed are poorly understood. Holistic, ecosystem management, including pollution reduction and examination of habitat impacts, is necessary to restore the general structure of native biological assemblages. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
J Ellen Marsden Richard W Langdon |
spellingShingle |
J Ellen Marsden Richard W Langdon The history and future of Lake Champlain's fishes and fisheries |
author_facet |
J Ellen Marsden Richard W Langdon |
author_sort |
J Ellen Marsden |
title |
The history and future of Lake Champlain's fishes and fisheries |
title_short |
The history and future of Lake Champlain's fishes and fisheries |
title_full |
The history and future of Lake Champlain's fishes and fisheries |
title_fullStr |
The history and future of Lake Champlain's fishes and fisheries |
title_full_unstemmed |
The history and future of Lake Champlain's fishes and fisheries |
title_sort |
history and future of lake champlain's fishes and fisheries |
publishDate |
2012 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1088.8174 http://www.uvm.edu/rsenr/emarsden/documents/Marsden%20and%20Langdon%202012.pdf |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
http://www.uvm.edu/rsenr/emarsden/documents/Marsden%20and%20Langdon%202012.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1088.8174 http://www.uvm.edu/rsenr/emarsden/documents/Marsden%20and%20Langdon%202012.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766363147842617344 |