Distribution and postglacial dispersal of freshwater fishes of Labrador
The voluminous literature on the freshwater and diadromous fishes of Labrador is summarized in distributional maps. A total of 25 obligate freshwater spawning and one catadromous species has been reported. Fishes from Atlantic and Mississippi refugia probably invaded the region from the Great Lakes...
Published in: | Canadian Journal of Zoology |
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1986
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Online Access: | http://dx.doi.org/10.1139/z86-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/z86-005 |
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crcansciencepubl:10.1139/z86-005 2024-06-23T07:52:07+00:00 Distribution and postglacial dispersal of freshwater fishes of Labrador Black, Geoff A. Dempson, J. Brian Bruce, W. J. 1986 http://dx.doi.org/10.1139/z86-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/z86-005 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 64, issue 1, page 21-31 ISSN 0008-4301 1480-3283 journal-article 1986 crcansciencepubl https://doi.org/10.1139/z86-005 2024-05-24T13:05:52Z The voluminous literature on the freshwater and diadromous fishes of Labrador is summarized in distributional maps. A total of 25 obligate freshwater spawning and one catadromous species has been reported. Fishes from Atlantic and Mississippi refugia probably invaded the region from the Great Lakes basin primarily via glacial Lake Barlow-Ojibway, crossing Quebec north of the Otish Mountain to the headwaters of the Churchill River system. Additional dispersal routes existed to the north and south. Euryhaline species from an Atlantic refugium first invaded coastal regions during postglacial depression and marine inundation. Remnants of these occur as landlocked populations. Labrador is divided into three major ichthyogeographic regions based on species distributions and dispersal opportunities. The Churchill River forms one region and is divided into three subregions. Upstream of Churchill Falls there is only one species, which dispersed across Quebec. Downstream areas, including accessible tributaries, have all of the common fishes present in Labrador. Less accessible watersheds south of Churchill River form the third subregion and are limited to fishes with better swimming abilities. The second major region is southeastern Labrador which has euryhaline fishes from Atlantic refugia and three species from Quebec. The third major region is loosely defined as northern Labrador (> 55°N) although it is one of decreasing numbers of species with increasing latitude. Article in Journal/Newspaper Churchill River Canadian Science Publishing Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Canadian Journal of Zoology 64 1 21 31 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
The voluminous literature on the freshwater and diadromous fishes of Labrador is summarized in distributional maps. A total of 25 obligate freshwater spawning and one catadromous species has been reported. Fishes from Atlantic and Mississippi refugia probably invaded the region from the Great Lakes basin primarily via glacial Lake Barlow-Ojibway, crossing Quebec north of the Otish Mountain to the headwaters of the Churchill River system. Additional dispersal routes existed to the north and south. Euryhaline species from an Atlantic refugium first invaded coastal regions during postglacial depression and marine inundation. Remnants of these occur as landlocked populations. Labrador is divided into three major ichthyogeographic regions based on species distributions and dispersal opportunities. The Churchill River forms one region and is divided into three subregions. Upstream of Churchill Falls there is only one species, which dispersed across Quebec. Downstream areas, including accessible tributaries, have all of the common fishes present in Labrador. Less accessible watersheds south of Churchill River form the third subregion and are limited to fishes with better swimming abilities. The second major region is southeastern Labrador which has euryhaline fishes from Atlantic refugia and three species from Quebec. The third major region is loosely defined as northern Labrador (> 55°N) although it is one of decreasing numbers of species with increasing latitude. |
format |
Article in Journal/Newspaper |
author |
Black, Geoff A. Dempson, J. Brian Bruce, W. J. |
spellingShingle |
Black, Geoff A. Dempson, J. Brian Bruce, W. J. Distribution and postglacial dispersal of freshwater fishes of Labrador |
author_facet |
Black, Geoff A. Dempson, J. Brian Bruce, W. J. |
author_sort |
Black, Geoff A. |
title |
Distribution and postglacial dispersal of freshwater fishes of Labrador |
title_short |
Distribution and postglacial dispersal of freshwater fishes of Labrador |
title_full |
Distribution and postglacial dispersal of freshwater fishes of Labrador |
title_fullStr |
Distribution and postglacial dispersal of freshwater fishes of Labrador |
title_full_unstemmed |
Distribution and postglacial dispersal of freshwater fishes of Labrador |
title_sort |
distribution and postglacial dispersal of freshwater fishes of labrador |
publisher |
Canadian Science Publishing |
publishDate |
1986 |
url |
http://dx.doi.org/10.1139/z86-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/z86-005 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Glacial Lake |
geographic_facet |
Glacial Lake |
genre |
Churchill River |
genre_facet |
Churchill River |
op_source |
Canadian Journal of Zoology volume 64, issue 1, page 21-31 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z86-005 |
container_title |
Canadian Journal of Zoology |
container_volume |
64 |
container_issue |
1 |
container_start_page |
21 |
op_container_end_page |
31 |
_version_ |
1802643338898178048 |