Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams
Thesis (M.S.) University of Alaska Fairbanks, 1981 Development of water quality and quantity standards required for improved management of stream fisheries depends on understanding life cycles of the major benthic components. Because temperature is a major factor influencing aquatic insect life hist...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/14760 2023-12-24T10:25:11+01:00 Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams Howe, Allen L. 1981-05 http://hdl.handle.net/11122/14760 en_US eng http://hdl.handle.net/11122/14760 Wildlife and Fisheries Program Ephemeridae Mayflies Stoneflies Thesis ms 1981 ftunivalaska 2023-11-30T19:04:38Z Thesis (M.S.) University of Alaska Fairbanks, 1981 Development of water quality and quantity standards required for improved management of stream fisheries depends on understanding life cycles of the major benthic components. Because temperature is a major factor influencing aquatic insect life histories, subarctic streams provide excellent opportunities to examine organisms existing under extreme environmental conditions. Life histories and community structure of Ephemeroptera and Plecoptera were examined in two Alaskan subarctic streams during 1979 and 1980. Biweekly benthos samples were collected during the ice-free period in a second and a fourth order stream. Seventeen stonefly species and at least seven mayfly species were collected as nymphs or adults. Nymphal abundance and biomass were greater for all taxa in erosional zones (P < 0.05). Coexistance of systematically-related species occurred because of seasonal separation of life histories, or differences in food exploitation patterns. Alaska Cooperative Fishery Research Unit, Alaska Department of Fish and Game, U.S. Fish and Wildlife Service Thesis Subarctic Alaska University of Alaska: ScholarWorks@UA Fairbanks |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Ephemeridae Mayflies Stoneflies |
spellingShingle |
Ephemeridae Mayflies Stoneflies Howe, Allen L. Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams |
topic_facet |
Ephemeridae Mayflies Stoneflies |
description |
Thesis (M.S.) University of Alaska Fairbanks, 1981 Development of water quality and quantity standards required for improved management of stream fisheries depends on understanding life cycles of the major benthic components. Because temperature is a major factor influencing aquatic insect life histories, subarctic streams provide excellent opportunities to examine organisms existing under extreme environmental conditions. Life histories and community structure of Ephemeroptera and Plecoptera were examined in two Alaskan subarctic streams during 1979 and 1980. Biweekly benthos samples were collected during the ice-free period in a second and a fourth order stream. Seventeen stonefly species and at least seven mayfly species were collected as nymphs or adults. Nymphal abundance and biomass were greater for all taxa in erosional zones (P < 0.05). Coexistance of systematically-related species occurred because of seasonal separation of life histories, or differences in food exploitation patterns. Alaska Cooperative Fishery Research Unit, Alaska Department of Fish and Game, U.S. Fish and Wildlife Service |
format |
Thesis |
author |
Howe, Allen L. |
author_facet |
Howe, Allen L. |
author_sort |
Howe, Allen L. |
title |
Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams |
title_short |
Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams |
title_full |
Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams |
title_fullStr |
Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams |
title_full_unstemmed |
Life histories and community structure of Ephemeroptera and Plecoptera in two Alaskan subarctic streams |
title_sort |
life histories and community structure of ephemeroptera and plecoptera in two alaskan subarctic streams |
publishDate |
1981 |
url |
http://hdl.handle.net/11122/14760 |
geographic |
Fairbanks |
geographic_facet |
Fairbanks |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_relation |
http://hdl.handle.net/11122/14760 Wildlife and Fisheries Program |
_version_ |
1786200779289264128 |