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Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream

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Bibliographische Detailangaben
Zeitschriftentitel: Canadian Journal of Zoology
Personen und Körperschaften: Campbell, Christine E
In: Canadian Journal of Zoology, 80, 2002, 6, S. 997-1003
Medientyp: E-Article
Sprache: Englisch
veröffentlicht:
Canadian Science Publishing
Schlagwörter:
author_facet Campbell, Christine E
Campbell, Christine E
author Campbell, Christine E
spellingShingle Campbell, Christine E
Canadian Journal of Zoology
Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
Animal Science and Zoology
Ecology, Evolution, Behavior and Systematics
author_sort campbell, christine e
spelling Campbell, Christine E 0008-4301 1480-3283 Canadian Science Publishing Animal Science and Zoology Ecology, Evolution, Behavior and Systematics http://dx.doi.org/10.1139/z02-077 <jats:p> While rainfall events may lead to flushing of zooplankton from lakes, with implications for stream productivity near lake outlets, consideration also needs to be given to zooplankton transported farther downstream. To evaluate such downstream transport, daytime invertebrate drift, stream discharge, and rainfall events were monitored over 4 summers in Cook's Brook, Newfoundland, at a downstream site 1.0 km below the outlet of Big Cook's Pond and an upstream site 1.0 km upstream of the pond. Microcrustacean zooplankton were abundant in some downstream samples; high percent zooplankton abundance (87–94%) corresponded to the highest total invertebrate drift densities. Percent zooplankton in downstream drift was strongly correlated with recent rainfall (r<jats:sub>S</jats:sub> = 0.815, p = 0.025) and stream discharge (r<jats:sub>S</jats:sub> = 0.964, p = 0.001). The majority of microcrustaceans in the drift were planktonic cladocerans and copepods, the species composition being similar to that in Big Cook's Pond. No zooplankton were ever collected from the upstream site. Ephemeroptera, Diptera, Trichoptera, and Ostracoda were abundant in most drift samples. Zooplankton drift (mean = 0.17 individuals/m<jats:sup>3</jats:sup>) in Cook's Brook appears to be catastrophic drift, with high precipitation rates and resultant increased flushing rate in Big Cook's Pond leading to "washout" of microcrustaceans 1 km downstream. </jats:p> Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream Canadian Journal of Zoology
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series Canadian Journal of Zoology
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title Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_unstemmed Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_full Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_fullStr Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_full_unstemmed Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_short Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_sort rainfall events and downstream drift of microcrustacean zooplankton in a newfoundland boreal stream
topic Animal Science and Zoology
Ecology, Evolution, Behavior and Systematics
url http://dx.doi.org/10.1139/z02-077
publishDate 2002
physical 997-1003
description <jats:p> While rainfall events may lead to flushing of zooplankton from lakes, with implications for stream productivity near lake outlets, consideration also needs to be given to zooplankton transported farther downstream. To evaluate such downstream transport, daytime invertebrate drift, stream discharge, and rainfall events were monitored over 4 summers in Cook's Brook, Newfoundland, at a downstream site 1.0 km below the outlet of Big Cook's Pond and an upstream site 1.0 km upstream of the pond. Microcrustacean zooplankton were abundant in some downstream samples; high percent zooplankton abundance (87–94%) corresponded to the highest total invertebrate drift densities. Percent zooplankton in downstream drift was strongly correlated with recent rainfall (r<jats:sub>S</jats:sub> = 0.815, p = 0.025) and stream discharge (r<jats:sub>S</jats:sub> = 0.964, p = 0.001). The majority of microcrustaceans in the drift were planktonic cladocerans and copepods, the species composition being similar to that in Big Cook's Pond. No zooplankton were ever collected from the upstream site. Ephemeroptera, Diptera, Trichoptera, and Ostracoda were abundant in most drift samples. Zooplankton drift (mean = 0.17 individuals/m<jats:sup>3</jats:sup>) in Cook's Brook appears to be catastrophic drift, with high precipitation rates and resultant increased flushing rate in Big Cook's Pond leading to "washout" of microcrustaceans 1 km downstream. </jats:p>
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author Campbell, Christine E
author_facet Campbell, Christine E, Campbell, Christine E
author_sort campbell, christine e
container_issue 6
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container_title Canadian Journal of Zoology
container_volume 80
description <jats:p> While rainfall events may lead to flushing of zooplankton from lakes, with implications for stream productivity near lake outlets, consideration also needs to be given to zooplankton transported farther downstream. To evaluate such downstream transport, daytime invertebrate drift, stream discharge, and rainfall events were monitored over 4 summers in Cook's Brook, Newfoundland, at a downstream site 1.0 km below the outlet of Big Cook's Pond and an upstream site 1.0 km upstream of the pond. Microcrustacean zooplankton were abundant in some downstream samples; high percent zooplankton abundance (87–94%) corresponded to the highest total invertebrate drift densities. Percent zooplankton in downstream drift was strongly correlated with recent rainfall (r<jats:sub>S</jats:sub> = 0.815, p = 0.025) and stream discharge (r<jats:sub>S</jats:sub> = 0.964, p = 0.001). The majority of microcrustaceans in the drift were planktonic cladocerans and copepods, the species composition being similar to that in Big Cook's Pond. No zooplankton were ever collected from the upstream site. Ephemeroptera, Diptera, Trichoptera, and Ostracoda were abundant in most drift samples. Zooplankton drift (mean = 0.17 individuals/m<jats:sup>3</jats:sup>) in Cook's Brook appears to be catastrophic drift, with high precipitation rates and resultant increased flushing rate in Big Cook's Pond leading to "washout" of microcrustaceans 1 km downstream. </jats:p>
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spelling Campbell, Christine E 0008-4301 1480-3283 Canadian Science Publishing Animal Science and Zoology Ecology, Evolution, Behavior and Systematics http://dx.doi.org/10.1139/z02-077 <jats:p> While rainfall events may lead to flushing of zooplankton from lakes, with implications for stream productivity near lake outlets, consideration also needs to be given to zooplankton transported farther downstream. To evaluate such downstream transport, daytime invertebrate drift, stream discharge, and rainfall events were monitored over 4 summers in Cook's Brook, Newfoundland, at a downstream site 1.0 km below the outlet of Big Cook's Pond and an upstream site 1.0 km upstream of the pond. Microcrustacean zooplankton were abundant in some downstream samples; high percent zooplankton abundance (87–94%) corresponded to the highest total invertebrate drift densities. Percent zooplankton in downstream drift was strongly correlated with recent rainfall (r<jats:sub>S</jats:sub> = 0.815, p = 0.025) and stream discharge (r<jats:sub>S</jats:sub> = 0.964, p = 0.001). The majority of microcrustaceans in the drift were planktonic cladocerans and copepods, the species composition being similar to that in Big Cook's Pond. No zooplankton were ever collected from the upstream site. Ephemeroptera, Diptera, Trichoptera, and Ostracoda were abundant in most drift samples. Zooplankton drift (mean = 0.17 individuals/m<jats:sup>3</jats:sup>) in Cook's Brook appears to be catastrophic drift, with high precipitation rates and resultant increased flushing rate in Big Cook's Pond leading to "washout" of microcrustaceans 1 km downstream. </jats:p> Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream Canadian Journal of Zoology
spellingShingle Campbell, Christine E, Canadian Journal of Zoology, Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream, Animal Science and Zoology, Ecology, Evolution, Behavior and Systematics
title Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_full Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_fullStr Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_full_unstemmed Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_short Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
title_sort rainfall events and downstream drift of microcrustacean zooplankton in a newfoundland boreal stream
title_unstemmed Rainfall events and downstream drift of microcrustacean zooplankton in a Newfoundland boreal stream
topic Animal Science and Zoology, Ecology, Evolution, Behavior and Systematics
url http://dx.doi.org/10.1139/z02-077