Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment
Phosphorus and nitrogen additions over a 3-year period (1991-1993) significantly increased the abundance of most benthic macroinvertebrate taxa collected on artificial substrates in a small oligotrophic lake in insular Newfoundland relative to a nearby control lake. The speed and magnitude of respon...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
1997
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Online Access: | http://dx.doi.org/10.1139/f96-267 http://www.nrcresearchpress.com/doi/pdf/10.1139/f96-267 |
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crcansciencepubl:10.1139/f96-267 2024-09-15T18:20:06+00:00 Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment Clarke, K D Knoechel, R Ryan, P M 1997 http://dx.doi.org/10.1139/f96-267 http://www.nrcresearchpress.com/doi/pdf/10.1139/f96-267 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 54, issue 1, page 89-95 ISSN 0706-652X 1205-7533 journal-article 1997 crcansciencepubl https://doi.org/10.1139/f96-267 2024-08-08T04:13:35Z Phosphorus and nitrogen additions over a 3-year period (1991-1993) significantly increased the abundance of most benthic macroinvertebrate taxa collected on artificial substrates in a small oligotrophic lake in insular Newfoundland relative to a nearby control lake. The speed and magnitude of response was related to both the trophic role and the life-cycle duration of the taxa. This created a response continuum with small, fast-growing herbivores such as sphaeriid clams and gastropods demonstrating more pronounced and more rapid abundance responses than longer lived detritivores such as Ephemeroptera, which, in turn, had quicker responses than long-lived predators. These observations support the hypothesis that these benthic communities are controlled by bottom-up resource processes during the initial years of enrichment and provide the basis for expecting future enhancement of benthivorous salmonid populations in the fertilized lake. Article in Journal/Newspaper Newfoundland Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 54 1 89 95 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Phosphorus and nitrogen additions over a 3-year period (1991-1993) significantly increased the abundance of most benthic macroinvertebrate taxa collected on artificial substrates in a small oligotrophic lake in insular Newfoundland relative to a nearby control lake. The speed and magnitude of response was related to both the trophic role and the life-cycle duration of the taxa. This created a response continuum with small, fast-growing herbivores such as sphaeriid clams and gastropods demonstrating more pronounced and more rapid abundance responses than longer lived detritivores such as Ephemeroptera, which, in turn, had quicker responses than long-lived predators. These observations support the hypothesis that these benthic communities are controlled by bottom-up resource processes during the initial years of enrichment and provide the basis for expecting future enhancement of benthivorous salmonid populations in the fertilized lake. |
format |
Article in Journal/Newspaper |
author |
Clarke, K D Knoechel, R Ryan, P M |
spellingShingle |
Clarke, K D Knoechel, R Ryan, P M Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
author_facet |
Clarke, K D Knoechel, R Ryan, P M |
author_sort |
Clarke, K D |
title |
Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
title_short |
Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
title_full |
Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
title_fullStr |
Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
title_full_unstemmed |
Influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
title_sort |
influence of trophic role and life-cycle duration on timing and magnitude of benthic macroinvertebrate response to whole-lake enrichment |
publisher |
Canadian Science Publishing |
publishDate |
1997 |
url |
http://dx.doi.org/10.1139/f96-267 http://www.nrcresearchpress.com/doi/pdf/10.1139/f96-267 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 54, issue 1, page 89-95 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f96-267 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
54 |
container_issue |
1 |
container_start_page |
89 |
op_container_end_page |
95 |
_version_ |
1810458463186190336 |