Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska
Spawning salmon create patches of disturbance through redd digging which can reduce macroinvertebrate abundance and biomass in spawning habitat. We asked whether displaced invertebrates use non-spawning habitats as refugia in streams. Our study explored how the spatial and temporal distribution of m...
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ftoregonstate:ir.library.oregonstate.edu:v692t661k 2024-09-15T18:28:41+00:00 Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska Campbell, Emily Y. Merritt, Richard W. Cummins, Kenneth W. Benbow, M. Eric Fisheries and Wildlife https://ir.library.oregonstate.edu/concern/articles/v692t661k English [eng] eng unknown PLoS ONE https://ir.library.oregonstate.edu/concern/articles/v692t661k Attribution 3.0 United States Article ftoregonstate 2024-07-22T18:06:04Z Spawning salmon create patches of disturbance through redd digging which can reduce macroinvertebrate abundance and biomass in spawning habitat. We asked whether displaced invertebrates use non-spawning habitats as refugia in streams. Our study explored how the spatial and temporal distribution of macroinvertebrates changed during a pink salmon (Oncorhynchus gorbuscha) spawning run and compared macroinvertebrates in spawning (riffle) and non-spawning (refugia) habitats in an Alaskan stream. Potential refugia included: pools, stream margins and the hyporheic zone, and we also sampled invertebrate drift. We predicted that macroinvertebrates would decline in riffles and increase in drift and refugia habitats during salmon spawning. We observed a reduction in the density, biomass and taxonomic richness of macroinvertebrates in riffles during spawning. There was no change in pool and margin invertebrate communities, except insect biomass declined in pools during the spawning period. Macroinvertebrate density was greater in the hyporheic zone and macroinvertebrate density and richness increased in the drift during spawning. We observed significant invertebrate declines within spawning habitat; however in non-spawning habitat, there were less pronounced changes in invertebrate density and richness. The results observed may be due to spawning-related disturbances, insect phenology, or other variables. We propose that certain in-stream habitats could be important for the persistence of macroinvertebrates during salmon spawning in a Southeast Alaskan stream. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Alaska ScholarsArchive@OSU (Oregon State University) |
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ScholarsArchive@OSU (Oregon State University) |
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Spawning salmon create patches of disturbance through redd digging which can reduce macroinvertebrate abundance and biomass in spawning habitat. We asked whether displaced invertebrates use non-spawning habitats as refugia in streams. Our study explored how the spatial and temporal distribution of macroinvertebrates changed during a pink salmon (Oncorhynchus gorbuscha) spawning run and compared macroinvertebrates in spawning (riffle) and non-spawning (refugia) habitats in an Alaskan stream. Potential refugia included: pools, stream margins and the hyporheic zone, and we also sampled invertebrate drift. We predicted that macroinvertebrates would decline in riffles and increase in drift and refugia habitats during salmon spawning. We observed a reduction in the density, biomass and taxonomic richness of macroinvertebrates in riffles during spawning. There was no change in pool and margin invertebrate communities, except insect biomass declined in pools during the spawning period. Macroinvertebrate density was greater in the hyporheic zone and macroinvertebrate density and richness increased in the drift during spawning. We observed significant invertebrate declines within spawning habitat; however in non-spawning habitat, there were less pronounced changes in invertebrate density and richness. The results observed may be due to spawning-related disturbances, insect phenology, or other variables. We propose that certain in-stream habitats could be important for the persistence of macroinvertebrates during salmon spawning in a Southeast Alaskan stream. |
author2 |
Fisheries and Wildlife |
format |
Article in Journal/Newspaper |
author |
Campbell, Emily Y. Merritt, Richard W. Cummins, Kenneth W. Benbow, M. Eric |
spellingShingle |
Campbell, Emily Y. Merritt, Richard W. Cummins, Kenneth W. Benbow, M. Eric Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska |
author_facet |
Campbell, Emily Y. Merritt, Richard W. Cummins, Kenneth W. Benbow, M. Eric |
author_sort |
Campbell, Emily Y. |
title |
Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska |
title_short |
Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska |
title_full |
Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska |
title_fullStr |
Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska |
title_full_unstemmed |
Spatial and Temporal Variability of Macroinvertebrates in Spawning and Non-Spawning Habitats during a Salmon Run in Southeast Alaska |
title_sort |
spatial and temporal variability of macroinvertebrates in spawning and non-spawning habitats during a salmon run in southeast alaska |
publisher |
PLoS ONE |
url |
https://ir.library.oregonstate.edu/concern/articles/v692t661k |
genre |
Oncorhynchus gorbuscha Pink salmon Alaska |
genre_facet |
Oncorhynchus gorbuscha Pink salmon Alaska |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/v692t661k |
op_rights |
Attribution 3.0 United States |
_version_ |
1810470146417885184 |