Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream
Aquatic macroinvertebrates respond to patch dynamics arising from interactions of physical and chemical disturbances across space and time. Anadromous fish, such as sea lamprey, Petromyzon marinus, migrate from the ocean and alter physical and chemical properties of recipient spawning streams. Sea l...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-01-01
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| Series: | Journal of Freshwater Ecology |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/02705060.2017.1417168 |
| _version_ | 1818615908127473664 |
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| author | Daniel M. Weaver Stephen M. Coghlan Joseph Zydlewski |
| author_facet | Daniel M. Weaver Stephen M. Coghlan Joseph Zydlewski |
| author_sort | Daniel M. Weaver |
| collection | DOAJ |
| description | Aquatic macroinvertebrates respond to patch dynamics arising from interactions of physical and chemical disturbances across space and time. Anadromous fish, such as sea lamprey, Petromyzon marinus, migrate from the ocean and alter physical and chemical properties of recipient spawning streams. Sea lamprey disturb stream benthos physically through nest construction and spawning, and enrich food webs through nutrient deposition from decomposing carcasses. Sea lamprey spawning nests support greater macroinvertebrate abundance than adjacent reference areas, but concurrent effects of stream bed modification and nutrient supplementation have not been examined sequentially. We added carcasses and cleared substrate experimentally to mimic the physical disturbance and nutrient enrichment associated with lamprey spawning, and characterized effects on macroinvertebrate assemblage structure. We found that areas receiving cleared substrate and carcass nutrients were colonized largely by Simuliidae compared to upstream and downstream control areas that were colonized largely by Hydropsychidae, Philopotamidae, and Chironomidae. Environmental factors such as stream flow likely shape assemblages by physically constraining macroinvertebrate establishment and feeding. Our results indicate potential changes in macroinvertebrate assemblages from the physical and chemical changes to streams brought by spawning populations of sea lamprey. |
| first_indexed | 2024-12-16T16:41:22Z |
| format | Article |
| id | doaj.art-17b46e71883d4d6a825d6eb7c8b9e449 |
| institution | Directory Open Access Journal |
| issn | 0270-5060 2156-6941 |
| language | English |
| last_indexed | 2024-12-16T16:41:22Z |
| publishDate | 2018-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Freshwater Ecology |
| spelling | doaj.art-17b46e71883d4d6a825d6eb7c8b9e4492022-12-21T22:24:18ZengTaylor & Francis GroupJournal of Freshwater Ecology0270-50602156-69412018-01-01331193010.1080/02705060.2017.14171681417168Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal streamDaniel M. Weaver0Stephen M. Coghlan1Joseph Zydlewski2University of MaineUniversity of MaineUniversity of MaineAquatic macroinvertebrates respond to patch dynamics arising from interactions of physical and chemical disturbances across space and time. Anadromous fish, such as sea lamprey, Petromyzon marinus, migrate from the ocean and alter physical and chemical properties of recipient spawning streams. Sea lamprey disturb stream benthos physically through nest construction and spawning, and enrich food webs through nutrient deposition from decomposing carcasses. Sea lamprey spawning nests support greater macroinvertebrate abundance than adjacent reference areas, but concurrent effects of stream bed modification and nutrient supplementation have not been examined sequentially. We added carcasses and cleared substrate experimentally to mimic the physical disturbance and nutrient enrichment associated with lamprey spawning, and characterized effects on macroinvertebrate assemblage structure. We found that areas receiving cleared substrate and carcass nutrients were colonized largely by Simuliidae compared to upstream and downstream control areas that were colonized largely by Hydropsychidae, Philopotamidae, and Chironomidae. Environmental factors such as stream flow likely shape assemblages by physically constraining macroinvertebrate establishment and feeding. Our results indicate potential changes in macroinvertebrate assemblages from the physical and chemical changes to streams brought by spawning populations of sea lamprey.http://dx.doi.org/10.1080/02705060.2017.1417168Aquatic macroinvertebratessea lampreynutrientsspawningdisturbancestreamsanadromous |
| spellingShingle | Daniel M. Weaver Stephen M. Coghlan Joseph Zydlewski Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream Journal of Freshwater Ecology Aquatic macroinvertebrates sea lamprey nutrients spawning disturbance streams anadromous |
| title | Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream |
| title_full | Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream |
| title_fullStr | Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream |
| title_full_unstemmed | Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream |
| title_short | Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream |
| title_sort | effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small atlantic coastal stream |
| topic | Aquatic macroinvertebrates sea lamprey nutrients spawning disturbance streams anadromous |
| url | http://dx.doi.org/10.1080/02705060.2017.1417168 |
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