River ecosystem resilience to extreme flood events
Abstract Floods have a major influence in structuring river ecosystems. Considering projected increases in high‐magnitude rainfall events with climate change, major flooding events are expected to increase in many regions of the world. However, there is uncertainty about the effect of different floo...
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ftdoajarticles:oai:doaj.org/article:81b304a1815d41e9a01bb3ffefce6186 2023-05-15T17:59:40+02:00 River ecosystem resilience to extreme flood events Alexander M. Milner Jessica L. Picken Megan J. Klaar Anne L. Robertson Leonie R. Clitherow Lawrence Eagle Lee E. Brown 2018-08-01T00:00:00Z https://doi.org/10.1002/ece3.4300 https://doaj.org/article/81b304a1815d41e9a01bb3ffefce6186 EN eng Wiley https://doi.org/10.1002/ece3.4300 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.4300 https://doaj.org/article/81b304a1815d41e9a01bb3ffefce6186 Ecology and Evolution, Vol 8, Iss 16, Pp 8354-8363 (2018) climate change extreme floods macroinvertebrates meiofauna recovery resilience Ecology QH540-549.5 article 2018 ftdoajarticles https://doi.org/10.1002/ece3.4300 2022-12-31T06:29:52Z Abstract Floods have a major influence in structuring river ecosystems. Considering projected increases in high‐magnitude rainfall events with climate change, major flooding events are expected to increase in many regions of the world. However, there is uncertainty about the effect of different flooding regimes and the importance of flood timing in structuring riverine habitats and their associated biotic communities. In addition, our understanding of community response is hindered by a lack of long‐term datasets to evaluate river ecosystem resilience to flooding. Here we show that in a river ecosystem studied for 30 years, a major winter flood reset the invertebrate community to a community similar to one that existed 15 years earlier. The community had not recovered to the preflood state when recurrent summer flooding 9 years later reset the ecosystem back to an even earlier community. Total macroinvertebrate density was reduced in the winter flood by an order of magnitude more than the summer flood. Meiofaunal invertebrates were more resilient to the flooding than macroinvertebrates, possibly due to their smaller body size facilitating greater access to in‐stream refugia. Pacific pink salmon escapement was markedly affected by the winter flood when eggs were developing in redds, compared to summer flooding, which occurred before the majority of eggs were laid. Our findings inform a proposed conceptual model of three possible responses to flooding by the invertebrate community in terms of switching to different states and effects on resilience to future flooding events. In a changing climate, understanding these responses is important for river managers to mitigate the biological impacts of extreme flooding effects. Article in Journal/Newspaper Pink salmon Directory of Open Access Journals: DOAJ Articles Pacific Ecology and Evolution 8 16 8354 8363 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate change extreme floods macroinvertebrates meiofauna recovery resilience Ecology QH540-549.5 |
spellingShingle |
climate change extreme floods macroinvertebrates meiofauna recovery resilience Ecology QH540-549.5 Alexander M. Milner Jessica L. Picken Megan J. Klaar Anne L. Robertson Leonie R. Clitherow Lawrence Eagle Lee E. Brown River ecosystem resilience to extreme flood events |
topic_facet |
climate change extreme floods macroinvertebrates meiofauna recovery resilience Ecology QH540-549.5 |
description |
Abstract Floods have a major influence in structuring river ecosystems. Considering projected increases in high‐magnitude rainfall events with climate change, major flooding events are expected to increase in many regions of the world. However, there is uncertainty about the effect of different flooding regimes and the importance of flood timing in structuring riverine habitats and their associated biotic communities. In addition, our understanding of community response is hindered by a lack of long‐term datasets to evaluate river ecosystem resilience to flooding. Here we show that in a river ecosystem studied for 30 years, a major winter flood reset the invertebrate community to a community similar to one that existed 15 years earlier. The community had not recovered to the preflood state when recurrent summer flooding 9 years later reset the ecosystem back to an even earlier community. Total macroinvertebrate density was reduced in the winter flood by an order of magnitude more than the summer flood. Meiofaunal invertebrates were more resilient to the flooding than macroinvertebrates, possibly due to their smaller body size facilitating greater access to in‐stream refugia. Pacific pink salmon escapement was markedly affected by the winter flood when eggs were developing in redds, compared to summer flooding, which occurred before the majority of eggs were laid. Our findings inform a proposed conceptual model of three possible responses to flooding by the invertebrate community in terms of switching to different states and effects on resilience to future flooding events. In a changing climate, understanding these responses is important for river managers to mitigate the biological impacts of extreme flooding effects. |
format |
Article in Journal/Newspaper |
author |
Alexander M. Milner Jessica L. Picken Megan J. Klaar Anne L. Robertson Leonie R. Clitherow Lawrence Eagle Lee E. Brown |
author_facet |
Alexander M. Milner Jessica L. Picken Megan J. Klaar Anne L. Robertson Leonie R. Clitherow Lawrence Eagle Lee E. Brown |
author_sort |
Alexander M. Milner |
title |
River ecosystem resilience to extreme flood events |
title_short |
River ecosystem resilience to extreme flood events |
title_full |
River ecosystem resilience to extreme flood events |
title_fullStr |
River ecosystem resilience to extreme flood events |
title_full_unstemmed |
River ecosystem resilience to extreme flood events |
title_sort |
river ecosystem resilience to extreme flood events |
publisher |
Wiley |
publishDate |
2018 |
url |
https://doi.org/10.1002/ece3.4300 https://doaj.org/article/81b304a1815d41e9a01bb3ffefce6186 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_source |
Ecology and Evolution, Vol 8, Iss 16, Pp 8354-8363 (2018) |
op_relation |
https://doi.org/10.1002/ece3.4300 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.4300 https://doaj.org/article/81b304a1815d41e9a01bb3ffefce6186 |
op_doi |
https://doi.org/10.1002/ece3.4300 |
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Ecology and Evolution |
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8 |
container_issue |
16 |
container_start_page |
8354 |
op_container_end_page |
8363 |
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