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...
Published in: | Ecology and Evolution |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ece3.4300 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4300 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4300 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4300 |
id |
crwiley:10.1002/ece3.4300 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ece3.4300 2024-09-15T18:30:35+00:00 River ecosystem resilience to extreme flood events Milner, Alexander M. Picken, Jessica L. Klaar, Megan J. Robertson, Anne L. Clitherow, Leonie R. Eagle, Lawrence Brown, Lee E. Natural Environment Research Council Royal Society 2018 http://dx.doi.org/10.1002/ece3.4300 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4300 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4300 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4300 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 8, issue 16, page 8354-8363 ISSN 2045-7758 2045-7758 journal-article 2018 crwiley https://doi.org/10.1002/ece3.4300 2024-08-27T04:26:14Z 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 Wiley Online Library Ecology and Evolution 8 16 8354 8363 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
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. |
author2 |
Natural Environment Research Council Royal Society |
format |
Article in Journal/Newspaper |
author |
Milner, Alexander M. Picken, Jessica L. Klaar, Megan J. Robertson, Anne L. Clitherow, Leonie R. Eagle, Lawrence Brown, Lee E. |
spellingShingle |
Milner, Alexander M. Picken, Jessica L. Klaar, Megan J. Robertson, Anne L. Clitherow, Leonie R. Eagle, Lawrence Brown, Lee E. River ecosystem resilience to extreme flood events |
author_facet |
Milner, Alexander M. Picken, Jessica L. Klaar, Megan J. Robertson, Anne L. Clitherow, Leonie R. Eagle, Lawrence Brown, Lee E. |
author_sort |
Milner, Alexander M. |
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 |
http://dx.doi.org/10.1002/ece3.4300 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4300 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4300 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4300 |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_source |
Ecology and Evolution volume 8, issue 16, page 8354-8363 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.4300 |
container_title |
Ecology and Evolution |
container_volume |
8 |
container_issue |
16 |
container_start_page |
8354 |
op_container_end_page |
8363 |
_version_ |
1810472044450545664 |