Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate
Abstract Increased flood magnitude and frequency due to climate change can reduce the population productivity of organisms such as amphibian and fish species in river and stream systems; therefore, conserving habitats that maintain high productivity under such conditions is crucial. Here, we examine...
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crwiley:10.1111/fwb.14217 2024-06-02T08:12:43+00:00 Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate Yamada, Taihei Urabe, Hirokazu Nakamura, Futoshi Japan Society for the Promotion of Science Japan Science and Technology Agency 2024 http://dx.doi.org/10.1111/fwb.14217 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/fwb.14217 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.14217 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 69, issue 3, page 376-386 ISSN 0046-5070 1365-2427 journal-article 2024 crwiley https://doi.org/10.1111/fwb.14217 2024-05-03T10:48:37Z Abstract Increased flood magnitude and frequency due to climate change can reduce the population productivity of organisms such as amphibian and fish species in river and stream systems; therefore, conserving habitats that maintain high productivity under such conditions is crucial. Here, we examined the relationship between the freshwater productivity of anadromous salmonids (measured as fry migrating to the ocean per spawner) and catchment hydrogeomorphology and identified the characteristics of rivers and streams that are prone to flood disturbance. We surveyed the spawner abundance and number of fry of pink salmon ( Oncorhynchus gorbuscha ) and measured environmental factors, including the average catchment slope and stream power, as characteristics of hydrogeomorphology, in 10 streams in the Shiretoko Peninsula, northern Japan. We then used generalised linear mixed models to predict the freshwater productivity of pink salmon populations in each catchment across the study region under current and future climatic conditions. The productivity of pink salmon in the study region differed among the sampled catchments and was negatively affected by the average catchment slope, stream power, and maximum daily precipitation averaged over the catchment. Namely, flood disturbance reduced the freshwater productivity of pink salmon, and salmon productivity in individual catchments was explained by catchment hydrogeomorphology. The predicted future productivity with increased precipitation was also lower than the current productivity. Our approach can be applied to other salmonids that have similar spawning behaviour to pink salmon. Highly productive catchments under the future climatic conditions predicted by the present study should be prioritised for conservation to ensure a sustainable salmonid population. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Wiley Online Library Freshwater Biology 69 3 376 386 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Increased flood magnitude and frequency due to climate change can reduce the population productivity of organisms such as amphibian and fish species in river and stream systems; therefore, conserving habitats that maintain high productivity under such conditions is crucial. Here, we examined the relationship between the freshwater productivity of anadromous salmonids (measured as fry migrating to the ocean per spawner) and catchment hydrogeomorphology and identified the characteristics of rivers and streams that are prone to flood disturbance. We surveyed the spawner abundance and number of fry of pink salmon ( Oncorhynchus gorbuscha ) and measured environmental factors, including the average catchment slope and stream power, as characteristics of hydrogeomorphology, in 10 streams in the Shiretoko Peninsula, northern Japan. We then used generalised linear mixed models to predict the freshwater productivity of pink salmon populations in each catchment across the study region under current and future climatic conditions. The productivity of pink salmon in the study region differed among the sampled catchments and was negatively affected by the average catchment slope, stream power, and maximum daily precipitation averaged over the catchment. Namely, flood disturbance reduced the freshwater productivity of pink salmon, and salmon productivity in individual catchments was explained by catchment hydrogeomorphology. The predicted future productivity with increased precipitation was also lower than the current productivity. Our approach can be applied to other salmonids that have similar spawning behaviour to pink salmon. Highly productive catchments under the future climatic conditions predicted by the present study should be prioritised for conservation to ensure a sustainable salmonid population. |
author2 |
Japan Society for the Promotion of Science Japan Science and Technology Agency |
format |
Article in Journal/Newspaper |
author |
Yamada, Taihei Urabe, Hirokazu Nakamura, Futoshi |
spellingShingle |
Yamada, Taihei Urabe, Hirokazu Nakamura, Futoshi Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
author_facet |
Yamada, Taihei Urabe, Hirokazu Nakamura, Futoshi |
author_sort |
Yamada, Taihei |
title |
Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
title_short |
Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
title_full |
Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
title_fullStr |
Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
title_full_unstemmed |
Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
title_sort |
pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1111/fwb.14217 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/fwb.14217 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.14217 |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Freshwater Biology volume 69, issue 3, page 376-386 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fwb.14217 |
container_title |
Freshwater Biology |
container_volume |
69 |
container_issue |
3 |
container_start_page |
376 |
op_container_end_page |
386 |
_version_ |
1800759242449223680 |