Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon
Summary P acific salmon ( O ncorhynchus spp.) transport marine‐derived nutrients ( MDN ) and organic matter to freshwater ecosystems, which enhances the productivity of N orth P acific ecosystems. Relatively few studies, however, have evaluated the MDN subsidy to both the aquatic system and the terr...
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Online Access: | http://dx.doi.org/10.1111/fwb.12175 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12175 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12175 |
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crwiley:10.1111/fwb.12175 2024-06-02T08:13:18+00:00 Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon Koshino, Yosuke Kudo, Hideaki Kaeriyama, Masahide 2013 http://dx.doi.org/10.1111/fwb.12175 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12175 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12175 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 58, issue 9, page 1864-1877 ISSN 0046-5070 1365-2427 journal-article 2013 crwiley https://doi.org/10.1111/fwb.12175 2024-05-03T11:56:52Z Summary P acific salmon ( O ncorhynchus spp.) transport marine‐derived nutrients ( MDN ) and organic matter to freshwater ecosystems, which enhances the productivity of N orth P acific ecosystems. Relatively few studies, however, have evaluated the MDN subsidy to both the aquatic system and the terrestrial catchment simultaneously. Using stable isotope analysis, we tested how the dynamics of MDN differed between the river and adjacent riparian forest in rivers of the S hiretoko W orld N atural H eritage S ite in eastern H okkaido ( J apan). In addition, we accounted for temporal and spatial variations in the stable isotope signatures of freshwater organisms due to the presence or absence of spawning salmon. We analysed carbon and nitrogen stable isotopes (δ 13 C and δ 15 N ) of biofilm, invertebrates, fish, riparian plants and brown bear ( U rsus arctos ) in the R usha R iver during the pre‐spawning and spawning periods and in the A kai R iver (where there are no salmon). W illow leaves were collected along the 50‐m transects to evaluate how far MDN are incorporated within the riparian area. We counted the number of pink salmon ( O . gorbuscha ) carcasses in riparian areas and categorised their mode of transport. In addition, we examined the stomach contents of D olly V arden ( S alvelinus malma ). The δ 13 C and δ 15 N of aquatic organisms increased by 1–4‰ and 1–6‰, respectively, with the arrival of salmon spawners. Aquatic organisms incorporated 23% of their nitrogen from salmon (range: 7–46%). The diet of D olly V arden switched from aquatic invertebrates to salmon eggs during the salmon spawning run. More salmon carcasses were transported from the stream to riparian areas by flooding than by brown bears. The δ 13 C and δ 15 N of blowflies ( C alliphora spp.) and brown bears increased significantly during the spawning run. Riparian vegetation, with the exception of M anchurian alder ( A lnus hirsuta ), incorporated 25% of its nitrogen from salmon. The δ 15 N values of riparian willow ( S alix spp.) were ... Article in Journal/Newspaper Pink salmon Wiley Online Library Arden ENVELOPE(24.917,24.917,-72.250,-72.250) Pacific Freshwater Biology 58 9 1864 1877 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Summary P acific salmon ( O ncorhynchus spp.) transport marine‐derived nutrients ( MDN ) and organic matter to freshwater ecosystems, which enhances the productivity of N orth P acific ecosystems. Relatively few studies, however, have evaluated the MDN subsidy to both the aquatic system and the terrestrial catchment simultaneously. Using stable isotope analysis, we tested how the dynamics of MDN differed between the river and adjacent riparian forest in rivers of the S hiretoko W orld N atural H eritage S ite in eastern H okkaido ( J apan). In addition, we accounted for temporal and spatial variations in the stable isotope signatures of freshwater organisms due to the presence or absence of spawning salmon. We analysed carbon and nitrogen stable isotopes (δ 13 C and δ 15 N ) of biofilm, invertebrates, fish, riparian plants and brown bear ( U rsus arctos ) in the R usha R iver during the pre‐spawning and spawning periods and in the A kai R iver (where there are no salmon). W illow leaves were collected along the 50‐m transects to evaluate how far MDN are incorporated within the riparian area. We counted the number of pink salmon ( O . gorbuscha ) carcasses in riparian areas and categorised their mode of transport. In addition, we examined the stomach contents of D olly V arden ( S alvelinus malma ). The δ 13 C and δ 15 N of aquatic organisms increased by 1–4‰ and 1–6‰, respectively, with the arrival of salmon spawners. Aquatic organisms incorporated 23% of their nitrogen from salmon (range: 7–46%). The diet of D olly V arden switched from aquatic invertebrates to salmon eggs during the salmon spawning run. More salmon carcasses were transported from the stream to riparian areas by flooding than by brown bears. The δ 13 C and δ 15 N of blowflies ( C alliphora spp.) and brown bears increased significantly during the spawning run. Riparian vegetation, with the exception of M anchurian alder ( A lnus hirsuta ), incorporated 25% of its nitrogen from salmon. The δ 15 N values of riparian willow ( S alix spp.) were ... |
format |
Article in Journal/Newspaper |
author |
Koshino, Yosuke Kudo, Hideaki Kaeriyama, Masahide |
spellingShingle |
Koshino, Yosuke Kudo, Hideaki Kaeriyama, Masahide Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon |
author_facet |
Koshino, Yosuke Kudo, Hideaki Kaeriyama, Masahide |
author_sort |
Koshino, Yosuke |
title |
Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon |
title_short |
Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon |
title_full |
Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon |
title_fullStr |
Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon |
title_full_unstemmed |
Stable isotope evidence indicates the incorporation into Japanese catchments of marine‐derived nutrients transported by spawning Pacific Salmon |
title_sort |
stable isotope evidence indicates the incorporation into japanese catchments of marine‐derived nutrients transported by spawning pacific salmon |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/fwb.12175 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12175 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12175 |
long_lat |
ENVELOPE(24.917,24.917,-72.250,-72.250) |
geographic |
Arden Pacific |
geographic_facet |
Arden Pacific |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_source |
Freshwater Biology volume 58, issue 9, page 1864-1877 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fwb.12175 |
container_title |
Freshwater Biology |
container_volume |
58 |
container_issue |
9 |
container_start_page |
1864 |
op_container_end_page |
1877 |
_version_ |
1800736757815181312 |