Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)

Historically Saccharina spp. beds occurred along the west coast of Hokkaido, an oligotrophic area, and were commercially exploited. Currently extensive commercial Saccharina spp. beds do not form due to nutrient limitations. Here, we postulate that nutrients assimilated by paleo-Saccharina spp. beds...

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Published in:PLOS ONE
Main Authors: Kuribayashi, Takanori, Abe, Tsuyoshi, Montani, Shigeru
Format: Article in Journal/Newspaper
Language:English
Published: PLOS
Subjects:
660
Online Access:http://hdl.handle.net/2115/67133
https://doi.org/10.1371/journal.pone.0180760
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spelling fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/67133 2023-05-15T17:52:40+02:00 Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido) Kuribayashi, Takanori Abe, Tsuyoshi Montani, Shigeru http://hdl.handle.net/2115/67133 https://doi.org/10.1371/journal.pone.0180760 eng eng PLOS http://hdl.handle.net/2115/67133 PLoS ONE, 12(7): e0180760 http://dx.doi.org/10.1371/journal.pone.0180760 http://creativecommons.org/licenses/by/4.0/ CC-BY 660 article fthokunivhus https://doi.org/10.1371/journal.pone.0180760 2022-11-18T01:04:25Z Historically Saccharina spp. beds occurred along the west coast of Hokkaido, an oligotrophic area, and were commercially exploited. Currently extensive commercial Saccharina spp. beds do not form due to nutrient limitations. Here, we postulate that nutrients assimilated by paleo-Saccharina spp. beds may have been derived from spawning herrings (Clupea pallasii) acting as organisms that formed a vector from their feeding grounds (Okhotsk Sea and Pacific Ocean) to their spawning area (west coast of Hokkaido, Japan Sea). To test this hypothesis we examined stable nitrogen isotope ratios (delta N-15) of 100-to 135-year-old Saccharina specimens preserved at the Herbarium (Hokkaido University Museum). delta(15) N values of the paleo-Saccharina specimens collected from this region were in the range of 10%, which is significantly higher than the current 3-7% in freshly sampled Saccharina spp. This high delta(15) N indicates that spawning herring (Clupea pallasii) had potentially been a significant source of dissolved inorganic nitrogen (DIN) absorbed by Saccharina, acting as an organism forming a vector for transporting nutrients from eutrophic to oligotrophic coastal ecosystems. Our findings support the hypothesis of so-called "herring-derived nutrients. Article in Journal/Newspaper okhotsk sea Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Okhotsk Pacific PLOS ONE 12 7 e0180760
institution Open Polar
collection Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
op_collection_id fthokunivhus
language English
topic 660
spellingShingle 660
Kuribayashi, Takanori
Abe, Tsuyoshi
Montani, Shigeru
Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)
topic_facet 660
description Historically Saccharina spp. beds occurred along the west coast of Hokkaido, an oligotrophic area, and were commercially exploited. Currently extensive commercial Saccharina spp. beds do not form due to nutrient limitations. Here, we postulate that nutrients assimilated by paleo-Saccharina spp. beds may have been derived from spawning herrings (Clupea pallasii) acting as organisms that formed a vector from their feeding grounds (Okhotsk Sea and Pacific Ocean) to their spawning area (west coast of Hokkaido, Japan Sea). To test this hypothesis we examined stable nitrogen isotope ratios (delta N-15) of 100-to 135-year-old Saccharina specimens preserved at the Herbarium (Hokkaido University Museum). delta(15) N values of the paleo-Saccharina specimens collected from this region were in the range of 10%, which is significantly higher than the current 3-7% in freshly sampled Saccharina spp. This high delta(15) N indicates that spawning herring (Clupea pallasii) had potentially been a significant source of dissolved inorganic nitrogen (DIN) absorbed by Saccharina, acting as an organism forming a vector for transporting nutrients from eutrophic to oligotrophic coastal ecosystems. Our findings support the hypothesis of so-called "herring-derived nutrients.
format Article in Journal/Newspaper
author Kuribayashi, Takanori
Abe, Tsuyoshi
Montani, Shigeru
author_facet Kuribayashi, Takanori
Abe, Tsuyoshi
Montani, Shigeru
author_sort Kuribayashi, Takanori
title Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)
title_short Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)
title_full Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)
title_fullStr Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)
title_full_unstemmed Historical delta(15) N records of Saccharina specimens from oligotrophic waters of Japan Sea (Hokkaido)
title_sort historical delta(15) n records of saccharina specimens from oligotrophic waters of japan sea (hokkaido)
publisher PLOS
url http://hdl.handle.net/2115/67133
https://doi.org/10.1371/journal.pone.0180760
geographic Okhotsk
Pacific
geographic_facet Okhotsk
Pacific
genre okhotsk sea
genre_facet okhotsk sea
op_relation http://hdl.handle.net/2115/67133
PLoS ONE, 12(7): e0180760
http://dx.doi.org/10.1371/journal.pone.0180760
op_rights http://creativecommons.org/licenses/by/4.0/
op_rightsnorm CC-BY
op_doi https://doi.org/10.1371/journal.pone.0180760
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