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Environmental heterogeneity enhances transfer efficiency in a model of the food chain from plankton to fish
https://oacis.repo.nii.ac.jp/records/2550
https://oacis.repo.nii.ac.jp/records/25506060c0bc-be6d-4005-bfef-44847eb3c466
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-09-26 | |||||
タイトル | ||||||
タイトル | Environmental heterogeneity enhances transfer efficiency in a model of the food chain from plankton to fish | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Heterogeneity, Higher trophic-level, Closure modeling, Fish, Transfer efficiency | |||||
資源タイプ | ||||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
著者 |
Priyadarshi, Anupam
× Priyadarshi, Anupam× Chandra, Ram× S. Lan, Smith× Yamazaki, Hidekatsu |
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書誌情報 |
Journal of Marine Systems 巻 220, p. 103555, 発行日 2021-08 |
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抄録 | ||||||
内容記述 | Conventionally, food web models have been developed based on the mean-field approach ignoring small-scale spatial variability. The closure modeling approach, which accounts for both fluctuations and spatial means, is an effective way to model the impact of heterogeneity on plankton ecosystem dynamics. The hypothesis “Environmental Heterogeneity (EH) supports higher trophic levels in plankton ecosystems and may sustain biodiversity” was previously proposed based on the analysis of NP, NPZ and NPZD plankton models. The present study extends previous results by analyzing a nutrient-phytoplankton-zooplankton-fish model, and finds support for the hypothesis that EH enlarges the parameter domain for stable solutions, which may promote coexistence. This study shows how top-down dynamics may influence both biomass and production ratios along the food chain, altering the trophic structure and transfer efficiency to higher trophic levels. The lower-trophic transfer efficiency (from P to Z) (TEPZ) decreases (increases) with increasing EH in the presence (absence) of fish while higher-trophic transfer efficiency from Z to F (TEZF) increases with the level of heterogeneity. These results suggest that previously under-appreciated micro-scale heterogeneity may explain how the low mean-field biomass of zooplankton often observed in oligotrophic waters is able to support the growth of larval fish. |
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内容記述 | ||||||
内容記述 | 公開日: 2023-05-08 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0924-7963 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10775411 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.jmarsys.2021.103555 | |||||
権利 | ||||||
権利情報 | (c) 2021 Elsevier B.V.. This is the author's version of the work. It is posted here for your personal use. Not for redistribution. The definitive Version of Record was published in https://doi.org/10.1016/j.jmarsys.2021.103555 | |||||
情報源 | ||||||
関連識別子 | https://www.sciencedirect.com/science/article/am/pii/S0924796321000531 | |||||
関連名称 | Author's Accepted Manuscript Version/PDF (Available on: 2023-05-08) | |||||
情報源 | ||||||
関連識別子 | https://www.elsevier.com/ja-jp | |||||
関連名称 | Elsevier B.V. | |||||
出版者 | ||||||
出版者 | Elsevier B.V. |