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dc.contributor.author | Suzuki, K. W. | en |
dc.contributor.author | Ueda, H. | en |
dc.contributor.author | Nakayama, K. | en |
dc.contributor.author | Tanaka, M. | en |
dc.contributor.alternative | 鈴木, 啓太 | ja |
dc.date.accessioned | 2015-09-11T07:53:51Z | - |
dc.date.available | 2015-09-11T07:53:51Z | - |
dc.date.issued | 2013-09-26 | - |
dc.identifier.issn | 0142-7873 | - |
dc.identifier.uri | http://hdl.handle.net/2433/199858 | - |
dc.description.abstract | To improve our understanding of high copepod productivity in the estuarine turbidity maximum (ETM) of the macrotidal Chikugo River estuary in southwestern Japan, we determined stable carbon isotope ratios (δ[13]C) in the sympatric oligohaline copepods Sinocalanus sinensis andPseudodiaptomus inopinus from 2005 to 2006. Terrestrial-plant and phytoplankton detritus always accumulated in the ETM (salinity 0.1–3), whereas outside the ETM phytoplankton dominated especially in the warm season (>20°C). In contrast to the year-round concentration of S. sinensisin the ETM, P. inopinus occurred widely along the upper estuary under phytoplankton-dominated conditions. Terrestrial-plant detritus was characterized by relatively constant δ[13]C (∼−24‰), suggesting that significant spatiotemporal variability in copepod δ[13]C was attributable to the feeding of copepods on phytoplankton and/or its detritus. Both copepods had relatively depleted δ[13]C values in the ETM, reflecting δ[13]C in freshwater/oligohaline phytoplankton ( < −24‰). However, relatively enriched δ[13]C values (>−24‰) associated with meso/polyhaline phytoplankton downstream from the ETM were found only in P. inopinus. Although the contribution of terrestrial-plant detritus to copepod production remains to be determined, our results indicate that both copepods selectively utilize freshwater/oligohaline phytoplankton and/or its detritus in the ETM, whereas only P. inopinus utilizes meso/polyhaline phytoplankton downstream from the ETM. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Oxford University Press | en |
dc.rights | This article has been accepted for publication in "Journal of Plankton Research" © The Author 2013. Published by Oxford University Press. All rights reserved. | en |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.subject | copepod | en |
dc.subject | estuarine turbidity maximum | en |
dc.subject | Pseudodiaptomus inopinus | en |
dc.subject | salinity | en |
dc.subject | Sinocalanus sinensis | en |
dc.title | Spatiotemporal dynamics of stable carbon isotope ratios in two sympatric oligohaline copepods in relation to the estuarine turbidity maximum (Chikugo River, Japan): implications for food sources | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Journal of Plankton Research | en |
dc.identifier.volume | 36 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 461 | - |
dc.identifier.epage | 474 | - |
dc.relation.doi | 10.1093/plankt/fbt094 | - |
dc.textversion | author | - |
dc.startdate.bitstreamsavailable | 2014-09-27 | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
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