دورية أكاديمية
Microbial functional structure and stable isotopic variation of leptocephali across three current zones in the western South Pacific
| العنوان: | Microbial functional structure and stable isotopic variation of leptocephali across three current zones in the western South Pacific |
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| المؤلفون: | Ghinter, Leopold, Dupuy, Christine, Miller, Michael, J, Carpentier, Alexandre, Lefrançois, Christel, Acou, Anthony, Aoyama, Jun, Kuroki, Mari, Liénart, Camilla, Watanabe, Shun, Tsukamoto, Katsumi, Otake, Tsuguo, Feunteun, Eric |
| المساهمون: | LIttoral ENvironnement et Sociétés (LIENSs), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS), Université du Québec à Rimouski (UQAR), Nihon University, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Université de Rennes (UR), Patrimoine naturel (PatriNat), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Office français de la biodiversité (OFB), The University of Tokyo (UTokyo), Stockholm University, Kindai University |
| المصدر: | ISSN: 0079-6611 ; Progress in Oceanography ; https://univ-rennes.hal.science/hal-02518761Test ; Progress in Oceanography, 2020, 182, pp.102264. ⟨10.1016/j.pocean.2020.102264⟩. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2020 |
| المجموعة: | HAL - Université de La Rochelle |
| مصطلحات موضوعية: | Western South Pacific, Leptocephali, Meso-macro-zooplankton, Micronekton, POM, Isotopic signature, Microbial loop, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
| الوصف: | International audience ; The ecology of leptocephali remains poorly known but they appear to feed on marine snow that can vary spatially and temporally according to the food web dynamics. This study provided new information about the position of leptocephali within the functional structure of microbial plankton and other food web components of the western South Pacific (WSP) region at a large geographic scale including the New Caledonia, Fiji, and Samoa islands. The hydrographic structure varied with latitude, and nutrient levels were generally low but somewhat variable. Stable isotopic signatures were examined in relation to the 3 current zones of the eastward flowing South Equatorial Countercurrent (SECC; north), the westward South Equatorial Current (SEC; mid-latitudes), and the eastward South Tropical Countercurrent (STCC; south), and all zones were found to be primarily based on a heterotrophic planktonic functioning that were co-limited by inorganic nitrogen and phosphorus, with biomasses of planktonic groups varying with depth. Isotopic signatures of leptocephali were compared to the signatures of other mesozoplankton, micronekton, and Trichodesmium components of the food web, and in relation to the signatures of particulate organic matter (POM) that varied among the 3 collection depths. The isotopic signatures of six taxa of leptocephali, other taxonomic groups and POM showed interesting variability according to latitude and among some stations. The presence of Trichodesmium at the surface in the STCC zone influenced the isotopic signatures of POM and thus the signatures of leptocephali. The signatures of leptocephali were therefore linked with the overall food web and were consistent with the larvae feeding on marine snow components of POM. The two apparent groups of leptocephali with different isotopic signatures that have also been observed in other oceanic areas may be explained by feeding behavior at different depths or on different types of marine snow.Highlights:- Western South Pacific microbial ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-02518761; https://univ-rennes.hal.science/hal-02518761Test; https://univ-rennes.hal.science/hal-02518761/documentTest; https://univ-rennes.hal.science/hal-02518761/file/Ghinter%20et%20al-2020-Microbial%20functional%20structure%20and%20stable%20isotopic%20variation%20of%20leptocephali.pdfTest |
| DOI: | 10.1016/j.pocean.2020.102264 |
| الإتاحة: | https://doi.org/10.1016/j.pocean.2020.102264Test https://univ-rennes.hal.science/hal-02518761Test https://univ-rennes.hal.science/hal-02518761/documentTest https://univ-rennes.hal.science/hal-02518761/file/Ghinter%20et%20al-2020-Microbial%20functional%20structure%20and%20stable%20isotopic%20variation%20of%20leptocephali.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.51CB6C9E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.pocean.2020.102264 |
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