Abstract
Stable isotope analysis of nitrogen (δ15N) was applied to investigate the trophic ecology of the three chaetognath species inhabiting the Barents Sea (Parasagitta elegans, Eukrohnia hamata and Pseudosagitta maxima). For the first time, we provide detailed information on the inter- and intra-specific variability of their isotopic composition and trophic levels. Different size-related and depth-related trends were found among the studied species, which indicated differences in their feeding strategies.
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Acknowledgements
We are grateful to the researchers and crews onboard the vessels collecting the samples. We also acknowledge K. N. Kosobokova and A. K. Zalota (Shirshov Institute of Oceanology, RAS), K. M. Gorbatenko (Pacific branch of the “VNIRO”) and E. A. Pakhomov (University of British Columbia) for their constructive comments on the study. This work was supported by the Russian Science Foundation (grant No. 23-17-00121).
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Artemev, G.M. et al. (2023). Trophic Ecology of Chaetognaths in the Barents Sea Revealed by Nitrogen Stable Isotope Analysis (δ15N). In: Chaplina, T. (eds) Complex Investigation of the World Ocean (CIWO-2023). CIWO 2023. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-47851-2_24
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DOI: https://doi.org/10.1007/978-3-031-47851-2_24
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