USAP-DC

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Carbon and nitrogen isotope data along a gradient at the Antarctic Peninsula Data DOI: https://doi.org/10.15784/601653 Cite as Iken, K. (2023) "Carbon and nitrogen isotope data along a gradient at the Antarctic Peninsula" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601653. AMD - DIF Record(s) USAP-1744550_1 Abstract The purpose of this dataset was to determine the importance of macroalgal primary producers to the coastal invertebrate food webs along a gradient of sites with increasing mean annual sea ice cover. This dataset contains the carbon and nitrogen stable isotope values, in addition to carbon and nitrogen content, of various coastal primary producers and invertebrate consumers from 15 stations along the Antarctic Peninsula from 64 to 69 degree latitude south collected in 2019. Primary producers included multiple species of macroalgae, particulate organic matter (POM) as a proxy of phytoplankton production, and benthic diatoms (where they occurred). Consumers included various benthic invertebrates of different feeding types, from suspension feeders (like sponges and ascidians) to predators/omnivores (like sea stars). Creator(s): Iken, Katrin Date Created: 2023-01-10 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: -68, East: -63, South: -69, North: -64.5 Award(s) NSF 1744602 Version: 1 Related Project(s) Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity Keywords Antarctic Peninsula Antarctica Biota Carbon Carbon Isotopes LMG1904 Nitrogen Isotopes Oceans