Benthic, epibenthic and pelagic marine invertebrate specimens collected during PS136 in the Arctic Fram Strait in 2023 and their individual lipid profiles and bulk isotopes

During the expedition PS136 LTER HAUSGARTEN in 2023 105 samples of macrobenthic marine invertebrates and 3 samples of calanoid copepods were collected by epibenthic sledge and 28 samples of calanoid copepods were collected by Bongo and Multinet and subsequently frozen at -80 degrees Celsius for lipid and bulk stable isotope analyses. Katrin Linse, Saskia Brix, Jannifer Freer and Lydia Anastasia Schmidt collected, photographed and fixed the specimens on board. The macrobenthic invertebrates and calanoid copepods were collected to study elements of the biological lipid pump in the Arctic Ocean. The preparation and lab analyses of the lipid biomarker and stable isotope data were carried out by Rachel Jeffreys and Sabena Jane Blackbird at the University of Liverpool using Gas chromatography-mass spectrometry and an ECS8020 elemental analyser (NC Technologies) coupled to a Delta V isotope ratio mass spectrometer. Statistical analyses and interpretation of lipid biomarker and stable isotope data were carried out by Dewi Ford, Dan Mayor and Anna K. Wadsworth at the University of Exeter. The raw data files include lipid biomarker and stable isotope data for all analysed macrobenthic invertebrates and calanoid copepods, while the processed data files include all calanoid copepod data but selected macrobenthic taxa only, being Amphipoda, Decapoda, Isopoda, Mysidacea, Holothuroidea, Ophiuroidea, and Chaetognatha. The contributions of KL, JF and DJM were supported by the BIOPOLE National Capability Multicentre Round 2 funding from the Natural Environment Research Council (grant no. NE/W004933/1). DJM also received funding from OceanICU (EU Grant agreement ID: 101083922; UKRI grant reference: 10063673). SB received support via the Leibniz foundation and the ALONGate project (A Long-term Observatory of the North Atlantic Gateway to the Arctic Ocean) via grant number PS150/2023 in the program for women professors. The field work for PS136 was supported by grant no. AWI_PS136_01.