Environmental parameters of iron-enriched sediments at LTER HAUSGARTEN during POLARSTERN cruise PS93 ...

• Main Authors: Hasemann, Christiane, Soltwedel, Thomas
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Deep sea; Hausgarten; iron; meiofauna; Nematoda; sediments; Core; Latitude of event; Longitude of event; Latitude of event 2; Longitude of event 2; Gear; DATE/TIME; Depth, bathymetric; DEPTH, sediment/rock; Bacteria, cells; Iron; Water content, sediment; Sediment, ash free dry mass; Chlorophyll a; Phaeopigments; Chloroplastic pigment equivalents per volume; Remote operated vehicle; PS93.2; Polarstern; Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten; Arctic; Arctic Ocean; Svalbard; Fram Strait
• Online Access: https://dx.doi.org/10.1594/pangaea.956001; https://doi.pangaea.de/10.1594/PANGAEA.956001

Impact of Local Iron Enrichment on the Small Benthic Biota in the deep Arctic Ocean The study assesses the impact of local iron enrichment on the small benthic biota (bacteria, meiofauna) together with environmental parameters indicating the input of food at the deep seafloor. To evaluate the hypothesis that abundance, distribution, and diversity of the small benthic biota varies in relation to a local input of structural steel at the seabed, we analyzed sediment samples and the associated infauna along a short transect with increasing distance to an iron source, i.e., corroding steel weights of a free-falling observational platform (bottom-lander), lying on the seafloor for approximately seven years. Iron-enriched surface sediments in the vicinity of the bottom-weight left in summer 2008 after a short-term deployment of a bottom-lander in 2433 m water depth at the LTER (Long-Term Ecological Research) observation HAUSGARTEN in eastern parts of the Fram Strait were sampled on 28th July 2015 using push-corer ...