A5061531220- Methane Hydrates and Related Phenomena
- Arctic and Antarctic ice dynamics
- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Marine and fisheries research
- Underwater Acoustics Research
- Marine Biology and Ecology Research
- Ocean Acidification Effects and Responses
- Marine and Coastal Research
- Geology and Paleoclimatology Research
- Marine Bivalve and Aquaculture Studies
- Marine Ecology and Invasive Species
- Maritime Navigation and Safety
- Isotope Analysis in Ecology
- Geochemistry and Elemental Analysis
- Geological formations and processes
- Water Quality Monitoring Technologies
- Underwater Vehicles and Communication Systems
- Cephalopods and Marine Biology
- Coral and Marine Ecosystems Studies
- International Maritime Law Issues
UiT The Arctic University of Norway
2020-2025
Max Planck Institute for Marine Microbiology
2020-2024
Centre for Arctic Gas Hydrate, Environment and Climate
2021-2022
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2022
GEOMAR Helmholtz Centre for Ocean Research Kiel
2021
The decrease in Arctic sea-ice extent and thickness as a result of global warming will impact the timing, duration, magnitude composition phytoplankton production with cascading effects on marine food-webs biogeochemical cycles. Here, we elucidate environmental drivers shaping composition, abundance, biomass, trophic state vertical flux protists (unicellular eukaryotes), including phytoplankton, Barents Sea late August 2018 2019. two years were characterized by contrasting conditions. In...
The northern Barents Sea is a productive Arctic inflow shelf with seasonal ice cover and as such, location an efficient downward export of particulate organic matter through the biological carbon pump.The region under strong influence Atlantification sea-ice decline, resulting in longer open water summer period. In order to understand how these processes pump, it important identify spatial dynamics vertical flux matter. 2019 2021, short-term sediment traps were deployed between 30 200m depth...
Abstract. Particulate (POM) and dissolved (DOM) organic matter in the ocean are important components of Earth's biogeochemical cycle. The two a constant state dynamic change as result physical biochemical processes; however, they mostly treated distinct entities, separated operationally by filter. We studied seasonal transition DOM POM pools their drivers sub-Arctic fjord means monthly environmental sampling performing experiments at selected time points. For experiments, surface water (5 m)...
Abstract The Arctic Ocean north of Svalbard has recently experienced large sea ice losses and the increasing prominence Atlantic water (AW) advection. To investigate impact these ongoing changes on annual particle export, two moorings with sequential sediment traps were deployed in ice‐free seasonally ice‐covered waters shelf (NSv) east (ESv) Svalbard, collecting sinking particles nearly continuously from October 2017 to 2018. Vertical export particulate organic carbon (POC), total matter...
Arctic marine ecosystems are becoming more boreal due to climate change. Predictions of ecosystem change focus mainly on inflow or interior shelves, with few comprehensive studies outflow regions. During September–October 2017, soft-bottom communities were sampled and benthic processes quantified at 12 stations the Northeast Greenland shelf (outflow shelf) compared last regional study, conducted in 1992 1993. The habitat was characterized terms sediment granulometry, pigment concentrations,...
Abstract. Particulate (POM) and dissolved (DOM) organic matter in the ocean are important components of Earth’s biogeochemical cycle constant dynamic change through physical biochemical processes. However, they mostly treated as two distinct entities, separated operationally by a filter. We studied transition between DOM POM pools its drivers different seasons sub-Arctic fjord monthly environmental sampling performing aggregation-dissolution experiments. For experiments, surface water (5 m)...
Graphical abstractAbstractImaging underwater can be particularly problematic and expensive given the harsh environmental conditions posed by salinity for some deployments, pressure. To counter these difficulties, waterproof pressure resistant housings are often used, commonly built from materials such as titanium, if intended long duration deployments. Further, investigations benefit replicate data collection, which additionally increases study costs.In this paper we present a new camera...
The Nansen Legacy Q3 cruise, 5-27 August 2019, initiated the seasonal investigations of transect. transect represent an environmental gradient going through northern Barents Sea, and included 7 process stations (P1-P7) lasting 6-53 hrs. CTD were taken to increase hydrographic resolution on program measurements sampling from atmosphere, sea ice, ocean floor. Data collected ranged physical observations, chemical, biological geological data collection, aim was link observations improve our...
The spring season was the target for Nansen Legacy cruise organized in late April and first half of May 2021 following transect defined this series cruises to capture variations year sampling physical, biological chemical conditions ice sea. went through both open water ice. Seven process stations were visited (P1 P7) together with smaller NLEG according program seasonal investigations. station (P1) waters, while remaining six main had coverage varying degree. Each lasted 24 hours or more...
This cruise was the second of in total four seasonal cruises with RV Kronprins Haakon 2019/20 focusing on biology project Arven etter Nansen (AeN). named Q4 (Q4= 4th quarter year) investigating 17 stations established AeN transect along 34 E Northern Barents Sea and adjacent Arctic Basin from 76 to 82°N (see Fig. 1 below). The addressed objectives research foci RF1 Physical drivers, RF2 Human RF3 living RA-C Technology method development, collected a multitude data Legacy which ice covered...
Abstract Deep sea mining for poly-metallic nodules impacts the environment in many ways. A key potential hazard is creation of a sediment plume from resuspending during seabed mining. The resuspended matter disperses with currents but eventually resettles on seabed. Resettling causes blanketing seafloor environment, potentially causing harm to in-, epi- and hyperbenthic communities possible cascading effects into food webs deep habitats. Mapping extent such thus an important factor...