A5019329787- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Climate change and permafrost
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Polar Research and Ecology
- Marine Biology and Ecology Research
- Marine and coastal plant biology
- Ocean Acidification Effects and Responses
- Lichen and fungal ecology
- Microbial Community Ecology and Physiology
- Food Industry and Aquatic Biology
- Mercury impact and mitigation studies
- Atmospheric and Environmental Gas Dynamics
- Isotope Analysis in Ecology
- Offshore Engineering and Technologies
- Indigenous Studies and Ecology
- Toxic Organic Pollutants Impact
- Reservoir Engineering and Simulation Methods
- Recycling and Waste Management Techniques
- Water Quality Monitoring Technologies
- Geological Studies and Exploration
- Heavy metals in environment
- Microplastics and Plastic Pollution
Grønlands Naturinstitut
2016-2025
Ilisimatusarfik
2024
Asiaq Greenland Survey
2022
Université Laval
2015
Fisheries and Oceans Canada
2006-2010
Université du Québec à Rimouski
2008-2010
Mental Research Institute
2005
Abstract Accelerated mass loss from the Greenland ice sheet leads to glacier retreat and an increasing input of glacial meltwater fjords coastal waters around Greenland. These high latitude ecosystems are highly productive sustain important fisheries, yet it remains uncertain how they will respond future changes in Arctic cryosphere. Here we show that marine‐terminating glaciers play a crucial role sustaining productivity fjord ecosystems. Hydrographic biogeochemical data two systems...
Abstract. Freshwater discharge from glaciers is increasing across the Arctic in response to anthropogenic climate change, which raises questions about potential downstream effects marine environment. Whilst a combination of long-term monitoring programmes and intensive field campaigns have improved our knowledge glacier–ocean interactions recent years, especially with respect fjord/ocean circulation, there are extensive gaps concerning how affect biogeochemistry productivity. Following two...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 524:27-38 (2015) - DOI: https://doi.org/10.3354/meps11174 Seasonal and interannual phytoplankton production in a sub-Arctic tidewater outlet glacier fjord, SW Greenland Thomas Juul-Pedersen1,*, Kristine E. Arendt1, John Mortensen1, Martin Blicher1, Dorte H. Søgaard1,3, Søren Rysgaard1,2,4 1Greenland Climate...
Abstract. The Greenland Ice Sheet releases large amounts of freshwater, which strongly influences the physical and chemical properties adjacent fjord systems continental shelves. Glacial meltwater input is predicted to increase in future, but impact on carbonate dynamics these productive coastal remains largely unquantified. Here we present seasonal observations system over year 2013 surface waters a west (Godthåbsfjord) influenced by tidewater outlet glaciers. Our data reveal that layer...
Abstract The supply of freshwater to fjord systems in Greenland is increasing as a result climate change-induced acceleration ice sheet melt. However, insight into the marine implications melt water impaired by lack observations demonstrating fate along coast and providing evaluation basis for ocean models. Here we present 13 years summer measurements 120 km transect Young Sound, Northeast show that sub-surface coastal waters are decreasing salinity with an average rate 0.12 ± 0.05 per year....
Abstract The accelerated melt of the Greenland Ice Sheet has been linked to a sudden increase in presence warm subsurface coastal water west Greenland. Yet pathways along entire coast have remained largely unstudied. Here we present first, near‐synoptic hydrographic observations at both continental slope and fjord entrances system from Cape Farewell (59°N) Melville Bay (75°N) summer 2016. We observed distinct north‐south division mass distribution Greenland, approximately partitioned by...
Global warming accelerates melting of glaciers and increases the supply meltwater associated inorganic particles, nutrients, organic matter to adjacent coastal seas, but ecosystem impact is poorly resolved quantified. When delivered by glacial rivers, potential could be a reduction in light nutrient availability for primary producers while supplying allochthonous carbon heterotrophic processes, thereby tipping net community metabolism toward heterotrophy. To test this hypothesis, we...
Abstract Fjord systems are transition zones between land and sea, resulting in complex dynamic environments. They of particular interest the Arctic as they harbour ecosystems inhabited by a rich range species provide many societal benefits. The key drivers change European (i.e., Greenland, Svalbard, Northern Norway) fjord socio-ecological reviewed here, structured into five categories: cryosphere (sea ice, glacier mass balance, glacial riverine discharge), physics (seawater temperature,...
Abstract. Primary production on the coast and in Greenland fjords sustains important local sustenance fisheries. However, unprecedented melting of Ice Sheet (GrIS) is impacting coastal ocean, its effects fjord ecology remain understudied. It has been suggested that as glaciers retreat, primary regimes may be altered, rendering less productive. Here we investigate patterns productivity a northeast (Young Sound, 74∘ N), which receives run-off from GrIS via land-terminating glaciers. We...
Greenland's ice sheet is the second largest on Earth, and under threat from a warming Arctic climate. An increase in freshwater discharge Greenland has potential to strongly influence composition of adjacent water masses with impact marine ecosystems likely be found within glaciated fjords. Here we demonstrate that physical chemical estuarine processes large Greenlandic fjord are critical factors determining fate meltwater derived nutrients particles, especially for non-conservative elements...
The study presents data from a multi-year zooplankton sampling programme with year-round monthly in sub-Arctic fjord Greenland (Godthåbsfjord). A total of 56 groups were identified over 5 years, the copepod Microsetella norvegica dominating mesozooplankton community. was found to be very abundant (maximum abundance: 408 125 ± 161 387 nauplii m−3 and 91 995 6 864 copepodites m−3) make up, on average, 87% annual assemblage. There seasonal succession whereby Cirripedia dominated biomass March...
The land-to-ocean flux of organic carbon is increasing in glacierized regions response to temperatures the Arctic (Hood et al., 2015). In order understand ecosystem metabolism input it essential determine bioavailability different sources system. We quantified bacterial turnover a high fjord system (Young Sound, NE Greenland) during ice-free period (July-October 2014) and assessed quality quantity 3 major sources; 1) local phytoplankton production 2) runoff from land-terminating glaciers...
Around the Greenlandic and Antarctic coastlines, sediment plumes associated with glaciers are significant sources of lithogenic material to ocean. These contain elevated concentrations a range trace metals, especially in particle bound phases, but it is not clear how these particles affect dissolved (<0.2 µm) metal distributions Here we show, using transects 8 glacier fjords, trends distribution iron, cobalt, nickel copper (dFe, dCo, dNi, dCu). Following rapid dFe loss close outflows,...
Phytoplankton communities and production in Arctic fjords undergo strong seasonal variations. blooms are periods with high primary production, leading to elevated algal biomass fueling higher trophic levels. Blooms typically driven bottom-up by light nutrient availability but may also be top-down controlled grazing. While phytoplankton spring common across all systems, summer autumn their drivers less predictable. Here we compare the long-term (≥4 years) bloom phenology protist community...
Abstract. The accelerated warming of the Arctic manifests in sea ice loss and melting glaciers, significantly altering dynamics marine biota. This disruption ecosystems can lead to an increased emission biological ice-nucleating particles (INPs) from ocean into atmosphere. Once airborne, these INPs induce cloud droplet freezing, thereby affecting lifetime radiative properties. Despite potential atmospheric impacts INPs, their properties sources remain poorly understood. By analyzing bulk...
Community structure of pelagic copepods was investigated in the upper 200 m Disko Bay, Western Greenland, during post-spring bloom period June, 2001. This first study copepod community West Greenland coastal waters sampled using smaller mesh sizes (50 μm as opposed to μm). The mesozooplankton dominated by who constituted 82% total abundance and 95% biomass (>50 Nauplii Calanus, Pseudocalanus Oithona number copepodites adults were spp., Oncaea sp., harpacticoids, Calanus finmarchicus,C....
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 314:239-255 (2006) - doi:10.3354/meps314239 Sedimentation following spring bloom in Disko Bay, West Greenland, with special emphasis on role of copepods Thomas Juul-Pedersen1,2, Torkel Gissel Nielsen1,*, Christine Michel2, Eva Friis Møller1,3, Peter Tiselius4, Thor4, Michael Olesen5, Erik Selander4, Saskia...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 410:55-70 (2010) - DOI: https://doi.org/10.3354/meps08608 Sinking export of particulate organic material from euphotic zone in eastern Beaufort Sea Thomas Juul-Pedersen1,2,3,*, Christine Michel1, Michel Gosselin2 1Freshwater Institute, Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba...
Knowledge on the relative effects of biological activity and precipitation/dissolution calcium carbonate (CaCO3) in influencing air-ice CO2 exchange sea-ice-covered season is currently lacking. Furthermore, spatial temporal occurrence CaCO3 other biogeochemical parameters sea ice are still not well described. Here we investigated autotrophic heterotrophic as subarctic South West Greenland. Integrated over entire (71 days), was net with a carbon fixation 56 mg C m−2, derived from...