Rolf Gradinger
Biographic Data
| ID | 6823994 |
|---|---|
| NAME | Rolf Gradinger |
| GIVEN NAMES | Rolf |
| FAMILY NAME | Gradinger |
| SIGNATURE | GRADINGER R |
| AFFILIATIONS | UiT The Arctic University of Norway |
| ORCID | 0000-0001-6035-3957 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 12 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2010 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
Influence of oceanic mixing on sea ice net community production in the Canadian Arctic
Turbulence-driven nutrient supply has the potential to shape bottom sea ice microbial communities, affecting the balance of O2 uptake and release which defines the net community production (NCP) of the ice. This study contrasts sea ice NCP at two sites with comparatively high and low under-ice turbulent conditions. These locations were sampled over a 4-week spring bloom period in the Dease Strait region of the Kitikmeot Sea near the community of …
Impact of deployment duration of surface-tethered sediment traps on downward flux rates of chlorophyll a and particulate organic carbon
Field measurements of daily downward fluxes are crucial for understanding marine ecosystem dynamics and for providing input and reference data for regional and global carbon flux models. Short-term surface-tethered sediment traps are often used to quantify the downward flux in the upper water column, but different deployment durations have been used (2–360 h). In this study, conducted at five locations in the European (sub-)Arctic, we investigate…
A pan-Arctic perspective on the influence of ice algae on sea-ice nutrient concentrations
Sea-ice algae account for a substantial part of annual primary production in ice-covered waters and are an important component of the Arctic marine food web. With climate-induced changes to snow and sea-ice cover and their impact on the surface ocean, such as earlier melt, thinner ice, and increased upper-ocean stratification, a shift toward earlier and more extensive nutrient limitation on ice algal growth can be expected. Therefore, increasing …
Nansen and Amundsen basins
The projected transition of the central Arctic Ocean (CAO) into a warmer, seasonally ice-free ocean requires more knowledge of this environment to predict changes in the structure and dynamics of its ecosystems. We aimed to compare the state and underlying processes of Nansen Basin and Amundsen Basin ecosystems observed in August–September 2021 and assess impacts of Atlantic Water inflow and fresher Transpolar Drift waters, respectively, on these…
Overview of the MosaiC expedition
The international and interdisciplinary sea-ice drift expedition “The Multidisciplinary drifting Observatory for the Study of Arctic Climate” (MOSAiC) was conducted from October 2019 to September 2020. The aim of MOSAiC was to study the interconnected physical, chemical, and biological characteristics and processes from the atmosphere to the deep sea of the central Arctic system. The ecosystem team addressed current knowledge gaps and explored un…
Still Arctic?—The changing Barents Sea
The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. Physical conditions in this area are characterized by large seasonal contrasts between partial sea-ice cover in winter and spring versus predominantly open water in summer and autumn. Observations over recent decades show that s…
The circumpolar impacts of climate change and anthropogenic stressors on Arctic cod ( Boreogadus saida ) and its ecosystem
Arctic cod (Boreogadus saida) is the most abundant forage fish in the Arctic Ocean. Here we review Arctic cod habitats, distribution, ecology, and physiology to assess how climate change and other anthropogenic stressors are affecting this key species. This review identifies vulnerabilities for different life stages across the entire distribution range of Arctic cod. We explore the impact of environmental (abiotic and biotic) and anthropogenic st…
Overview of the MosaiC expedition
Arctic Ocean properties and processes are highly relevant to the regional and global coupled climate system, yet still scarcely observed, especially in winter. Team OCEAN conducted a full year of physical oceanography observations as part of the Multidisciplinary drifting Observatory for the Study of the Arctic Climate (MOSAiC), a drift with the Arctic sea ice from October 2019 to September 2020. An international team designed and implemented the…
Overview of the MosaiC expedition
With the Arctic rapidly changing, the needs to observe, understand, and model the changes are essential. To support these needs, an annual cycle of observations of atmospheric properties, processes, and interactions were made while drifting with the sea ice across the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition from October 2019 to September 2020. An international team desig…
Overview of the MosaiC expedition
Year-round observations of the physical snow and ice properties and processes that govern the ice pack evolution and its interaction with the atmosphere and the ocean were conducted during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition of the research vessel Polarstern in the Arctic Ocean from October 2019 to September 2020. This work was embedded into the interdisciplinary design of the 5 MOSAiC te…
Net heterotrophy in High Arctic first-year and multi-year spring sea ice
The net productivity of sea ice is determined by the physical and geochemical characteristics of the ice–ocean system and the activity of organisms inhabiting the ice. Differences in habitat suitability between first-year and multi-year sea ice can affect the ice algal community composition and acclimation state, introducing considerable variability to primary production within each ice type. In this study, we characterized the biogeochemical var…
Timing of Ice Algal Grazing by the Arctic Nearshore Benthic Amphipod Onisimus litoralis
Sea ice algae have been widely discussed as a potential food source for pelagic and benthic animals in ice-covered waters, specifically in the light of current substantial changes in the Arctic ice regime. Stomach and gut contents of the Arctic nearshore lysianassid amphipod Onisimus litoralissampled from February to May 2003 indicate that Arctic ice algae were dominant food no earlier than the onset of ice melt. Crustaceans, common prey in a pre…
No prominent works on this page.
Timing of Ice Algal Grazing by the Arctic Nearshore Benthic Amphipod Onisimus litoralis
Sea ice algae have been widely discussed as a potential food source for pelagic and benthic animals in ice-covered waters, specifically in the light of current substantial changes in the Arctic ice regime. Stomach and gut contents of the Arctic nearshore lysianassid amphipod Onisimus litoralissampled from February to May 2003 indicate that Arctic ice algae were dominant food no earlier than the onset of ice melt. Crustaceans, common prey in a pre…
Overview of the MosaiC expedition
Arctic Ocean properties and processes are highly relevant to the regional and global coupled climate system, yet still scarcely observed, especially in winter. Team OCEAN conducted a full year of physical oceanography observations as part of the Multidisciplinary drifting Observatory for the Study of the Arctic Climate (MOSAiC), a drift with the Arctic sea ice from October 2019 to September 2020. An international team designed and implemented the…
Overview of the MosaiC expedition
With the Arctic rapidly changing, the needs to observe, understand, and model the changes are essential. To support these needs, an annual cycle of observations of atmospheric properties, processes, and interactions were made while drifting with the sea ice across the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition from October 2019 to September 2020. An international team desig…
Overview of the MosaiC expedition
Year-round observations of the physical snow and ice properties and processes that govern the ice pack evolution and its interaction with the atmosphere and the ocean were conducted during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition of the research vessel Polarstern in the Arctic Ocean from October 2019 to September 2020. This work was embedded into the interdisciplinary design of the 5 MOSAiC te…
Net heterotrophy in High Arctic first-year and multi-year spring sea ice
The net productivity of sea ice is determined by the physical and geochemical characteristics of the ice–ocean system and the activity of organisms inhabiting the ice. Differences in habitat suitability between first-year and multi-year sea ice can affect the ice algal community composition and acclimation state, introducing considerable variability to primary production within each ice type. In this study, we characterized the biogeochemical var…
Still Arctic?—The changing Barents Sea
The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. Physical conditions in this area are characterized by large seasonal contrasts between partial sea-ice cover in winter and spring versus predominantly open water in summer and autumn. Observations over recent decades show that s…
The circumpolar impacts of climate change and anthropogenic stressors on Arctic cod ( Boreogadus saida ) and its ecosystem
Arctic cod (Boreogadus saida) is the most abundant forage fish in the Arctic Ocean. Here we review Arctic cod habitats, distribution, ecology, and physiology to assess how climate change and other anthropogenic stressors are affecting this key species. This review identifies vulnerabilities for different life stages across the entire distribution range of Arctic cod. We explore the impact of environmental (abiotic and biotic) and anthropogenic st…
Overview of the MosaiC expedition
The international and interdisciplinary sea-ice drift expedition “The Multidisciplinary drifting Observatory for the Study of Arctic Climate” (MOSAiC) was conducted from October 2019 to September 2020. The aim of MOSAiC was to study the interconnected physical, chemical, and biological characteristics and processes from the atmosphere to the deep sea of the central Arctic system. The ecosystem team addressed current knowledge gaps and explored un…
A pan-Arctic perspective on the influence of ice algae on sea-ice nutrient concentrations
Sea-ice algae account for a substantial part of annual primary production in ice-covered waters and are an important component of the Arctic marine food web. With climate-induced changes to snow and sea-ice cover and their impact on the surface ocean, such as earlier melt, thinner ice, and increased upper-ocean stratification, a shift toward earlier and more extensive nutrient limitation on ice algal growth can be expected. Therefore, increasing …
Nansen and Amundsen basins
The projected transition of the central Arctic Ocean (CAO) into a warmer, seasonally ice-free ocean requires more knowledge of this environment to predict changes in the structure and dynamics of its ecosystems. We aimed to compare the state and underlying processes of Nansen Basin and Amundsen Basin ecosystems observed in August–September 2021 and assess impacts of Atlantic Water inflow and fresher Transpolar Drift waters, respectively, on these…
Influence of oceanic mixing on sea ice net community production in the Canadian Arctic
Turbulence-driven nutrient supply has the potential to shape bottom sea ice microbial communities, affecting the balance of O2 uptake and release which defines the net community production (NCP) of the ice. This study contrasts sea ice NCP at two sites with comparatively high and low under-ice turbulent conditions. These locations were sampled over a 4-week spring bloom period in the Dease Strait region of the Kitikmeot Sea near the community of …
Impact of deployment duration of surface-tethered sediment traps on downward flux rates of chlorophyll a and particulate organic carbon
Field measurements of daily downward fluxes are crucial for understanding marine ecosystem dynamics and for providing input and reference data for regional and global carbon flux models. Short-term surface-tethered sediment traps are often used to quantify the downward flux in the upper water column, but different deployment durations have been used (2–360 h). In this study, conducted at five locations in the European (sub-)Arctic, we investigate…
Arctic (11 works) · Arctic and Antarctic ice dynamics (9 works) · Environmental Science (9 works) · Oceanography (9 works) · Sea ice (9 works) · Geology (8 works) · Arctic ice pack (6 works) · Ecology (6 works) · Biology (5 works) · Climatology (4 works)