A5070070402- Isotope Analysis in Ecology
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Arctic and Antarctic ice dynamics
- Marine and fisheries research
- Marine and coastal plant biology
- Marine and environmental studies
- Geological Studies and Exploration
- Climate change and permafrost
- Ocean Acidification Effects and Responses
- Indigenous Studies and Ecology
- Atmospheric and Environmental Gas Dynamics
- Polar Research and Ecology
- Arctic and Russian Policy Studies
- Microbial Community Ecology and Physiology
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Oil Spill Detection and Mitigation
- Coastal wetland ecosystem dynamics
- Environmental Science and Water Management
- Oceanographic and Atmospheric Processes
- Fish Ecology and Management Studies
Akvaplan-niva
2013-2023
The FRAM Centre
2014-2023
Centre for Arctic Gas Hydrate, Environment and Climate
2013-2023
UiT The Arctic University of Norway
2013-2023
NTNU Samfunnsforskning
2023
Independent Broadcasting Associates
2018
Aga Khan Foundation
2003
International University of Monaco
1996-1999
International Atomic Energy Agency
1996
University of Alaska Fairbanks
1996
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 310:1-14 (2006) - doi:10.3354/meps310001 Benthic community response ice algae and phytoplankton in Ny Ålesund, Svalbard Kelton W. McMahon1,7,*, William G. Ambrose Jr.1,6, Beverly J. Johnson2, Ming-Yi Sun3, Glenn R. Lopez4, Lisa M. Clough5, Michael L. Carroll6 1Department of Biology, 2Department Geology, Bates...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 310:33-46 (2006) - doi:10.3354/meps310033 Trophic relationships and pelagic–benthic coupling during summer in Barents Sea Marginal Ice Zone, revealed by stable carbon nitrogen isotope measurements Tobias Tamelander1,2,3,*, Paul E. Renaud4,2, Haakon Hop1, Michael L. Carroll2, William G. Ambrose Jr.5,2, Keith...
Seafloor methane release due to the thermal dissociation of gas hydrates is pervasive across continental margins Arctic Ocean. Furthermore, there increasing awareness that shallow hydrate-related seeps have appeared enhanced warming Ocean bottom water during last century. Although it has been argued a hydrate gun could trigger abrupt climate change, processes and rates subsurface/atmospheric natural exchange remain uncertain. Here we investigate dynamics between stability environmental...
Abstract Stable isotope and fatty acid trophic markers (FATMs) were used to assess carbon flow structures of sympagic, pelagic benthic communities in high-Arctic Svalbard. Three regions sampled: Northwest Svalbard – dominated by Atlantic water (AtW) limited seasonal sea ice; Northern AtW perennial Northeast Arctic (ArW) extensive ice. four levels (TL) found the three habitats, with a dominance omnivores (TL = 2.4–2.7). Ice fauna relied on phytoplankton ice algae, zooplankton primarily...
Abstract Cold seeps can support unique faunal communities via chemosynthetic interactions fueled by seabed emissions of hydrocarbons. Additionally, cold enhance habitat complexity at the deep seafloor through accretion methane derived authigenic carbonates (MDAC). We examined infaunal and megafaunal community structure high‐Arctic analyses benthic samples photographs from pockmarks exhibiting highly elevated concentrations in sediments water column Vestnesa Ridge (VR), Svalbard (79° N)....
Arctica islandica is the longest-living non-colonial animal known at present. It inhabits coastal waters in North Atlantic and its annual shell increments are widely used for paleoclimatic reconstructions. There no consensus, however, about intra-annual timing of feeding activity growth. This research aims to identify main environmental drivers A. valve gape clarify ambiguity surrounding seasonal activity. A lander was deployed from February 2014 September 2015 on sea bottom Ingøya, Norway...
The lack of high resolution, geographically diverse proxy records from the marine realm limits our understanding climate dynamics in North Atlantic Ocean and Arctic during recent centuries. We investigate impact large-scale variability on bivalve, Arctica islandica, (Linnaeus 1767) northern Norway (71°N). evaluate use annual shell growth geochemical as proxies for over centennial scales by developing a continuous, 113-yr master chronology an oxygen isotope record (δ18O) live caught material....
Abstract. Biogeochemical cycling in the semi-enclosed Arctic Ocean is strongly influenced by land–ocean transport of carbon and other elements vulnerable to environmental climate changes. Sediments are an important part biogeochemical provide opportunity study present historical input fate organic matter (e.g., through permafrost thawing). Comprehensive sedimentary records required compare differences between regions budgets. To this end, Circum-Arctic Sediment CArbon DatabasE (CASCADE) was...
Abstract We examined the growth rate of circumpolar Greenland Cockle ( Serripes groenlandicus ) over a period 20 years (1983–2002) from Rijpfjord, high‐Arctic fjord in northeast Svalbard (80°10′N, 22°15′E). This encompassed different phases large‐scale climatic oscillations with accompanying variations local physical variables (temperature, atmospheric pressure, precipitation, sea ice cover), allowing us to analyze linkage between rate, oscillations, and their biological manifestations....
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 552:1-18 (2016) - DOI: https://doi.org/10.3354/meps11773 FEATURE ARTICLE Arctic cold seeps in marine methane hydrate environments: impacts on shelf macrobenthic community structure offshore Svalbard Emmelie K. L. Åström1,*, Michael Carroll1,2, William G. Ambrose Jr.1,3,4, JoLynn Carroll1,2 1CAGE – Centre for...
Abstract. Cold-seep megafaunal communities around gas hydrate mounds (pingos) in the western Barents Sea (76∘ N, 16∘ E, ∼400 m depth) were investigated with high-resolution, geographically referenced images acquired an ROV and towed camera. Four pingos associated seabed methane release hosted diverse biological of mainly nonseep (background) species including commercially important fish crustaceans, as well a new to this area (the snow crab Chionoecetes opilio). We attribute presence most...
Over the past century, dendrochronology technique of crossdating has been widely used to generate a global network tree-ring chronologies that serves as leading indicator environmental variability and change. Only recently, however, this same approach applied growth increments in calcified structures bivalves, fish corals world's oceans. As trees, these crossdated marine are well replicated, annually resolved absolutely dated, providing uninterrupted multi-decadal millennial histories ocean...