A5082378819- Ocean Acidification Effects and Responses
- Marine and coastal ecosystems
- Arctic and Antarctic ice dynamics
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Marine Biology and Ecology Research
- Oceanographic and Atmospheric Processes
- Diet, Metabolism, and Disease
- Metabolism and Genetic Disorders
- Pancreatic function and diabetes
- Hyperglycemia and glycemic control in critically ill and hospitalized patients
- Geology and Paleoclimatology Research
- Marine and fisheries research
- Diet and metabolism studies
- Mitochondrial Function and Pathology
- Adipose Tissue and Metabolism
- Marine Bivalve and Aquaculture Studies
- Isotope Analysis in Ecology
- Geological Studies and Exploration
- Arctic and Russian Policy Studies
- Cancer, Hypoxia, and Metabolism
- Climate change and permafrost
- Biochemical effects in animals
- Food Industry and Aquatic Biology
- Coral and Marine Ecosystems Studies
The FRAM Centre
2019-2023
Norwegian Institute of Marine Research
2019-2023
University of Groningen
2015-2022
Royal Netherlands Institute for Sea Research
2011-2022
Utrecht University
2017-2022
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2014-2015
University of East Anglia
2011-2015
Royal Statistical Society
2015
Vanderbilt University
1991-1993
University of Chicago
1993
In this paper we examine conditions that underlie vulnerability and resilience possibilities for households communities face respond to climate- other changes, in nine East West African countries. We base our analysis on a unique integrated qualitative quantitative dataset composed of household surveys village focus group studies carried out across wide range environments agricultural systems. identify human population growth, commercialization the economy, natural resource use policies,...
Abstract A major surface circulation feature of the Arctic Ocean is Transpolar Drift (TPD), a current that transports river‐influenced shelf water from Laptev and East Siberian Seas toward center basin Fram Strait. In 2015, international GEOTRACES program included high‐resolution pan‐Arctic survey carbon, nutrients, suite trace elements isotopes (TEIs). The cruises bisected TPD at two locations in central basin, which were defined by maxima meteoric dissolved organic carbon concentrations...
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...
To identify the source(s) of carbon for indirect pathway hepatic glycogen synthesis, we studied nine 42-h fasted conscious dogs given a continuous intraduodenal infusion glucose, labeled with [1-13C]glucose and [3-3H]glucose, at 8 mg.kg-1.min-1 240 min. Glycogen formation by direct was measured 13C-NMR. Net balances gluconeogenic amino acids, lactate, glycerol were determined using arteriovenous difference technique. During steady-state period (the final hour infusion), 81% glucose infused...
After the intraperitoneal injection into young mice of 700-800 mg/kg salicylate, brain glucose fell to one-third or less control values despite normal plasma levels; lactate was nearly doubled and there were small decreases in phosphocreatine (18%) glycogen (17%). ATP, pyruvate, alpha-ketoglutarate, glutamate unchanged. In liver, reduced 79% five times higher than animals; glucose, glucose-6-phosphate, ATP Since salicylate uncouples oxidative phosphorylation, it is postulated that high...
Abstract— The levels of the main cerebral energy reserves, ATP, P‐creatine, glycogen and glucose, several glycolytic intermediates lactate, were measured in brains fish ( Carassius auratus ), turtle Pseudemys scripta elegans ) frog Rana pipiens ). these 2‐9 times higher than those reported for mammals. In frog, 35 per cent during winter spring. P‐creatine: ATP ratios 3 instead more usual (mammalian) value 1. other similar to found mammalian brain. When anoxia was produced by decapitation,...
Abstract. Due to low calcium carbonate saturation states, and winter mixing that brings anthropogenic carbon the deep ocean, Nordic Seas their cold-water corals are vulnerable ocean acidification. Here, we present a detailed investigation of changes in pH aragonite from preindustrial times 2100, by using situ observations, gridded climatological data, projections for three different future scenarios with Norwegian Earth System Model (NorESM1-ME). During period regular biogeochemistry...
Previous studies have demonstrated the importance of brain in directing counterregulation during insulin-induced hypoglycemia dogs. The capability selective carotid or vertebrobasilar triggering was assessed this study using overnight-fasted Insulin (21 pM · kg−1 min−1) infused for 3 h to create peripheral presence 1) (vertebral glucose infusion, n = 5), 2) (carotid 3) absence and vertebral 4), 4) total (no head 5). Glucose via a leg vein as needed each group minimize differences levels (2.6...
The Atlantic Water, entering the Arctic through Barents Sea and Fram Strait, is main source of nutrients in Ocean. divided by polar front into an Atlantic-dominated domain south, Arctic-dominated north. a thermohaline structure, which topographically-steered at sub-surface, influenced seasonal sea ice edge near surface. Exchanges between inflowing Water surrounding waters are key for primary production Sea. In October 2020, we measured (nitrate, phosphate silicic acid), dissolved inorganic...
Abstract —This is a report of the effect extreme changes in plasma sodium concentration induced by chronic (5 d) water deprivation and hypertonic saline injections acute (4 h) overhydration with hypotonic glucose or fructose on electrolyte content levels selected metabolites brains young mice. In dehydrated hypernatremic mice (plasma Na + , 186 × 3 mequiv./1) significant increases were found brain (82%), alanine (16%), aspartate (45%), glutamate (19%), gamma‐amino butyrate (34%) glutamine...
Inhibition of liver phosphorylase may play an important role in the fructose-induced hypoglycemia hereditary fructose intolerance. This report is vivo study effects on selected metabolic intermediates and activity liyers young mice. Phosphorylase homogenate was measured direction glycogen breakdown. The Km for Pi 1.12 mM Ki fructose-1-phosphate 1.19 mM. finding particularly relevant since twenty minutes after injection (30 mmoles per kilogram intraperitoneally) reduced 50 cent, p <...
The Southern Ocean is a hotspot of the climate-relevant organic sulfur compound dimethyl sulfide (DMS). Spatial and temporal variability in DMS concentration higher than any other oceanic region, especially marginal ice zone. During one-week expedition across continental shelf West Antarctic Peninsula (WAP), from break into Marguerite Bay, January 2015, spatial heterogeneity its precursor sulfoniopropionate (DMSP) was studied linked with environmental conditions, including sea-ice melt...
The Barents Sea is a productive Arctic shelf sea experiencing Atlantification with ocean warming, ice loss and increased influence of Atlantic Water. impact these changes on inorganic carbon nutrient dynamics acidification are yet to be fully understood. Seasonal variability drivers nutrients were determined from south the Polar Front at 76 °N in 82 Nansen Basin, Ocean, encompassing regimes summer (August 2019), winter (December winter/spring (March 2021) spring (May 2021). Summer sea-ice...
Strong seasonality is a key feature of high-latitude systems like the Barents Sea. While interannual variability and long-term changes Sea are well-documented, seasonal progression physical biological less known, mainly due to poor accessibility seasonally ice-covered area in winter spring. Here, we use an extensive set situ observations from four scientific expeditions covering late summer 2021 northwestern Sea, fully ice-free conditions. We found that sea ice meltwater timing conditions...
Abstract. Observations along the southwestern Atlantic WOCE A17 line made during Dutch GEOTRACES-NL programme (2010–2011) were compared with historical data from 1994 to quantify changes in anthropogenic component of total pool dissolved inorganic carbon (ΔCant). Application extended multi-linear regression (eMLR) method shows that ΔCant 2011 has largely remained confined upper 1000 dbar. The greatest occur 200 dbar Subantarctic Zone (SAZ), where a maximum increase 37 μmol kg−1 is found....