A5061308845- Marine Biology and Ecology Research
- Marine and fisheries research
- Isotope Analysis in Ecology
- Arctic and Antarctic ice dynamics
- Marine animal studies overview
- Marine and coastal ecosystems
- Marine Bivalve and Aquaculture Studies
- Marine and coastal plant biology
- Aquatic Invertebrate Ecology and Behavior
- Ocean Acidification Effects and Responses
- Fish Ecology and Management Studies
- Methane Hydrates and Related Phenomena
- Marine Ecology and Invasive Species
- Cephalopods and Marine Biology
- Aquaculture Nutrition and Growth
- Food Industry and Aquatic Biology
- Marine and environmental studies
- Indigenous Studies and Ecology
- Impact of Light on Environment and Health
- Ichthyology and Marine Biology
- Parasite Biology and Host Interactions
- Coral and Marine Ecosystems Studies
- Atmospheric and Environmental Gas Dynamics
- Microbial Community Ecology and Physiology
- bioluminescence and chemiluminescence research
UiT The Arctic University of Norway
2015-2024
Norwegian University of Science and Technology
2018-2023
Université Laval
2023
University of Helsinki
2023
Arctic Research Centre
2023
Aarhus University
2023
Marine and Freshwater Research Institute
2023
University Centre in Svalbard
2007-2021
SINTEF Ocean
2021
Centre for Arctic Gas Hydrate, Environment and Climate
2021
Abstract The Arctic bloom consists of two distinct categories primary producers, ice algae growing within and on the underside sea ice, phytoplankton in open waters. Long chain omega‐3 fatty acids, a subgroup polyunsaturated acids (PUFAs) produced exclusively by these algae, are essential to all marine organisms for successful reproduction, growth, development. During an extensive field study shelf seas, we followed seasonal biomass development their food quality terms relative PUFA content....
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 303:167-175 (2005) - doi:10.3354/meps303167 Ocean temperature oscillations enable reappearance of blue mussels Mytilus edulis in Svalbard after a 1000 year absence Jørgen Berge1, *, Geir Johnsen1, 2, Frank Nilsen1, Bjørn Gulliksen1, 3, Dag Slagstad4 1University Centre Svalbard, 9171 Longyearbyen,...
High-latitude environments show extreme seasonal variation in physical and biological variables. The classic paradigm of Arctic marine ecosystems holds that most processes slow down or cease during the polar night. One key process is generally assumed to winter diel vertical migration (DVM) zooplankton. DVM constitutes largest synchronized movement biomass on planet, paramount importance for ecosystem function carbon cycling. Here we present acoustic data demonstrate a behaviour zooplankton...
The timing of reproductive events Calanus glacialis is closely coupled to the two major marine primary production in Arctic: ice algal and phytoplankton blooms. Reproductive strategies vary between different physical biological environments European Canadian Arctic. In Beaufort Sea high Arctic Rijpfjorden on Svalbard, C. utilized algae bloom fuel spawning spring, while growth development new generation was primarily supported by bloom. predominantly ice-free Kongsfjorden (Svalbard), mainly a...
Tight coupling between pelagic and benthic communities is accepted as a general principle on Arctic shelves. Whereas this paradigm has been useful for guiding ecological research, it perhaps led to disproportionate focus POM ice algae the most likely sources of carbon food web. shelves are complex systems, including banks, fjords, trough systems up 350 m or more in depth. In stable-isotope study, thirteen different potential were analysed their contribution food-webs Isfjorden, Svalbard. A...
Atlantic mackerel (Scomber scombrus) were recorded in Isfjorden, Svalbard (78˚15ʹ N, 15˚11ʹ E) late September 2013. This record is the northernmost known occurrence of Arctic and represents a possible northward expansion (of ca. 5˚ latitude) its distributional range. The examined specimens between 7 11 years old, with mean size 39 cm weight 0.5 kg. Examination stomach contents indicated that feeding mainly on juvenile herring (Clupea harengus). discussed relation to recent increase...
Isfjorden, a broad Arctic fjord in western Spitsbergen, has shown significant changes hydrography and inflow of Atlantic Water (AW) the last decades that only recently have been observed Ocean north Svalbard. Variability trends this fjord's climate circulation are therefore analysed from observational reanalysis data during 1987 to 2017. Isfjorden experienced shift summer ocean structure 2006, AW generally bottom layer (with increasing thickness) higher up water column. This shift,...
Light is a major cue for nearly all life on Earth. However, most of our knowledge concerning the importance light based organisms' response to during daytime, including dusk and dawn phase. When it dark, often considered as pollution, with increasing appreciation its negative ecological effects. Using an Autonomous Surface Vehicle fitted hyperspectral irradiance sensor acoustic profiler, we detected quantified behavior zooplankton in unpolluted environment high Arctic polar night compared...
Arctic marine ecosystems support fisheries of significant and increasing economic nutritional value. Commercial stocks are sustained by pelagic food webs with relatively few keystone taxa mediating energy transfer to higher trophic levels, it remains largely unknown how these will be affected changing climate the influx boreal taxa. Calanus species store large quantities lipids, making zooplankton a critical link in food-webs. The usually larger and, importantly, have been suggested contain...
Arctic cod (Boreogadus saida) is the most abundant forage fish in Ocean. Here we review habitats, distribution, ecology, and physiology to assess how climate change other anthropogenic stressors are affecting this key species. This identifies vulnerabilities for different life stages across entire distribution range of cod. We explore impact environmental (abiotic biotic) on with a regional perspective scenario up year 2050 identify knowledge gaps constraining predictions. Epipelagic eggs...
The Barents Sea is one of the Polar regions where current climate and ecosystem change most pronounced. Here we review state knowledge physical, chemical biological systems in Sea. Physical conditions this area are characterized by large seasonal contrasts between partial sea-ice cover winter spring versus predominantly open water summer autumn. Observations over recent decades show that surface air ocean temperatures have increased, extent has decreased, stratification weakened, chemistry...
Abstract Sea ice is a critical component of the Earth’s Climate System and unique habitat. Sea-ice changes prior to satellite era are poorly documented, proxy methods needed constrain its past variability. Here, we demonstrate potential sedimentary DNA from Polarella glacialis , sea-ice microalga, for tracing conditions. We quantified P. (targeting nuclear ribosomal ITS1 region) in Arctic marine fjord surface sediments sediment core northern Baffin Bay spanning 12,000 years. trap samples...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 411:49-60 (2010) - DOI: https://doi.org/10.3354/meps08647 Increased irradiance reduces food quality of sea ice algae E. Leu1,*, J. Wiktor2, Søreide3, Berge3,4, S. Falk-Petersen1,5 1Norwegian Polar Institute, Environmental Centre, 9296 Tromsø, Norway 2Institute Oceanology, Polish Academy Sciences, Powstanców...
We present observations of zooplankton diel vertical migration (DVM) over a period 2 yr in an ice‐free and seasonally ice‐covered Arctic fjord. The contrasting environments permitted assessment the influences physical biological factors on temporal variability DVM patterns test hypothesis that reduction summer sea ice extent thickness following climatic warming will lead to changes via loss shading effect pelagic marine environment. Acoustic backscatter velocity data from moored 300‐kHz...
Abstract Aim Anticipated changes in the global ocean climate will affect vulnerability of marine ecosystems to negative effects non‐indigenous species ( NIS ). In A rctic, there is a need better characterize present and future biological introduction patterns processes. We use vector‐based assessment estimate high‐ rctic archipelago establishment. Location Global, with case study S valbard, N orway. Methods base our on level connectedness pools through regional shipping network predicted...
Herein we document findings from a unique scientific expedition north of Svalbard in the middle polar night January 2012, where observed an ice edge 82°N coupled with pronounced upwelling. The area has probably been ice-covered during winter period approximately 1790 until 1980s, which heavy conditions have prevailed Barents Sea and waters. However, recent winters characterized by midwinter open water on shelf, concomitant northeasterly along-shelf winds 2012. resulting northward Ekman...
Climate changes in the Arctic are predicted to alter distributions of marine species. However, such difficult quantify because information on present species distribution and genetic variation within is lacking or poorly examined. Blue mussels, Mytilus spp., ecosystem engineers coastal zone globally. To improve knowledge structure edulis complex Arctic, we analyzed 81 SNPs 534 spp. individuals sampled at 13 sites provide baseline data for mussels European Arctic. was most abundant found with...