A5015752311- Identification and Quantification in Food
- Fish Ecology and Management Studies
- Genetic diversity and population structure
- Ichthyology and Marine Biology
- Marine and fisheries research
- Polar Research and Ecology
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
- Genetic and phenotypic traits in livestock
- Mercury impact and mitigation studies
- Anaerobic Digestion and Biogas Production
- Bird parasitology and diseases
- Aquaculture Nutrition and Growth
- Aquaculture disease management and microbiota
- Marine animal studies overview
- Rangeland Management and Livestock Ecology
- Marine and coastal plant biology
- Neurobiology and Insect Physiology Research
- Fish Biology and Ecology Studies
- Parasite Biology and Host Interactions
- Ruminant Nutrition and Digestive Physiology
- Analytical chemistry methods development
- Marine and environmental studies
Norwegian Institute of Marine Research
2019-2024
Western Norway University of Applied Sciences
2018-2022
University of Bergen
2016-2022
Vestlandsforsking
2016-2022
Science for Life Laboratory
2017-2018
Uppsala University
2017-2018
A detailed understanding of the formation potent neurotoxic methylmercury is needed to explain large observed variability in levels aquatic systems. While it known that organic matter interacts strongly with mercury, role composition systems remains poorly understood. Here we show phytoplankton-derived compounds enhance mercury methylation rates boreal lake sediments through an overall increase bacterial activity. Accordingly, situ defines influenced by planktonic blooms. In contrast,...
Despite the global awareness that mercury, and methylmercury in particular, is a neurotoxin to which millions of people continue be exposed, there are sizable gaps understanding processes organisms involved formation aquatic ecosystems. In present study, we shed light on diversity microorganisms responsible for boreal lake sediments. All identified associated with processing organic matter systems. Moreover, our results show well-known mercury-methylating sulfate-reducing bacteria...
Microbial communities in the glacier forefield of Styggedalsbreen, Norway, were investigated along a chronosequence from newly exposed soil to vegetated soils using next-generation sequencing 16S rRNA gene. In order monitor short-term effect temperature on community successions gradient, samples incubated at three different temperatures (5°C, 10°C and 22°C). The microbial composition differed according distance glacial terminus incubation temperature. Samples close dominated by...
The large estimates of mesopelagic fish biomass have fuelled harvesting interests in the relatively untouched ocean's twilight zone. Mueller's pearlside, one most abundant species inhabiting north Atlantic layer, is a candidate to such fisheries despite its enormous ecological importance and insufficient knowledge about population genetic structure. To shed light on latter, 863 individuals sampled across North Mediterranean were genotyped using 170 genome-wide SNPs. Analyses revealed...
Abstract Sustainable fisheries require reliable species identification and understanding of the underlying genetic hierarchies within targeted species. Three Sebastes are commonly found in northeastern Atlantic: mentella (beaked redfish), norvegicus (golden viviparus (Norway redfish). These morphologically similar have largely overlapping distribution ranges. Besides, three cryptic for S. depth-defined ecotypes been suggested. Genetic knowledge methods needed to identify monitor these look...
Abstract Despite the importance of commercially harvested benthopelagic fish Beryx mollis , little information is available on their adult phase and reproduction. This likely due to low abundance this species compared splendens decadactylus as well misidentification spp. In study, early life stages B. were found in southwest region off Sri Lanka during a survey with research vessel Dr Fridtjof Nansen 2018, coinciding monsoon period. As morphological characteristics eggs larval three are very...
Abstract The North Sea is an important spawning and nursery ground for many demersal pelagic fishes whose areas are largely overlapping in time space. This makes ichthyoplankton visual identification from the various species particularly challenging. Despite historically intensive research area, detailed information on sites times taxa, incomplete. To update detail mapping of fish performance distribution central northern regions Sea, a method molecular taxonomic approach used classification...
Methane (CH4) is one of the most abundant greenhouse gases in atmosphere and identification its sources sinks crucial for reliability climate model outputs. Although CH4 production consumption rates have been reported from a broad spectrum environments, data obtained glacier forefields are restricted to few locations. We report activities methanotrophic communities their diversity along chronosequence front sub-Arctic using high-throughput sequencing gas flux measurements. oxidation were...
Abstract The cold-adapted polar cod Boreogadus saida, a key species in Arctic ecosystems, is vulnerable to global warming and ice retreat. In this study, 1257 individuals sampled 17 locations within the latitudinal range of 75–81°N from Svalbard East Siberian Sea were genotyped with dedicated suite 116 single-nucleotide polymorphic loci (SNP). overall pattern isolation by distance (IBD) found was driven two easternmost samples (East Laptev Sea), whereas no differentiation registered area...
Abstract Although vital in fisheries management, no comprehensive studies on ichthyoplankton have been conducted Sri Lankan waters the north central Indian Ocean hitherto. Hence, this study is first detailed account of diversity and species composition larval fish based samples collected during southwest monsoon 2018. In total, 80 belonging to 69 families were identified using morphological molecular methods targeting COI gene. The varied significantly between regions: east (North East,...
Abstract Elucidating the effects of domesticated organisms escaping into natural environment represents a topic importance in both evolutionary and conservation biology. However, when excluding abundant data on salmonids, there is lack knowledge this for marine fish aquaculture, which continues to expand globally. In order bridge empirical gap, we investigated suspected escape sexually mature Atlantic cod from commercial farm northern Norway. This involved genotyping samples cages farm,...
Abstract Evolutionary morphological and physiological differences between browsers grazers contribute to species‐specific digestion efficiency of food resources. Rumen microbial community structure is supposedly adapted characteristic nutrient composition the diet source. If this assumption correct, domesticated ruminants, or grazers, are poor model animals for assessing nutritional value consumed by browsing game species. In study, typical spring summer foods European moose ( Alces alces )...
Here we present the genome of Methylovulum psychrotolerans strain HV10-M2, a methanotroph isolated from Hardangervidda national park (Norway). This represents second two validly published species genus with sequenced genome. The other is M. miyakonense HT12, which type and Methylovulum. We psychrotolerants str. HV10-M2 discuss differences between miyakonense. size 4,923,400 bp contains 4415 protein-coding genes, 50 RNA genes an average GC content 50.88%.
Abstract The eggs of Polka-dot ribbonfish Desmodema polystictum have been recorded for the first time in Indian Ocean. Although only previous information on from this species consists line drawings 1973 (Pacific Ocean), identification was possible by combining morphological and molecular analyses. As far as we are aware, few confirmed records adult individuals previously reported We found proximity numerous adults (57 42 at two stations) indicating that Central Ocean is potentially an...
Abstract The fish community of the Scotia Sea is diverse and plays key roles in Antarctic food webs biogeochemical cycling. However, knowledge spatial structure their early life stages limited, particularly region surrounding South Orkney Islands. Here we examine stage epipelagic using data from a basin-scale survey conducted 2019, which sampled top 200 m water column. 347 19 genera were caught 58 hauls. A third all specimens belonged to genus Notolepis nine most common comprised over 90%...
Resistance toward the antiparasitic pyrethroid, deltamethrin, is reported in Atlantic salmon louse (
Abstract Accurate taxonomic classification and developmental stage determination of fish eggs are crucial for ecological monitoring, conservation efforts, stock assessments. Traditional methods fisheries rely on visual examination morphological traits, but they face challenges due to species overlap especially early stages. Molecular tools, such as DNA barcoding, offer higher resolution in identification may not provide information. This study explores the effectiveness different...
Arctic permafrost soils store substantial reserves of organic matter (OM) from which microbial transformation contributes significantly to greenhouse gas emissions CH4 and CO2. However, many younger sediments exposed by glacier retreat sea level change in fjord landscapes lack significant carbon resources, so their capacity promote is unclear. We therefore studied the effects increased temperatures (4°C 21°C) OM on rates Fe(III) reduction, CO2 production, methanogenesis three different...