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Viser treff 1143-1162 av 1437
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Salinity-induced phenotypic plasticity in threespine stickleback sperm activation
(Journal article; Peer reviewed, 2017) -
Salmon lice sampled from wild Atlantic salmon and sea trout throughout Norway display high frequencies of the genotype Associated with pyrethroid resistance
(Journal article, 2019)Atlantic salmon Salmo salar aquaculture is based on the use of open-pen sea cages, with the consequence that farmed fish are both recipients and sources of pathogens from surrounding waters. Currently, the parasitic salmon ... -
Salmon louse infestation in wild brown trout populations generates multi-modal mixture distributions
(Peer reviewed; Journal article, 2020)For successful evaluation of the overall effects of salmon louse infestation on brown trout population dynamics, it is crucial to have a realistic understanding of how lice infestation distributions are generated and how ... -
Salmonid stocking in five North Atlantic jurisdictions: Identifying drivers and barriers to policy change
(Peer reviewed; Journal article, 2018)1. New knowledge challenges long-established practices of fish stocking and transfer because of increasing scientific consensus that the release of cultivated fish can pose risks to biodiversity; however, stocking can also ... -
Salvage logging of mountain birch after geometrid outbreaks: Ecological context determines management outcomes
(Journal article; Peer reviewed, 2017)Outbreaks of pest insects occasionally cause mortality of entire forest stands. Salvage logging of affected stands is the most common management response to such events. Logging may aid stand recovery by increasing the ... -
Satellite telemetry uncovers important wintering areas for Snowy owls on the Kola peninsula, northwestern Russia
(Peer reviewed; Journal article, 2018)In order to reveal winter movements and wintering areas of snowy owls breeding in Northern Fennoscandia, we conducted a telemetry study by use of battery operated satellite transmitters. Nine battery powered ARGOS satellite ... -
Scaring as a tool to alleviate crop damage by geese: Revealing differences between farmers’ perceptions and the scale of the problem
(Journal article; Peer reviewed, 2017)Expanding populations of farmland foraging geese are causing escalating conflict with agriculture. We used questionnaires to investigate farmers´ perceptions in mid-Norway of spring staging geese and the extent to which ... -
Scavenging on a pulsed resource: quality matters for corvids but density for mammals
(Journal article; Peer reviewed, 2017)Background: Human food subsidies can provide predictable food sources in large quantities for wildlife species worldwide. In the boreal forest of Fennoscandia, gut piles from moose (Alces alces) harvest provide a potentially ... -
Scavenging patterns of an inbred wolf population in a landscape with a pulse of human-provided carrion
(Peer reviewed; Journal article, 2023)Scavenging is an important part of food acquisition for many carnivore species that switch between scavenging and predation. In landscapes with anthropogenic impact, humans provide food that scavenging species can utilize. ... -
Science on ecosystems and people to support the Kunming-Montreal Global Biodiversity Framework
(Peer reviewed; Journal article, 2023) -
Sea duck predation in mussel farms: the best nets for excluding common eiders safely and efficiently
(Peer reviewed; Journal article, 2013)Shellfish aquaculture is a growing food-producing sector. The blue mussel Mytilus edulis is the primary farmed shellfish and is also a main prey for various species of sea ducks. With their large density of high-quality ... -
Sea lice in Iceland: assessing the status and current implications for aquaculture and wild salmonids
(Journal article; Peer reviewed, 2019)This is the first in-depth study which quantifies lice infestation levels on wild and farmed salmonids in a fjord system in Iceland (Arnarfjörður, Westfjords) and gives a baseline for the assessment of sea lice infestation ... -
Seabird beachcast events associated with bycatch in the Norwegian purse seine fishery
(Peer reviewed; Journal article, 2022)Beachcast events, where a large number of seabird carcasses drift ashore, occur with irregular intervals. These events are due to specific situations where mass mortality of seabirds have occurred. Disentangling the cause ... -
Seabird-induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems
(Peer reviewed; Journal article, 2020) -
Seabirds as guides for fisheries management: European shag Phalacrocorax aristotelis diet as indicator of saithe Pollachius virens recruitment
(Journal article; Peer reviewed, 2018) -
Seasonal and elevational variability in the induction of specialized compounds from mountain birch (Betula pubescens var. pumila) by winter moth larvae (Operophtera brumata)
(Peer reviewed; Journal article, 2021)The mountain birch [Betula pubescens var. pumila (L.)] forest in the Subarctic is periodically exposed to insect outbreaks, which are expected to intensify due to climate change. To mitigate abiotic and biotic stresses, ... -
Seasonal and spatial variation of stream macroinvertebrate taxonomic and functional diversity across three boreal regions
(Peer reviewed; Journal article, 2023)1. The exploration of biodiversity has predominantly been based on taxonomicmeasures, whereas functional diversity, a key component of biodiversity, is compar-atively understudied. Therefore, studies simultaneously ... -
Seasonal environmental transitions and metabolic plasticity in a sea-ice alga from an individual cell perspective
(Peer reviewed; Journal article, 2024)Sea-ice microalgae are a key source of energy and nutrient supply to polar marine food webs, particularly during spring, prior to open-water phytoplankton blooms. The nutritional quality of microalgae as a food source ... -
Seasonal habitat use of three predatory fishes in a freshwater ecosystem
(Peer reviewed; Journal article, 2022)To understand the spatiotemporal overlap in the habitat use of sympatric predators, we studied longitudinal activity and reservoir section and depth use of pike (Esox lucius), pikeperch (Sander lucioerca) and catfsh (Silurus ... -
Seasonal host and ecological drivers may promote restricted water as a viral vector
(Peer reviewed; Journal article, 2021)In climates with seasonally limited precipitation, terrestrial animals congregate at high densities at scarce water sources. We hypothesize that viruses can exploit the recurrence of these diverse animal congrega- tions ...