Browsing Department of Biological Sciences by Title
Now showing items 565-584 of 2328
-
Earlier hatching and slower growth: a key to survival in the early life history of Norwegian spring spawning herring
(Peer reviewed; Journal article, 2018-10-02)Faster growth in fish larvae is often associated with enhanced survival, and here we investigated whether surviving juvenile Norwegian spring spawning herring Clupea harengus L. generally come from a pool of fast-growing ... -
Earlier sea-ice melt extends the oligotrophic summer period in the Barents Sea with low algal biomass and associated low vertical flux
(Journal article; Peer reviewed, 2023)The decrease in Arctic sea-ice extent and thickness as a result of global warming will impact the timing, duration, magnitude and composition of phytoplankton production with cascading effects on Arctic marine food-webs ... -
Early life growth is affecting timing of spawning in the semelparous Barents Sea capelin (Mallotus villosus)
(Journal article; Peer reviewed, 2021)Capelin (Mallotus villosus) is a forage fish and a key species in the Barents Sea (BS). The BS capelin are semelparous and hence only spawn once along the north coasts of Norway and Russia before they die. The age at ... -
East Asian summer monsoon precipitation variability since the last deglaciation
(Peer reviewed; Journal article, 2015-06-18)The lack of a precisely-dated, unequivocal climate proxy from northern China, where precipitation variability is traditionally considered as an East Asian summer monsoon (EASM) indicator, impedes our understanding of the ... -
The ecdysone receptor (EcR) is a major regulator of tissue development and growth in the marine salmonid ectoparasite, Lepeophtheirus salmonis (Copepoda, Caligidae)
(Peer reviewed; Journal article, 2016-08)The function of the ecdysone receptor (EcR) during development and molting has been thoroughly investigated in some arthropods such as insects but rarely in crustacean copepods such as the salmon louse Lepeophtheirus ... -
ECKOchain: A FAIR blockchain-based database for long-term ecological data
(Journal article; Peer reviewed, 2024)Open data practices in ecology are increasingly accepted, yet primary long-term ecological data remain hard to find. Barriers preventing open long-term ecological data include social and economic constructs such as a sense ... -
Ecological adaptation in Atlantic herring is associated with large shifts in allele frequencies at hundreds of loci
(Journal article; Peer reviewed, 2020)Atlantic herring is widespread in North Atlantic and adjacent waters and is one of the most abundant vertebrates on earth. This species is well suited to explore genetic adaptation due to minute genetic differentiation at ... -
Ecological and evolutionary effects of harvesting: lessons from the candy-fish experiment
(Peer reviewed; Journal article, 2013-11)Understanding the challenges of sustainable fisheries management is not easy for non-specialists, and even many specialists fail to appreciate the potential evolutionary consequences of harvest. We propose candy-fish ... -
Ecological load and balancing selection in circumboreal barnacles
(Journal article; Peer reviewed, 2021)Acorn barnacle adults experience environmental heterogeneity at various spatial scales of their circumboreal habitat, raising the question of how adaptation to high environmental variability is maintained in the face of ... -
Ecological memory at millennial time-scales: the importance of data constraints, species longevity and niche features
(Peer reviewed; Journal article, 2020)Ecological memory describes how antecedent conditions drive the dynamics of an ecological system. Palaeoecological records are paramount to understand ecological memory at millennial time‐scales, but the concept is widely ... -
The ecological profile of Atlantic salmon escapees entering a river throughout an entire season: Diverse in escape history and genetic background, but frequently virus-infected
(Peer reviewed; Journal article, 2017-05)In 2014, 129 farmed salmon escapees captured in an upstream-migration trap located in the river Etne, western Norway, were investigated for viral infections, age at escape, size, and genetic composition. The frequency of ... -
Ecological ramifications of adaptation to size-selective mortality
(Journal article; Peer reviewed, 2021)Size-selective mortality due to harvesting is a threat to numerous exploited species, but how it affects the ecosystem remains largely unexplored. Here, we used a pond mesocosm experiment to assess how evolutionary responses ... -
Ecological significance of extracellular vesicles in modulating host-virus interactions during algal blooms
(Journal article; Peer reviewed, 2021)Extracellular vesicles are produced by organisms from all kingdoms and serve a myriad of functions, many of which involve cell-cell signaling, especially during stress conditions and host-pathogen interactions. In the ... -
Ecology of testate amoebae (Protista) in south-central Alaska peatlands: building transfer-function models for palaeoenvironmental studies
(Peer reviewed; Journal article, 2006)Testate amoebae are valuable indicators of peatland hydrology and have been used in many palaeoclimatic studies in peatlands. Because the species' ecological optima may vary around the globe, the development of transfer ... -
Ecosystem consequences of multi-trait response to environmental changes in Japanese medaka, Oryzias latipes
(Journal article; Peer reviewed, 2020)Intraspecific trait variation has large effects on the ecosystem and is greatly affected by human activities. To date, most studies focused on single-trait analyses, while considering multiple traits is expected to better ... -
Ecosystem model for evaluating potential cod production in a west Norwegian fjord
(Peer reviewed; Journal article, 1992-12-08)The carrying capacity for cod in a Norwegian fjord was analysed by means of a simulation model. Four age groups of cod were represented as well as the maln prey groups labrids, gobies and benthic organisms. These groups ... -
Ecosystem Resilience and Threshold Response in the Gala´pagos Coastal Zone
(Peer reviewed; Journal article, 2011-07-21)Background: The Intergovernmental Panel on Climate Change (IPCC) provides a conservative estimate on rates of sea-level rise of 3.8 mm yr21 at the end of the 21st century, which may have a detrimental effect on ecologically ... -
Ecosystem services show variable responses to future climate conditions in the Colombian páramos
(Journal article; Peer reviewed, 2021)Background: The páramos, the high-elevation ecosystems of the northern Andes, are well-known for their high species richness and provide a variety of ecosystem services to local subsistence-based communities and regional ... -
An ecosystem-scale litter and microplastics monitoring plan under the Arctic Monitoring and Assessment Programme (AMAP)
(Journal article; Peer reviewed, 2022)Lack of knowledge on levels and trends of litter and microplastics in the Arctic, is limiting our understanding of the sources, transport, fate, and effects is hampering global activities aimed at reducing litter and ... -
Ecotypes or Genotypes? The Status of the Currently Recognized Infraspecific Taxa of Acacia tortilis (Forssk.) : Hayne Growing in the Red Sea Hills, Sudan and Egypt
(Doctoral thesis, 2007-12-07)This study focuses on the Acacia tortilis species complex and the taxonomic relationship among its currently recognized infraspecific (A. tortilis ssp. tortilis, ssp raddiana and ssp. spirocarpa) in the Red Sea Hills of ...