A5014244230- Marine and fisheries research
- Fish Ecology and Management Studies
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Marine animal studies overview
- Crustacean biology and ecology
- Animal Behavior and Reproduction
- Ichthyology and Marine Biology
- Coastal and Marine Management
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Reproductive biology and impacts on aquatic species
- Wildlife Ecology and Conservation
- Genetic and phenotypic traits in livestock
- Genetic diversity and population structure
- Economic and Environmental Valuation
- Aquaculture Nutrition and Growth
- Marine and coastal plant biology
- Arctic and Antarctic ice dynamics
- European and International Law Studies
- Fish Biology and Ecology Studies
- Food Industry and Aquatic Biology
- Marine and Offshore Engineering Studies
- Regulation and Compliance Studies
- Gait Recognition and Analysis
Norwegian Institute of Marine Research
2015-2024
University of Agder
2015-2024
James Cook University
2004-2013
University of Oslo
2009-2012
Marine protected areas (MPAs) are increasingly implemented as tools to conserve and manage fisheries target species. Because there opportunity costs conservation, is a need for science-based assessment of MPAs. Here, we present one the northernmost documentations MPA effects date, demonstrated by replicated before-after control-impact (BACI) approach. In 2006, MPAs were along Norwegian Skagerrak coast offering complete protection shellfish partial fish. By 2010, European lobster (Homarus...
Harvesting wild populations may contrast or reinforce natural agents of selection and potentially cause evolutionary changes in life-history traits such as growth maturation. Harvest also act on behavioral traits, although this field research has so far received less attention. We used acoustic tags a network receivers to monitor the behavior fate individual Atlantic cod (Gadus morhua, N = 60) their habitat Norwegian Skagerrak coast. Fish with strong diel vertical migration, alternating...
Habitat selection is a complex process, which involves behavioural decisions guided by the multiple needs and constraints faced individuals. Climate-induced changes in environmental conditions may alter those trade-offs resulting habitat use patterns. In this study, we investigated effect of sea temperature on acoustically tagged Atlantic cod (Gadus morhua) at Norwegian Skagerrak coast. Significant relationships between ocean were found. Under favourable thresholds (<16 °C), selected...
Abstract Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of flow allow for adaptation speciation. Chromosomal inversions act as an important mechanism maintaining barriers, yet their role in with not entirely understood. Here, we revisit question whether play a connected marine fish Atlantic cod ( Gadus morhua ),...
Although growing evidence supports the idea that animal personality can explain plasticity in response to changes social environment, it remains be tested whether spatial responses of individuals face natural environmental fluctuations. This is a major challenge ecology and evolution as dynamics link individual- population-level processes. In this study, we investigated potential individual personalities predict differences fish behaviour wild. Specifically, our goal was answer if space use...
Abstract Acoustic telemetry has become a popular means of obtaining individual behavioural data from wide array species in marine and freshwater systems. Fate information is crucial to understand important aspects population dynamics such as mortality, predation or dispersal rates. Here we present method infer fate acoustic arrays receivers with overlapping detection ranges. Our depends exclusively on animal movements the characteristics configuration equipment. By answering limited number...
Understanding the responses of aquatic animals to temperature variability is essential predict impacts future climate change and inform conservation management. Most ectotherms such as fish are expected adjust their behaviour avoid extreme temperatures minimize acute changes in body temperature. In coastal Skagerrak, Norway, sea surface (SST) ranges seasonally from 0 over 20°C, representing a challenge community which includes cold-, cool- warm-water affinity species. By acoustically...
Abstract The International Union for Conservation of Nature (IUCN) Red List identifies threatened and endangered species is a key instrument in global biodiversity conservation efforts. Our understanding the structure value genetic below level rapidly increasing. Nonetheless, IUCN assessment criteria overlook variation within species. Here, we address this blind spot discuss principles status classification relative to intraspecific biodiversity. We focus on coastal species, which thrive...
Marine reserves are perceived as a critical component in successful rebuilding of overharvested marine populations. Such efforts can be particularly species with limited movement rates. However, long-term data on is sparse for most species. Here, we investigated space use European lobster ( Homarus gammarus ) by ultrasonic tracking reserve the Norwegian Skagerrak coast from September 2006 to August 2007. Over period, 95% tagged lobsters remained either within or near boundaries. Home range...
Tracking data have previously been used to define animal movement patterns through two-dimensional (2D) kernel utilization distributions and separate analysis of vertical locations. Here we describe the use three-dimensional (3D) estimate volumetric space individuals based on tracking overlap in activity between individuals. Data from European eels ( Anguilla anguilla ) Norwegian coastal waters were compare information conveyed by 2D 3D estimates utility this approach for aquatic species....
Understanding responses of marine species to temperature variability is essential predict impacts future climate change in the oceans. Most ectotherms are expected adjust their behavior avoid extreme temperatures and minimize acute changes body temperature. However, measuring such behavioral plasticity wild challenging. Combining 4 years telemetry-derived data on juvenile adult (30-80 cm) Atlantic cod (Gadus morhua), situ ocean measurements, we found a significant effect sea depth use...
Abstract Removing individuals from a wild population can affect the availability of prospective mates and outcome competitive interactions, with subsequent effects on mating patterns sexual selection. Consequently, rate harvest‐induced evolution is predicted to be strongly dependent strength dynamics selection, yet there limited empirical knowledge interplay between selective harvesting systems exploited species. In this study, we used genetic parentage assignment compare highly valued...
In this contribution, we propose fishery driven predator release as the cause for largest grazing event ever observed in NE Atlantic. Based on evolving appreciation of limits to population connectivity, published and previously unpublished data, discuss whether overfishing caused a grazer bloom sea urchin (Strongylocentrotus droebachiensis) resulting overgrazing more than 2000 km2 kelp (Laminaria hyperborea) forest along Norwegian Russian coasts during 1970 s. We show that coastal fisheries...
Abstract Impacts of climate change on ocean productivity sustaining world fisheries are predominantly negative but vary greatly among regions. We assessed how 39 resources—ranging from data‐poor to data‐rich stocks—in the North East Atlantic most likely affected under intermediate emission scenario RCP4.5 towards 2050. This region is one productive waters in subjected pronounced change, especially northernmost part. In this impact assessment, we applied a hybrid solution combining expert...
The effectiveness of Marine Protected Areas (MPAs) depends on the mobility populations that are target protection, with sedentary species likely to spend more time under protection even within small MPAs. However, little is understood about how individual variation in may influence risk crossing an MPA border, as well fitness costs associated being exposed spillover fisheries. Here we investigated repeatability spatial behaviour, its role determining probability at (i.e. fishery) and...
Animal body-size variation influences multiple processes in marine ecosystems, but habitat heterogeneity has prevented a comprehensive assessment of size across pelagic (midwater) and benthic (seabed) systems along anthropic gradients. In this work, we derive fish indicators from 17,411 stereo baited-video deployments to test for differences between responses remoteness human pressures effectiveness protected areas (MPAs). From records 823,849 individual fish, report divergent systems, with...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 400:165-173 (2010) - DOI: https://doi.org/10.3354/meps08397 Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus Even Moland1,2,*, Esben Moland Olsen2, Nils Christian Stenseth1,2 1Centre for Ecological Evolutionary Synthesis (CEES), Department of Biology,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 429:197-207 (2011) - DOI: https://doi.org/10.3354/meps09102 Activity patterns of wild European lobster Homarus gammarus in coastal marine reserves: implications for future reserve design Even Moland1,*, Esben Moland Olsen1,2, Halvor Knutsen1,2, Jan Atle Knutsen3, Svein Erik Enersen1, Carl André4, Nils Chr....
To ensure that marine protected areas (MPAs) benefit conservation and fisheries, the effectiveness of MPA designs has to be evaluated in field studies. Using an interdisciplinary approach, we empirically assessed design a network northern MPAs where fishing for European lobster (Homarus gammarus) is prohibited. First, demonstrate high level residency survival (50%) almost year (363 days) within MPAs, despite small sizes (0.5-1 km2). Second, limited export (4.7%) lobsters tagged (N = 1810)...
Fishing can have profound impacts on the ecology and evolution of marine populations. Understanding population-level changes ultimately depends knowledge about individual survival how it varies in time space. We used acoustic tags a network receivers to monitor behaviour fate European lobster (Homarus gammarus) exposed commercial recreational trap fisheries Norwegian Skagerrak coast. In August 2011, 50 male lobsters above minimum legal size were tagged monitored before during fishing season....
Marine recreational fishing is a popular outdoor activity. However, knowledge about the magnitude of catches relative to commercial in coastal fisheries generally sparse. Coastal Atlantic cod (Gadus morhua) target species for fishers North Atlantic. In Norway, are allowed use variety traps and nets as well long-line rod line when cod. From 2005 2013, 9729 (mean size: 40 cm, range: 15–93 cm) were tagged released Skagerrak, southeast Norway. Both high-reward (NOK 500) low-reward tags 50) used...