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Dag Lorents Aksness bilde

Dag Lorents Aksnes

Professor
  • E-postDag.Aksnes@uib.no
  • Telefon+47 55 58 44 78
  • Besøksadresse
    Thormøhlens gate 53 A/B
  • Postadresse
    Postboks 7803
    5020 Bergen
Vitenskapelig artikkel
  • Vis forfatter(e) (2021). Flexible behaviour in a mesopelagic fish (Maurolicus muelleri). ICES Journal of Marine Science. 1623-1635.
  • Vis forfatter(e) (2020). Vertical distribution and migration of mesopelagic scatterers in four north Atlantic basins. Deep-Sea Research Part II: Topical Studies in Oceanography. 11 sider.
  • Vis forfatter(e) (2020). Structure and functioning of four North Atlantic ecosystems - A comparative study. Deep-Sea Research Part II: Topical Studies in Oceanography. 1-13.
  • Vis forfatter(e) (2019). Unclear associations between small pelagic fish and jellyfish in several major marine ecosystems. Scientific Reports. 1-12.
  • Vis forfatter(e) (2019). Multi-decadal warming of Atlantic water and associated decline of dissolved oxygen in a deep fjord. Estuarine, Coastal and Shelf Science. 8 sider.
  • Vis forfatter(e) (2019). Light comfort zone in a mesopelagic fish emerges from adaptive behaviour along a latitudinal gradient. Marine Ecology Progress Series. 161-174.
  • Vis forfatter(e) (2019). Herding mesopelagic fish by light. Marine Ecology Progress Series. 225-231.
  • Vis forfatter(e) (2019). Enlightening the ocean’s twilight zone. ICES Journal of Marine Science. 803-812.
  • Vis forfatter(e) (2019). Centennial decline in North Sea water clarity causes strong delay in phytoplankton bloom timing. Global Change Biology. 3946-3953.
  • Vis forfatter(e) (2018). Why growth of nutrient-limited micro-organisms should have low-temperature sensitivity. The ISME Journal. 557-558.
  • Vis forfatter(e) (2018). First reports of a mass mortality event across multiple life stages in a mesopelagic jellyfish in high latitude coastal waters. Marine Ecology. 1-11.
  • Vis forfatter(e) (2018). Caught in broad daylight: Topographic constraints of zooplankton depth distributions. Limnology and Oceanography. 849-859.
  • Vis forfatter(e) (2017). Phytoplankton size scaling with nutrient concentration. Marine Ecology Progress Series. 59-64.
  • Vis forfatter(e) (2017). Light penetration structures the deep acoustic scattering layers in the global ocean. Science Advances. 6 sider.
  • Vis forfatter(e) (2017). Jellyfish distribute vertically according to irradiance. Journal of Plankton Research. 280-289.
  • Vis forfatter(e) (2017). Changing weather causes behavioral responses in the lower mesopelagic. Marine Ecology Progress Series. 259-263.
  • Vis forfatter(e) (2016). Scaling laws in phytoplankton nutrient uptake affinity. Frontiers in Marine Science. 1-6.
  • Vis forfatter(e) (2016). Light comfort zones of mesopelagic acoustic scattering layers in two contrasting optical environments. Deep Sea Research Part I: Oceanographic Research Papers. 1-6.
  • Vis forfatter(e) (2016). Evidence for light-controlled migration amplitude of a sound scattering layer in the Norwegian Sea. Marine Ecology Progress Series. 45-52.
  • Vis forfatter(e) (2015). Sverdrup critical depth and the role of water clarity in Norwegian Coastal Water. ICES Journal of Marine Science. 2041-2050.
  • Vis forfatter(e) (2015). Seasonal patterns in the nocturnal distributionand behavior of the mesopelagic fish Maurolicus muelleri at high latitudes. Marine Ecology Progress Series. 189-200.
  • Vis forfatter(e) (2014). The emotion system promotes diversity and evolvability. Proceedings of the Royal Society of London. Biological Sciences.
  • Vis forfatter(e) (2014). Modelling emergent trophic strategies in plankton. Journal of Plankton Research. 862-868.
  • Vis forfatter(e) (2014). Lévy night flights by the jellyfish Periphylla periphylla. Marine Ecology Progress Series. 121-130.
  • Vis forfatter(e) (2014). Large mesopelagic fishes biomass and trophic efficiency in the open ocean. Nature Communications. 10 sider.
  • Vis forfatter(e) (2014). Evidence of diel vertical migration in Mnemiopsis leidyi. PLOS ONE. 10 sider.
  • Vis forfatter(e) (2013). Trait-based models of nutrient uptake in microbes extend the Michaelis-Menten framework. Limnology and Oceanography. 193-202.
  • Vis forfatter(e) (2013). Sensitivity of euphotic zone properties to CDOM variations in marine ecosystem models. Ecological Modelling. 16-22.
  • Vis forfatter(e) (2013). Environmental constraints of the invasive Mnemiopsis leidyi in Scandinavian waters. Limnology and Oceanography. 37-48.
  • Vis forfatter(e) (2013). Effects of the emotion system on adaptive behavior. The American Naturalist. 689-703.
  • Vis forfatter(e) (2013). Centennial changes in water clarity of the Baltic Sea and the North Sea. Estuarine, Coastal and Shelf Science. 282-289.
  • Vis forfatter(e) (2012). Relationship between fish and jellyfish as a function of eutrophication and water clarity. Marine Ecology Progress Series. 73-85.
  • Vis forfatter(e) (2012). Internal wave-mediated shading causes frequent vertical migrations in fishes. Marine Ecology Progress Series. 1-10.
  • Vis forfatter(e) (2012). Efficient trawl avoidance by mesopelagic fishes causes large underestimation of their biomass. Marine Ecology Progress Series. 1-6.
  • Vis forfatter(e) (2012). Effects of bottom depth and water clarity on the vertical distribution of Calanus spp. Journal of Plankton Research. 263-266.
  • Vis forfatter(e) (2011). Inherent and apparent traits in microbial nutrient uptake. Marine Ecology Progress Series. 41-51.
  • Vis forfatter(e) (2011). Follow the light-diurnal and seasonal variations in vertical distribution of the mesopelagic fish Maurolicus muelleri. Marine Ecology Progress Series. 265-273.
  • Vis forfatter(e) (2010). Simulation of optically conditioned retention and mass occurrences of Periphylla periphylla. Journal of Plankton Research. 773-783.
  • Vis forfatter(e) (2010). Phantom hunter of the fjords: Camouflage by counterillumination in a shark (Etmopterus spinax). Journal of Experimental Marine Biology and Ecology. 28-32.
  • Vis forfatter(e) (2009). Multi-decadal shoaling of the euphotic zone in the southern sector of the California Current System. Limnology and Oceanography. 1272-1281.
  • Vis forfatter(e) (2009). Diel vertical migration of the deep-water jellyfish Periphylla periphylla simulated as individual responses to absolute light intensity. Limnology and Oceanography. 1765-1775.
  • Vis forfatter(e) (2009). Coastal water darkening and implications for mesopelagic regime shifts in Norwegian fjords. Marine Ecology Progress Series. 39-49.
  • Vis forfatter(e) (2008). Vertical distribution of Calanus spp. and Metridia longa at four Arctic locations. Marine Biology Research. 193-207.
  • Vis forfatter(e) (2008). Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae). Marine Biology. 653-659.
  • Vis forfatter(e) (2007). Optical effect on the nitracline in a coastal upwelling area. Limnology and Oceanography. 1179-1187.
  • Vis forfatter(e) (2007). Evidence for visual constraints in large marine fish stocks. Limnology and Oceanography. 198-203.
  • Vis forfatter(e) (2007). Endostyle cell recruitment as a frame of reference for development and growth in the urochordate Oikopleura dioica. The Biological Bulletin. 325-334.
  • Vis forfatter(e) (2007). Causes for mass occurrences of the jellyfish Periphylla periphylla: a hypothesis that involves optically conditioned retention. Journal of Plankton Research. 157-167.
  • Vis forfatter(e) (2006). Integrating developmental clocking and growth in a life-history model for the planktonic chordate Oikopleura dioica. Marine Ecology Progress Series. 81-88.
  • Vis forfatter(e) (2006). Concurrent temporal patterns in light absorbance and fish abundance. Marine Ecology Progress Series. 181-186.
  • Vis forfatter(e) (2006). A model of developmental time applied to planktonic embryos. Marine Ecology Progress Series. 75-80.
  • Vis forfatter(e) (2004). Predation efficiency in visual and tactile zooplanktivores. Limnology and Oceanography. 69-75.
  • Vis forfatter(e) (2004). Optical control of fish and zooplankton populations. Limnology and Oceanography. 233-238.
  • Vis forfatter(e) (2002). The influence of turbidity on growth and survival of fish larvae: a numerical analysis. Hydrobiologia. 49-59.
  • Vis forfatter(e) (2002). Stage-sepcific mortality of Calanus spp. under different predation regimes. Limnology and Oceanography. 636-645.
  • Vis forfatter(e) (2002). Resource allocation between somatic growth and reproductive output in the pelagic chordate Oikopleura dioica allows opportunistic response to nutritional variation. Marine Ecology Progress Series. 83-91.
  • Vis forfatter(e) (2002). Production enhancement by artificial upwelling: a simulation study. Hydrobiologia. 177-190.
  • Vis forfatter(e) (2001). Vertical distribution and mortality of overwintering Calanus. Limnology and Oceanography. 1494-1510.
  • Vis forfatter(e) (1999). Fish or jellies - a question of visibility? Limnology and Oceanography. 1352-1357.
  • Vis forfatter(e) (1998). Modelling the influence of light, turbulence and ontogeny on ingestion rates in larval cod and herring. Fisheries Oceanography. 355-363.
  • Vis forfatter(e) (1998). Advection and zooplankton fitness. Sarsia. 87-93.
  • Vis forfatter(e) (1997). The significance of optical properties in competition among visual and tactile planktivores: a theoretical study. Ecological Modelling. 123-136.
  • Vis forfatter(e) (1997). Influence of dissolved silicate on vertical flux of particulate biogenic matter. Marine Pollution Bulletin. 10-21.
  • Vis forfatter(e) (1997). Estimation techniques used in studies of copepod population dynamics - a review of underlying assumptions. Sarsia. 279-296.
  • Vis forfatter(e) (1997). A revised model of visual range in fish. Sarsia. 137-147.
  • Vis forfatter(e) (1996). The interrelationship of copepod fecundity and mortality. Limnology and Oceanography. 1470-1477.
  • Vis forfatter(e) (1996). Natural mortality, fecundicity and development time in marine planktonic copepods - implications of behaviour. Marine Ecology Progress Series. 315-316.
  • Vis forfatter(e) (1996). Circulation patterns in the North Atlantic and possible impact on population dynamics of Calanus finmarchicus. Ophelia : International Journal of Marine Biology. 7-28.
  • Vis forfatter(e) (1996). A vertical life table approach to zooplankton mortality estimation. Limnology and Oceanography. 1461-1469.
  • Vis forfatter(e) (1995). Simulated carrying capacities of fish in Norwegian fjords. Fisheries Oceanography. 17-32.
  • Vis forfatter(e) (1995). Modelling the primary production in the North Sea using a coupled three-dimensional physical-chemical-biological ocean model. Estuarine, Coastal and Shelf Science. 545-565.
  • Vis forfatter(e) (1995). Ecological modelling in coastal waters: Towards predictive physical -chemical-biological simulation models. Ophelia : International Journal of Marine Biology. 5-36.
  • Vis forfatter(e) (1995). A surface-dependent gastric evacuation model for fish. Journal of Fish Biology. 679-695.
  • Vis forfatter(e) (1994). Visual predators, environmental variables and zooplankton mortality risk. Vie et milieu (1980). 1-9.
  • Vis forfatter(e) (1994). Representation of Emiliania huxleyi in phytoplankton simulation models. A first approach. Sarsia. 291-300.
  • Vis forfatter(e) (1994). An experimental study on the influence of feeding versus predation risk in the habitat choice of juvenile and adult two-spotted goby Gobiusculus flavescens (Fabricius). Journal of Experimental Marine Biology and Ecology. 69-79.
  • Vis forfatter(e) (1993). Winter distribution and migration of the sound Seaherring layers, Zooplankton and microncroton in Masfjorden, Norway. Marine Ecology Progress Series. 35-50.
  • Vis forfatter(e) (1993). Variable generation times and Darwinian fitness measures. Evolutionary Ecology. 233-239.
  • Vis forfatter(e) (1993). Modelling the significance of zooplankton grazing for export production. Limnology and Oceanography. 978-985.
  • Vis forfatter(e) (1993). Food, predation risk and shelter: an experimental study on the distribution of adult two-spotted goby Gobiusculus flavescens (Fabricius). Journal of Experimental Marine Biology and Ecology. 203-216.
  • Vis forfatter(e) (1993). A theoretical model of aquatic visual feeding. Ecological Modelling. 233-250.
  • Vis forfatter(e) (1992). Simulation of the vertical distribution of the mesopelagic fish, Maurolicus muelleri (Gmelin) by stochastic dynamic optimization. Journal of Fish Biology. 181-182.
  • Vis forfatter(e) (1992). Silicate as regulating nutrient in phytoplankton competition. Marine Ecology Progress Series. 281-289.
  • Vis forfatter(e) (1992). Ontogeny, season and trade-offs: vertical distribution of the mesopelagic fish Maurolicus muelleri. Sarsia. 253-261.
  • Vis forfatter(e) (1992). Ecosystem model for evaluating potential cod production in a west Norwegian fjord. Marine Ecology Progress Series.
  • Vis forfatter(e) (1992). Does freshwater discharge cause mortality of fjord-living zooplankton? Estuarine, Coastal and Shelf Science. 305-313.
  • Vis forfatter(e) (1992). A conceptual model of distribution of capelin in the Barents Sea. Sarsia. 147-156.
  • Vis forfatter(e) (1991). Plankton succession and responses to manipulations in a marine basin for larval fish rearing. Marine Ecology Progress Series. 161-173.
  • Vis forfatter(e) (1991). Occurence of the toxic phytoflagellate Prymnesium parvum and associated fish mortality in a Norwegian fjord system. Canadian Journal of Fisheries and Aquatic Sciences.
  • Vis forfatter(e) (1991). Computer simulation of pelagic production in Masfjorden, western Norway, and its consequences for production of released O-group cod. ICES Marine Science Symposia. 161-175.
  • Vis forfatter(e) (1991). A theoretical model for nutrient uptake in phytoplankton. Marine Ecology Progress Series. 65-72.
  • Vis forfatter(e) (1990). Vertical distribution and trophic interactions of zooplankton and fish in Masfjorden, Norway. Sarsia. 65-81.
Rapport
  • Vis forfatter(e) (2013). Sognefjorden – en oppsummering av litteratur og kunnskapsstatus om fjordøkologi og vannkraftutbygging. Kunnskapsinnhenting. .
  • Vis forfatter(e) (2003). Environmental influence on fish stocks. 8. 8. .
  • Vis forfatter(e) (1998). Optimizing abatement strategies for eutrophication in the marine environment. .
  • Vis forfatter(e) (1997). Fresh water driven production in a fjord. 107. 107. .
  • Vis forfatter(e) (1997). Fresh water driven production in a fjord. 107. 107. .
  • Vis forfatter(e) (1997). Fresh water driven production in a fjord. 107. 107. .
  • Vis forfatter(e) (1994). Summary of data from enclosure experiments on phytoplankton blooms at Espegrend in 1986-1993. 36. 36. .
  • Vis forfatter(e) (1994). Produksjonsforhold for plankton og betraktninger om resipientkapasitet. Delrapport 2. Miljøundersøkelser i Gassasundet og Nautøysundet, Bømlo og Stord kommune. 16. 16. .
  • Vis forfatter(e) (1993). Utvikling av meteorologisk/fysisk koplet planteplanktonmodell for Nordsjøen. .
  • Vis forfatter(e) (1993). Produksjonsforhold for plankton. .
  • Vis forfatter(e) (1993). Modellering av fødeinntak og vertikal fordeling hos akvatiske visuelle predatorer. .
  • Vis forfatter(e) (1993). Kartlegging av Prymnesium parvum og giftige vannmasser ved hjelp av faste stasjoner i Hylsfjorden, Saudafjorden og Sandsfjorden. .
  • Vis forfatter(e) (1993). Feteksperimenter i sjøinnhegninger. .
  • Vis forfatter(e) (1993). F#/rpellets - synkehastighet og næringssaltlekkasje. .
  • Vis forfatter(e) (1993). Eksperimentelle og teoretiske studier av artssuksesjon i planteplanktonoppblomstringer. .
  • Vis forfatter(e) (1992). Vurdering av utsettingsmengde av laks i PUSH-programmet. .
  • Vis forfatter(e) (1992). Vannkraft og fjorder. Fysiske og biologiske konsekvenser av Ulla-Førre utbyggingen. .
  • Vis forfatter(e) (1992). Vannkraft og fjorder. Fysiske og biologiske konsekvenser av Ulla Førre utbyggingen. .
  • Vis forfatter(e) (1992). State-of-the-art of fjord and coastal water quality models. Rapport fra "Forskningsprogram om marin forurensing". .
  • Vis forfatter(e) (1992). Prymnesium parvum i Ryfylkefjordene. Delprosjekt 6: Felteksperimenter i sjøinnhegninger. .
  • Vis forfatter(e) (1992). Prymnesium parvum i Ryfylkefjordene. Delprosjekt 5: Kartlegging av P. Parvum og giftige vannmasser ved hjelp av faste stasjoner i Hylsfjorden, Saudafjorden og Sandsfjorden. .
  • Vis forfatter(e) (1992). Prymnesium parvum i Ryfylkefjordene. Delprosjekt 10: Forpellets-synkehastighet og næringssaltlekkasje. .
  • Vis forfatter(e) (1992). Miljøundersøkelser i Høylandssundet, Kvinnherad kommune. Delrapport 2. Produksjonsforhold for plankton. .
  • Vis forfatter(e) (1992). MOMS - Marint overvåkings- og modellsystem for fjorder og kyststrøk. .
  • Vis forfatter(e) (1992). Drivkrefter for bæreevner. .
  • Vis forfatter(e) (1991). Undersøkelser at Prymnesium parvum i Ryfylkefjordene 1991. SMR Rapport 1/91. Delrapport 7. .
  • Vis forfatter(e) (1991). The use of deep fjordwater at present and in the future in Norway. Report from "The international Forum on Deep Sea Water", 9-11 August, Kochi, Japan. .
  • Vis forfatter(e) (1991). Prymniesum parvum sett i lys av undersøkelser i Ryfylkefjordene 1972-1991. SMR rapport 1/91. Delrapport 3. .
  • Vis forfatter(e) (1988). Optimizing abatement strategies for eutrophication in the marine environment. .
Vitenskapelig foredrag
  • Vis forfatter(e) (2020). Could long-term shift in cod phenology be linked to terrestrial greening and coastal darkening?
  • Vis forfatter(e) (2020). Could long term shift in cod phenology be linked to terrestrial greening and coastal browning.
  • Vis forfatter(e) (2020). Could long term shift in cod phenology be linked to terrestrial greening and coastal browning.
  • Vis forfatter(e) (2020). Bathymetry Structures Predator-prey Dynamics between Zooplankton and Fish in Marine Pelagic Ecosystems.
  • Vis forfatter(e) (2019). Bathymetry structures predator-prey dynamics between zooplankton and fish in marine pelagic ecosystems.
  • Vis forfatter(e) (2015). Zooplankton and micronekton vertical distribution and diel vertical migration behaviour in the Northern North Atlantic Ocean.
  • Vis forfatter(e) (2014). Fish, jellyfish and Killing the Winner.
  • Vis forfatter(e) (2009). Visual detection in fish and the effect of water turbidity and - spectral composition.
  • Vis forfatter(e) (2002). Light controls predation and marine food web structure.
  • Vis forfatter(e) (2001). Is fish or jellies a question of visibility?
  • Vis forfatter(e) (2001). Is fish or jellies a question of visibility?
  • Vis forfatter(e) (2001). Complete acoustic recording of water column scatters and sea bed characteristics.
  • Vis forfatter(e) (2000). Production enhancement by artificial upwelling.
  • Vis forfatter(e) (1993). On the significance of light in the predation process.
  • Vis forfatter(e) (1993). Mathematical models for aquatic populations.
  • Vis forfatter(e) (1993). Ecological modelling of coastal waters.
  • Vis forfatter(e) (1992). Fitness value of the feeding, and vertical distribution of age groups of the mesopelagic fish Maurolicus muelleri.
  • Vis forfatter(e) (1992). A simulation model for evaluating the potential production of cod in a West Norwegian fjord.
Leder
  • Vis forfatter(e) (2017). Editorial: Modeling the plankton-enhancing the integration of biological knowledge and mechanistic understanding. Frontiers in Marine Science. 1-3.
Mastergradsoppgave
  • Vis forfatter(e) (2006). A descriptive study of the composition of plankton and fish in fjords with different sill depth.
Populærvitenskapelig artikkel
  • Vis forfatter(e) (1992). Modellering av fordeling, vekst og overlevelse av lodde i Barentshavet. Fisken og Havet. 21-21.
  • Vis forfatter(e) (1991). Økologi for kulturbetinget fiske. Fiskets Gang. 23-28.
  • Vis forfatter(e) (1991). Vertikalfordelinger: hvor dypt befinner fisk og plankton seg? Naturen. 195-202.
  • Vis forfatter(e) (1991). Fiskeoppdrett bidrag til oppblomstring av alger? Norsk Fiskeoppdrett. 36-38.
Doktorgradsavhandling
  • Vis forfatter(e) (2008). Simulated primary production in the Norwegian Sea – Interannual variability and impact of mesoscale activity.
  • Vis forfatter(e) (2008). Mesozooplankton distribution in Svalbard waters: Calanus spp. and its relationship to hydrographic variability.
  • Vis forfatter(e) (1987). Resource allocation in the study of copepod population dynamics. Investigations of copepod population dynamics. A simulation program : appendix.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Vis forfatter(e) (2018). The marine Environment. 31 sider.
  • Vis forfatter(e) (2018). Sampling gears and equipment. 46 sider.
Sammendrag/abstract
  • Vis forfatter(e) (2001). Complete acoustic recording of water column scatters and sea bed characteristics. Journal of the Acoustical Society of America. 2423-2423.
Poster
  • Vis forfatter(e) (2000). Bergen Marine Research Infrastructure.
Errata
  • Vis forfatter(e) (2016). Erratum to “Light comfort zones of mesopelagic acoustic scattering layers in two contrasting optical environments” (Deep-Sea Research (2016) 113(Part I) (1–6) (S0967063715300224) (10.1016/j.dsr.2016.02.020)). Deep Sea Research Part I: Oceanographic Research Papers. 162-164.
Vitenskapelig oversiktsartikkel/review
  • Vis forfatter(e) (2017). Limits to growth in the renewable energy sector. Renewable & Sustainable Energy Reviews. 769-774.

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