Search Results - "Kaartvedt, S"

Large mesopelagic fishes biomass and trophic efficiency in the open ocean by Irigoien, Xabier, Klevjer, T. A., Røstad, A., Martinez, U., Boyra, G., Acuña, J. L., Bode, A., Echevarria, F., Gonzalez-Gordillo, J. I., Hernandez-Leon, S., Agusti, S., Aksnes, D. L., Duarte, C. M., Kaartvedt, S.

“…With a current estimate of ~1,000 million tons, mesopelagic fishes likely dominate the world total fishes biomass. However, recent acoustic observations show…”
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Large scale patterns in vertical distribution and behaviour of mesopelagic scattering layers by Klevjer, T. A., Irigoien, X., Røstad, A., Fraile-Nuez, E., Benítez-Barrios, V. M., Kaartvedt, S.

“…Recent studies suggest that previous estimates of mesopelagic biomasses are severely biased, with the new, higher estimates underlining the need to unveil…”
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Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands by Ariza, A., Landeira, J.M., Escánez, A., Wienerroither, R., Aguilar de Soto, N., Røstad, A., Kaartvedt, S., Hernández-León, S.

“…Diel vertical migration (DVM) facilitates biogeochemical exchanges between shallow waters and the deep ocean. An effective way of monitoring the migrant biota…”
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Seasonality and toxin production of Pyrodinium bahamense in a Red Sea lagoon by Banguera-Hinestroza, E., Eikrem, W., Mansour, H., Solberg, I., Cúrdia, J., Holtermann, K., Edvardsen, B., Kaartvedt, S.

“…Harmful algal blooms of the dinoflagellate Pyrodinium bahamense have caused human and economic losses in the last decades. This study, for the first time,…”
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Global effects of moon phase on nocturnal acoustic scattering layers by Prihartato, Perdana K., Irigoien, Xabier, Genton, Marc G., Kaartvedt, Stein

“…The impact of moon phase on the global nocturnal vertical distribution of acoustic scattering layers (SLs) in the upper 200 m was studied during the Malaspina…”
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Life history of Calanus finmarchicus in the Norwegian Sea in relation to planktivorous fish by Kaartvedt, S.

“…This paper is focused on the potential impact of planktivorous fish in shaping the life history of Calanus finmarchicus in the Norwegian Sea. It is suggested…”
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Coastal water darkening and implications for mesopelagic regime shifts in Norwegian fjords by Aksnes, Dag L., Dupont, Nicolas, Staby, Arved, Fiksen, Øyvind, Kaartvedt, Stein, Aure, Jan

“…The light regime of the water column has a strong structuring effect on aquatic food webs and it has been previously hypothesized that coastal water darkening…”
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Diel Vertical Migration of the Deep-Water Jellyfish Periphylla periphylla Simulated as Individual Responses to Absolute Light Intensity by Dupont, Nicolas, Klevjer, T. A., Kaartvedt, S., Aksnes, D. L.

“…We evaluate the hypothesis that the vertical migration of Periphylla periphylla is governed by its sensitivity to light intensity. By applying an…”
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Diel patterns in stage-specific vertical migration of Calanus finmarchicus in habitats with midnight sun by Dale, T., Kaartvedt, S.

“…Diel vertical migration (DVM) and feeding of Calanus finmarchicus were studied in relation to phytoplankton biomass and predator abundance along a latitudinal…”
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Assessing feeding of a carnivorous copepod using species-specific PCR by Vestheim, H, Edvardsen, B, Kaartvedt, S

“…The polymerase chain reaction (PCR) offers a sensitive and selective way to detect trace amounts of biological remnants. Here, we show that this simple…”
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In situ swimming behaviour of individual mesopelagic fish studied by split-beam echo target tracking by Torgersen, T., Kaartvedt, S.

“…The mesopelagic fishes Müller's pearlside (Maurolicus muelleri) and northern lanternfish (Benthosema glaciale) were studied in near-surface water during their…”
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Vertical distribution and feeding patterns in fish foraging on the krill Meganyctiphanes norvegica by Onsrud, M.S.R., Kaartvedt, S., Røstad, A., Klevjer, T.A.

“…Fish and krill were studied at a 120 m deep site in the Oslofjord, Norway. Herring (Clupea harengus), whiting (Merlangius merlangus), and Norway pout…”
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Spatially structured interactions between a migratory pelagic predator, the Norwegian spring-spawning herring Clupea harengus L., and its zooplankton prey by Olsen, E. M., Melle, W., Kaartvedt, S., Holst, J. C., Mork, K. A.

“…Spring‐spawning herring Clupea harengus was patchily distributed over large parts of the Norwegian Sea in May 1995–2005, during the early phase of the annual…”
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Distribution and feeding of the carnivorous copepod Paraeuchaeta norvegica in habitats of shallow prey assemblages and midnight sun by FLEDDUM, A, KAARTVEDT, S, ELLERTSEN, B

“…Paraeuchaeta norvegica was found to be widely distributed in the Norwegian Sea. They were least abundant in north-western areas, but otherwise no clear…”
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Diel vertical migration of the krill Meganyctiphanes norvegica in relation to physical environment, food and predators by Onsrud, Maren S. R., Kaartvedt, Stein

“…Acoustic scattering layers of Meganyctiphanes norvegica in the Oslofjord, Norway, typically stayed below ∼70 m during the day. They remained below prevailing…”
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Taxonomic and systematic assessment of planktonic copepods using mitochondrial COI sequence variation and competitive, species-specific PCR by BUCKLIN, A, GUARNIERI, M, HILL, R. S, BENTLEY, A. M, KAARTVEDT, S

“…Accurate taxonomic identification of species at all life stages is critical to understand and predict the processes that together determine marine community…”
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Population genetics of drifting (Calanus spp.) and resident (Acartia clausi) plankton in Norwegian fjords by Bucklin, A., Kaartvedt, S., Guarnieri, M., Goswami, U.

“…Kaartvedt distinguished between drifting and resident plankton and hypothesized that the latter were distinguished by their ability to maintain their…”
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Large-scale oceanic distribution and population structure of Calanus finmarchicus, in relation to physical environment, food and predators by DALE, T, KAARTVEDT, S, ELLERTSEN, B, AMUNDSEN, R

“…The investigation was carried out from 62degreesN to 73degreesN and from 14degreesE to 11degreesW in the Norwegian Sea during 19 June-12 July 1997. Regional…”
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Efficient trawl avoidance by mesopelagic fishes causes large underestimation of their biomass by Kaartvedt, Stein, Staby, Arved, Aksnes, Dag L.

“…Mesopelagic fishes occur in all the world’s oceans, but their abundance and consequently their ecological significance remains uncertain. The current global…”
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Vertical distribution and feeding of the copepod Chiridius armatus by Schoyen, M, Kaartvedt, S

“…Adult females of the copepod Chiridius armatus inhabited the lower half of a 200-m water column during winter and spring. Their distribution became gradually…”
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