Results 21 to 30 of about 42,621 (180)

Persistent organic pollutants in biota samples collected during the Ymer-80 expedition to the Arctic [PDF]

Polar Research, 2015
During the 1980 expedition to the Arctic with the icebreaker Ymer, a number of vertebrate species were sampled for determination of persistent organic pollutants.
Henrik Kylin, Johan Hammar, Jacques Mowrer, Henk Bouwman, Carl Edelstam, Mats Olsson, Sören Jensen   +6 more
doaj   +1 more source

Evaluation of turbulent dissipation rate retrievals from Doppler Cloud Radar [PDF]

, 2012
Turbulent dissipation rate retrievals from cloud radar Doppler velocity measurements are evaluated using independent, in situ observations in Arctic stratocumulus clouds. In situ validation data sets of dissipation rate are derived using sonic anemometer
Azevedo, C.D.R., Borges, F.I.G., Cebrián, S., Cervera, A., Conde, C.A.N., Cárcel, S., Diesburg, M., dos Santos, J.M.F., Díaz, J., Esteve, R., Fernandes, L.M.P., Ferrario, P., Ferreira, A.L., Freitas, E.D.C., Gehman, V.M., Goldschmidt, A., González-Díaz, D., Gutiérrez, R.M., Gómez-Cadenas, J.J., Hauptman, J., Henriques, C.A.O., Hernando Morata, J.A., Labarga, L., Laing, A., Lebrun, P., Liubarsky, I., Lorca, D., Losada, M., López-March, N., Martín-Albo, J., Martínez, A., Martínez-Lema, G., Miller, T., Monrabal, F., Monserrate, M., Monteiro, C.M.B., Mora, F.J., Moutinho, L.M., Muñoz Vidal, J., Nebot-Guinot, M., Novella, P., Nygren, D., Para, A., Perez Aparicio, J.L., Perez, J., Querol, M., Renner, J., Ripoll, L., Rodríguez, J., Santos, F.P., Serra, L., Shuman, D., Simón, A., Sofka, C., Sorel, M., Stiegler, T., Toledo, J.F., Torrent, J., Tsamalaidze, Z., Veloso, J.F.C.A., Villar, J.A., Webb, R., White, J.T., Yahlali, N., Yepes-Ramírez, H., Álvarez, V.   +65 more
core   +10 more sources

Observing the Arctic: A comparison of environmental DNA (eDNA) and electrofishing for monitoring Arctic char and Atlantic salmon

Environmental DNA, 2023
The current knowledge about fish biodiversity and species distributions in Arctic freshwater systems is generally limited. This contrasts the clear urgency for more accurate biodiversity data to assess the effects of future ecosystem challenges such as ...
Magnus W. Jacobsen, Rasmus Nygaard, Brian K. Hansen, Mala Broberg, Michael M. Hansen, Rasmus Hedeholm, Einar E. Nielsen   +6 more
doaj   +1 more source

Consecutive earthquakes temporarily restructured the zooplankton community in an Alpine Lake [PDF]

, 2012
Two consecutive earthquakes temporary changed a zooplankton community in a high-mountain Lake Krn (altitude 1383 m a.s.l.). It was dominated by the eurytherm copepod, Cyclops vicious, until 1998, when the first earthquake hit the lake (EMS = 5.6).
Brancelj, Anton, Brancelj, Irena Rejec, Dumont, Henri, Mezek, Tadej, Źibrat, Uroś   +4 more
core   +1 more source

Expression of DNA repair genes in arctic char (Salvelinus alpinus) from Bjørnøya in the Norwegian Arctic

Ecotoxicology and Environmental Safety, 2021
High levels of organochlorines (OCs) have been measured in arctic char (Salvelinus alpinus) from Lake Ellasjøen on Bjørnøya, Norway (74.30°N, 19.0°E). In a nearby lake, Laksvatn, the OC-levels in arctic char were low. A previous study has shown that char
Helene Inderberg, Eirik D. Neerland, Molly McPartland, Torfinn Sparstad, Jenny Bytingsvik, Vladimir A. Nikiforov, Anita Evenset, Åse Krøkje   +7 more
doaj   +1 more source

Changing environmental conditions have altered the feeding ecology of two keystone Arctic marine predators

Scientific Reports, 2023
Environmental change in the Arctic has impacted the composition and structure of marine food webs. Tracking feeding ecology changes of culturally-valued Arctic char (Salvelinus alpinus) and ringed seals (Pusa hispida) can provide an indication of the ...
Matthew A. Anderson, Aaron T. Fisk, Rodd Laing, Marie Noël, Joey Angnatok, Jane Kirk, Marlene Evans, Liz Pijogge, Tanya M. Brown   +8 more
doaj   +1 more source

Arctic char occurrence and abundance using environmental DNA

Freshwater Biology, 2023
Abstract Our ability to rapidly monitor species is essential for effective resource management and for establishing conservation practices. Current monitoring practices for many fish species are not effective across multiple habitats due to limited resources, permit restrictions, etc.
Mathew Seymour, Antony Smith
openaire   +1 more source

Assessment of inter-regional dietary differences in anadromous Arctic char (Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators

Arctic Science
Arctic char (Salvelinus alpinus) is a salmonid fish that is the second-most consumed country food species by Nunavimmiut. Its nutritional quality is determined by omega-3 fatty acids and carotenoid pigments.
Sara Bolduc, Mélanie Lemire, Jean-Éric Tremblay, Marianne Falardeau, Xavier Dallaire, Mylène Brochu, Justine Legros, Jean-Sébastien Moore   +7 more
doaj   +3 more sources

Constraining recent lead pollution sources in the North Pacific using ice core stable lead isotopes [PDF]

, 2012
Trends and sources of lead (Pb) aerosol pollution in the North Pacific rim of North America from 1850 to 2001 are investigated using a high-resolution (subannual to annual) ice core record recovered from Eclipse Icefield (3017 masl; St.
Gross, B H, Handley, M J, Kreutz, K, McConnell, J R, Osterberg, Erich, Wake, Cameron P, Yalcin, Kaplan   +6 more
core   +2 more sources

Recruitment pulses induce cannibalistic giants in Arctic char [PDF]

Journal of Animal Ecology, 2006
Summary Recent theoretical studies on the population dynamic consequences of cannibalism have focused on mechanisms behind the emergence of large cannibals (giants) in size‐structured populations. Theoretically, giants emerge when a strong recruiting cohort imposes competition induced mortality on stunted adults, but also provides a profitable ...
openaire   +2 more sources