Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Sigrun Jonasdottir"'
Publikováno v:
Post, S, Jónasdóttir, S H, Andreasen, H, Ólafsdóttir, A H & Jansen, T 2021, ' Blue whiting Micromesistius poutassou diel feeding behaviour in the Irminger Sea ', Marine Ecology Progress Series, vol. 678, pp. 1-16 . https://doi.org/10.3354/meps13918
With warming ocean temperatures, the abundance of blue whiting Micromesistius poutassou is increasing in the waters around Greenland. However, in this region, knowledge about the species’ trophic role in the ecosystem is scarce. Consequently, we in
Publikováno v:
Lindegren, M, Thomas, M K, Jónasdóttir, S H, Nielsen, T G & Munk, P 2020, ' Environmental niche separation promotes coexistence among ecologically similar zooplankton species—North Sea copepods as a case study ', Limnology and Oceanography, vol. 65, no. 3, pp. 545-556 . https://doi.org/10.1002/lno.11322
Limnology and Oceanography
Limnology and Oceanography
Marine zooplankton are among the most diverse and abundant organisms on earth. Despite a great wealth of knowledge and research on their ecology, the processes promoting coexistence and maintaining their high diversity worldwide are poorly known. In
Lipid content in overwintering Calanus finmarchicus across the Subpolar Eastern North Atlantic Ocean
Publikováno v:
Jónasdóttir, S H, Wilson, R J, Gislason, A & Wilson, R J 2019, ' Lipid content in overwintering Calanus finmarchicus across the Subpolar Eastern North Atlantic Ocean ', Limnology and Oceanography, vol. 64, no. 5, pp. 2029-2043 . https://doi.org/10.1002/lno.11167
The boreal copepod Calanus finmarchicus accumulates lipid reserves during summer feeding in surface ocean waters, which enable it to stay at depth and survive famine during overwintering. Respiration of lipids during prolonged overwintering at ocean
Autor:
Mikael van Deurs, Kristian Ege Nielsen, Henrik Mosegaard, Ole Henriksen, Sigrun Jonasdottir, Asbjørn Christensen, Brian R. MacKenzie
Publikováno v:
Henriksen, O, Christensen, A, Jonasdottir, S, MacKenzie, B R, Nielsen, K E, Mosegaard, H & van Deurs, M 2018, ' Oceanographic flow regime and fish recruitment: reversed circulation in the North Sea coincides with unusual strong sandeel recruitment ', Marine Ecology-Progress Series, vol. 607, pp. 187-205 . https://doi.org/10.3354/meps12786
The chase for environmental descriptors of fish stock production is ongoing. Although, numerous correlations between environmental variables such as food abundance or sea surface temperature have been proposed in the past, few are operational in a fi
Publikováno v:
Trends in Food Science & Technology. 79:10-18
Background The continuous high expectations on the world's fisheries to provide products for human consumption is leading to increased overexploitation of fishing stocks. This unsustainable exploitation desperately calls for other suitable resources
Publikováno v:
Kristiansen, I, Jónasdóttir, S H, Gaard, E, Eliasen, S K & Hátún, H 2021, ' Seasonal variations in population dynamics of Calanus finmarchicus in relation to environmental conditions in the southwestern Norwegian Sea ', Deep-Sea Research Part I: Oceanographic Research Papers, vol. 171, 103508 . https://doi.org/10.1016/j.dsr.2021.103508
A seasonal study of the life cycle and reproductive biology of the copepod Calanus finmarchicus – the dominant zooplankton species and a key link between the lower and higher trophic levels within the southwestern Norwegian Sea - is presented. C. f
Publikováno v:
Limnology and Oceanography. 62:1155-1165
Lipid-fuelled overwintering by copepods can be a regionally important contribution to carbon sequestration in the deep oceans. Here, we estimate the contribution for Calanus hyperboreus, found in abundance in the northern reaches of the North Atlanti
Autor:
Sigrun Jonasdottir, Lasse Tor Nielsen, Hans van Someren Gréve, Irene Heilmann, Thomas Kiørboe, Martin Lindegren, Tim Spaanheden Dencker, Philipp Georg Brun, Laurene Pecuchet, Patrizio Mariani, Marina Pančić, Kasia M. Kenitz, Rob van Gemert, Mark Wejlemann Holm, André W. Visser, Ken Haste Andersen, Uffe Høgsbro Thygesen, Mark R. Payne, Subhendu Chakraborty, Anna Törnroos, P. Daniël van Denderen, Nicolas Azaña Schnedler-Meyer
Publikováno v:
Visser, A W, Brun, P, Chakraborty, S, Dencker, T S, van Denderen, P D, van Gemert, R, van Someren Gréve, H, Heilmann, I, Holm, M W, Jónasdóttir, S H, Kenitz, K M, Kiørboe, T, Lindegren, M, Mariani, P, Nielsen, L T, Pancic, M, Payne, M, Pécuchet, L, Schnedler-Meyer, N A, Thygesen, U H, Törnroos, A & Andersen, K H 2020, ' Seasonal strategies in the world's oceans ', Progress in Oceanography, vol. 189, 102466 . https://doi.org/10.1016/j.pocean.2020.102466
Throughout much of the world’s oceans, life is organized around seasonal cycles of feast and famine. Here we seek to understand the life-history strategies by which marine organisms contend with seasonal variations through a range of adaptations an
Introduction to: Comparing ocean basin ecosystem structure and functioning across the North Atlantic
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 180:104875
Autor:
Eilif Gaard, Høgni Debes, Erling Kåre Stenevik, Catherine Johnson, Torkel Gissel Nielsen, Pierre Pepin, Guillem Chust, James J. Pierson, Sigrun Jonasdottir, Priscilla Licandro, Barbara Niehoff, Webjørn Melle, Claudia Castellani, Cecilie Broms, Michael R. Heath, Astthor Gislason, Jeffrey A. Runge, Erica J. H. Head, Tone Falkenhaug, Stéphane Plourde
Publikováno v:
Earth System Science Data. 7:223-230
Here we present a new, pan-North-Atlantic compilation of data on key mesozooplankton species, including the most important copepod, Calanus finmarchicus. Distributional data of eight representative zooplankton taxa, from recent (2000–2009) Continuo