Blar i forfatter "Wassmann, Paul"

Viser treff 21-27 av 27

    • Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago 

      Sanz-Martín, Marina; Vernet, Maria; Cape, Mattias R.; Cano, Elena M; Delgado-Huertas, Antonio; Reigstad, Marit; Wassmann, Paul; Duarte, Carlos M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-02)
      Phytoplankton contribute half of the primary production (PP) in the biosphere and are the major source of energy for the Arctic Ocean ecosystem. While PP measurements are therefore fundamental to our understanding of marine biogeochemical cycling, the extent to which current methods provide a definitive estimate of this process remains uncertain given differences in their underlying approaches, and ...

    • Revisiting the footprints of climate change in Arctic marine food webs: An assessment of knowledge gained since 2010 

      Brandt, Sören; Wassmann, Paul; Piepenburg, Dieter (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-30)
      In 2011, a first comprehensive assessment of the footprints of climate change on Arctic marine ecosystems (such as altered distribution ranges, abundances, growth and body conditions, behaviours and phenologies, as well as community and regime shifts) was published. Here, we re-assess the climate-driven impacts reported since then, to elucidate to which extent and how observed ecological footprints ...

    • Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea 

      Oziel, L; Neukermans, G; Ardyna, M; Lancelot, C; Tison, J-L; Wassmann, Paul; Sirven, J; Ruiz-Pino, D; Gascard, J-C (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-16)
      Phytoplankton blooms in the Barents Sea are highly sensitive to seasonal and interannual changes in sea ice extent, water mass distribution, and oceanic fronts. With the ongoing increase of Atlantic Water inflows, we expect an impact on these blooms. Here, we use a state‐of‐the‐art collection of in situ hydrogeochemical data for the period 1998–2014, which includes ocean color satellite‐derived ...

    • Seasonal patterns in Arctic planktonic metabolism (Fram Strait - Svalbard region) 

      Vaquer-Sunyer, Raquel; Duarte, Carlos M.; Regaudie-de-Gioux, A; Holding, Johnna; García-Corral, LS; Reigstad, Marit; Wassmann, Paul (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      The metabolism of the Arctic Ocean is marked by extremely pronounced seasonality and spatial heterogeneity associated with light conditions, ice cover, water masses and nutrient availability. Here we report the marine planktonic metabolic rates (net community production, gross primary production and community respiration) along three different seasons of the year, for a total of eight cruises ...

    • Still Arctic? — The changing Barents Sea 

      Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Reigstad, Marit; Sundfjord, Arild; Bogstad, Bjarte; Chierici, Melissa; Hop, Haakon; Renaud, Paul Eric; Smedsrud, Lars Henrik; Stige, Leif Christian; Årthun, Marius; Berge, Jørgen; Bluhm, Bodil Annikki Ulla Barbro; Borgå, Katrine; Bratbak, Gunnar; Divine, Dmitry V; Eldevik, Tor; Eriksen, Elena; Fer, Ilker; Fransson, Agneta; Gradinger, Rolf Rudolf; Granskog, Mats A.; Haug, Tore; Husum, Katrine; Johnsen, Geir; Jonassen, Marius Opsanger; Jørgensen, Lis Lindal; Kristiansen, Svein; Larsen, Aud; Lien, Vidar Surén; Lind, Sigrid; Lindstrøm, Ulf Ove; Mauritzen, Cecilie; Melsom, Arne; Mernild, Sebastian H.; Müller, Malte; Nilsen, Frank; Primicerio, Raul; Søreide, Janne; van der Meeren, Gro Ingleid; Wassmann, Paul (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-13)
      The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. Physical conditions in this area are characterized by large seasonal contrasts between partial sea-ice cover in winter and spring versus predominantly open water in summer and ...

    • Towards a unifying pan-arctic perspective: A conceptual modelling toolkit 

      Wassmann, Paul; Carmack, E.; Bluhm, Bodil; Duarte, Carlos M.; Berge, Jørgen; Brown, K.; Grebmeier, Jacqueline M.; Holding, Johnna; Kosobokova, Ksenia; Kwok, R.; Matrai, Patricia A.; Agusti, S.; Babin, Marcel; Bhatt, Uma S.; Eicken, Hajo; Polyakov, Igor V.; Rysgaard, Søren; Huntington, Henry P. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-17)
      The Arctic Ocean is overwhelmingly forced by its lateral boundaries, and interacts with, the global system. For the development of nested conceptual models of the Arctic Ocean ecosystem we here choose the full pan-Arctic as our focal scale. Understanding the pan-Arctic scale, however, requires that we look at the underlying scales of its major components, by considering regionality, connectivity and ...

    • Warming and CO2 enhance arctic heterotrophic microbial activity 

      Vaqué, Dolors; Lara, Elena; Arrieta, Jesús M.; Holding, Johnna; Sa, Elisabet L; Hendriks, Iris E.; Coello-Camba, Alexandra; Alvarez, Marta; Agusti, Susana; Wassmann, Paul; Duarte, Carlos M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-20)
      Ocean acidification and warming are two main consequences of climate change that can directly affect biological and ecosystem processes in marine habitats. The Arctic Ocean is the region of the world experiencing climate change at the steepest rate compared with other latitudes. Since marine planktonic microorganisms play a key role in the biogeochemical cycles in the ocean it is crucial to ...