Advanced search in Research products
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
The following results are related to European Marine Science. Are you interested to view more results? Visit OpenAIRE - Explore.
2,967 Research products, page 1 of 297

  • European Marine Science
  • Other research products
  • 2013-2022
  • DE
  • FR
  • European Marine Science

10
arrow_drop_down
Date (most recent)
arrow_drop_down
  • Open Access
    Authors: 
    Gazert, Volker; Luedecke, Cornelia;
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
  • Open Access
    Authors: 
    Wesche, Christine; Regnery, Julia;
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
  • Open Access English
    Authors: 
    Waelbroeck, Claire; Tjiputra, Jerry; Guo, Chuncheng; Nisancioglu, Kerim H.; Jansen, Eystein; Vazquez Riveiros, Natalia; Toucanne, Samuel; Eynaud, Frédérique; Rossignol, Linda; Dewilde, Fabien; +3 more
    Project: EC | ACCLIMATE (339108), EC | ICE2ICE (610055)

    We combine consistently dated benthic carbon isotopic records distributed over the entire Atlantic Ocean with numerical simulations performed by a glacial configuration of the Norwegian Earth System Model with active ocean biogeochemistry, in order to interpret the observed Cibicides δ13C changes at the stadial-interstadial transition corresponding to the end of Heinrich Stadial 4 (HS4) in terms of ocean circulation and remineralization changes. We show that the marked increase in Cibicides δ13C observed at the end of HS4 between ~2000 and 4200 m in the Atlantic can be explained by changes in nutrient concentrations as simulated by the model in response to the halting of freshwater input in the high latitude glacial North Atlantic. Our model results show that this Cibicides δ13C signal is associated with changes in the ratio of southern-sourced (SSW) versus northern-sourced (NSW) water masses at the core sites, whereby SSW is replaced by NSW as a consequence of the resumption of deep water formation in the northern North Atlantic and Nordic Seas after the freshwater input is halted. Our results further suggest that the contribution of ocean circulation changes to this signal increases from ~40 % at 2000 m to ~80 % at 4000 m. Below ~4200 m, the model shows little ocean circulation change but an increase in remineralization across the transition marking the end of HS4. The simulated lower remineralization during stadials than interstadials is particularly pronounced in deep subantarctic sites, in agreement with the decrease in the export production of carbon to the deep Southern Ocean during stadials found in previous studies.

  • Open Access
    Authors: 
    Lenz, Josefine; Fuchs, Matthias; Nitze, Ingmar; Strauß, Jens; Grosse, Guido;
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
  • Other research product . Other ORP type . 2022
    Open Access
    Authors: 
    Mark, Felix; Cremer, Charlotte; Havermans, Charlotte; Murray, Ayla Rosina Cherrington; Verhaegen, Gerlien; Wollenburg, Jutta; Wukovits, Julia;
    Country: Germany

    The primary aim of this expedition was to investigate the spatial and temporal distribution, the ecology and physiology, as well as competition of co-occurring gadoid species (Atlantic cod, Polar cod, haddock) in the communities of Arctic and Atlantic influence around Svalbard. We sampled the benthic and pelagic communities (including plankton) on the shallow shelf regions of Svalbard to estimate the effects of climate change on Arctic ecosystems to obtain a picture of the entire system structure and function for a long-term monitoring program of the ‘Atlantification’ of the Svalbard region. We assessed the potential impact of changes in trophic interaction (predator-prey relations) of Atlantic cod (Gadus morhua), Polar cod (Boreogadus saida), haddock (Melanogrammus aeglefinus) and decapod crabs on the productivity and stability of benthic and pelagic communities in Arctic ecosystems, into which their distribution ranges now extend due to ocean warming. In addition to a stock assessment and distribution analysis of gadoid fish and decapod crabs, we aimed to obtain specimens of these species in the Atlantic and polar waters around Svalbard, which were transported alive back to Germany. Laboratory experiments under scenarios of climate change at the Alfred Wegener Institute then provided (and still provide) further insight into capacities for adaptation, performance and interaction of selected species of the Arctic ecosystem around Svalbard. The results will on the one hand be used in an international Norwegian-German project and the pan-Arctic data management system (Piepenburg et al. 2011), on the other hand they will flow into fisheries modelling at the University of Hamburg, the Thuenen Institute and socio-economic modelling approaches that build on the German ocean acidification project BIOACID (www.bioacid.de).

  • Other research product . 2022
    Open Access
    Authors: 
    Kasten, Sabine;
    Publisher: Alfred Wegener Institute for Polar and Marine Research
    Country: Germany
  • Open Access
    Authors: 
    Stoll, Nicolas; Wietz, Matthias; Juricke, Stephan; Pausch, Franziska; Peter, Corina; Massing, Jana C.; Seifert, Miriam; Zeising, Moritz; Käß, Melissa; McPherson, Rebecca; +1 more
    Country: Germany

    Science communication is becoming increasingly important to connect academia and society, and to counteract fake news among climate change deniers. Online video platforms, such as YouTube, offer great potential for low-threshold communication of scientific knowledge to the general public. In April 2020 a diverse group of researchers from the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research launched the YouTube channel "Wissenschaft fürs Wohnzimmer" (translated to "Sitting Room Science") to stream scientific talks about climate change and biodiversity every Thursday evening. Here we report on the numbers and diversity of content, viewers, and presenters from 2 years and 100 episodes of weekly livestreams. Presented topics encompass all areas of polar research, social issues related to climate change, and new technologies to deal with the changing world and climate ahead. We show that constant engagement by a group of co-hosts, and presenters from all topics, career stages, and genders enable a continuous growth of views and subscriptions, i.e. impact. After 783 days the channel gained 30,251 views and 828 subscribers and hosted well-known scientists while enabling especially early career researchers to improve their outreach and media skills. We show that interactive and science-related videos, both live and on-demand, within a pleasant atmosphere, can be produced voluntarily while maintaining high quality. We further discuss challenges and possible improvements for the future. Our experiences may help other researchers to conduct meaningful scientific outreach and to push borders of existing formats with the overall aim of developing a better understanding of climate change and our planet.

  • Other research product . 2022
    Open Access
    Authors: 
    Gohl, Karsten;
    Publisher: Alfred Wegener Institute for Polar and Marine Research
    Country: Germany
  • Other research product . 2022
    Open Access
    Authors: 
    Klaas, Christine;
    Publisher: Alfred Wegener Institute for Polar and Marine Research
    Country: Germany
  • Open Access
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
Advanced search in Research products
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
The following results are related to European Marine Science. Are you interested to view more results? Visit OpenAIRE - Explore.
2,967 Research products, page 1 of 297
  • Open Access
    Authors: 
    Gazert, Volker; Luedecke, Cornelia;
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
  • Open Access
    Authors: 
    Wesche, Christine; Regnery, Julia;
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
  • Open Access English
    Authors: 
    Waelbroeck, Claire; Tjiputra, Jerry; Guo, Chuncheng; Nisancioglu, Kerim H.; Jansen, Eystein; Vazquez Riveiros, Natalia; Toucanne, Samuel; Eynaud, Frédérique; Rossignol, Linda; Dewilde, Fabien; +3 more
    Project: EC | ACCLIMATE (339108), EC | ICE2ICE (610055)

    We combine consistently dated benthic carbon isotopic records distributed over the entire Atlantic Ocean with numerical simulations performed by a glacial configuration of the Norwegian Earth System Model with active ocean biogeochemistry, in order to interpret the observed Cibicides δ13C changes at the stadial-interstadial transition corresponding to the end of Heinrich Stadial 4 (HS4) in terms of ocean circulation and remineralization changes. We show that the marked increase in Cibicides δ13C observed at the end of HS4 between ~2000 and 4200 m in the Atlantic can be explained by changes in nutrient concentrations as simulated by the model in response to the halting of freshwater input in the high latitude glacial North Atlantic. Our model results show that this Cibicides δ13C signal is associated with changes in the ratio of southern-sourced (SSW) versus northern-sourced (NSW) water masses at the core sites, whereby SSW is replaced by NSW as a consequence of the resumption of deep water formation in the northern North Atlantic and Nordic Seas after the freshwater input is halted. Our results further suggest that the contribution of ocean circulation changes to this signal increases from ~40 % at 2000 m to ~80 % at 4000 m. Below ~4200 m, the model shows little ocean circulation change but an increase in remineralization across the transition marking the end of HS4. The simulated lower remineralization during stadials than interstadials is particularly pronounced in deep subantarctic sites, in agreement with the decrease in the export production of carbon to the deep Southern Ocean during stadials found in previous studies.

  • Open Access
    Authors: 
    Lenz, Josefine; Fuchs, Matthias; Nitze, Ingmar; Strauß, Jens; Grosse, Guido;
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany
  • Other research product . Other ORP type . 2022
    Open Access
    Authors: 
    Mark, Felix; Cremer, Charlotte; Havermans, Charlotte; Murray, Ayla Rosina Cherrington; Verhaegen, Gerlien; Wollenburg, Jutta; Wukovits, Julia;
    Country: Germany

    The primary aim of this expedition was to investigate the spatial and temporal distribution, the ecology and physiology, as well as competition of co-occurring gadoid species (Atlantic cod, Polar cod, haddock) in the communities of Arctic and Atlantic influence around Svalbard. We sampled the benthic and pelagic communities (including plankton) on the shallow shelf regions of Svalbard to estimate the effects of climate change on Arctic ecosystems to obtain a picture of the entire system structure and function for a long-term monitoring program of the ‘Atlantification’ of the Svalbard region. We assessed the potential impact of changes in trophic interaction (predator-prey relations) of Atlantic cod (Gadus morhua), Polar cod (Boreogadus saida), haddock (Melanogrammus aeglefinus) and decapod crabs on the productivity and stability of benthic and pelagic communities in Arctic ecosystems, into which their distribution ranges now extend due to ocean warming. In addition to a stock assessment and distribution analysis of gadoid fish and decapod crabs, we aimed to obtain specimens of these species in the Atlantic and polar waters around Svalbard, which were transported alive back to Germany. Laboratory experiments under scenarios of climate change at the Alfred Wegener Institute then provided (and still provide) further insight into capacities for adaptation, performance and interaction of selected species of the Arctic ecosystem around Svalbard. The results will on the one hand be used in an international Norwegian-German project and the pan-Arctic data management system (Piepenburg et al. 2011), on the other hand they will flow into fisheries modelling at the University of Hamburg, the Thuenen Institute and socio-economic modelling approaches that build on the German ocean acidification project BIOACID (www.bioacid.de).

  • Other research product . 2022
    Open Access
    Authors: 
    Kasten, Sabine;
    Publisher: Alfred Wegener Institute for Polar and Marine Research
    Country: Germany
  • Open Access
    Authors: 
    Stoll, Nicolas; Wietz, Matthias; Juricke, Stephan; Pausch, Franziska; Peter, Corina; Massing, Jana C.; Seifert, Miriam; Zeising, Moritz; Käß, Melissa; McPherson, Rebecca; +1 more
    Country: Germany

    Science communication is becoming increasingly important to connect academia and society, and to counteract fake news among climate change deniers. Online video platforms, such as YouTube, offer great potential for low-threshold communication of scientific knowledge to the general public. In April 2020 a diverse group of researchers from the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research launched the YouTube channel "Wissenschaft fürs Wohnzimmer" (translated to "Sitting Room Science") to stream scientific talks about climate change and biodiversity every Thursday evening. Here we report on the numbers and diversity of content, viewers, and presenters from 2 years and 100 episodes of weekly livestreams. Presented topics encompass all areas of polar research, social issues related to climate change, and new technologies to deal with the changing world and climate ahead. We show that constant engagement by a group of co-hosts, and presenters from all topics, career stages, and genders enable a continuous growth of views and subscriptions, i.e. impact. After 783 days the channel gained 30,251 views and 828 subscribers and hosted well-known scientists while enabling especially early career researchers to improve their outreach and media skills. We show that interactive and science-related videos, both live and on-demand, within a pleasant atmosphere, can be produced voluntarily while maintaining high quality. We further discuss challenges and possible improvements for the future. Our experiences may help other researchers to conduct meaningful scientific outreach and to push borders of existing formats with the overall aim of developing a better understanding of climate change and our planet.

  • Other research product . 2022
    Open Access
    Authors: 
    Gohl, Karsten;
    Publisher: Alfred Wegener Institute for Polar and Marine Research
    Country: Germany
  • Other research product . 2022
    Open Access
    Authors: 
    Klaas, Christine;
    Publisher: Alfred Wegener Institute for Polar and Marine Research
    Country: Germany
  • Open Access
    Publisher: Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    Country: Germany