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Does Operational Oceanography Address the Needs of Fisheries and Applied Environmental Scientists? ArchiMer
Berx, Barbara; Dickey-collas, Mark; Skogen, Morten D.; De Roeck, Yann-herve; Klein, Holger; Barciela, Rosa; Forster, Rodney M.; Dombrowsky, Eric; Huret, Martin; Payne, Mark; Sagarminaga, Yolanda; Schrum, Corinna.
Although many oceanographic data products are now considered operational, continued dialogue between data producers and their user communities is still needed. The fisheries and environmental science communities have often been criticized for their lack of multidisciplinarity, and it is not clear whether recent developments in operational oceanographic products are addressing these needs. The International Council for the Exploration of the Sea (ICES) Working Group on Operational Oceanographic products for Fisheries and Environment (WGOOFE) identified a potential mismatch between user requirements and the perception of requirements by the providers. Through a questionnaire (98 respondents), WGOOFE identified some of these issues. Although products of...
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Ano: 2011 URL: http://archimer.ifremer.fr/doc/00032/14330/11616.pdf
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Modelling secondary production in the Norwegian Sea with a fully coupled physical/primary production/individual-based Calanus finmarchicus model system ArchiMer
Hjøllo, Solfrid Sætre; Huse, Geir; Skogen, Morten D.; Melle, Webjørn.
The copepod Calanus finmarchicus is the dominant species of the meso-zooplankton in the Norwegian Sea, and constitutes an important link between the phytoplankton and the higher trophic levels in the Norwegian Sea food chain. An individual-based model for C. finmarchicus, based on super-individuals and evolving traits for behaviour, stages, etc., is two-way coupled to the NORWegian ECOlogical Model system (NORWECOM). One year of modelled C. finmarchicus spatial distribution, production and biomass are found to represent observations reasonably well. High C. finmarchicus abundance is found along the Norwegian shelf-break in the early summer, while the overwintering population is found along the slope and in the deeper Norwegian Sea basins. The timing of the...
Tipo: Text Palavras-chave: Calanus finmarchicus; Zooplankton; IBM; NORWECOM; End-to-end modelling; North-East Atlantic.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00076/18690/16242.pdf
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Predicting the consequences of nutrient reduction on the eutrophication status of the North Sea ArchiMer
Lenhart, Hermann-j.; Mills, David K.; Baretta-bekker, Hanneke; Van Leeuwen, Sonja M.; Van Der Molen, Johan; Baretta, Job W.; Blaas, Meinte; Desmit, Xavier; Kuehn, Wilfried; Lacroix, Genevieve; Los, Hans J.; Menesguen, Alain; Neves, Ramiro; Proctor, Roger; Ruardij, Piet; Skogen, Morten D.; Vanhoutte Brunier, Alice; Villars, Monique T.; Wakelin, Sarah L..
In this paper the results from a workshop of the OSPAR Intersessional Correspondence Group on Eutrophication Modelling (ICG-EMO) held in Lowestoft in 2007 are presented. The aim of the workshop was to compare the results of a number of North Sea ecosystem models under different reduction scenarios. In order to achieve comparability of model results the participants were requested to use a minimum spin-up time, common boundary conditions which were derived from a wider-domain model, and a set of common forcing data, with special emphasis on a complete coverage of river nutrient loads. Based on the OSPAR requirements river loads were derived, taking into account the reductions already achieved between 1985 and 2002 for each country. First, for the year 2002,...
Tipo: Text Palavras-chave: Eutrophication; Ecosystem modeling; OSPAR Comprehensive Procedure; Eutrophication assessment; North Sea; River nutrient loads; Reduction scenarios.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00003/11391/8054.pdf
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Responses of summer phytoplankton biomass to changes in top-down forcing: Insights from comparative modelling ArchiMer
Maar, Marie; Butenschon, Momme; Daewel, Ute; Eggert, Anja; Fan, Wei; Hjollo, Solfrid S.; Hufnagl, Marc; Huret, Martin; Ji, Rubao; Lacroix, Genevieve; Peck, Myron A.; Radtke, Hagen; Sailley, Sevrine; Sinerchia, Matteo; Skogen, Morten D.; Travers-trolet, Morgane; Troost, Tineke A.; Van De Wolfshaar, Karen.
The present study describes the responses of summer phytoplankton biomass to changes in top-down forcing (expressed as zooplankton mortality) in three ecosystems (the North Sea, the Baltic Sea and the Nordic Seas) across different 3D ecosystem models. In each of the model set-ups, we applied the same changes in the magnitude of mortality (±20%) of the highest trophic zooplankton level (Z1). Model results showed overall dampened responses of phytoplankton relative to Z1 biomass. Phytoplankton responses varied depending on the food web structure and trophic coupling represented in the models. Hence, a priori model assumptions were found to influence cascades and pathways in model estimates and, thus, become highly relevant when examining ecosystem pressures...
Tipo: Text Palavras-chave: Plankton functional types; Trophic cascades; Zooplankton mortality; Phytoplankton; Ensemble modelling.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00433/54466/56083.pdf
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Variation that can be expected when using particle tracking models in connectivity studies ArchiMer
Hufnagl, Marc; Payne, Mark; Lacroix, Genevieve; Bolle, Loes J.; Daewele, Ute; Dickey-collas, Mark; Gerkema, Theo; Huret, Martin; Janssen, Frank; Kreus, Markus; Paetsch, Johannes; Pohlmann, Thomas; Ruardij, Piet; Schrum, Corinna; Skogen, Morten D.; Tiessen, Meinard C. H.; Petitgas, Pierre; Van Beek, Jan K. L.; Van Der Veer, Henk W.; Callies, Ulrich.
Hydrodynamic Ocean Circulation Models and Lagrangian particle tracking models are valuable tools e.g. in coastal ecology to identify the connectivity between offshore spawning and coastal nursery areas of commercially important fish, for risk assessment and more for defining or evaluating marine protected areas. Most studies are based on only one model and do not provide levels of uncertainty. Here this uncertainty was addressed by applying a suite of 11 North Sea models to test what variability can be expected concerning connectivity. Different notional test cases were calculated related to three important and well-studied North Sea fish species: herring (Clupea harengus), and the flatfishes sole (Solea solea) and plaice (Pleuronectes platessa). For sole...
Tipo: Text Palavras-chave: Ocean circulation; Lagrangian approach; Variability; Marine protected areas; Renewable energy; Wind park; Model intercomparison; Ensemble.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00385/49660/50198.pdf
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