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| Druon, Jean-noel; Helaouet, Pierre; Beaugrand, Grégory; Fromentin, Jean-marc; Palialekis, Andreas; Hoepffner, Nicolas. |
| This study investigates the association between an index of mesozooplankton biomass, derived from the Continuous Plankton Recorder survey and satellite-derived productivity fronts in the North Atlantic. While chlorophyll-a content (CHL) is commonly described as a proxy for phytoplankton biomass, the size of productivity fronts estimated from the horizontal gradient of CHL appears to be directly linked to mesozooplankton biomass. Our results suggest that the lifespan of productivity fronts, which ranges from weeks to months, meets the time requirement of mesozooplankton to develop. The proposed indicator describes the daily distribution of mesozooplankton’s suitable feeding habitat. It also provides a coherent interpretation of the productivity front... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00486/59744/62843.pdf |
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| Ferreira, Joao G.; Andersen, Jesper H.; Borja, Angel; Bricker, Suzanne B.; Camp, Jordi; Da Silva, Margarida Cardoso; Garces, Esther; Heiskanen, Anna-stiina; Humborg, Christoph; Ignatiades, Lydia; Lancelot, Christiane; Menesguen, Alain; Tett, Paul; Hoepffner, Nicolas; Claussen, Ulrich. |
| In 2009, following approval of the European Marine Strategy Framework Directive (MSFD, 2008/56/EC), the European Commission (EC) created task groups to develop guidance for eleven quality descriptors that form the basis for evaluating ecosystem function. The objective was to provide European countries with practical guidelines for implementing the MSFD, and to produce a Commission Decision that encapsulated key points of the work in a legal framework. This paper presents a review of work carried out by the eutrophication task group, and reports our main findings to the scientific community. On the basis of an operational, management-oriented definition, we discuss the main methodologies that could be used for coastal and marine eutrophication assessment.... |
| Tipo: Text |
Palavras-chave: Eutrophication; Chlorophyll; Dissolved oxygen; Harmful algae; Marine; Coastal; Assessment methods; Europe; Marine Strategy Framework Directive; Water Framework Directive. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00039/15055/12609.pdf |
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| Le Traon, Pierre-yves; Larnicol, Gilles; Guinehut, Stephanie; Pouliquen, Sylvie; Bentamy, Abderrahim; Roemmich, Dean; Donlon, Craig; Roquet, Herve; Jacobs, Gregg; Griffin, David; Bonjean, Fabrice; Hoepffner, Nicolas; Breivik, Lars-anders. |
| Data assembly and processing centers are essential elements of the operational oceanography infrastructure. They provide data and products needed by modeling and data assimilation systems; they also provide products directly usable for applications. This paper discusses the role and functions of the data centers for operational oceanography. It describes some of the main data assembly centers (Argo and in situ data, altimetry, sea surface temperature) developed during the Global Ocean Data Assimilation Experiment. An overview of other data centers (wind and fluxes, ocean color, sea ice) is also given. Much progress has been achieved over the past 10 years to validate, intercalibrate, and merge altimeter data from multiple satellites. Accuracy and... |
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| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/2009/publication-6879.pdf |
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| Larkin, Kate; Wouters, Noémie; Mc Donough, Niall; Fernandez, Marisa; Diez, Raquel; Carvalho, Telmo; Garriga, Maica; Costa, Cristina; Hoepffner, Nicolas; Le Moigne, Morgan; Lecomte, Jean-paul; Wawrzynski, Wojcieh; Kellerman, Adi; Murphy, David; Ni Cheallachain, Cliona; Bergh, Oivind; Nedreaas, Kjell. |
| The year 2014 marks the mid-point between the launch of the Marine Strategy Framework Directive (MSFD) and the goal of Good Environmental Status (GES) in 2020. Although a lot of progress has been made, the current use of Europe’s seas is not sustainable. In its recent publication called ‘Marine Messages’ (EEA, 2014), the European Environment Agency recommended that “urgent action and protection of the seas and ocean should be top of the EU agenda”. In addition, the European Commission Healthy Oceans – Productive Ecosystems (HOPE) conference declaration1 urged political leaders “…to turn words into action and encourage all stakeholders, including the private sector, to take the measures necessary to deliver “Good Environmental Status” for Europe’s seas and... |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00259/36996/35487.pdf |
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