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18 July 2018

L’eutrophisation

Manifestations, causes, conséquences et prédictibilité

L’eutrophisation touche de nombreux lacs, réservoirs, rivières et zones côtières, en France et dans le monde. Elle génère des perturbations majeures pour les écosystèmes aquatiques et a des impacts sur les biens et les services associés, sur la santé humaine et sur les activités économiques. Dans certains espaces, elle est devenue une question socialement vive. Les débats sur l’identification des facteurs et des niveaux de risque d’eutrophisation ont conduit les ministères en charge de l’environnement et de l’agriculture à confier au CNRS, à l’Ifremer, à l’Inra et à Irstea, la réalisation d’une expertise scientifique collective permettant d’orienter les politiques publiques.
Cette expertise établit un état des lieux critique sur les connaissances scientifiques disponibles au niveau international sur les causes, les mécanismes, les conséquences et la prédictibilité des phénomènes d’eutrophisation. Elle identifie les notions considérées comme certaines et celles encore entachées d’incertitudes, les lacunes, les questions faisant l’objet de controverses scientifiques, ainsi que les leviers d’action existants et les dispositifs mis en place pour surveiller et lutter contre l’eutrophisation.(...)

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18 July 2018

[Download] Assessment Report on Biodiversity and Ecosystem Services for Europe and Central Asia

The objective of IPBES, the Intergovernmental Science Policy Platform on Biodiversity and Ecosystem Services, is to provide Governments, the private sector, and civil society with scientifically credible and independent up-to-date assessments of available knowledge to make informed decisions at the local, regional and international levels.
This regional and subregional assessment of biodiversity and ecosystem services for Europe and Central Asia has been carried out by 111 selected authors and 6 early career fellows, assisted by 149 contributing authors, primarily from this region, who have analyzed a large body of knowledge, including about 4750 scientific publications and other knowledge sources. It represents the state of knowledge about the Europe and Central Asia region and subregions.
The chapters and their executive summaries were accepted, and the summary for policymakers was approved, by the 129 Member States of IPBES at the sixth session of the IPBES Plenary (18 to 24 March, 2018, Medellín, Colombia).(...)

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18 July 2018

[Download] Assessment Report on Biodiversity and Ecosystem Services for Africa

The objective of the Intergovernmental Science Policy Platform on Biodiversity and Ecosystem Services is to provide Governments, the private sector, and civil society with scientifically credible and independent up-to-date assessments of available knowledge to make informed decisions at the local, regional and international levels.
This regional and subregional assessment of biodiversity and ecosystem services for Africa has been carried out by 127 selected experts, including 7 early career fellows,
assisted by 23 contributing authors, primarily from Africa, who have analyzed a large body of knowledge, including about 2,400 scientific publications. The Report represents
the state of knowledge on the Africa region and subregions.
Its chapters and their executive summaries were accepted, and its summary for policymakers was approved, by the Member States of IPBES at the sixth session of the IPBES Plenary (18 to 24 March 2018, Medellín, Colombia).(...)

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18 July 2018

[Download] Assessment Report on Biodiversity and Ecosystem Services for the Americas

The objective of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services is to provide Governments, the private sector, and civil society with scientifically credible and independent up-to-date assessments of available knowledge to make informed decisions at the local, regional and international levels.
This regional and subregional assessment of biodiversity and ecosystem services for the Americas has been carried out by 104 selected experts including 6 early career fellows, assisted by 76 contributing authors, primarily from the Americas, who have analyzed a large body of knowledge, including about 4,100 scientific publications.
The Report represents the state of knowledge on the Americas region and subregions. Its chapters and their executive summaries were accepted, and its summary for policymakers was approved, by the Member States of IPBES at the sixth session of the IPBES Plenary (18 to 24 March 2018, Medellín, Colombia).(...)

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18 July 2018

[Download] Assessment Report on Biodiversity and Ecosystem Services for Asia and the Pacific

The objective of the Intergovernmental Science Policy Platform on Biodiversity and Ecosystem Services is to provide Governments, the private sector, and civil society with scientifically credible and independent up-to-date assessments of available knowledge to make informed decisions at the local, regional and international levels.
This regional and subregional Assessment of biodiversity and ecosystem services for Asia and the Pacific has been carried out by 120 experts, including 7 early career fellows, assisted by 54 contributing authors, primarily from this region, who have analyzed a large body of knowledge, including about 3,200 scientific publications.
The Report represents the state of knowledge on the Asia and Pacific region and subregions. Its chapters and their executive summaries were accepted, and its summary for policymakers was approved, by the Member States of IPBES at the sixth session of the IPBES Plenary (18 to 24 March 2018, Medellín, Colombia).(...)

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