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Qualité des milieux naturels ArchiMer
Legube, Bernard; Montigny, Frédéric; Bustamante, Paco; Bareille, Gilles; Baudrimont, Magalie; Cachot, Jerome; Guibaud, Gilles; Hechard, Yann; Labanowski, Jérôme; Lacoue-labarthe, Thomas; Mondamert, Leslie; Budzinski, Hélène; Prou, Jean; Gazeau, Alain; Hulin, Agnès; Bunales, Rafaël; Villenave, Eric; Chabbi, Abad; Atteia, Olivier; Bouchon, Didier; Denaix, Agnès; Chery, Philippe; Pellerin, Sylvain; Rumpel, Cornelia.
L’impact du changement climatique sur la qualité et la pollution des milieux est souvent négligé par rapport à d’autres impacts plus médiatisés (e.g. événements climatiques et hydrologiques extrêmes, santé, trait de côtes, disponibilité des ressources en eau…). Les eaux et l’air de Nouvelle-Aquitaine, et à moindre mesure les sols, déjà significativement pollués, subiront pourtant plusieurs détériorations significatives, qui sont présentées et discutées dans ce chapitre. Certains de ces effets sont déjà visibles et vont s’aggraver dans le contexte climatique prévu. Il s’agit principalement, pour l’eau douce superficielle, de l’augmentation de la température, de la diminution des débits des cours d’eau, de l’évolution des espèces aquatiques et du...
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Ano: 2018 URL: http://archimer.ifremer.fr/doc/00444/55578/57190.pdf
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To what extent does organic farming rely on nutrient inflows from conventional farming? Organic Eprints
Nowak, Benjamin; Nesme, Thomas; David, Christophe; Pellerin, Sylvain.
Organic farming is increasingly recognized as a prototype for sustainable agriculture. Its guidelines ban the use of artificial fertilizers. However, organic farms may import nutrients from conventional farming through material exchanges. In this study, we aimed at estimating the magnitude of these flows through the quantification of nitrogen, phosphorus and potassium inflows from conventional farming to organic farming. Material inflows and outflows were collected for two cropping years on 63 farms. The farms were located in three French agricultural districts distributed over a gradient of farming activity defined by both the stocking rate and the ratio of the farm area under arable crops. Our results showed that on average, inflows from conventional...
Tipo: Journal paper Palavras-chave: Production systems Cereals; Pulses and oilseeds Composting and manuring Nutrient turnover Farm nutrient management.
Ano: 2013 URL: http://orgprints.org/25455/3/Nowak_Nesme_2013_EnvironResLett_8.pdf
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