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	Provedor de dados ArchiMer (2) Autor Caumette, P (1) De Wit, R (1) Guillou, Jean-louis (1) Guyoneaud, R (1) Juge, Claude (1) Matheron, R (1) Pichot, Paul (1) Mais... Palavra-chave Dystrophic crisis (2) Bactéries phototrophes (1) Crise dystophique (1) Crise dystrophique (1) Eaux rouges (1) Lagoons (1) Macroalgae (1) Macroalgues (1) Matière organique (1) Mediterranean lagoori (1) Milieu lagunaire (1) Méditerranée (1) Organic matter (1) Oxygen (1) Oxygène (1) Phototrophic bacteria (1) Red waters (1) THAU (1) Mais... Tipo do documento Text (2) Ano 1998 (1) 1991 (1) País France (2) Idioma Francês (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Impact of macroalgal dredging on dystrophic crises and phototrophic bacterial blooms (red waters) in a brackish coastal lagoon ArchiMer Guyoneaud, R; De Wit, R; Matheron, R; Caumette, P. The Prevost lagoon (Mediterranean coast, France), was subject to annual dystrophic crises caused by the biodegradation of opportunistic macroalgae (Ulva lactuca) in the past. These crises result in anoxic waters with subsequent blooms of Purple Sulphur Bacteria (red waters) which, by oxidizing sulphide, contribute to the reestablishment of oxic conditions in the water column. Mechanical dredging of the macroalgal biomass has been carried out in the lagoon since 1991 with the aim of preventing the ecological and economic disturbances caused by such crises. Dredging began just before the phototrophic bloom when the water was already hypoxic (O-2 = 0.7 mg . L-1) and contained sulphilde (H2S = 7.3 mg . L-1) and purple patches of phototrophic bacteria... Tipo: Text Palavras-chave: Milieu lagunaire; Macroalgues; Crise dystophique; Eaux rouges; Bactéries phototrophes; Lagoons; Macroalgae; Dystrophic crisis; Red waters; Phototrophic bacteria. Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43658/43216.pdf La "malaïgue" de l'été 1990 dans l’étang de Thau ArchiMer Pichot, Paul; Juge, Claude; Guillou, Jean-louis. In summer 1990, Thau, a Mediterranean lagoon was affected by a dystrophic crisis. An aerial survey was performed to observe polluted areas. The analysis of the main environmental water conditions have shown that suspended organic matter plays an important part in the development of this dystrophic crisis. Tipo: Text Palavras-chave: Crise dystrophique; Oxygène; Matière organique; THAU; Méditerranée; Dystrophic crisis; Oxygen; Organic matter; Mediterranean lagoori. Ano: 1991 URL: http://archimer.ifremer.fr/doc/00432/54333/58906.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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