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Lassus, Patrick / Maggi, Pierre / Le Baut, Claire / Bardouil, Michèle / Bocquene, Gilles / Le Dean, Loïc / Truquet, Philippe - 1981In order to estimate the effects of chlorine used in cooling systems of electric power plants on zooplankton, some experiments have been realized with the four first larval stages of the prawn (P. serratus Pennant). Chlorine injection was performed by constant adding at 16 and 20 degree C with...Contributeur (s):
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Lassus, Patrick / Martin, A / Maggi, Pierre / Berthome, Jean-paul / Langlade, Aime / Bachere, Evelyne - 1983Discolored waters and human diseases by shellfishes were dominant features of summer 1983 in south coast of Brittany. Vilaine Bay, the most damaged area, was successively affected by brown waters in early June, and diarrhetic intoxications by harvested mussels (July and August), just as DPS...Contributeur (s):
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Andresen Leitao, Maria Da Paz / Lassus, Patrick / Maggi, Pierre / Le Baut, Claire / Chauvin, Jacky / Truouet, Philippe - 1982Following 1978 and 1981 human poisoning by mussels in Vilaine Bay (France) a survey of potentially toxic dinoflagellates was conducted in that area in 1982. At the same time paralytic shellfish poison (PSP) analyses were made, the authors studied the dinoflagellates encountered in the intestinal...Contributeur (s):
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Lassus, Patrick / Maggi, Pierre - 1977The effluents are characterized by acidity produced by the presence of sulfuric acid, and a slight quantity of several metallic salts. Effects on the larval development of P. serratus are discussed.Contributeur (s):
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Maggi, Pierre - 1972Toxicity of seven emulsifying agents for treating oil spills (ISTPM designation E sub(22), E sub(30), E sub(41), E sub(46), E sub(47), E sub(52) and E sub(53)) was determined using eight marine species (three gastropods, one bivalve, two crustacean and one fish). Results are tabulated as LD sub(50...Contributeur (s):
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Cossa, Daniel / Maggi, Pierre - 1973In this research, biodegradation associated with evaluation of the variations of acute toxicity of 5 anionic detergents towards Anguilla anguilla is described. It appears that the process of anionic detergent biodegradation in sea water is similar to the results obtained by many authors working on...Contributeur (s):
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Maggi, Pierre / Cossa, Daniel - 1973The acute toxicity of 5 anionic detergents towards 15 marine organisms is related in this study which indicates that fish are very susceptible while Crustacea are the most resistant animals. Phytoplankton and molluscs appear to have intermediate sensibility tothose syndets. The lethal concs of the...Contributeur (s):
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Maggi, Pierre - 1973The effect of the 2 pesticides most frequently used against mosquitoes was tested on a number of marine organisms. Growth inhibition was tested using Phaeodactylum tricornutum and Gyrosigma spencer (algae). To 0.5 ml of culture inoculum containing similar to 100000 cells in exponential growth phase...Contributeur (s):
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Alzieu, Claude / Lassus, Patrick / Maggi, Pierre / Poggi, Robert / Ravoux, Georges - 1983On the 21st of June 1983, the I.S.T.P.M. notified the Head of the French Marine Affairs for the Bretagne-Vendée area about the presence of a toxic phytoplanktonic organism in the waters of the Bay of the Vilaine which could cause gastrointestinal intoxications to shellfish eaters. Simultaneously,...Contributeur (s):
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Maggi, Pierre / Soulard, Louis / Truquet, Isabelle / Chauvin, Jacky - 1984Analysis of local hydrological and climatic factors help to determine basic conditions for blooms and red tides in Vilaine Bay during summer 1983. Spring or late summer heavy rainfalls produce nutrients increase and low salinities in coastal surface waters. It causes sharp saline stratification,...Contributeur (s):
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Maggi, Pierre - 1973The issue of seabed destruction in the Gulf of Giens, is certainly linked to a regression of Posidonia oceanica which does not carry out its protecting role towards loose substrates. These destructions lead, through the creation of a new balance profile, to irreversible beach deterioration...Contributeur (s):
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Lassus, Patrick / Maggi, Pierre - 1980Dunaliella tertiolecta cultures, at the beginning of their exponential multiplication stage and acclimatized at 12, 16, 20 and 24°C, undergo sudden thermic rises, or a chloration of 0.5 mg/l or a combination of both treatments. As a result, the development of this flagellate is hardly affected by...Contributeur (s):
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Alzieu, Claude / De Barjac, Huguette / Maggi, Pierre - 1975Le patrimoine forestier est régulièrement menacé par la prolifération de prédateurs qui, par leur voracité, peuvent dévaster de très importantes surfaces boisées. Parmi ces ravageurs, la chenille processionnaire du pin (Thaumetopoea pityocampa SCHIFF) fait l'objet d'une surveillance...Contributeur (s):
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Maggi, Pierre / Alzieu, Claude - 1977La majorité des pays riverains de la mer du Nord, de l'Atlantique et de la Méditerranée se sont engagés, par différents accords internationaux, à interdire les déversements et rejets en mer de substances nocives. C'est ainsi que parallèlement à certains métaux lourds et produits...Contributeur (s):
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Maggi, Pierre / Gruet, Yves / Lassus, Patrick / Kalifa, Francis - 1977Les posidonies sont des phanérogames marines qui existent actuellement en deux endroits du globe : en Méditerranée (Posidonia oceanica DELILE) et sur les côtes sud de l'Australie (P. australis J.D. HOOKER). En Méditerranée, l'herbier de posidonies occupe une grande partie des fonds...Contributeur (s):