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Registros recuperados: 167 | |
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Flassch, Jean-pierre; Leborgne, Yves. |
The Pacific Mani la clam (Tapes philippinamm) was introduccd in France be tween 1972 and 1975 by the SATMAR Corporation , and in England through the Conwy Laboratory in 1980. Initially. spat were introduced and later adults, both from the west coast of North America (Puget Sound area). Aquaculture production in France started from adults. Until 1975, experiments with the spat were conducted at half-industrial scale and research activities and plans to transfer the knowledge were set up. The breeding began at first on the French Atlantic coast in intertidal areas and at the same time in oyster ponds. Characteristics of the new cu lture are presented in th is paper. The diseases met wilh in larval production and growout are also discussed . Nalural... |
Tipo: Text |
Palavras-chave: Clam culture; Environmental impact; Introduced species; Tapes philippinarum. |
Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00037/14871/12197.pdf |
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Kempf, Marc; Cadour, Gwenael; Jeanneret, Hélène; Mear, Yan; Miramand, Pierre; Merceron, Michel. |
This document is a result of an environmental impact study carried out between 1993 and 1995 on the site of a marine trout culture located in the Harbour of Cherbourg, France. It deals with the solid waste of the farm and concems deposition rate, sediment analysis and chemistry (fine fraction < 63 ~m, organic matter, carbon, nitrogen, copper and zinc), bottom living organisms and underwater video monitoring. The impact observed is very moderate and localised. This is mainly due to the strong d)'TIamics and flushing rate of the site. A seperate volume of the same study deals with dissolved waste and concems the water mass (volume 1 : water and pelagos). (Not controlled OCR) |
Tipo: Text |
Palavras-chave: Rade de Cherbourg; Étude biosédimentaire; Impact; Salmoniculture marine; France; Cherbourg; Benthos; Sediment; Environmental impact; Trout; Marine fish farming. |
Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/rapport-3349.pdf |
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Chary, Killian; Callier, Myriam; Coves, Denis; Aubin, Joel; Simon, Julien; Fiandrino, Annie. |
Spatial planning, including zoning and site-selection steps, is necessary to determine locations that minimize environmental impacts of aquaculture and respect ecosystem carrying capacities. This study aimed to analyse potential benthic waste deposition in a broad range of fish farming situations to facilitate zoning. To this end, we simulated waste dispersion for 54 aquaculture scenarios combining three red drum (Sciaenops ocellatus) farm types (Small, Medium, and Large) based on real farm characteristics and 36 sites with contrasting hydrodynamics in Mayotte’s North-East Lagoon. Key forcing variables and parameters of the particle-dispersion model for farms (layout and solid waste fluxes), species (feed- and faeces-settling velocities) and sites (depth... |
Tipo: Text |
Palavras-chave: Aquaculture zones; Carrying-capacity; Environmental impact; Hydrodynamics; NewDEPOMOD; Particle dispersion; Red drum; Scenario analysis. |
Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00666/77810/79985.pdf |
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Lejart, Morgane; Auvray, Cedric; Barillier, Agnes; Cadiou, Bernard; Carlier, Antoine; Delpech, Jean-paul; Folegot, Thomas; Giry, Cyril; Loaec, Jean-marie; Martinez, Ludivine; Prevot, Jehanne. |
The objective of GHYDRO, a France Energies Marines project, is to draw up a methodology guide that provide stakeholders in tidal stream energy projects with decision-making help for the environmental integration of generators and tidal farms. The methodological guide currently represents a summary of the recommendations concerning the diverse physical parameters and biological compartments of the ecosystems that are potentially affected. The physical and biological compartments of the marine ecosystems have been addressed separately in the guide, in order to propose methodologies adapted to each one, in relation to the establishment of the initial state, the characterisation of the potential impacts and the environmental monitoring. To bring together the... |
Tipo: Text |
Palavras-chave: Methodology guide; Environmental impact; Tidal stream energy. |
Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00230/34115/32570.pdf |
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Dary,Eurizângela P.; Ferreira,Efrem; Zuanon,Jansen; Röpke,Cristhiana P.. |
ABSTRACT This study was carried out in a section of the middle course of the Teles Pires River, a clear water river that drains ancient and highly eroded geological formations, and where five hydropower plants are planned or in construction. In this study we tested the hypothesis that local fish fauna is mainly sustained by autochthonous food resources, with modest changes in the trophic structure of fish assemblages along the hydrometric cycle. Sampling was performed every three months between July 2008 and May 2009 at seven sites distributed along a 50-km section of the river. Piscivores was the most representative group in terms of biomass, abundance and species richness, followed by herbivores, insectivores and omnivores. The trophic structure did not... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Environmental impact; Food resources; Temporal dynamics; Trophic ecology. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000400201 |
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De Fries,Lucas; Hahn,Lisiane; Meneses,Bruna Arbo; Câmara,Luís Fernando da; Becker,Fernando Gertum; Hartz,Sandra Maria. |
ABSTRACT We investigated whether the movement and distribution of the migratory fish, Salminus brasiliensis, were affected by a small reservoir. We also examined how movement and distribution were related to water temperature, flow, and rainfall. In December 2011 and January 2012, 24 individuals were captured downstream from the dam, tagged with radio transmitters and released in the reservoir (5.46 km² total area). After being released in the reservoir, 18 of the 24 tagged fish travelled upstream, taking an average of 16.6 days to leave the reservoir, with daily movements varying from < 5 km/day to > 24 km/day. However, only seven tagged specimens (29.16%) returned to the lower reservoir section, while the rest remained in the intermediate and upper... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Fragmentation; Habitat use; Hydroelectric power; Radio telemetry. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000300202 |
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Silva,Cylene C. da; Ferreira,Efrem J. G.; Deus,Cláudia P. de. |
The study of fish diet and its interaction with the environment provides important data on ecology and behavior, as fish face varying environmental and food availability conditions. The aim of the present study was to determine the diet of Bryconops caudomaculatus and Bryconops alburnoides, as well as to assess its seasonal variation, within the area influenced by Balbina Hydroelectric Dam (BHD), in the Uatumã River (Amazon Basin, Brazil). Collections were carried out every two months from April 2005 to February 2007, using gill nets with mesh sizes ranging from 12 to 60 mm between opposite knots. Two methods were used for determining diet: frequency of occurrence and relative volume, which were used to calculate the alimentary index (IAi). Diet similarity... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding ecology; Reservoir; Amazon; Environmental impact. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200011 |
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Albaret, J.J.; Ecoutin, J.-M.. |
La réouverture artificielle de la passe de Grand-Bassam, pratiquée en septembre 1987 dans le but de limiter la prolifération des végétaux aquatiques, a modifié l'environnement et la structure des peuplements ichtyologiques de la partie orientale de la lagune Ebrié (Côte d'Ivoire). Les résultats de deux séries d'observations réalisées en mai 1988 montrent une élévation notable de la salinité et une augmentation de la composante marine au sein des peuplements de poissons par rapport à la situation antérieure (années de référence: 1980 et 1981). |
Tipo: Journal Contribution |
Palavras-chave: Lagoons; Communication; Sea; Environmental impact. |
Ano: 1991 |
URL: http://hdl.handle.net/1834/5371 |
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Registros recuperados: 167 | |
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