Добірка наукової літератури з теми "Étangs de pisciculture – Lorraine (France)"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Étangs de pisciculture – Lorraine (France)".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Статті в журналах з теми "Étangs de pisciculture – Lorraine (France)":
Schlumberger, O., and N. Bouretz. "Réseaux trophiques et production piscicole en étangs fertilisés (Dordogne, France)." Revue des sciences de l'eau 15, no. 1 (April 12, 2005): 177–92. http://dx.doi.org/10.7202/705445ar.
Дисертації з теми "Étangs de pisciculture – Lorraine (France)":
Four, Brian. "Effet des étangs de barrage à vocation piscicole sur le fonctionnement écologique des cours d'eau de tête de bassin dans des contextes environnementaux différents : le cas des étangs de plaine en Lorraine." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0009/document.
In France there are more than 250,000 ponds. Most often, they are dam reservoirs constructed on headwater streams in clay valleys for fish production and thus named fishponds. In Lorraine region, most of the numerous fishponds are located on temporary streams (i.e. periodically dry during summer time) in agricultural and/or forested catchments. These streams have an ecological functioning based on the integration of allochthonous organic matter (OM) resources by the basal detrital food webs. Yet, fishponds constitute biogenic lentic systems that favor autochthonous OM production (e.g. plankton, macrophytes, faeces). Consequently, fishponds could disrupt the fragile balances in these headwater stream ecosystems. The goal of my thesis was to study the effect of fishpond on the recycling and the integration of allochthonous and autochthonous OM by the aquatic food webs within headwater streams. First, we studied the litter decomposition (and the associated communities) between upstream and downstream fishponds located in agricultural or forested catchments. Our results indicate the needs to take into account the catchment land uses to grasp the fishpond effect on litter decomposition. We found that in agricultural catchments fishponds lead to a decrease of the litter breakdown rate in association with a fungal biomass decrease. In forested catchments, the macro-invertebrate assemblages are more affected than in agricultural catchments, showing a decrease of the most sensitive taxa to organic pollution. Secondly, we focused on litter processes in temporary headwater streams hampered or not by a fishpond. To this end, we worked on forest streams to exclude confounding anthropogenic effects. In this environment our results indicate that the presence of a fishpond tends to increase litter breakdown rate. It can be related with a better litter conditioning and to the shredder assemblage’s modification downstream from the fishpond. Furthermore, fishpond effect on the integration of allochthonous resources by food webs was found to be highly dependent on hydrological conditions downstream from the fishpond. This original result highlights that the impact of the fishpond seems to be greater on the shredder assemblages and on their litter breakdown activities when the stream show important hydrological modifications (i.e. become permanent downstream from the fishpond). Finally, in order to analyze the modification of trophic niches, we studied benthic macroinvertebrate isotopic signatures in streams hampered or not by a fishpond. Our results indicate that fishpond mainly influenced the isotopic signatures of biofilms and suspended OM. In line with this result, isotopic niches of the different macroinvertebrate trophic guilds are also modified downstream from the pond. Consequently we may suggest that all the studied trophic guilds consume and integrate autochthonous resources produced into the fishpond. In summary, our work highlights complex interactions between fishpond and headwater streams and underlines the needs to take into account the catchment land use and the stream hydrology before concluding on the fishpond effect on stream functioning
Le, Cor François. "Étangs et qualité des cours d’eau de têtes de bassins versants agricoles : impact sur le devenir des pesticides et leurs produits de transformation." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0195.
In Lorraine, many fishponds are located at the head of the watershed. These fishponds have the direct effect of breaking the ecological continuum. Their impact on water quality has been shortly studied and remains largely unknown. studies on this matter has shown that, according to fish farming practices, emptying can be an important export phase for nutrients while retention can be expected during the fish production phase. As a result of this work, good management practices (eg not removing water during the passage of the nets, not leaving the sediments exposed during heavy rainfall) have been recommended to producers. In the same way, it was observed during the periods of pesticide application on the upstream watershed, a reduction of the concentrations (dissolved transport) in mother molecules in the stream downstream of the ponds. In view of these results, it is necessary: - to quantify the impact of ponds on dissolved but also particulate fluxes of pesticides; - to evaluate whether the reduction of concentrations downstream of the ponds results in the rejection of metabolites or a true retention / degradation of pesticides within the water bodies; - to assess the retention of phytosanitary products in the sedimentary compartment (in order to anticipate and quantify potential phytosanitary discharges during oil changes and to recommend management practices favorable to the preservation of downstream watercourses); - to appreciate the accumulation in the flesh of the fish to determine the piscicultural practices favorable to the production of fish of quality (even labeled 'Bio') and the preservation of the masses of water. Based on the previous work and supported by bibliographic data, we have established a list of potential pesticides and potentially formed metabolites. After having finalized the development of the analytical methods necessary for the monitoring of water, particulate, sedimentary and fish matrices, the inflow and outflow of ponds will be studied during the whole of an annual cycle of fish exploitation. The sediments will be sampled to determine the periods of accumulation or release by the sedimentary matrix. In order to ensure the safety of the fish produced and to appreciate the links between the quality of the environment and the biota, the accumulation in the fish flesh will be monitored. All the results obtained should allow: - to determine the occurrence of pesticides and their metabolites at the head of agricultural catchment; To appreciate the dissolved and particulate fluxes of these molecules during an annual cycle; - to assess the accumulation of phytosanitary products in sedimentary matrices in order to anticipate the risks of downstream discharges and to recommend management practices that minimize downstream impact; - to evaluate the accumulation of pesticides in fish in order to determine the practices favorable to a good sanitary quality of the fish and the preservation of the environment; - establish in water bodies the links between contaminations of abiotic matrices (ie water, sediments, particles) and biotic matrices (fish)
Didier, Stéphanie. "Le plancton en étangs piscicoles extensifs : production et exportation." Metz, 2003. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2003/Didier.Stephane.SMZ0302.pdf.
The aim of the study was to define a descriptive plan of extensive fish-breeding ponds functioning and to understand ponds-river interactions concerning plankton export and drift from the pond of Lindre (Lorraine) through the river Seille. In a same eutrophic context, morphology of ponds influenced the seasonal pattern of plankton. A very low depth allowed summer colonization of hydrophytes. In deeper ponds, Cyano bacteria bloom couldn't be controlled by plankton-exported biomass. But the upstream part of the river Seille represented an environmental challenge for this exported organic matter. The degradation of this planktonic matter, the drift of Cyanobacteria, and especially their death in the upstream part of the river Seille, displayed the necessity of an acute survey with rregard to the incurrent risk (toxicity)
Goubier, Vincent. "Influence de la fertilisation sur certains compartiments de l'étang de pisciculture." Lyon 1, 1989. http://www.theses.fr/1989LYO10043.
Martin, Goubier Maryse. "Climat et aquaculture : application aux étangs de la Dombes." Lyon 3, 1991. http://www.theses.fr/1991LYO31015.
This work is a study of la dombes'climate and its influence on pond water management, in this french region covered with 10 000 ha of traditionnally managed fish ponds. First, a detailed survey of the regional climate is reported on, based upon observations and measurements from the national weather service. Different parameters are analysed : - rainfall and its geographical distribution, a very important parameter for pond fill up and water level maintenance during summer; - air temperature, which governs the water temperature, and determines the fish species which can be raised and the most favorable rearing periods in the year. - other climatic descriptors : solar radiation, wind characteristics and related processes like evaporation, factors affecting directly or indirectly the thermal structure of water bodies. These "local climate" features are then replaced in the pattern of low-level circulation, which governs climate characteristics in the temperate zone, and therefore in france. Weather successions in la dombes appear to be ordered by general airmass dynamics, and especially by the polar mobile highs. The latter are responsible at the same time for pressure variations, wind, temperature, cloudiness, rain, in brief for permanent weather variability. The local factors in the resulting weather is only responsible for some increase or reduction in
Dubost-Ebersveiller, Nathalie. "Voies de diversification de l'élevage de la carpe Cyprinus carpio L. En Lorraine : avantages, contraintes et limites." Metz, 1996. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1996/Dubost_Ebersveiller.Nathalie.SMZ9653.pdf.
Fish producers are trying to develop new products and processing of carp Cyprinus carpio L. To market fillets seems to be one the solutions that finds customer acceptance. Sexual maturation lowered condition index and filleting yield for females. A relationship was determined between temperature (degree-days) and female total weight to characterize maturation stages. Floating net cages were used to grow or maintain carp for regular availability of fish. Market size carp was obtained three or four months earlier than in extensive production. Two predictive models of carp growth were established and their validity was tested. The influence of food acceptance and of decreasing number of fishes densities limiting production are discussed. The impact of the cages on water and sediment quality were assessed. The budget of solid matter, nitrogen and phosphorus (from both food and faeces) revealed that these elements are rapidly utilized in eutrophic ponds. The impact of environmental conditions on fish culture was investigated. Global toxicity of water was put in relation to the fish densities in the cages. Fouling on floating net cages was quantified. A predictive model of fouling development was determined as a bivariable logistic function of submersion time and net surface. A possibility for combining intense rearing in floating net cages and extensive fish production is described. Advantages and disadvantages are discussed
Otto-Bruc, Cécile. "Végétation des étangs de la Brenne (Indre) : influence des pratiques piscicoles à l'échelle des communautés végétales et sur une espèce d'intérêt européen : Caldesia parnassifolia (L.) Parl." Paris, Muséum national d'histoire naturelle, 2001. http://www.theses.fr/2001MNHN0018.
Robin, Joël. "Dynamique saisonnière du phytoplancton en étang de pisciculture de la plaine du Forez (Loire) : essais de contrôle des cyanobactéries." Lyon 1, 1999. http://www.theses.fr/1999LYO10265.
Bernard, Céline. "L' étang, l'homme et l'oiseau : incidences des modes de gestion des étangs piscicoles sur les ceintures de végétation et l'avifaune nicheuse en Sologne, Brenne, Bresse, Territoire de Belfort et Champagne humide." Lyon, Ecole normale supérieure, 2008. http://www.theses.fr/2008ENSF0054.
The piscicultural ponds are simultaneously economic areas of production by the intermediary of an extensive pisciculture, still strongly marked by traditions, and major ecosystems for the vegetation and the reproduction of water birds in France. The reception capacities of the ponds avifauna are obviously dependent on piscicultural practices which have to be replaced in their historical and socio-economic points of view. The adopted space approach tends to explore the existing interactions between three compartments of the piscicultural system, complex and variable from one area to another: - nesting of the avifauna - belts of aquatic vegetation - the piscicultural management, whose methods condition the economic and ecological potentialities. The comparative analysis of five piscicultural systems in the Sologne, Brenne, Bresse, Territory of Belfort and Wet Champagne has the aim of describing the specific adaptation of the piscicultural activity to their particular geohistorical contexts. It makes it possible to release the conditions under which piscicultural production and reception of the avifauna are set out, supplemented or compete with the possible use by hunting, on the same space: the pond, with its ambiguous and evolutionary definition. The various methods thus described, of balances between practices or possibly of user-conflicts, are used as a framework on a reflexion on the complementarity of the multiple functions of ponds. They pose the topical question of the multifonctionality of spaces largely in debate in the agricultural and forest world
Souchon, Yves. "Reproduction du brochet (Esox lucius,L. 1758) et développement des brochetons en Dombes : éléments d'optimisation des modes de gestion extensive." Lyon 1, 1985. http://www.theses.fr/1985LYO10514.