Consulta: subjectFacets:"Algue"
Registros recuperados: 13
Data/hora: 10/06/2024 06:52:48

HYSCORES : Cartographies hyperspectrales appliquées aux écosystèmes coralliens et à leur état de santé.
Provedor de dados: 5
Autores: Ropert, Michel; Mouquet, Pascal; Bajjouk, Touria; Delacourt, Christophe.
En 2013, les résultats des travaux menés dans le cadre des projets "Spectrhabent-OI" (2009-2012), étendus au projet "Bioindication" (2012-2013) ont permis d'illustrer le potentiel important représenté par les nouvelles techniques d'imagerie aérienne hyperspectrale appliquées sur les plateformes récifales de l'île de La Réunion. L'objectif principal du projet HYSCORES (2015-2016) est de consolider ces premiers résultats dans une perspective de mise en œuvre opérationnelle de ces nouvelles méthodes dans le cadre de la DCE (directive-cadre européenne sur l’eau (2000/60/CE)). Pour cela 3 axes de recherche sont proposés : 1) l’étude et l'évaluation de la pertinence de l'indicateur VCH (vitalité corallienne hyperspectrale) proposé en 2012 ; 2) la capacité de...
Tipo: Text
Palavras-chave: Océan Indien; La Réunion; Récifs coralliens; Télédétection; Hyperspectral; Imagerie; Cartographie; Indicateur; Vitalité corallienne; Recouvrements; Algue; Corail; Sable; Herbier.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00350/46122/45820.pdf

Valorisation des algues et autres végétaux aquatiques
Provedor de dados: 5
Autores: Delepine, René; Gaillard, René; Morand, Philippe.
This volume about "Valorisation des algues et autres végétaux aquatiques" is being published when studies are developping on natural environment protection and economical management for water and aquatic resources. It should help in setting up development strategies for exploitation of seaweeds as well as freshwater plants. This work is helpful to many readers and more particularly to : researchers, industrials, responsibles of research units or technical associations, teachers of various academic levels, all classes of dec is ion-makers, students. It will give them food for thought and bring many references about people already committed in these fields.
Tipo: Text
Palavras-chave: Economy; Exploitation; Fresh water plants; Seaweed; Economie; Exploitation; Végétaux  d'eau douce; Algue.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/1988/rapport-1666.pdf

Les algues et invertebres marins des peches françaises. 3e partie
Provedor de dados: 5
Autores: Quero, Jean-claude.
This report is a prerequisite publication of a popular book, synthesizing and summarizing the main data on identification, names, biology and fishing aspects fo more than a hundred species of seaweeds and marine invertebrate
Tipo: Text
Palavras-chave: France; Marine invertebrate; Seaweed; France; Invertébré marin; Algue.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/rapport-1536.pdf

Les algues et invertébrés marins des pêches françaises. 2e partie
Provedor de dados: 5
Autores: Quero, Jean-claude.
This report is a prerequisite publication of a popular book, synthesizing and summarizing the main data on identification, names, biology and fishing aspects fo more than a hundred species of seaweeds and marine invertebrate.
Tipo: Text
Palavras-chave: France; Marine invertebrate; Seaweed; France; Invertébré marin; Algue.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/rapport-1535.pdf

Technique de culture pour les cotes bretonnes de l'algue alimentaire Undaria pinnatifida.  Tableau de marché - étude économique
Provedor de dados: 5
Autores: Perez, René; Kaas, Raymond; Barbaroux, Olivier; Arbault, Suzanne; Le Bayon, Nicolas; Moigne, J.
Introduction Starting in 1986, the ANVAR contributed well appreciated financial support in order to set up an original seeding technique characterized by artificial seeding production in a laboratory. This advantageous new way of seeding, i.e. independency from nature, yield increase and true competitiveness compared to traditional methods, nevertheless requires strict adherence to a procedure progressively elaborated during numerous trials in laboratory as well as at sea. The program ended in July 1989 after testing the cultivation protocol on a 2 hectare exploitation scale, in order to better detect what could be improved to greatly increase productivity, facilitate the work of the harvester and to better adapt the operating mode to environmental...
Tipo: Text
Palavras-chave: Economic survey; Brittany; Farming technique; Seaweed; Undaria pinnatifida; Etude économique; Bretagne; Technique de culture; Algue; Undaria pinnatifida.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/rapport-1659.pdf

Expédition antarctique française (1903-1905) commandée par le Dr Jean Charcot. Diatomacées, mousses, algues
Provedor de dados: 5
Autores: Petit, M; Cardot, J; Hariot, J.
Les Dialomacées de l'Expédition du Dr Charcot forment un ensemble fort intéressant dans lequel on rencontre beaucoup d'espèces rares et peu connues et une grande quantité d'espèces nouvelles. Les récoltes ont été faites: 1 sur la banquise, sur les galets et sur les glaçons, dans le voisinage du lieu de l'hivernage ; 2 dans les sondages à 20 et 25 mètres de profondeur (...) ; 3 sur les Algues floridées et brunes des Iles Booth-Wandel et Wiencke ; 4 sur les Algues des nids de Cormorans. [OCR NON CONTRÔLE]
Tipo: Text
Palavras-chave: Algue; Mousse; Botanique; Diatomacée; Antarctique; Expédition; Campagne; Histoire.
Ano: 1908
URL: http://archimer.ifremer.fr/doc/1908/publication-6960.pdf

Aménagement des pêcheries côtières de Nord-Bretagne, algues-crustacés
Provedor de dados: 5
Autores: Arzel, Pierre.
Today, the seaweed industry's main products are the alginates and carraghenanes. The industrial network faces many problems. However, it remains prosperous since it ranks fifth in the world for alginate production and third for caraghenanes'. This stability which seems safe on a middle term standpoint must not conceal the crisis which previously hit Fucus' exploitation. Rightly so, being harvested until approximately 1950 for soil amendment purposes, coastal kelp (i.e. Fucus), was replaced by chemical fertilizers. Brittany's production which was reaching 180 000 cubic metre in the twenties, close to 200 000 tons of fresh kelp, would have become non existent if it had not been converted into seaweed meal for livestock feed. The market demand was then...
Tipo: Text
Palavras-chave: Coastal fisheries development; North Brittany; Crustacean; Seaweed; Aménagement des pêcheries cotières; Nord Bretagne; Crustacé; Algue.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1591.pdf

Abattement de l'azote par le marais côtier de Kervigen et potentiel breton
Provedor de dados: 5
Autores: Piriou, Jean-yves; Coic, Daniel; Merceron, Michel.
The coastal marsh of Kervigen is located near by the bay of Douarnenez and its 22 hectares are almost entirely covered by reeds. An experiment was there carried out to assess the nitrogen flux depletion of a small stream, the Kerharo. That one has a 45 km 2 mostly agricultural drainage basin. Due to its nitrate loadings to the next sandy beach, it feeds a green algae (Ulva) proliferation. In order to control its nitrogen fluxes, the stream was partly diverted through a part of the marsh (9 ha), before it was allowed to go back to the main bed. Thus a collapsible weir was set up during several springs and summers, i.e. the growing period of Ulva. The nitrate stripping off the going through flux is within a 30 to 90 % range,that is important (175 kg N03...
Tipo: Text
Palavras-chave: Algae; Nitrogen; Ulva; Nitrate depletion; Costal marsh; Algue; Azote; Ulva; Abattement de nitrate; Marais côtier.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-64.pdf

Compte rendu des essais de pêche du Laminaria hyperborea
Provedor de dados: 5
Autores: Arzel, Pierre; Mingant, Christian; Noel, Philippe; Gourronc, Eugene.
Introduction  During the month of April 1994, the "Ressources Halieutiques de l'Ifremer" laboratory (Ifremer Halieutic Resources) in Brest tested tools to be used for the harvesting of Laminaria hyperborea as requested by Système Bio-Industries. The first results of this trial campaign are as follows: The tools are effective as far as interspecific as well as intraspecific selectivity. Rightly so, Laminaria hyperborea accounts for nearly 100% of the harvest. We also noticed that only large size plants are harvested, commercial harvest is satisfactory in terms of yield. However insufficiencies still remain. Comb efficiency is low, since the actual harvest only represents 10 to 12% of the stipes collected when the machine goes through.  This low efficiency...
Tipo: Text
Palavras-chave: Oceanographical campagne; Seaweed; Laminaria hyperborea; Fishing; Campagne océanographique; Algue; Laminaria hyperborea; Pêche.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/1996/rapport-1651.pdf

L'algue japonaise Sargassum muticum (Yendo) fensholt. Caractéristiques et répartition
Provedor de dados: 5
Autores: Loraine, Isabelle.
Sargassum muticum is a Japanese alga from the pheophycee class which has been introduced in Europe about fifteen years ago. It has greatly developed on account of its intrinsic characteristics (adaptation, growth speed, reproduction mode, etc...) and the favorable conditions it has encountered. The nuisance it generates can be very high but no efficient fighting solution has been found yet. Only mechanical means can be considered on a one off basis in areas where eradication is indispensable. Any development is faced with the problem of pick up costs. However the most interesting development for Sargassum muticum would be to utilize it as flocculent for suspended organic substances.  Location updates for Sargassum muticum in France in 1989 did not show any...
Tipo: Text
Palavras-chave: Teledetection; Seaweed; Sargassum muticum; Télédétection; Algue; Sargassum muticum.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1656.pdf

Les algues et invertebres marins des peches françaises.
Provedor de dados: 5
Autores: Quero, Jean-claude.
This report is a prerequisite publication of a popular book, synthesizing and summarizing the main data on identification, names, biology and fishing aspects fo more than a hundred species of seaweeds and marine invertebrate.
Tipo: Text
Palavras-chave: France; Marine invertebrate; Seaweed; France; Invertébré marin; Algue.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/rapport-1534.pdf

Digestibilité de l'algue Skeletonema costatum par la palourde japonaise Ruditapes philippinarum : éléments d'optimisation appliqués à la vénériculture intensive en marais
Provedor de dados: 5
Autores: Sauriau, Pierre-guy; IFREMER - Laboratoire Ecosystèmes Conchylicoles (LEC) La Tremblade; ECOCEAN - Environnement Littoral &amp; Marin La Rochelle.
Le présent rapport se scinde en trois volets. le premier expose la genèse de l'application à l'aquaculture intensive d'une technique employée en agriculture intensive. Le second volet s'attache à comparer les résultats des calculs de taux de digestibilité acquis, d'une part, in vitro sous des conditions de débit circulant et de type nourriture variables et, d'autre part, in situ par prélèvement des palourdes directement dans le système d'élevage. Enfin le dernier volet contient l'analyse des la distribution spatiales des colonies algales de Skeletonema costatum dans une claire ostréicole expérimentale.
Tipo: Text
Palavras-chave: Vénériculture; Marais; Algue; Skeletonema costatum; Digestion; Ruditapes philippinarum; Bivalvia.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00144/25476/23629.pdf

Essai de cryoconservation des gamétophytes de l'algue alimentaire Undaria pinnatifida (Laminariale)
Provedor de dados: 5
Autores: Arbault, Suzanne; Renard, Philippe; Pérez, Rene; Kaas, Raymond.
Low temperature tolerance was determined for gametophytes of food alga Undaria pinnatifida according to various cryopreservation methods. Survival durations after storage in a medium containing 28% glycerol at −80 °C or in a 5-10% glycerol solution at −196 °C were only 9 and 4 days respectively. On the other hand, cooling at 5 °C/min. and storage at −15 °C for 15 minutes, without cryoprotective medium, did not reduce viability but this was highly decreased by storage for 15 minutes at −30 or −196 °C, with or without DMSO. The morphological cooling injuries were depigmentation and/or a contraction of the cells.
Tipo: Text
Palavras-chave: Algue; Cryoconservation; Gamétophyte; Undaria pinnatifida; Alga; Cryopreservation; Gametophyte; Undaria pinnatifida.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00189/30071/28559.pdf