|
|
|
|
|
| Le Fevre-lehoerff, Geneviève; Ibanez, Frédéric; Poniz, Paola; Fromentin, Jean-marc. |
| Planktonic time series collected since 1975 off Gravelines, France, were analysed in the context of climatic changes. Principal component analysis and the cumulative sums method wereapplied to 30 data sets which included meteorological and hydrological parameters and planktonic descriptors. Eight groups of biological descriptors were linked to external parameters. The study of winds highlighted the importance of cyclonic and anticyclonic influences. Seven year cycles appeared clearly in air temperature and in species abundance with different trophic levels for species such as Ternora longicornis, Oikopleura dioica and Sagitta setosa, whereas an 11 yr cycle appeared for Pseudocalanus minutus. A 3 to 4 yr cycle was detected for atmospheric pressure,... |
| Tipo: Text |
Palavras-chave: Time series; Zooplankton; Meteorology; Hydrology; Southern North Sea. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00033/14455/11757.pdf |
| |
|
| |
|
| |
|
|
| Delesmont, E; Delesmont, Régis; Grossel, Hubert; Le Fevre-lehoerff, Geneviève; Woehrling, Daniel; Dewarumez, Jean-marie; Menu, D.. |
| La stratégie d'étude modifiée en 1989 a pour but de cerner les impacts, par comparaison entre stations et choix d'espèces cibles. La puissance de fonctionnement de la centrale varie au cours de l'année de 4.5 à 6 tranches de 900 MW, le débit de refroidissement varie de 180 à 240 m3/sec. L' échauffement moyen du canal de rej et est de 8.9 0 C. L'eau recyclée es t estimée à 5.4 %. L'impact de transit se traduit par une multiplication intense des Vibrions, un déficit de biomasse chlorophyllienne (60 %), biomasse zooplanctonique (50 %), déficit dans l'abondance des oeufs (30 %) et larves (100 %) de soles. L'impact sur le milieu récepteur est visible dans le compartiment bactérien et sur les espèces benthiques. Le déficit en biomasse benthique subtidale du... |
| Tipo: Text |
Palavras-chave: Sud Mer du Nord; Gravelines; Centrale nucléaire; Impact; Milieux pélagique et benthique; Southern North Sea; Gravelines; Nuclear power plant; Impact Pelagie and benthic ecosystem. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00005/11602/8238.pdf |
| |
|
|
| Savina-, Marie; Lunghi, Mathias; Archambault, B.; Baulier, Loic; Huret, Martin; Le Pape, Olivier. |
| Simulating fish larval drift helps assess the sensitivity of recruitment variability to early life history. An individual-based model (IBM) coupled to a hydrodynamic model was used to simulate common sole larval supply from spawning areas to coastal and estuarine nursery grounds at the meta-population scale (4 assessed stocks), from the southern North Sea to the Bay of Biscay (Western Europe) on a 26-yr time series, from 1982 to 2007. The IBM allowed each particle released to be transported by currents, to grow depending on temperature, to migrate vertically depending on development stage, to die along pelagic stages or to settle successfully on a nursery, representing the life history from spawning to metamorphosis. The model outputs were analysed to... |
| Tipo: Text |
Palavras-chave: Hydrodynamic model; Individual-based model; Larval supply; Nursery grounds; Recruitment variability; Solea solea; Metapopulation; English Channel; Bay of Biscay; Southern North Sea. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00297/40775/39782.pdf |
| |
|
|
|
