3 research outputs found
Seagrass (Zostera marina L.) bed recolonization after anoxiainduced full mortality. Aquatic Botany 77
Abstract Recolonisation of Zostera marina, following complete destruction caused by an anoxic crisis, was studied in the Thau lagoon (French Mediterranean Sea) from February 1998 to September 1999. The recolonisation took place surprisingly rapidly as biomasses similar to those from untouched areas were reached only nine months after seed germination. The recolonisation success was partly due to a high seedling survival rate as well as a rapid vegetative recruitment (ranging from 0.012 to 0.042 per day). Two phases of recovery could be observed: a rapid multiplication of shoots during the first 3 months was followed by an increase in biomass due to elongation of leaves. During the first year of recolonisation no flowering shoot was observed whilst reproductive effort was considerable during the second year. In case of two consecutive anoxic crises at the same site, the recovery would have probably been much slower, since the annual seedbank would have been depleted
Le français : des mots de chacun, une langue pour tous
Vraie problĂ©matique linguistique, socio-Ă©conomique et culturelle que traitent dans ce volume des chercheurs et des universitaires, des enseignants et des hommes dâaffaires, des juristes et des Ă©crivains. Comment faire pour que les mots spĂ©cialisĂ©s de nos professions, ancrĂ©s dans des savoir-faire, deviennent Ă©galement les formes ouvertes dâune langue Ă partager ? Comment faire aussi pour que les mots de tous les jours, ceux des enfants des banlieues comme ceux des fils de la terre, soient les gages dâune comprĂ©hension et dâune reconnaissance mutuelles, dâun accĂšs Ă la langue des pĂšres, dans une sociĂ©tĂ© en perpĂ©tuel mouvement ? Comment faire encore pour mettre en rĂ©sonance les accents des français rĂ©gionaux et les Ă©chos lointains des français de la francophonie, afin que se dĂ©ploie plus largement cet idĂ©al linguistique commun ? Autant de questions qui trouvent leur champ de rĂ©flexion et leur voie de rĂ©ponse dans les diffĂ©rentes parties de cet ouvrage : le lecteur chemine dâabord Ă travers les accents du français parlĂ©, en France et dans la francophonie, pĂ©nĂštre au cĆur des particularitĂ©s de lâĂ©crit, rĂ©flĂ©chit aux conditions des Ă©changes et du partage de la langue pour pĂ©nĂ©trer enfin dans le monde des poĂštes et sâinitier aux enchantements de la langue littĂ©raire qui nâa cessĂ© de dire la vie, la jouissance et la fortune des mots dâoĂč quâils proviennent, ceux de La PlĂ©iade, archaĂŻques, techniques ou dialectaux, ceux des poĂštes modernes, riches de sensations, constellĂ©s dâassociations, pleins de fulgurances, ceux de LĂ©opold Sedar Senghor, vibrant aux accords de lâAfrique et de la France, fondues dans une mythologie neuve, faite de valeurs singuliĂšres mais partagĂ©es, mĂ©tissĂ©es par deux cultures dans une mĂȘme vision poĂ©tique. Finalement, câest encore lĂ une belle escale dans le temps et lâespace que cette troisiĂšme Ă©tape du voyage au long cours que constituent les Lyriades renouvelĂ©es de la langue française. Cet ouvrage est issu des 3e journĂ©es de la langue française, Les Lyriades, qui se sont tenues Ă LirĂ© en Anjou, les 19-20-21 mai 2006. Il a Ă©tĂ© conçu sous la direction de Françoise Argod-Dutard, professeur des universitĂ©s et responsable du comitĂ© scientifique avec la collaboration de Dominique Beaumon, coordonnateur des Lyriades
PHYTOBS dataset - French National Service of Observation for Phytoplankton in coastal waters
The PHYTOBS dataset includes long-term time series on marine microphytoplankton, since 1987, along the whole French metropolitan coast. Microphytoplankton data cover microscopic taxonomic identifications and counts. The whole dataset is available, it includes 25 sampling locations.PHYTOBS network studies microphytoplankton diversity in the hydrological context along French coasts under gradients of anthropogenic pressures. PHYTOBS network allows to analyse the responses of phytoplankton communities to environmental changes, to assess the quality of the coastal environment through indicators, to define ecological niches, to detect variations in bloom phenology, and to support any scientific question by providing data.The PHYTOBS network provides the scientific community and stakeholders with validated and qualified data, in order to improve knowledge regarding biomass, abundance and composition of marine microphytoplankton in coastal and lagoon waters in their hydrological context.PHYTOBS originates of two networks. The historical REPHY (French Observation and Monitoring program for Phytoplankton and Hydrology in coastal waters) supported by Ifremer since 1984 and the SOMLIT (Service d'observation en milieu littoral) supported by INSU-CNRS since 1995. The monitoring has started in 1987 on some sites and later in others.Hydrological data are provided by REPHY or SOMLIT network as a function of site locations