MIGRATION DELAYS AND MORTALITY OF ADULT ATLANTIC SALMON SALMO SALAR EN ROUTE TO SPAWNING GROUNDS ON THE RIVER ALLIER, FRANCE
(dossier articles) Migration delays and mortality of adult atlantic salmon Salmo salar en route to spawning grounds on the river Allier, France Introduction Materials and methods – Study area – Tracking methods – Statistical analysis Results Discussion Literature cited
MIGRATION BEHAVIOUR OF SILVER EELS (ANGUILLA ANGUILLA) IN A LARGE ESTUARY OF WESTERN EUROPE INFERRED FROM ACOUSTIC TELEMETRY
Migration behaviour of silver eels (Anguilla anguilla) in a large estuary of western Europe inferred from acoustic telemetry 1. Introduction 2. Material and methodes 2.1. Study area 2.2. Environmental data 2.3. Acoustic telemetry array 2.4. Tagging protocol 2.5. Data analysis 3. Results 3.1. Detection efficiency and estuarine survival estimates 3.2. Progression rates and modalities 3.3. […]
NUMERICAL MODELLING OF SUSPENDED SEDIMENT TRANSPORT IN THE LOIRE ESTUARY
Numerical modelling of suspended sediment transport in the Loire estuary In order to evaluate silt displacements and deposits in the outer part of the Loire Estuary over one year, a two-dimensional depth-integrated model of suspended sediment transport has been carried out. It takes into account transport and dispersion of suspended sediment by tidal currents, and […]
NUTRIENTS (ORGANIC C, P, N, Si) IN THE EUTROPHIC RIVER LOIRE (FRANCE) AND ITS ESTUARY
Nutrients (organic C, P, N, Si) in the eutrophic river Loire (France) and its estuary Introduction Sampling strategies and analyses General features of the Loire estuary Nutrient levels in the Loire river Nutrients behaviour in the fluvio-estuarine section and in the inner estuary Nutrient behaviour in the outer estuary Discussion Conclusions Acknowledgements References
CONCENTRATIONS EN NITRATES D’ORIGINE AGRICOLE DANS LES COURS D’EAU ET LES EAUX SOUTERRAINES
Concentrations en nitrates d’origine agricole dans les cours d’eau et les eaux souterraines 1. Le réseau de surveillance de l’année 2010-2011 2. Les nitrates dans les eaux de surface 3. Les nitrates dans les eaux souterraines Note méthodologique Pour en savoir plus
MULTISCALE PATTERNS IN THE DIVERSITY AND ORGANIZATION OF BENTHIC INTERTIDAL FAUNA AMONG FRENCH ATLANTIC ESTUARIES
(dossier articles) Multiscale patterns in the diversity and organization of benthic intertidal fauna among french atlantic estuaries 1. Introduction 2. Material and methods 2.1. Study area 2.2. Physical descriptors 2.3. Biological data 2.4. Data analyses 3. Results 3.1. Among-site comparisons 3.2. Within-site patterns 4. Discussion$ 4.1. Classification of estuarine systems and relation with environmental factors […]
AGE AND SEX DIFFERENCES IN FUEL LOAD AND BIOMETRICS OF AQUATIC WARBLERS ACROCEPHALUS PALUDICOLA AT AN AUTUMN STOPOVER SITE IN THE LOIRE ESTUARY
Age and sex differences in fuel load and biometrics of aquatic warblers acrocephalus paludicola at an autumn stopover site in the Loire estuary Introduction Materials and methods – Sudy area en field work – Laboratory work – Statistical analyses Results – Body mass, fuel loads and potential non-stop flight ranges – Body size measurements – […]
UN TERRITOIRE AGRICOLE CONFORTE PAR LE TISSU AGROALIMENTAIRE
Un territoire agricole conforté par le tissu agroalimentaire Introduction Des espaces agricoles prédominants – Des espaces agricoles grignotés – Des outils de planification au service de la préservation des espaces agricoles L’activité agricole sur le Pôle Ouest : exploitations et exploitants – Un maintien de la surface agricole utile (SAU) sur le Pôle ouest mais […]
L’INDUSTRIE DES ENGRAIS MINERAUX DANS LA REGION NANTAISE
(dossier articles) L’industrie des engrais minéraux dans la région nantaise 1. Les usines et leurs fabrications 2. Le développement de l’industrie des engrais minéraux dans la région nantaise 3. Les principaux caractères de l’industrie nantaise des engrais minéraux
DRAMATIC CHANGES IN A PHYTOPLANKTON COMMUNITY IN RESPONSE TO LOCAL AND GLOBAL PRESSURES: A 24-YEAR SURVEY OF THE RIVER LOIRE
Dramatic changes in a phytoplankton community in response to local and global pressures: a 24-year survey of the river Loire Introduction Materials and methods – Study area – Physico-chemical and phytoplankton data – Data analysis Results – Physico-chemical characteristics – Trend in the variations of the phytoplankton community – Relationship between the phytoplankton community and […]