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Book Description
LA RESPIRATION DES MICRO-ORGANISMES MARINS EST REPRESENTATIVE DE LA REMINERALISATION DE LA MATIERE ORGANIQUE DISSOUTE ET PARTICULAIRE. EN UTILISANT LE TEST ENZYMATIQUE ETS (ELECTRON TRANSPORT SYSTEM) DE PACKARD POUR APPREHENDER CETTE RESPIRATION, L'INFLUENCE DU FRONT GEOSTROPHIQUE LIGURO-PROVENCAL SUR LA REMINERALISATION, A ETE ETUDIEE POUR CHAQUE SAISON SUR LA SECTION NICE-CALVI. L'ACTIVITE ETS EST QUASI NULLE A 200 M ET REVELE DES ACCUMULATIONS D'ASSEMBLAGES MICROBIENS A 300-400 M ET 800-1000 M. LA DEPENDANCE DE L'HYDROLOGIE EST CONFIRMEE PAR L'ANALYSE DES CORRESPONDANCES MULTIPLES DES DONNEES. LA COMPARAISON DE LA VITESSE ANNUELLE DE PRODUCTION METABOLIQUE DE CO2 DANS LA ZONE CENTRALE, AVEC LE FLUX DE CARBONE PARTICULAIRE CORRESPONDANT (PIEGES A SEDIMENT), N'ATTRIBUE A CE DERNIER QUE 10% DE CONTRIBUTION A LA REMINERALISATION. L'EFFET DU FRONT ALMERIA-ORAN SUR LA DISTRIBUTION SPATIALE DE L'ACTIVITE ETS A ETE OBSERVE DE FACON ANALOGUE DANS LA COUCHE DE SURFACE OU LA COMPOSITION DES ASSEMBLAGES MICROBIENS EST EGALEMENT SOUS INFLUENCE DE L'HYDROLOGIE. EN PROFONDEUR LA DISTRIBUTION SEMBLE PLUS LIEE A LA NATURE DES MASSES D'EAU QU'AUX COURANTS DE SURFACE. LE MOUVEMENT DE ROTATION ANTICYCLONIQUE DES LENTILLES D'EAU MEDITERRANEENNE EN ATLANTIQUE NORD-EST MAINTIENDRAIT LA VITESSE DE REMINERALISATION 3 FOIS SUPERIEURE A CELLE DES EAUX ATLANTIQUES AVOISINANTES. L'ENSEMBLE DES RESULTATS CONFORTE LE CHOIX DE L'APPROCHE SUIVIE POUR QUANTIFIER LA REMINERALISATION
Book Description
LA RESPIRATION DES MICRO-ORGANISMES MARINS EST REPRESENTATIVE DE LA REMINERALISATION DE LA MATIERE ORGANIQUE DISSOUTE ET PARTICULAIRE. EN UTILISANT LE TEST ENZYMATIQUE ETS (ELECTRON TRANSPORT SYSTEM) DE PACKARD POUR APPREHENDER CETTE RESPIRATION, L'INFLUENCE DU FRONT GEOSTROPHIQUE LIGURO-PROVENCAL SUR LA REMINERALISATION, A ETE ETUDIEE POUR CHAQUE SAISON SUR LA SECTION NICE-CALVI. L'ACTIVITE ETS EST QUASI NULLE A 200 M ET REVELE DES ACCUMULATIONS D'ASSEMBLAGES MICROBIENS A 300-400 M ET 800-1000 M. LA DEPENDANCE DE L'HYDROLOGIE EST CONFIRMEE PAR L'ANALYSE DES CORRESPONDANCES MULTIPLES DES DONNEES. LA COMPARAISON DE LA VITESSE ANNUELLE DE PRODUCTION METABOLIQUE DE CO2 DANS LA ZONE CENTRALE, AVEC LE FLUX DE CARBONE PARTICULAIRE CORRESPONDANT (PIEGES A SEDIMENT), N'ATTRIBUE A CE DERNIER QUE 10% DE CONTRIBUTION A LA REMINERALISATION. L'EFFET DU FRONT ALMERIA-ORAN SUR LA DISTRIBUTION SPATIALE DE L'ACTIVITE ETS A ETE OBSERVE DE FACON ANALOGUE DANS LA COUCHE DE SURFACE OU LA COMPOSITION DES ASSEMBLAGES MICROBIENS EST EGALEMENT SOUS INFLUENCE DE L'HYDROLOGIE. EN PROFONDEUR LA DISTRIBUTION SEMBLE PLUS LIEE A LA NATURE DES MASSES D'EAU QU'AUX COURANTS DE SURFACE. LE MOUVEMENT DE ROTATION ANTICYCLONIQUE DES LENTILLES D'EAU MEDITERRANEENNE EN ATLANTIQUE NORD-EST MAINTIENDRAIT LA VITESSE DE REMINERALISATION 3 FOIS SUPERIEURE A CELLE DES EAUX ATLANTIQUES AVOISINANTES. L'ENSEMBLE DES RESULTATS CONFORTE LE CHOIX DE L'APPROCHE SUIVIE POUR QUANTIFIER LA REMINERALISATION
Author: Anne Robert Publisher: ISBN: Category : Languages : en Pages : 187
Book Description
The carbon cycle is mostly driven by production and remineralisation processes which are constraining organic matter concentration along the water column. The main actors of the remineralisation are the heterotrophic prokaryotes, which actions can be measured from surface to deep by the prokaryotic respiration. During this PhD thesis, a long term real time monitoring of hydrological and biogeochemical conditions (potential temperature, salinity and dissolved oxygen O2) has been carried out between 2008 and 2010 in the North Occidental Mediterranean Sea, at the ANTARES site. Influence of punctual events has been observed which seem to be related to winter deep sea convection and subsequent advection, changing hydrological and biogeochemical properties observed at the ANTARES site. These direct or indirect modifications will have consequences on the organic matter concentration and therefore on the deep-sea remineralisation potential. The temporal monitoring of O2 concentration has also allow us to estimate the deep water oxygen consumption of 2.6 μmol O2 dm-3 a-1, during a three year period. The development in our laboratory in collaboration with Centre de Physique des Particules de Marseille (CPPM) of a new equipressured tool, the IODA6000 (In situ Oxygen Dynamics Autosampler), measuring directly and at high frequency the O2 concentration, allowed us to measure PR rates at 2000 m depth since December 2009 at the ANTARES site. This unique ongoing time series shows a mean prokaryotic respiration rates higher (0.2 μmol O2 dm-3 d-1) than expected by literature (5.5 10-3 μmol O2 dm-3 d-1), with a high temporal variability (from 8 10-3 to 0.5 μmol O2 dm-3 d-1).
Author: International Commission for the Scientific Exploration of the Mediterranean Sea Publisher: ISBN: Category : Mediterranean Sea Languages : en Pages : 1144
Author: Linda Strande Publisher: IWA Publishing ISBN: 1780404735 Category : Technology & Engineering Languages : en Pages : 428
Book Description
It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Author: International Commission for the Scientific Exploration of the Mediterranean Sea Publisher: ISBN: Category : Marine biology Languages : en Pages : 734
Author: Eric J. Roose Publisher: CRC Press ISBN: 113546054X Category : Nature Languages : en Pages : 499
Book Description
The most complete, nonpartisan source of information on this hot agronomic topic available today, this book brings together a diverse group of papers and data to resolve the debate between sedimentologists and soil scientists and agronomists over whether the effects of soil erosion on carbon and atmospheric CO2 is beneficial or destructive. Divided into four sections, it offers data on how soil erosion affects soil, water, and air quality. Topics include mineralization rate, inundation, sediment deposition, and global warming potential, as well as carbon dioxide, methane, and nitrous oxide emissions, and the implications of soil erosion on the global carbon cycle and carbon budget.
Author: Dominique Lefèvre
Author: Dominique Lefèvre
Author: Anne Robert
Author: 
Author: International Development Research Centre (Canada)
Author: 
Author: International Commission for the Scientific Exploration of the Mediterranean Sea
Author: Linda Strande
Author: International Commission for the Scientific Exploration of the Mediterranean Sea
Author: Eric J. Roose
Author: