Aziz BALLOUCHE | Angers University (original) (raw)
Papers by Aziz BALLOUCHE
AARSE 2012, Oct 29, 2012
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Revue de géographie alpine
Revue de géographie alpine
Revue de géographie alpine
HAL (Le Centre pour la Communication Scientifique Directe), 2022
HAL (Le Centre pour la Communication Scientifique Directe), Sep 9, 2019
HAL (Le Centre pour la Communication Scientifique Directe), 2010
HAL (Le Centre pour la Communication Scientifique Directe), Oct 30, 2022
HAL (Le Centre pour la Communication Scientifique Directe), 2016
Norois, Nov 15, 2015
Revue en ligne : http://norois.revues.org www.pur-editions.fr Transferts de pesticides dans un pe... more Revue en ligne : http://norois.revues.org www.pur-editions.fr Transferts de pesticides dans un petit bassin-versant viticole des coteaux du Layon : importance des pics lors du ruissellement Transport of Pesticides in a Small Vineyard Catchment of Layon Valley: High Contribution of Peaks Concentrations during Runoff
HAL (Le Centre pour la Communication Scientifique Directe), Nov 15, 2022
International Journal of Environmental Studies
<p>In the Sudano-Sahelian context, where strong seasonal contrasts characterize the... more <p>In the Sudano-Sahelian context, where strong seasonal contrasts characterize the climatic and hydrological regimes, palaeoenvironmental studies are faced with a real challenge, because the exacerbated hydro-sedimentary functioning generally limits the conservation of quality records. In the middle valley of the Bao Bolon River (Region of Kaffrine, Central Senegal), fluvial sediments constitute useful archives for characterizing past hydrosystems, their paleoenvironments and their hydro-climatic changes. These archives can also record the contemporary landscape dynamics of ancient societies. The region is characterised by human presence for at least two millennia, as evidenced by the megalithic World Heritage Site of Wanar. This megalithic complex has been the subject of archaeological excavations since 2005, recently coupled with geoarchaeological analyses (field geomorphology and soil analysis, chronostratigraphy, sedimentology, geochemistry, organic matter analysis, bio-indicators, fire signal) in order to reconstruct the evolution of the environment at different time scales under natural and anthropogenic forcing. The numerous profiles studied (cores, sections, transects) reveal a richness and consistency of fluvial sedimentary records at the Holocene scale, rare in West Africa.</p><p>At the Holocene scale, regional climatic fluctuations explain the construction of a chronostratigraphic sequence marked by about ten phases of sedimentary aggradation, separated by periods of crisis, even erosion. The last two millennia, which have seen in particular the development of Megalithism, are fairly well documented and make it possible to cross hydro-sedimentary dynamics and anthropogenic action. The periods of funerary activity on the site of Wanar (10th-13th centuries) witnessed significant erosion in the watershed near the site. During the 20th century, the integration of this region into the &#8220;Groundnut Basin&#8221; of Senegal, with a transition towards increasingly intensive agriculture, led to a drastic change in environmental dynamics by an exacerbation of hydro-geomorphological processes: colluviation and slope-wash, gullying and filling of valley bottoms.</p><p>This coupling of the long and short time scales clearly accounts for a gradual transition from a Holocene operating logic to an Anthropocene model.</p>
HAL (Le Centre pour la Communication Scientifique Directe), 2014
International audienceLes mangroves sont des écosystèmes parmi les plus productifs en biomasse, a... more International audienceLes mangroves sont des écosystèmes parmi les plus productifs en biomasse, aux nombreuses fonctions et valeurs majeures. Cette richesse en fait des milieux intensément exploités ce qui se traduit par leur régression rapide à Madagascar notamment.L’objectif est de mettre en évidence par télédétection satellitaire et terrain les caractéristiques des mangroves de la région de Toliara (Madagascar) et leurs dynamiques d’évolution passées faisant la part des changements climatiques et des pressions anthropiques. A partir des paramètres d’évolution identifiés, on définira des scénarios d’évolution future et de gestion des mangroves adaptés à ces contextes.</p
HAL (Le Centre pour la Communication Scientifique Directe), 2012
HAL (Le Centre pour la Communication Scientifique Directe), 2011
AARSE 2012, Oct 29, 2012
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Revue de géographie alpine
Revue de géographie alpine
Revue de géographie alpine
HAL (Le Centre pour la Communication Scientifique Directe), 2022
HAL (Le Centre pour la Communication Scientifique Directe), Sep 9, 2019
HAL (Le Centre pour la Communication Scientifique Directe), 2010
HAL (Le Centre pour la Communication Scientifique Directe), Oct 30, 2022
HAL (Le Centre pour la Communication Scientifique Directe), 2016
Norois, Nov 15, 2015
Revue en ligne : http://norois.revues.org www.pur-editions.fr Transferts de pesticides dans un pe... more Revue en ligne : http://norois.revues.org www.pur-editions.fr Transferts de pesticides dans un petit bassin-versant viticole des coteaux du Layon : importance des pics lors du ruissellement Transport of Pesticides in a Small Vineyard Catchment of Layon Valley: High Contribution of Peaks Concentrations during Runoff
HAL (Le Centre pour la Communication Scientifique Directe), Nov 15, 2022
International Journal of Environmental Studies
<p>In the Sudano-Sahelian context, where strong seasonal contrasts characterize the... more <p>In the Sudano-Sahelian context, where strong seasonal contrasts characterize the climatic and hydrological regimes, palaeoenvironmental studies are faced with a real challenge, because the exacerbated hydro-sedimentary functioning generally limits the conservation of quality records. In the middle valley of the Bao Bolon River (Region of Kaffrine, Central Senegal), fluvial sediments constitute useful archives for characterizing past hydrosystems, their paleoenvironments and their hydro-climatic changes. These archives can also record the contemporary landscape dynamics of ancient societies. The region is characterised by human presence for at least two millennia, as evidenced by the megalithic World Heritage Site of Wanar. This megalithic complex has been the subject of archaeological excavations since 2005, recently coupled with geoarchaeological analyses (field geomorphology and soil analysis, chronostratigraphy, sedimentology, geochemistry, organic matter analysis, bio-indicators, fire signal) in order to reconstruct the evolution of the environment at different time scales under natural and anthropogenic forcing. The numerous profiles studied (cores, sections, transects) reveal a richness and consistency of fluvial sedimentary records at the Holocene scale, rare in West Africa.</p><p>At the Holocene scale, regional climatic fluctuations explain the construction of a chronostratigraphic sequence marked by about ten phases of sedimentary aggradation, separated by periods of crisis, even erosion. The last two millennia, which have seen in particular the development of Megalithism, are fairly well documented and make it possible to cross hydro-sedimentary dynamics and anthropogenic action. The periods of funerary activity on the site of Wanar (10th-13th centuries) witnessed significant erosion in the watershed near the site. During the 20th century, the integration of this region into the &#8220;Groundnut Basin&#8221; of Senegal, with a transition towards increasingly intensive agriculture, led to a drastic change in environmental dynamics by an exacerbation of hydro-geomorphological processes: colluviation and slope-wash, gullying and filling of valley bottoms.</p><p>This coupling of the long and short time scales clearly accounts for a gradual transition from a Holocene operating logic to an Anthropocene model.</p>
HAL (Le Centre pour la Communication Scientifique Directe), 2014
International audienceLes mangroves sont des écosystèmes parmi les plus productifs en biomasse, a... more International audienceLes mangroves sont des écosystèmes parmi les plus productifs en biomasse, aux nombreuses fonctions et valeurs majeures. Cette richesse en fait des milieux intensément exploités ce qui se traduit par leur régression rapide à Madagascar notamment.L’objectif est de mettre en évidence par télédétection satellitaire et terrain les caractéristiques des mangroves de la région de Toliara (Madagascar) et leurs dynamiques d’évolution passées faisant la part des changements climatiques et des pressions anthropiques. A partir des paramètres d’évolution identifiés, on définira des scénarios d’évolution future et de gestion des mangroves adaptés à ces contextes.</p
HAL (Le Centre pour la Communication Scientifique Directe), 2012
HAL (Le Centre pour la Communication Scientifique Directe), 2011