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See detailRéponses de Cedrus atlantica aux changements climatiques passés et futurs
Demarteau, Maxime; François, Louis ULg; Cheddadi, Rachid et al

in Geo-Eco-Trop : Revue Internationale de Géologie, de Géographie et d'Ecologie Tropicales (2007)

This work addresses the responses of the Atlas Mountain Cedar tree (Cedrus atlantica Manetti) when faced with past and future climactic changes. The ecological study of this species proposes three ... [more ▼]

This work addresses the responses of the Atlas Mountain Cedar tree (Cedrus atlantica Manetti) when faced with past and future climactic changes. The ecological study of this species proposes three simulations based on reliable and precise data: - Simulation in 6000 B.P. with the GCM UBRIS-HadCM3M2 climatic data - Simulation in the year 2000 with NEW et al. climactic data (2002) - Simulation in the year 2100 with the ARPEGE Climactic Model data - following the IPCC's scenario A2 These simulations were realized using the CARAIB model, which simulates Carbon stocks in vegetation and Carbon flux between vegetation, soil and atmosphere. In part one, the Moroccan Atlas Mountains, which constitute the principal natural area of the Atlas Cedar tree are described in detail. The different data describing this species' distribution at three periods are summarized: 1) at the present time, 2) at Holocene period and 3) at the end of the Upper Pleniglacial period . The distribution of the species is specified. A map of the Cedar tree's actual distribution in Morocco was drawn from a series of population maps - scale 1/25,000- kept at the Moroccan Ministry of Forestry and Water conservation. So as to improve the sequential study of fossils of Cedar pollen was defined the percentage threshold at which samples containing pollen from the Cedrus atlantica are described as autochtonous or allochthonous. The study of 514 samples of Moroccan Cedar pollen permittted to define this threshold as 1% with minimal risk of error. The last part of the work is focused on modelling. It starts with a description of IBM and CARAIB models used in the three simulations. The data essential for these models are reviewed. Considering the climactic data for these three periods, climate is globally warmer in 6000 BP and in 2100 than today, with the problems of drought becoming more severe in the future. The analysis of the three simulations brings us to two conclusions. Cedrus antlantica is sensitive to climactic change and shows that, at three different periods, its potential distribution areas are quite different. At 6000 BP, the species sought refuge in the high mountains of North Africa. Today's distribution is well simulated in our model. Its good survival in Europe makes it an interesting species for reforestation. In 2100, if IPCC's A2 scenario is validated, modifications in the Cedar's potential and real area of distribution will be considerable. The tree will find little refuge in North Africa. On the other hand, the climate of the land between the Northern Alps and the South of Sweden, associated with a strong concentration of CO2 in the atmosphere may well provide it with an acceptable environment. [less ▲]

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See detailSeparate And Combined Disruptions Of Two Exo-Beta-1,3-Glucanase Genes Decrease The Efficiency Of Pichia Anomala (Strain K) Biocontrol Against Botrytis Cinerea On Apple
Friel, D.; Pessoa, Nmg.; Vandenbol, Micheline ULg et al

in Molecular Plant-Microbe Interactions [=MPMI] (2007), 20(4), 371-379

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See detailLe syndrome Piro-like: diagnostic différentiel sur base des symptômes et cas cliniques de cas de syndrome de piro-like incluant les moyens de diagnostic
Amory, Hélène ULg; Pittel, PH

in Proceedings of the Annual meeting of the French Equine Veterinary Association (AVEF) (2007)

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See detailCompte rendu de Naomi RESHOTKO, "Socratic Virtue. Making the Best of the Neither-Good-Nor-Bad"
Gavray, Marc-Antoine ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (2007), (76), 392-393

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See detailReceptive Multilingualism and inter-Scandinavian semicommunication
Zeevaert, Ludger ULg

in ten Thije, Jan; Zeevaert, Ludger (Eds.) Receptive multilingualism. Linguistic analyses, language policies and didactic concepts (2007)

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See detailPeut-on sortir de l'embrouillamini relatif aux contraceptifs oraux et aux cancers cutanés?
Pierard, Gérald ULg; Pierard, Claudine ULg; Quatresooz, Pascale ULg et al

in Revue Médicale de Liège (2007), 62(5-6), 463-6

Skin contains various hormonal receptors, particularly those for estrogens, progesterone and androgens. Steroid hormones of oral contraceptives affect the skin, in particular the control of the cell cycle ... [more ▼]

Skin contains various hormonal receptors, particularly those for estrogens, progesterone and androgens. Steroid hormones of oral contraceptives affect the skin, in particular the control of the cell cycle, DNA replication, apoptosis and other cellular functions. Some estrogen-responsive pathways have the potential to promote tumor development. The question of whether oral contraceptives increase the risk for the development of skin cancer, particularly melanoma, remains an area of concern. There is some evidence that steroid hormones present in oral contraceptives do not significantly increase the risk of developing skin cancer when estrogen exposure is not excessive. [less ▲]

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See detailPotential of Shallow Lake Systems to Trace Environmental Changes Caused by Earthquakes
Avsar; Boes; Hubert-Ferrari et al

Poster (2007)

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See detailRelationship between the evolution of the shoreline and the Posidonia oceanica meadow limit in a Sardinian coastal zone
Tigny, V.; Ozer, André ULg; De Falco, G. et al

in Journal of Coastal Research (2007), 23(3), 787-793

Important environmental changes have been observed for some coastal processes in the Gulf of Oristano (west coast of Sardinia, Italy). With remote sensing as the principal tool, this study aims to assess ... [more ▼]

Important environmental changes have been observed for some coastal processes in the Gulf of Oristano (west coast of Sardinia, Italy). With remote sensing as the principal tool, this study aims to assess littoral evolution over time (1977-2000) and to evaluate whether there is a relationship between the evolutionary trend of the shoreline and that of the upper limit of the Posidonia oceanica (L.) Delile meadow. Results show that some portions of the coastline, mainly located on the sandy part of the littoral, have encountered significant variations that can be partially related to the evolution of the upper limit of the P. oceanica meadow. Mainly of natural origins, this evolutionary trend has also been related to anthropogenic pressures put on the seagrass meadow. This finding confirms that Posidonia meadows significantly affect the littoral geomorphology, providing biogenic sediments, controlling beach slope, and acting as a '' brake '' on coastal water masses. [less ▲]

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See detailCrédit à la consommation et assurance: l'embrouillamini législatif, note sous J.P. Courtrai, 1e mars 2005
Maisetti, Perrine ULg

in Journal des Juges de Paix = Tijdschrift van de Vrederecters (2007)

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See detailHousehod dynamics and the well-beeing after partnership dissolution
Bould, S.; Hartmann, P.; Schmaus, G. et al

Conference (2007)

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See detailSuperfluidity versus Anderson localization in a dilute Bose gas
Paul, T.; Schlagheck, Peter ULg; Leboeuf, P. et al

in Physical Review Letters (2007), 98(21),

We consider the motion of a quasi-one-dimensional beam of Bose-Einstein condensed particles in a disordered region of finite extent. Interaction effects lead to the appearance of two distinct regions of ... [more ▼]

We consider the motion of a quasi-one-dimensional beam of Bose-Einstein condensed particles in a disordered region of finite extent. Interaction effects lead to the appearance of two distinct regions of stationary flow. One is subsonic and corresponds to superfluid motion. The other one is supersonic and dissipative and shows Anderson localization. We compute analytically the interaction-dependent localization length. We also explain the disappearance of the supersonic stationary flow for large disordered samples. [less ▲]

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See detailMajor and trace element geochemistry in a peat core from North Poland.Preliminary results
De Vleeschouwer; Fagel, Nathalie ULg; Cherbukin et al

Poster (2007)

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See detailObservations of comet McNaught from La Silla
Snodgrass, C.; Jehin, Emmanuel ULg; Fitzsimmons, A. et al

Poster (2007)

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See detailLe troisième âge immigré en Région wallonne
Perrin, Nathalie ULg

in Martiniello, Marco; Rea, Andrea; Dassetto, Felice (Eds.) Immigration et intégration en Belgique francophone. Etat des savoirs (2007)

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See detailDiagnostic différentiel des souffles cardiaques en période néonatale chez le poulain
Amory, Hélène ULg

in Nouveau Praticien Vétérinaire Equine (2007)

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See detailLes politiques d'employabilité en Belgique : traitement clinique des chômeurs et traitement statistique du chômage
Orianne, Jean-François ULg; Conter, Bernard

in Recherches Sociologiques et Anthropologiques (2007), XXXVIII(2), 175-190

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See detailDroits et Devoirs
Cormann, Grégory ULg

in Durand, Pascal (Ed.) Les Nouveaux Mots du Pouvoir : Abécédaire critique (2007)

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