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See detailEvolution des dépenses pour la restauration hors domicile
Duquesne, Brigitte ULg; Matendo, Sadrac

Report (2005)

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See detailEvolution des directions et des vitesses des vents de 1951 à 1994 sur la façade Atlantique de l’Afrique de l’Ouest du sud du Sénégal au nord de la Mauritanie.
Ozer, Pierre ULg

in Publications de l'Association Internationale de Climatologie (1996), 9

The Sahel is affected by a severe drought since the late 1960s. This paper analyses the potential fluctuations of wind on a 44-year period (1951-1994) on the Atlantic coast of West Africa. The change in ... [more ▼]

The Sahel is affected by a severe drought since the late 1960s. This paper analyses the potential fluctuations of wind on a 44-year period (1951-1994) on the Atlantic coast of West Africa. The change in wind direction could be a witness of a modification on a synoptic scale. The wind velocity recorded in four meteorological stations does not show any rise which could be linked with a continuous aridification. [less ▲]

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See detailEvolution des échouages et des causes de mortalité des mammifères marins dans le nord de la France (1995-2005)
Jauniaux, Thierry ULg; Brenez, C.; Haelters, J. et al

in annual proceeding (2006)

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See detailÉvolution des effectifs des populations d’éléphants d’Afrique soudanosahélienne :enjeux pour leur conservation
Bouché, Philippe ULg

Doctoral thesis (2012)

The first objective of this thesis was to analyze the evolution of Sudano-Sahelian African elephant populations in a context of environmental challenges and increasing human demography. The second ... [more ▼]

The first objective of this thesis was to analyze the evolution of Sudano-Sahelian African elephant populations in a context of environmental challenges and increasing human demography. The second objective was to propose solutions for elephant conservation in the Sudano-Sahelian context. To fulfill these objectives, aerial surveys have been carried out in every protected area harboring a known population of elephants. This work was first implemented at a local level on several study cases and finally at a global level. Results of aerial surveys estimate the current elephant number at minimum 7,745 elephants, about 2% of the African elephant total population. This confirmed that the elephant populations have been progressively fragmented and confined to few protected areas representing 5% of the Soudano-Sahelian strip. The long term (four decades) elephant population trends has been studied by comparing our results with the database of the study area. The half of the monitored population collapse during the last 40 years. The viability of small elephant population of 200 elephants and below is critical and several of them collapsed. Contrasted local situation have been observed : if a number depletion is often observed, in some protected areas elephant populations are stable or increasing. Although, trends of other large mammals’ population is not linked to that of the elephants. This result allow to conclude that the elephant is not a good indicator of the abundance of other large mammals’ population. Causes of elephant populations’ depletion are both due to climate change (global drought) and socio-economic (human demography and land use pressure) issues. An appropriate and permanent field management, a better valorisation of elephants and the creation of negotiated corridors with local people could garantee the future of Sudano-Sahelian African elephants. [less ▲]

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See detailEvolution des effectifs des Tétras lyres (Tetrao tetrix) dans les Hautes-Fagnes de Belgique
Ruwet, J. C.; Charlet, O.; Groulard, J. M. et al

in Cahiers d'Ethologie (1998), 18(1),

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See detailEvolution des étoiles
Noels-Grötsch, Arlette ULg

Learning material (1990)

Contents: 1. Introduction. 2. Contraction gravifique. 3. Combustion centrale de l'hydrogène. 4. Combustion de l'hydrogène dans les étoiles de masse intermédiaire. 5. Combustion centrale de l'hélium. 6 ... [more ▼]

Contents: 1. Introduction. 2. Contraction gravifique. 3. Combustion centrale de l'hydrogène. 4. Combustion de l'hydrogène dans les étoiles de masse intermédiaire. 5. Combustion centrale de l'hélium. 6. Branche asymptotique des géantes rouges. 7. Etoiles de population II. 8. Etoiles massives. [less ▲]

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See detailEvolution des eucaryotes au précambrien
Javaux, Emmanuelle ULg

Conference (2007)

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See detailEvolution des eucaryotes au Précambrien
Javaux, Emmanuelle ULg

Scientific conference (2004)

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See detailL'évolution des Eucaryotes
Baurain, Denis ULg

Scientific conference (2012, September 20)

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See detailEvolution des forêts - 1.2.2. Taux de boisement actuel
Lecomte, Hugues; Rondeux, Jacques ULg

in Hallet, C.; Malaisse, François (Eds.) Etat de l'environnement wallon 1995 : 3. Forêt et sylviculture (1996)

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See detailEvolution des forêts - 1.2.4. Etendues productives
Lecomte, Hugues; Rondeux, Jacques ULg

in Hallet, C.; Malaisse, François (Eds.) Etat de l'environnement wallon 1995 : 3. Forêt et sylviculture (1996)

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See detailEvolution des forêts - 1.2.5. Composition de la forêt et capital de production
Lecomte, Hugues; Rondeux, Jacques ULg

in Hallet, C.; Malaisse, François (Eds.) Etat de l'environnement wallon 1995 : 3. Forêt et sylviculture (1996)

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See detailEvolution des formes de l'engagement : permanence, déclin ou mutation
Jacquemain, Marc ULg; Delwit, Pascal; Paye, Olivier

in Perrin, Nathalie; Jacquemain, Marc (Eds.) Science Politique en Belgique francophone : analyser la réalité contemporaine (2008)

The chapter synthesize different contributions about the way public involvements are restructuring themselves around new objects and new modes of participation in Europe today.

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See detailEvolution des habitudes de consommation
Winandy, Stéphane ULg; Comps, Samuel ULg

Conference given outside the academic context (2012)

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See detailEvolution des herbiers à Posidonia oceanica (L.) Delile dans la baie de Calvi (Corse, France) et influence de l’ancrage dans la baie de l’Alga
Abadie, Arnaud ULg

Master's dissertation (2012)

In the framework of the STARE-CAPMED program we studied the impact of human activities on Posidonia oceanica meadows in Calvi Bay (Corsica, France). We mostly focused on the consequences of boats ... [more ▼]

In the framework of the STARE-CAPMED program we studied the impact of human activities on Posidonia oceanica meadows in Calvi Bay (Corsica, France). We mostly focused on the consequences of boats anchoring in Alga Bay. The map of the marine habitats realized during this study shows that P. oceanica meadows cover a surface of 4.94 km2 in 2010 and have declined of 26 % since 1997. Advances in the data acquisition techniques allow a better identification of the habitats and a map reliability improvement. In several places in the bay, especially near the waste waters rejection site, the lower limit of the meadow is shallower than in the past. The diminution of the meadow surface in the 21-30 m bathymetric section is more important in the Alga site than in the rest of Calvi Bay. The ecological state of the water surrounding the meadow in Alga was assessed as "good" with a PREI index of 0.685. However, big units anchoring in this area lead to the creation of dead “mattes” whose compactness are medium. In this area, the generation of dead mattes seems to favor the settlement of the invasive Chlorobionta Caulerpa racemosa var. cylindracea, of which anchoring is known to be one of the introduction vectors. [less ▲]

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