References of "Colinet, Gilles"
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See detailTolerance to copper in the cuprophyte Haumaniastrum Katangense (S. Moore) P.A. Duvign. & Plancke
Chipeng, François; Colinet, Gilles ULg; Ngongo Luhembwe, Michel et al

Poster (2009, March 27)

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See detailMapping of soil-sediment systems contaminations around a metal-ore smelter : The example of Cu in Lubumbashi (R.D.Congo).
Mpundu, Michel; Mukobo, Robert-Prince; Kaya Muyumba, Donato ULg et al

Poster (2009)

The Katanga is famous for its high richness in metal ores, mainly Cu- and Co-minerals. The ore treatments activities lead to metal spreading in the environment which do endanger the viability of ... [more ▼]

The Katanga is famous for its high richness in metal ores, mainly Cu- and Co-minerals. The ore treatments activities lead to metal spreading in the environment which do endanger the viability of ecosystems and human health. The contaminations of soils and sediments around the Gecamines smelter in Lubumbashi have been evaluated through a multi-scale approach. In the first stage, a reference system about the natural contents in soils has been implemented. The main units of the detailed (1:20 000) soil map have been characterized through field observations and laboratory determinations : acido-basic and organic status, particle size distribution, cationic exchange capacity, total contents in Al, Fe, Mn, Cu, Co, Cd, Pb, Zn. An exploratory mapping of soil contaminations (Cu, Co, Cd, Pb, Zn) centered on the Gecamines cheminey was then conducted as a second stage of the approach. Detailed investigations were finally performed in the Gecamines district where signs of soil degradation were the highest. The spatial continuity and the differenciation (C : C0+C ratio) of the studied parameters appeared weak. No clear effect of the dominant wind direction on the spatial distribution of the contaminants could be identified despite a clear degradation of the ecosystem in the area under dominant wind. However the detailed approach showed evidences of (i) significant wind deposits in the Gecamines district, (ii) and local man-made deposits but also (ii) important processes of redistribution in the landscape through erosion/sedimentation or anthropic activities. Our results point out the difficulty to identify the sources of contaminations in an urban environment and stress the need to have approaches with complementary levels of details. [less ▲]

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See detailAppui à la création d’un diplôme d’études approfondies en biologie végétale et environnement à l’Université de Lubumbashi et remédiation multiscalaire des sols contaminés.
Ngongo Luhembwe, M; Bogaert, Jan ULg; Colinet, Gilles ULg et al

in Dahdouh-Guebas, F (Ed.) Proceedings of the Symposium on African Botany in Brussels (2009)

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See detailL'état de fertilité des terres agricoles et forestières en Région wallonne (adapté du chapitre 4 - sol 1 de l'"Etat de l'environnement wallon 2006-2007")
Genot, Valérie ULg; Colinet, Gilles ULg; Brahy, Vincent et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2009), 13(1),

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See detailRegional mapping of pedogeochemical background in Southern Belgium: Combining grid-survey measurements with existing maps of the physical environment.
Colinet, Gilles ULg; Bock, Laurent ULg

Conference (2009)

Among natural factors driving the soil content in metallic trace elements (MTE), the geochemical background is often deemed as a sound base for the detection of contaminations. Numerous studies have shown ... [more ▼]

Among natural factors driving the soil content in metallic trace elements (MTE), the geochemical background is often deemed as a sound base for the detection of contaminations. Numerous studies have shown the difficulties to take into account the multi-dimensionnality of the spatial variability of most soil properties. As far as a detailed soil map is available for Belgium, the relevance of its information was investigated at various spatial scales in the Walloon Region (Southern Belgium), from the plot to the entire region, to evaluate the feasibility of a multi-scale mapping of geochemical background. The soil properties of 410 plots from the regional forest soil monitoring and the relationships with informations related to the physical environment (lithology, soil types...) were investigated through multivariate statistical analysis. Some processes of integration of point measurements and qualitative information were also explored. At the regional scale, some long-range spatial structures could be identified. These result mainly from the geological structure of the Walloon region, where the lithological zonation is rather clearly marked. The soil map (texture and nature of stone charge) appears relevant at that scale too but does need a generalization process and fails however to differenciate the intra-type soil spatial variability. [less ▲]

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See detailVariability of edaphic conditions in metal-contaminated sites at multiple scales. Two case studies in temperate and tropical environments
Colinet, Gilles ULg; Leclercq, Julie; Faucon, Michel-Pierre et al

Conference (2008, August)

In numerous places, mining and ore treatment activities have generated environmental contaminations which endanger ecosystem viability and/or human health. In some places, the ecological pressure induced ... [more ▼]

In numerous places, mining and ore treatment activities have generated environmental contaminations which endanger ecosystem viability and/or human health. In some places, the ecological pressure induced by the metal contaminations allowed the development a specific flora, fromwhich candidates for phytoremediation may be selected. A survey of edaphic conditions prevailing for plant growing in contaminated areas around metal smelters has been conducted in belgian calaminary sites (Zn, Pb, Cd contaminations) and in the Katanga province of RDC (Cu contaminations). As the processes generated by the modifications of the soil environment may affect the form of a trace element, that is its distribution through various pools, we investigated physical and chemical fractionation of some metallic trace elements (Cu, Zn, Pb, and Cd) in soils and compared temperate and tropical cases. The results stress the need for a typology of the contaminations that takes into account the classical pedological parameters, even if contaminated sites are far from classical soil environment. The variability of edaphic properties that can occur within small distances is also an important point to consider when planning rehabilitation operations. [less ▲]

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See detailCRA-W's Committee of Intervention : analyse of catchments polluted with pesticide
Noel, Stephanie; Bah, Boubacar Billo ULg; Colinet, Gilles ULg et al

in 10th International Congress on Mechanization and Energy in Agriculture, 14-17 October 2008, Antalya-Türkiye - Prodeedings (2008)

In the Walloon Region of Belgium, a commlttee of Intervention has been created to Investigate problems of pesticide contamination of various catchments use for drinking water production. This commlttee ... [more ▼]

In the Walloon Region of Belgium, a commlttee of Intervention has been created to Investigate problems of pesticide contamination of various catchments use for drinking water production. This commlttee Involves the Agricultural Research centre - Wallonla (CRA-W, project coordinator) and sorne University experts. It ls funded by the Société Publique de Gestion des Eaux (SPGE). The diagnosis method, base on the AQUAPLAlNE method (Arvalis - France), conslsts of 4 steps. The first step Is the preparation of diagnosls (at the office) that takes into account the paper r1sk of active ingredients. and thelr uses, the identification of the agrtcultural parcels, the collection of cartographie and numeric data, the description of the hydrogeological and pedological contexts and the study of the meteorologlcal data ln relation with the period of pollution. The second step conslsts of maklng a plot diagnosls (on the field) ta Identify the way of transfer inside the plot and collecting data. At the thlrd step, the people who can apply ppp treatment close to the catchment are met (farmers and city services). Information are coJ!ected on treatments applied and on the state of parcels. Based on the hypathesls of pollution cause, the committee proposes solution to solve the problem. One of the catchment that has been investigated by the commlttee is located at Biesmerée, (Namur province, ln Belglum). A temporally contamination was caused by 4 pesticides: chlortoluron, isoproturon, trifluralln and diflufenlcan. After Investigations, it seems that the pollution was probably due ta the hydrogeologlcal context . As the river Is locally perched over the aqulfer, the presence of Poly-aromatic hydrocarbons (PAHs) could be due ta the Infiltration of surface water inside the catchment or/and to the presence of a sinkhole temparaHy activated durlng river flood period. Infiltration rate has ta be assessed and river bank Impermeabilization Is recommended [less ▲]

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