The installation of industrial sites to satisfy economic needs, often undermines biodiversity by modifying the landscape. The installation of Sika-Condji quarry by the cleaning of the vegetation has strongly modified the landscape of the locality by the destruction of a part of the pre-existing natural habitat. 
Aware of the risk of degradation of biodiversity, a rehabilitation of the mining site by Scantogo is carried out by planting tree species. However, ''a posteriori'' participatory management of rehabilitated biodiversity can not be done at the end of exploitation; if, from the outset, the preoccupation of local population, users of the resources are not taken into account in rehabilitation programs. Thus, The objective of this study is to integrate the needs of local populations into the Sika-Condji quarry rehabilitation programs.  It aims to: - characterize the floristic and faunistic variations of the plant formations of the quarry - analyze people's perceptions on these variations - to identify the priorities of local populations in reforestation in order to training them on regeneration of woody species.  The purpose of this study is to give local populations the opportunity to appropriate the rehabilitation of their ecosystem in order to facilitate participatory management.Key-words: Participatory management; Sustainable management; Rehabilitation; Ecosystem; Quarry; SiKa-Condji.

Physiognomy of plant formations of backfilled plots

The plots are quickly covered with vegetation within two years; figures a to d. And, the ratio of woody species to total species increases with the age of the formations.

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20mai

3. Characterize vegetation recolonization_Distribution of specific abundances of studied formations

The number of species increases with age on backfilled land. it has even exceeded that of natural formations of areas not yet subject to exploitation. It is explained by: - the anthropization of natural formations, - the abundance of hydrophile species on backfilled sites, - the abundance of field and fallow species on backfilled sites.

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14mai

3. Characterize vegetation recolonization

The aims of this study: - list the species of natural regeneration - evaluate pre-existing trees density of the natural regeneration. Sampling and data collection has been done in quarry's areas undergoing reforestation.

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11mai

Conclusion: Identification of the useful trees with high frequency of use in quarry areas:

The ethnobotany survey identified 64 species of trees useful for the populations among the diversity of the plants of the quarry. Trees with higher frequency of use deserve to be included in the reforestation program. In order to preserve somewhat the ecosystem functions of these plant formations.

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07mai

Identification of magico-mystic trees with high frequency of use in quarry areas

About fifteen species of trees used for ceremonies has been identified. The most frequent are: G. ternifolia, M. excela, D. arborea of FL > 20% ; follow by Z. Zanthoxyloides, N. laevis, S. monbin, C. gigantea of FL between 10 and 20%. Their reforestation will allow to preserve the tradition and the ancestral knowledge of plants mysteries.

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06mai

Identification of the edible trees in quarry areas

The edible trees frequently found in the fields are: M. indica, A. muricata, A. digitata, P. guajava, M. olifera, V. doniana, S. monbin. These fruit species also used as medicinal plants deserve to be included in the reforestation of the quarry. These species, known to local populations, would facilitate the creation of agroforestry systems if land should be cultivated once returned to villagers. Dialium guineense is the fruit species already reforested among the listed species.

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30avr

Identification of the medicinal useful trees in quarry’s areas

the medicinal species widely used are: Morinda lucida, Azadirachta indic, Senna siamea followed by Annona senegalensis, Lonchocarpus erinaceus, Psidium guyajava, Khaya senegalensis.

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27avr

Result: Identification of utilitarian species in quarry areas

64 useful species were cited: - 1 species with a frequency > 50%. This is Morinda lucida localy called Dadakran. It’s an medicinal plant. - 11 species: 25% < Frequency < 50% - 9 species: 15% < Frequency < 25%

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23avr

Methodology for useful species identification

Methods:for a quantitative ethnobotanical approach, the survey was based on individual interviews. Data collection: Respondents are asked to list the trees they used or used where the quarry is currently located for care, feeding, ceremonies and other needs. Data analysis: The fidelity level (answer rate) was calculated for each species.

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21avr

Identification of useful trees with high frequency of use in the areas occupied by the quarry

This study aims to identify the most solicited trees by the riparian populations of the quarry in order to include them in the reforestation program. It is based on a quantitative ethnobotanical approach that indirectly determines the widely used species.

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20avr

Conclusion: Study on the perceptions of populations on vegetation changing

The study of local people's perception on vegetation modification has shown that villagers are aware of the changes affecting their ecosystem. The rarefaction or the disappearance of certain plants which are useful to them are their fears.

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19avr

Result: Categories of uses of plants whose populations fear scarcity / disappearance

The categories of useful plants whose populations fear the rarefaction / disappearance are medicinal plants (100 %), edible plants (85,53 %), religio-magic plants (59,23). The medicinal plants cited by all respondents (100%) show that these populations have a knowledge of the usefulness of plant formations and are dependent on them.

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19avr

Result: Perceptions of local populations on the changing affecting the vegetation

Perceptions of villagers: The riparian populations of the quarry (about 99%) are aware of changes affecting the vegetation. The rarefaction and the disappearance of plants is the consequences given by the respondents.

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19avr

Methodology of study of the perceptions

The study use quantitative ethnobotanical approach to investigate the perceptions of villagers on the changing affecting their ecosystem. 76 individual interviews were held in 6 villages. The answer rates were calculated for the construction of histograms.

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19avr

Perceptions of the rural populations on the floristic variations of the vegetal formation

Activities: 1. Meeting with the delegates of village agricultural groups 2. Ethnobotanical surveys 3. Results 4. Discussion

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19avr

Boosting biodiversity rehabilitation by his appropriation by local populations in Sika-Condji quarry

The research problematic : Vegetation rehabilitation does not take into account the specific diversity of useful trees in degraded areas.

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18avr
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