13 research outputs found
Religion traditionnelle et gestion durable des ressources floristiques en CĂŽte d'Ivoire : Le cas des EhotilĂ©, riverains du Parc National des Ăles EhotilĂ©
Les iles EhotilĂ© Ă©mergent de la lagune Aby, au Sud-est de la CĂŽte d'Ivoire. Elles ont Ă©tĂ© Ă©rigĂ©es en Parc National, sur lâinitiative du peuple EhotilĂ©, initiative soutenue par des manifestions de sa religion traditionnelle. Dans une perspective de mise en place dâun systĂšme de cogestion de ce Parc, une premiĂšre analyse des fondements sociaux et culturels, contribuant Ă la conservation des ressources naturelles est en cours. Ainsi, cette Ă©tude, volet dâune enquĂȘte ethnobotanique dans quatre villages EhotilĂ©, montre que, chez les EhotilĂ©, certains aspects de la religion traditionnelle (la fonction du Komian, le culte du Nyango et les lieux sacrĂ©s), ont un impact perceptible sur la conservation des espĂšces vĂ©gĂ©tales. MalgrĂ© les mutations quâelle subit face aux pressions sociales, cette religion est encore vivace chez les EhotilĂ© et ne saurait ĂȘtre, Ă notre avis, occultĂ©e dans la mise en place dâune politique de cogestion du Parc National des Iles EhotilĂ©.EhotilĂ© Islands emerge from the Aby lagoon, in the South-east CĂŽte d'Ivoire. There were established to National Park on the EhotilĂ© peopleâs initiative, supported by their traditional religion demonstrations. In a perspective of a co-management of this park, a first analysis of social and cultural foundation contributing to the conservation of natural resources is taking place. Thus, this work is a part of an ethnobotanical survey led in four EhotilĂ© villages. It shows that some aspects of EhotilĂ© religion (the function of Komian, the worship of Nyango and the sacred sites) have a perceptible impact on the conservation of plant resources. Despite the changes due to social pressures, this religion is still alive among EhotilĂ© people, and in our view, cannot be glossed over in the implementation of a policy of co-management of the EhotilĂ© Island National Park
Religion traditionnelle et gestion durable des ressources floristiques en CĂŽte d'Ivoire : Le cas des EhotilĂ©, riverains du Parc National des Ăles EhotilĂ©
Les iles EhotilĂ© Ă©mergent de la lagune Aby, au Sud-est de la CĂŽte d'Ivoire. Elles ont Ă©tĂ© Ă©rigĂ©es en Parc National, sur lâinitiative du peuple EhotilĂ©, initiative soutenue par des manifestions de sa religion traditionnelle. Dans une perspective de mise en place dâun systĂšme de cogestion de ce Parc, une premiĂšre analyse des fondements sociaux et culturels, contribuant Ă la conservation des ressources naturelles est en cours. Ainsi, cette Ă©tude, volet dâune enquĂȘte ethnobotanique dans quatre villages EhotilĂ©, montre que, chez les EhotilĂ©, certains aspects de la religion traditionnelle (la fonction du Komian, le culte du Nyango et les lieux sacrĂ©s), ont un impact perceptible sur la conservation des espĂšces vĂ©gĂ©tales. MalgrĂ© les mutations quâelle subit face aux pressions sociales, cette religion est encore vivace chez les EhotilĂ© et ne saurait ĂȘtre, Ă notre avis, occultĂ©e dans la mise en place dâune politique de cogestion du Parc National des Iles EhotilĂ©.EhotilĂ© Islands emerge from the Aby lagoon, in the South-east CĂŽte d'Ivoire. There were established to National Park on the EhotilĂ© peopleâs initiative, supported by their traditional religion demonstrations. In a perspective of a co-management of this park, a first analysis of social and cultural foundation contributing to the conservation of natural resources is taking place. Thus, this work is a part of an ethnobotanical survey led in four EhotilĂ© villages. It shows that some aspects of EhotilĂ© religion (the function of Komian, the worship of Nyango and the sacred sites) have a perceptible impact on the conservation of plant resources. Despite the changes due to social pressures, this religion is still alive among EhotilĂ© people, and in our view, cannot be glossed over in the implementation of a policy of co-management of the EhotilĂ© Island National Park
Wild edible plants in the Ehotilé, a fishing people around Aby lagoon (eastern littoral of CÎte d'Ivoire): Knowledge and availability
This study is set within the important framework of the imperative need to safeguard traditional knowledge at historical, nutritional levels, and as an element of sustainable management of natural resources. Thus, it aimed to identify, through four ethnobotanical surveys (2007, 2009, 2015 and 2019), the wild edible plants used by the Ehotilé around the Aby Lagoon, on the Ivorian eastern littoral, to evaluate the use, preference and availability related to these plants and to discuss the evolution of food practices since the observations of missionaries three centuries earlier. The level of knowledge was analysed using Smith's Index and the availability of edible fruits was assessed with a new cognitive index. Compared to the era of the first settlement, the diet of the Ehotilé has undergone many modifications. Current observations showed that wild plants were rarely used in the diet which was essentially cassava-based. Thirty-nine edible ethnospecies corresponding to 40 scientific plants species were recorded for 46 uses, of which, wild fruits with 54.17 % were the most important. Edible fruits were available all year round, but irregularly and the availability index suggested that 10 species of the fruits sought were rare in the region. The study has shown that gathering plants are well known by the Ehotilé. However, they are not very present in their diet. In addition, they have a good knowledge of the availability of their edible plants and could therefore be key resource persons in any assessment of the dynamics of plants in their environment
Dynamique Spatio-Temporelle et IntĂ©rĂȘt pour la Conservation de la ForĂȘt ClassĂ©e de Goin-DĂ©bĂ©, une Aire ProtĂ©gĂ©e MenacĂ©e de Disparition Ă lâOuest de la CĂŽte dâIvoire
La forĂȘt classĂ©e de Goin-DĂ©bĂ© considĂ©rĂ©e comme zone dâimportance pour la biodiversitĂ©, est depuis la crise post-Ă©lectorale, lâobjet dâexploitations agricoles et dâinfiltrations par des paysans mettant ainsi en pĂ©ril son statut de refuge de la biodiversitĂ©. Ainsi, cette Ă©tude vise Ă©valuer lâĂ©tat de conservation de la vĂ©gĂ©tation et de la flore de cette forĂȘt. Lâexploitation des images satellitaires couplĂ©e aux analyses des donnĂ©es dâinventaire floristique rĂ©vĂšlent des dynamiques diamĂ©tralement opposĂ©es entre les pĂ©riodes 1988 Ă 1998 et 1998 Ă 2020 dans la vĂ©gĂ©tation. La premiĂšre pĂ©riode a Ă©tĂ© marquĂ©e par un gain considĂ©rable en termes de superficie des jachĂšres du sud-ouest au nord-ouest de la forĂȘt classĂ©e. Alors que la seconde a vu une rĂ©gression significative des surfaces des formations vĂ©gĂ©tales au profit des exploitations cacaoyĂšres. Les relevĂ©s floristiques ont permis dâinventorier 220 espĂšces appartenant Ă 176 genres rĂ©partis en 63 familles. Cette flore comporte 15 espĂšces Ă statut particulier selon la liste rouge de lâUICN (2020, 2021 & 2022) et 22 espĂšces endĂ©miques du bloc forestier de la Haute GuinĂ©e (GCW), entre autres Ă©lĂ©ments qui confĂšrent Ă cette forĂȘt un intĂ©rĂȘt particulier pour la conservation.
Since the post-electoral crisis, the Goin-Débé classified forest, considered as an area of importance for biodiversity, has been subject to agricultural exploitation and infiltration by peasants, thus jeopardizing its status as a biodiversity refuge. The aim of this study is to assess the state of conservation of the forest's vegetation and flora. Satellite images and floristic inventory data reveal diametrically opposed vegetation dynamics between the periods 1988 to 1998 and 1998 to 2020. The first period was marked by a considerable gain in fallow area from the south-west to the north-west of the classified forest. The second period, on the other hand, saw a significant decline in the area of plant formations in favor of cocoa farms. Floristic surveys have identified 220 species belonging to 176 genera divided into 63 families. This flora includes 15 species with special status according to the IUCN Red List (2020, 2021 & 2022) and 22 species endemic to the Upper Guinea Forest Block (GCW), among other elements that give this forest a particular interest for conservation
DiversitĂ© Floristique Et Valeur De Conservation De La ForĂȘt ClassĂ©e De Nâganda-Nâganda (Sud-Est De La Cote Dâivoire)
LâĂ©tude a Ă©tĂ© entreprise en vue de contribuer Ă une meilleure connaissance de la flore de la forĂȘt classĂ©e de Nâganda-Nâganda. Pour ce faire, la technique de relevĂ©s itinĂ©rants a Ă©tĂ© utilisĂ©e. Les inventaires itinĂ©rants ont permis dâobtenir une liste de 445 espĂšces de plantes rĂ©parties en 293 genres et 96 familles. Les familles les plus dominantes diffĂšrent dâun milieu Ă un autre. Les Rubiaceae sont parmi les familles prĂ©pondĂ©rantes, quel que soit le type de milieu. Les types biologiques sont dominĂ©s par les phanĂ©rophytes Ă plus de 60 %. Le spectre phytogĂ©ographique est marquĂ© par une dominance des espĂšces GuinĂ©o-Congolaises, dans les deux types de forĂȘts. En savane, les hĂ©micryptopytes sont les types biologiques les plus dominants. Le nombre Ă©levĂ© dâespĂšces endĂ©miques de Haute GuinĂ©e (58) et ivoiriennes (09) couplĂ© par la prĂ©sence de 22 taxons classĂ©s de rares, devenus rares et en voie dâextinction pour la flore de la CĂŽte dâIvoire et de 20 taxons de la liste rouge de lâUICN (2015), reprĂ©sente sa caractĂ©ristique particuliĂšre. Les traits particuliers de cette flore doivent susciter plus dâattention de la part des gestionnaires de cette forĂȘt.
This study focuses on providing a better knowledge of the flora of N'ganda-N'ganda forest. The itinerant survey technique was used, and this made it possible to obtain a list of 445 species which was distributed between 293 genera and 96 families. The most dominant families deffer by space. Rubiaceae was between dominated families and all types of spaces. The biological types are dominated more than 60% by the phanerophyts. Phytogeographic spectrum is marked by a strong dominance of species known as Guineo-Congolese in two types of forest. In Savanah, hemicryptophyts was the most dominated biological types. The high number of endemic species from Upper Guinea (58) and Ivorian (9), coupled with the presence of 22 taxa classified as rare and endangered for the flora of CĂŽte d'Ivoire and 20 taxa of IUCN Red List (2015), represents its special character. Particular traits of this flora should attract more attention from managers of this forest
Dynamique Spatio-Temporelle et IntĂ©rĂȘt Pour la Conservation de la ForĂȘt ClassĂ©e de Goin-DĂ©bĂ©, Une Aire ProtĂ©gĂ©e MenacĂ©e de Disparition Ă lâOuest de la CĂŽte dâIvoire
La forĂȘt classĂ©e de Goin-DĂ©bĂ© considĂ©rĂ©e comme zone dâimportance pour la biodiversitĂ©, est depuis la crise post-Ă©lectorale, lâobjet dâexploitations agricoles et dâinfiltrations par des paysans, mettant ainsi en pĂ©ril son statut de refuge de la biodiversitĂ©. Ainsi, cette Ă©tude vise Ă Ă©valuer lâĂ©tat de conservation de la vĂ©gĂ©tation et de la flore de cette forĂȘt. Pour ce faire, une Ă©tude diachronique a dâabord Ă©tĂ© effectuĂ©e Ă partir des images satellitaires Landsat TM des annĂ©es 1988 et 1998 et des images Landsat OLI/TIRS de lâannĂ©e 2020. Ensuite, un inventaire floristique a Ă©tĂ© effectuĂ© dans les diffĂ©rentes formations vĂ©gĂ©tales de la forĂȘt classĂ©e. Lâexploitation des images satellitaires couplĂ©e aux analyses des donnĂ©es dâinventaire floristique rĂ©vĂšle des dynamiques diamĂ©tralement opposĂ©es entre les pĂ©riodes 1988 Ă 1998 et 1998 Ă 2020 dans la vĂ©gĂ©tation. La premiĂšre pĂ©riode a Ă©tĂ© marquĂ©e par un gain considĂ©rable en termes de superficie des jachĂšres du sud-ouest au nord-ouest de la forĂȘt classĂ©e. Alors que la seconde a vu une rĂ©gression significative des surfaces des formations vĂ©gĂ©tales au profit des exploitations cacaoyĂšres. Les relevĂ©s floristiques ont permis dâinventorier 220 espĂšces appartenant Ă 176 genres rĂ©partis en 63 familles. Cette flore comporte 15 espĂšces menacĂ©es (1 EN, 13 VU, 1 NT) et 22 espĂšces endĂ©miques du bloc forestier de la Haute GuinĂ©e (GCW). Ces espĂšces, entre autres Ă©lĂ©ments, confĂšrent Ă cette forĂȘt un intĂ©rĂȘt particulier qui devrait susciter plus dâactions pour sa conservation.
Since the post-electoral crisis, the Goin-Débé classified forest, considered as an area of importance for biodiversity, has been subject to agricultural exploitation and infiltration by peasants, thus jeopardizing its status as a biodiversity refuge. The aim of this study is to assess the state of conservation of the forest's vegetation and flora. To do this, a diachronic study was first carried out using Landsat TM satellite images from 1988 and 1998 and OLI/TIRS images from. Next, a floristic inventory was carried out in the different plant formations of the classified forest. Satellite images and floristic inventory data reveal diametrically opposed vegetation dynamics between the periods 1988 to 1998 and 1998 to 2020. The first period was marked by a considerable gain in fallow area from the south-west to the north-west of the classified forest. The second period, on the other hand, saw a significant decline in the area of plant formations in favor of cocoa farms. Floristic surveys have identified 220 species belonging to 176 genera divided into 63 families. This flora includes 15 threatened species (1 EN, 13 VU, 1 NT) and 22 species endemic to the Upper Guinea Forest Block (GCW), among other elements that give this forest a particular interest for conservation
Dynamique Spatio-Temporelle et IntĂ©rĂȘt pour la Conservation de la ForĂȘt ClassĂ©e de Goin-DĂ©bĂ©, une Aire ProtĂ©gĂ©e MenacĂ©e de Disparition Ă lâOuest de la CĂŽte dâIvoire
La forĂȘt classĂ©e de Goin-DĂ©bĂ© considĂ©rĂ©e comme zone dâimportance pour la biodiversitĂ©, est depuis la crise post-Ă©lectorale, lâobjet dâexploitations agricoles et dâinfiltrations par des paysans mettant ainsi en pĂ©ril son statut de refuge de la biodiversitĂ©. Ainsi, cette Ă©tude vise Ă©valuer lâĂ©tat de conservation de la vĂ©gĂ©tation et de la flore de cette forĂȘt. Lâexploitation des images satellitaires couplĂ©e aux analyses des donnĂ©es dâinventaire floristique rĂ©vĂšlent des dynamiques diamĂ©tralement opposĂ©es entre les pĂ©riodes 1988 Ă 1998 et 1998 Ă 2020 dans la vĂ©gĂ©tation. La premiĂšre pĂ©riode a Ă©tĂ© marquĂ©e par un gain considĂ©rable en termes de superficie des jachĂšres du sud-ouest au nord-ouest de la forĂȘt classĂ©e. Alors que la seconde a vu une rĂ©gression significative des surfaces des formations vĂ©gĂ©tales au profit des exploitations cacaoyĂšres. Les relevĂ©s floristiques ont permis dâinventorier 220 espĂšces appartenant Ă 176 genres rĂ©partis en 63 familles. Cette flore comporte 15 espĂšces Ă statut particulier selon la liste rouge de lâUICN (2020, 2021 & 2022) et 22 espĂšces endĂ©miques du bloc forestier de la Haute GuinĂ©e (GCW), entre autres Ă©lĂ©ments qui confĂšrent Ă cette forĂȘt un intĂ©rĂȘt particulier pour la conservation.
Since the post-electoral crisis, the Goin-Débé classified forest, considered as an area of importance for biodiversity, has been subject to agricultural exploitation and infiltration by peasants, thus jeopardizing its status as a biodiversity refuge. The aim of this study is to assess the state of conservation of the forest's vegetation and flora. Satellite images and floristic inventory data reveal diametrically opposed vegetation dynamics between the periods 1988 to 1998 and 1998 to 2020. The first period was marked by a considerable gain in fallow area from the south-west to the north-west of the classified forest. The second period, on the other hand, saw a significant decline in the area of plant formations in favor of cocoa farms. Floristic surveys have identified 220 species belonging to 176 genera divided into 63 families. This flora includes 15 species with special status according to the IUCN Red List (2020, 2021 & 2022) and 22 species endemic to the Upper Guinea Forest Block (GCW), among other elements that give this forest a particular interest for conservation
Ătude Ethnobotanique Des Plantes UtilisĂ©es Dans Lâartisanat Chez Les Agni Du Centre-Est Et Nord-Est De La CĂŽte dâIvoire
Dans le but de valoriser le savoir traditionnel des plantes utilisĂ©es dans lâartisanat, une enquĂȘte ethnobotanique a Ă©tĂ© conduite chez quatre tribus Agni du Centre-est et du Nord-est de la CĂŽte dâIvoire. Les entretiens semi-structurĂ©s Ă travers lâapproche du « porte-Ă -porte » suivis de randonnĂ©es dans le milieu environnant ont permis dâobtenir les informations sur lâusage des plantes. Cette Ă©tude a montrĂ© que 104 espĂšces rĂ©parties en 95 genres et 35 familles sont utilisĂ©es dans lâartisanat. Pour ces quatre tribus, seulement 14,42% des plantes ont un indice dâimportance culturelle Ă©levĂ©. Il sâagit entre autres de Baissea multiflora, Holarrhena floribunda, Mansonia altissima, Nauclea diderrichii, Nesogordonia papaverifera, Pseudocedrela kotschyi, etc. Lâanalyse du coefficient de Jaccard a montrĂ© des diffĂ©rences majeures au niveau de lâusage des plantes entre ces quatre communautĂ©s, avec seulement 13,46% dâusage commun. Il a Ă©tĂ© Ă©galement observĂ© que les savoirs liĂ©s aux plantes Ă usage artisanal sâĂ©rodent progressivement, Ă cause notamment de lâabondance des matĂ©riaux modernes et surtout de la rarĂ©faction des plantes utilisĂ©es due Ă la dĂ©gradation de lâenvironnement.
An ethnobotanical survey was conducted among four Agni tribes in the central-eastern and north-eastern parts of CĂŽte dâIvoire. This study aimed to valorize the traditional knowledge of plants used in handicrafts. Semi-structured interviews through the "door-to-door" approach followed by walks in the adjacent vegetation provided information on the use of plants. This study showed that 104 species divided into 95 genera and 35 families are used in local handicrafts. For these four tribes, only 14.42% of the plants have a high index of cultural importance. These include Baissea multiflora, Holarrhena floribunda, Mansonia altissima, Nauclea diderrichii, Nesogordonia papaverifera, Pseudocedrela kotschyi etc. The analysis of Jaccard's coefficient showed differences in the use of plants between these four communities, with only 13.46% of these plants in common use. The knowledge related to plants for artisanal use is gradually deteriorating, for several reasons: obsolescence of uses, the unavailability of plants due to environmental degradation and competition with modern materials
CaractĂ©risation phytosociologique des anciens sites de traitements sylvicoles et de la rĂ©serve naturelle dans le parc national du Banco (Abidjan-CĂŽte dâIvoire)
La perturbation des milieux est Ă lâorigine de la destruction des habitats, elle contribue Ă la perte de la biodiversitĂ© et est une des causes du changement de la flore dans une localitĂ©. Elle entraine par consĂ©quent la transformation des associations vĂ©gĂ©tales. Lâobjectif principal de cette Ă©tude est de rechercher les associations vĂ©gĂ©tales dans le parc national du Banco suite aux plantations villageoises et aux essais sylvicoles dus Ă la recherche dâune mĂ©thodologie propre Ă la sylviculture africaine. Pour ce faire, la caractĂ©risation phytosociologique des anciens sites de traitements et de la rĂ©serve forestiĂšre a Ă©tĂ© rĂ©alisĂ©e. La mĂ©thode utilisĂ©e est celle de la phytosociologie synusiale. Les 91 relevĂ©s (82 dans les anciens sites de traitements sylvicoles et 9 dans la rĂ©serve forestiĂšre) ont permis de recenser 337 espĂšces de plantes rĂ©parties en 65 familles et 268 genres. Le dendrogramme issu de la classification hiĂ©rarchique ascendante des relevĂ©s a mis en Ă©vidence trois syntaxons dont deux sont constituĂ©s essentiellement des relevĂ©s des anciens sites de traitements et un des relevĂ©s de la rĂ©serve forestiĂšre. Aucun syntaxon ne renferme la totalitĂ© des espĂšces caractĂ©ristiques de lâassociation Turraeantho-Heisterietum. Cependant, dans deux syntaxons, la proportion des espĂšces caractĂ©ristiques de cette association est supĂ©rieure Ă 50%. 70,59% dans le syntaxon Ă Tarrietia utilis et Cola heterophylla (syntaxon des forĂȘts secondaires), 52,94% dans le syntaxon Ă Cola chlamydantha et Drypetes chevalieri (syntaxon de la rĂ©serve forestiĂšre). Alors que dans le syntaxon Ă Dacryodes klaineana et Pleiocarpa mutica (syntaxon des forĂȘts secondaires), 41% de ces espĂšces caractĂ©ristiques ont Ă©tĂ© enregistrĂ©es. Les espĂšces caractĂ©ristiques des autres formations forestiĂšres sont Ă©galement peu reprĂ©sentĂ©es dans les syntaxons (moins de 40%). Il ressort donc de cette Ă©tude que le parc national du Banco demeure une forĂȘt Ă Turraeanthus africanus et Heisteria parvifolia.
The disturbance of the environment is at the origin of the destruction of the habitats, it contributes to the loss of the biodiversity and is one of the causes of the change of the flora in a locality. It therefore leads to the transformation of plant associations. The main objective of this study is to research the plant associations in the Banco National Park following village plantations and silvicultural trials due to the search for a methodology specific to African silviculture. To do this, the phytosociological characterization of the former treatment sites and the forest reserve was carried out. The method used is that of synusial phytosociology. The 91 surveys (82 in the former silvicultural treatment sites and 9 in the forest reserve) made it possible to identify 337 species of plants divided into 65 families and 268 genera. The dendrogram resulting from the ascending hierarchical classification of the readings revealed three syntaxa, two of which essentially consist of the readings of the old treatment sites and one of the readings of the forest reserve. No syntaxon contains all the characteristic species of the Turraeantho-Heisterietum association. However, in two syntaxa, the proportion of characteristic species of this association is greater than 50%. 70.59% in the syntaxon to Tarrietia utilis and Cola heterophylla (syntaxon from secondary forests), 52.94% in the syntaxon to Cola chlamydantha and Drypetes chevalieri (syntaxon from the forest reserve). While in the Dacryodes klaineana and Pleiocarpa mutica syntaxon (secondary forest syntaxon), 41% of these characteristic species were recorded. Species characteristic of other forest formations are also poorly represented in the syntaxa (less than 40%). It therefore emerges from this study that Banco National Park remains a forest with Turraeanthus africanus and Heisteria parvifolia
Caracterisation De La Dynamique Dâoccupation Du Sol Et De La Morphologie De La Lagune Aby Dans Lâespace Du Parc National Des Ăles Ehotile ; Sud-Est De La Cote dâIvoire
Les aires protĂ©gĂ©es, qui regorgent la plupart du temps dâimportantes valeurs naturelles et culturelles, subissent dâĂ©normes pressions anthropiques qui fragilisent leur intĂ©gritĂ©. Dans le rĂ©seau des aires protĂ©gĂ©es de CĂŽte d'Ivoire, le Parc national des Ăles EhotilĂ© (PNIE), archipel de six (06) Ăźles, constitue un lieu de forte attraction Ă cause de la beautĂ© de ses paysages. Cependant, malgrĂ© ses atouts naturels et culturels, ce parc est de plus en plus menacĂ© par les pressions anthropiques. Ce travail a pour but dâĂ©tudier la dynamique dâoccupation du sol et lâĂ©volution de la morphologie de la lagune Aby dans lâespace du Parc national des Ăles EhotilĂ©. Le traitement des images satellitaires a montrĂ© une disparition de la forĂȘt de plus de 60% et lâaugmentation des aires de cultures et jachĂšres et des bĂątis de 1989 Ă 2018. La carte bathymĂ©trique de la lagune Aby dans lâespace du PNIE fait apparaĂźtre une morphologie irrĂ©guliĂšre sur lâensemble du secteur Ă©tudiĂ©, avec des hauts fonds par endroits. Les sĂ©diments qui comblent le fond de la lagune sont constituĂ©s de vases, de sables fins et de sables moyens. Les sables prĂ©sents dans les sĂ©diments sont majoritairement fins Ă moyens avec la prĂ©sence de quelques grains grossiers. La morphologie de la lagune marquĂ©e par des hauts fonds et la prĂ©sence importante de vase et de sables fins rĂ©vĂšlent des phĂ©nomĂšnes dâenvasement. La forme arrondie Ă subarrondie des grains de sable et leurs aspects luisants montrent que les sĂ©diments dans lâespace des Ăźles EhotilĂ© ont une origine Ă©loignĂ©e des Ăźles. Ils ont une origine continentale et une origine marine. Protected areas, which often comprises of very important natural and cultural values, are under enormous anthropogenic pressures that undermine their integrity. In the network of protected areas in CĂŽte d'Ivoire, the EhotilĂ© Islands National Park (EINP), an archipelago of six (6) islands, is a place of great attraction because of the beauty of its landscapes. However, despite its natural and cultural assets, this park is increasingly threatened by anthropogenic pressures. This paper focuses on the study of the land use dynamics and morphological evolution of the Aby Lagoon within the EhotilĂ© Islands National Park area. The processing of satellite images has shown that the forest has disappeared by more than 60% and that the areas under cultivation, fallow land, and buildings have increased from 1989 to 2018. The bathymetric map of the Aby Lagoon in the EINP area shows an irregular morphology over the entire study area, with shallow water in some areas. The sediments that fill the bottom of the lagoon are made up of mud, fine sand, and medium sand. The sands present in the sediments are mostly fine to medium sands with some coarse grains. The morphology of the lagoon, marked by shallow waters and the significant presence of mud and fine sands, reveals siltation phenomena. The rounded and sub rounded shape of the grains of sand and their shiny appearance show that the sediments in the space of the EhotilĂ© Islands have an origin far from the islands. In addition, they both have a continental and a marine origin