@article{fdi:010081286, title = {{E}stablishment and functioning of the savanna marshes of the {L}ope {N}ational {P}ark in {G}abon since the termination of the {A}frican humid period and the arrival of humans 2500 years ago}, author = {{B}remond, {L}. and {O}slisly, {R}ichard and {S}ebag, {D}avid and {B}entaleb, {I}. and {F}avier, {C}. and {H}enga-{B}otsikabobe, {K}. and {M}voubou, {M}. and {N}gomanda, {A}. and {S}aulieu, {G}eoffroy de and {E}cotrop {T}eam}, editor = {}, language = {{ENG}}, abstract = {{H}olocene paleoecological studies in tropical {A}frica are rare because most lakes either dried out at the termination of the {A}frican {H}umid {P}eriod or have since filled up. {H}owever, tropical sedge marshes can be an alternative to perform long-term ecological studies. {T}he {L}ope {N}ational {P}ark ({LNP}) in {G}abon is a mosaic of forest and savanna enclosed in the equatorial forest, where open areas facilitated the development of peat marshes accumulating several-meter-thick sediment. {I}n order to reconstruct the historical dynamic in these marshes through a local and regional point of view, we compared sedimentological, continuous {X}-ray fluorescence, and stable isotopic analyses on sediment cores from six herbaceous marshes in the {LNP}. {A} reliable chronological frame was based on 50 {C}-14 dates, over the last 2500 years in most sites, and reaching 9000 years in one marsh. {W}e show that the origin of these marshes is a major hydrological change, 3450 and 2300 years ago, that affected the entire region, almost concomitantly with the diffusion of {I}ron {A}ge population. {T}he sedimentation within marshes is homogenous with low intra-site variability. {I}n contrast, high inter-sites variability evidences that the functioning of the marsh itself exerts a much more significant influence than in lakes. {H}owever, a regional event is recorded between 1400 and 800 years ago, concurrently with an archeological trace hiatus throughout the forest hinterland of {W}est {C}entral {A}frica.}, keywords = {{G}abon ; delta {C}-13 ; multi-proxy analysis ; paleoenvironment ; sediments ; tropical marshes ; {XRF} ; {GABON}}, booktitle = {}, journal = {{H}olocene}, volume = {31}, numero = {7}, pages = {1186--1196}, ISSN = {0959-6836}, year = {2021}, DOI = {10.1177/09596836211003230}, URL = {https://www.documentation.ird.fr/hor/fdi:010081286}, }