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Titre : |
The footprint left by pre-Columbian Amerindians on vegetation: Analysis of the floristic composition of tree communities in French Guiana
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Auteur(s) : |
Clara DOGNY PIETTE, Auteur
Jean-François Molino, Responsable de stage Guillaume Odonne, Responsable de stage Université de Guyane, Organisme de soutenance |
Type de document : | Mémoire |
Filière : | M. : EFT -- Ecologie des Forêts Tropicales |
Sujets : | Écologie -- Histoire -- Sources ; Civilisation précolombienne Écologie forestière ; Évaluation impact sur environnement |
Résumé : |
This study in historical ecology explores the impact of pre-Columbian Amerindian societies on the current forest ecosystems of French Guiana, situated within the Guayana Shield. Utilizing data from 155 plots, we identify 7 indicator species of pre-Columbian human activities, which are more abundant in the southern part of French Guiana. The findings suggest that pre-Columbian human activities have left significant traces on the present-dayfloristic composition, characterized by an enrichment of food species and a reduction intimber-yielding species in anthropized areas. Untangling the effects of human activities from environmental influences remains a challenge, requiring interdisciplinary studies. The utilization of the anthropization index emerges as a valuable tool for predicting p[...]
This study in historical ecology explores the impact of pre-Columbian Amerindian societies on the current forest ecosystems of French Guiana, situated within the Guayana Shield. Utilizing data from 155 plots, we identify 7 indicator species of pre-Columbian human activities, which are more abundant in the southern part of French Guiana. The findings suggest that pre-Columbian human activities have left significant traces on the present-dayfloristic composition, characterized by an enrichment of food species and a reduction intimber-yielding species in anthropized areas. Untangling the effects of human activities from environmental influences remains a challenge, requiring interdisciplinary studies. The utilization of the anthropization index emerges as a valuable tool for predicting potentially anthropized sites, facilitating the planning of targeted research endeavors such as LIDAR surveys and archaeological excavations. Additionally, the results of the Inverse DistanceWeighting (IDW) analysis reveal a distinct North-South separation in the relative abundanceof the 7 indicator species. Exploring past ecological systems in French Guiana enhances our understanding of Amazonian forests and deepens our comprehension of the connectionsbetween societies and their natural environments. This study underscores the increasing significance of historical ecology in unraveling the intertwined influences of humans and the environment in shaping current ecosystems. It highlights the vital role of historical ecologicalresearch not only in conservation and sustainable management of ecosystems but also inexpanding our insights into the interplay between societies and their surroundings.
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Date de publication : | 2023 |
Format : | 45 p. / carte coul., graph. coul. |
Langue(s) : | Anglais |
Lien vers la notice : | https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=222633 |
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