Description
This is the extracted data of the post-logging regeneration of commercial species in forest concessions under sustainable management (FSCM) in Gabon project funded by Sud Expert Plantes Développement Durable program (SEP2D) under the AAP2-81 project code. The main aim of this project was to support logging companies involved in the certification process to monitor forest regeneration relating to Forest Stewardship for the Congo Basin Region (FSC) which recommends the forest manager to set up mechanisms to monitor natural regeneration in the areas impacted by logging according to 6.3.2 indicator. Study was carried in the certified FSCM of the Rougier-Gabon company by the Institut de Recherche en Ecologie Tropicale (IRET). To monitor forest dynamic and trees regeneration of the forest areas impacted by logging, data from 652 plots of 30 m2 established on the skid trails and the 141 others from felling gaps whose sizes vary between 3,8 to 20 m2 was exploited. Skid trails are used for log extraction. Every tree ≥ 1 cm in diameter at breast height (dbh; 1.3 m above ground level) was measured.
Enregistrements de données
Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 793 enregistrements.
1 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Engone Obiang N L, Mboma R, Mba Nzuè M, Niangadouma R, Menvi Nzomo J, Magama-Mucketou A, Chézeaux É (2023): Forest dynamic and trees regeneration in the logging gaps in Gabon. v1.6. Herbier National du Gabon. Dataset/Samplingevent. https://ipt-gabon.gbif.fr/resource?r=regefor&v=1.6
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Herbier National du Gabon. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : 3eaece88-38a5-4252-9f34-e90b05fdbfba. Herbier National du Gabon publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Participant Node Managers Committee.
Mots-clé
Samplingevent; plants; Gabon; post-logging regeneration
Contacts
- Fournisseur Des Métadonnées ●
- Créateur ●
- Personne De Contact
- Researcher
- Créateur ●
- Personne De Contact
- Researcher
- 243 Avenue Félix Houphouët Boigny BP 13354
- Créateur
- Technicien superieur
- Créateur
- Technicien
- Créateur
- Technicien
- Créateur
- Forestier
- Créateur
- Forestier
- Personne De Contact
- Researcher
- Publicateur
- Directeur adjoint
Couverture géographique
Study was carried out in the certified forest concessions of Rougier-Gabon, especially those of Haut-Abanga, in the northwest (293,833 ha) and Moyabi (188,989 ha), in the southeast of Gabon.
Enveloppe géographique | Sud Ouest [-4,171, 8,833], Nord Est [2,416, 14,81] |
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Couverture taxonomique
These data that come from 793 plots contain 6251 trees including 276 species, 184 genera and 56 families. The both logging gaps are characterized by the similar floristic compositions where the light-demanding taxa as Macaranga, Alcornea, Xylopia, Discoglypremna, Dichostemma and Harungana are more abundants.
Family | Apocynaceae, Aptandraceae, Asteraceae, Burseraceae, Cannabaceae, Cardiopteridaceae, Centroplacaceae, Chrysobalanaceae, Clusiaceae, Connaraceae, Coulaceae, Dipterocarpaceae, Ebenaceae, Erythroxylaceae, Euphorbiaceae, Fabaceae, Gelsemiaceae, Gentianaceae, Huaceae, Hypericaceae, Irvingiaceae, Ixonanthaceae, Lamiaceae, Lauraceae, Lecythidaceae, Malvaceae, Melastomataceae, Meliaceae, Moraceae, Myristicaceae, Myrtaceae, Ochnaceae, Olacaceae, Pandaceae, Passifloraceae, Peraceae, Phyllanthaceae, Polygalaceae, Putranjivaceae, Rhamnaceae, Rhizophoraceae, Rubiaceae, Rutaceae, Salicaceae, Sapindaceae, Sapotaceae, Simaroubaceae, Stemonuraceae, Strombosiaceae, Thomandersiaceae, Urticaceae, Violaceae, Vochysiaceae |
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Couverture temporelle
Date de début / Date de fin | 2018-06-02 / 2020-09-02 |
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Données sur le projet
Specifically, this project aims to fill data gaps through Digitalization of herbarium specimens at the National Herbarium of Gabon (LBV). The images of the scanned specimens will be linked and available online in a database that has already been developed during the previous project. We plan to scan about 2000 herbarium specimens. Categorization of medicinal, cosmetic, endemic and threatened plants using an existing database created during the a previous BID project. Further categorization will improve the database and will greatly accelerate their utilization. Habitat modeling of commercial timber species for their sustainable management in Gabon. This activity will concern the main commercial timber and threatened species. Appropriate communication tools about data to decision-makers such as the production of online checklists of medicinal, endemic and cosmetic plants, and writing policy briefs for policy-makers.
Titre | Mobilization and use of botanical data as decision-making tools in Gabon |
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Identifiant | BID-AF2020-194-USE |
Financement | JRS Biodiversity Foundation GBIF |
Les personnes impliquées dans le projet:
- Publicateur
Méthodes d'échantillonnage
To collect data, 652 plots was established on the skid trails and the 141 others in the felling gaps of the two forest concessions, either a total of 793 plots.
Etendue de l'étude | Study was carried in two FSCM of the Rougier-Gabon company, that of Haut-Abanga (288,626 ha), in the northwest and the Moyabi one, in the southeast of Gabon (71,716 ha). Rougier-Gabon was also a project partner. |
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Contrôle qualité | GBIF species matching and BRAHMS database was used for data quality control. After species identification in the field their confirmation was done by the Herbier national du Gabon botanists. |
Description des étapes de la méthode:
- In the two FSCM of the Rougier-Gabon company, data come from 652 plots of 30 m2 in the skid trails and the 141 others whose size varies from 3.38 to 20 m2 from felling gaps. The skid trails and the felling gaps are themselves located in the annual areas cutting from 0 to 26 years old. The plots, 100 m apart from center to center, was placed along the skid trails and numbered from 1 to n; 1 being the first plot, adjacent to the road or park and n le last one, inside the forest. The plots of the felling gaps of the same area (20 m2) were successively placed in the axis which connects the stump to the crown. They were also numbered from 1 (first plot after the stump) to n, last plot of variable size X. In the two cases, every tree ≥ 1 cm in diameter at breast height (dbh; 1.3 m above ground level) was measured.
Citations bibliographiques
- Brunck, F., Grison, F., & Maitre, H. F. (1990). Okoume (Aucoumea klaineana): a monograph. Okoume (Aucoumea klaineana): a monograph.
- Engone Obiang N.L., Ngomanda A., Hymas O., Chézeaux É. & Picard N. 2014. Diagnosing the demographic balance of two light-demanding tree species populations in central Africa from their diameter distribution. Forest Ecology and Management 313: 55–62.
- Engone Obiang Nestor, Mba Nzuè Martial-T et Niangadouma Raoul – 2019 : Régénération post exploitation des essences commerciales dans les concessions forestières sous aménagement durable au Gabon. Rapport final du projet Sud Expert Plante AAP2-81
- Gravel, D., Canham, C. D., Beaudet, M., & Messier, C. (2010). Shade tolerance, canopy gaps and mechanisms of coexistence of forest trees. Oikos, 119(3), 475-484.
- Poorter, L., & Rose, S. A. (2005). Light-dependent changes in the relationship between seed mass and seedling traits: a meta-analysis for rain forest tree species. Oecologia, 142(3), 378-387. Rougier Gabon, Plan d’aménagement des CAD du Haut Abanga et de Moyabi
Métadonnées additionnelles
Identifiants alternatifs | 3eaece88-38a5-4252-9f34-e90b05fdbfba |
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https://ipt-gabon.gbif.fr/resource?r=regefor |