說明
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.
資料紀錄
此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 793 筆紀錄。
亦存在 1 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。
此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。
版本
以下的表格只顯示可公開存取資源的已發布版本。
如何引用
研究者應依照以下指示引用此資源。:
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
權利
研究者應尊重以下權利聲明。:
此資料的發布者及權利單位為 Herbier National du Gabon。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF 註冊
此資源已向GBIF註冊，並指定以下之GBIF UUID: 3eaece88-38a5-4252-9f34-e90b05fdbfba。 Herbier National du Gabon 發佈此資源，並經由Participant Node Managers Committee同意向GBIF註冊成為資料發佈者。
關鍵字
Samplingevent; plants; Gabon; post-logging regeneration
聯絡資訊
- 元數據提供者 ●
- 出處 ●
- 連絡人
- 出處 ●
- 連絡人
- 出處
- 出處
- 出處
- 出處
- 出處
- 連絡人
- 發布者
地理涵蓋範圍
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.
| 界定座標範圍 | 緯度南界 經度西界 [-4.171, 8.833], 緯度北界 經度東界 [2.416, 14.81] |
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分類群涵蓋範圍
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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時間涵蓋範圍
| 起始日期 / 結束日期 | 2018-06-02 / 2020-09-02 |
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計畫資料
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.
| 計畫名稱 | Mobilization and use of botanical data as decision-making tools in Gabon |
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| 辨識碼 | BID-AF2020-194-USE |
| 經費來源 | JRS Biodiversity Foundation GBIF |
參與計畫的人員:
- 發布者
取樣方法
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.
| 研究範圍 | 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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| 品質控管 | 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. |
方法步驟描述:
- 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.
引用文獻
- 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
額外的詮釋資料
| 替代的識別碼 | 3eaece88-38a5-4252-9f34-e90b05fdbfba |
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| https://ipt-gabon.gbif.fr/resource?r=regefor |