Tropical forests, which cover less than 10% of the Earth’s total land area, are hosting 50–90% of the known terrestrial plant and animal species, and forest biodiversity underpins most of the forest ecosystem services (FAO 2010; Seppala et al. 2009; MEA 2005). They are the world’s richest biological communities and these forests have been recognized to harbor a significant percentage of the global biodiversity (Baraloto et al. 2013; Myers et al. 2000) and also provide livelihood systems and wood to about 1.6 billion people (FAO 2010; World Bank 2004). These forests provide many ecosystem services such as species conservation, soil erosion prevention, and plants and animals habitat preservation (Armenteras et al. 2009).
According to the mapping carried out on satellite imagery data from the 2013 National Forest Inventory (IFN), forest cover in Togo represents 24.24% of the country’s total area (MERF, 2016). This forest cover consists mainly of dense forests, riparian forests, open forests, dense woodlands and forest relics. Changes in land use have led to the vulnerability of the country’s forest ecosystems, whose area is decreasing significantly each year, in favour of savannas and farmland (MERF, 2018).
Overexploitation has brought about the rapid loss of forests and is recognized as one of the world’s greatest environmental and economic challenges (Mani and Parthasarathy, 2006). Tropical forests are disappearing at an alarming rates worldwide, reducing their current area by 1–4% each year (Laurance, 1999). The relative increase in anthropogenic pressures has led to the expansion of agriculture and overgrazing of livestock (Anitha et al. 2010).
In fact, between 1975 and 2010, Togo’s forests have lost nearly 33% of their land area (USGS EROS, 2013) and Togo is among the countries with the highest net loss as a percentage of forests (FAO, 2011). These growing deforestation and degradation phenomena limit the ability of forest ecosystems to provide their vital goods and services to the population. In order to conserve biological diversity, Togo has, since the colonial period, established a vast network of protected areas, including national parks, classified forests and wildlife reserves. This network of 83 protected areas is estimated at about 14% of the national territory (UICN, 2010; Wala, 2004).
Thus, habitats protection and restoration, which improves biodiversity and productivity, could directly benefit communities dependent on these forest resources (Reddy & Ugle 2008; Heywood 1995). But in 1990, as a result of socio-political unrest, these protected areas suffered a major degradation resulting in flooding, overgrazing, illegal and excessive resources exploitation of these protected areas. To reverse the trend, the Government has adopted in 2003 a standard protected area management framework aimed at restoring and securing about 10.21% of the national territory (MERF, 2008). Identified as a priority protected area and to strengthen its management, Djamde wildlife reserve was granted to TOGO-FAUNE, for 99 years.
It is in the context of this lease that the company named TOGO-FAUNE, with technical assistance of the Ministry of the Environment and Forestry Resources (MERF) commissioned studies, including the forestry inventory of Djamde reserve, for the drafting of its management plan.
The dataset used in this data paper carry out tree inventory obtained from a survey plan drawn from the cartographic databases. On a mesh, plots were made to cover various vegetation of the reserve. The dataset was developed to 1) show Djamde Wildlife Reserve importance in term of biodiversity conservation in Togo, 2) promote public-private partnership in protected areas management, and 3) launch a fundraising for the development and management plan for this protected area.
Collection of the data in the field was funded by TOGO-FAUNE with technical support of the Forestry Resources Office (DRF). Indeed, since the concession of the reserve management to a private company, many achievements have been made in terms of management. Among others, let’s mention:
Implementation of this project is scheduled to run for ten years (2014–2023), with an estimated budget of 750K€.
Djamde Reserve is located in the narrowing zone of Atakora Chain. There are two mountain ranges: Djamde Mountains whose highest point called Kéléza, has an altitude of about 670 m, and Bounoh-bou mountain range. It belongs to the structural unit of the Atakora with dominant muscovite quartzites, quartzose micaschists and chloritic schists. There are little evolved soils with gravelly or stony horizons, stones and boulders. It is crossed by the medium-size Rivers namely Klikpèn and Lamboua.
According to the ecofloristic distribution proposed by Ern (1979), Djamde Wildlife Reserve is localized in Togo Ecological Zone II (Figure 1) which is typified by a mosaic of dry forests of mountain and forest galleries. The climate is Sudano-Guinean. It is targeting by one rainy season (April–October) and one dry season (October–March). The rainy season is characterized by the Harmattan that is a dry and cold wind. Rainfall is irregular and reaches 1200–1300 mm of water per year. The soils are thin and contain a high proportion of coarse elements. Ferruginous tropical soils are also present.
Design description: Based on the reserve’s potential and constraints, the management plan aims to ensure the sustainable management of its resources; particularly wildlife resources, through their valorization and efficient monitoring with a view to ensuring the harmonious development of local communities. Specifically, it’s about: (i) strengthen the organizational and institutional backbone of the reserve’s management, (ii) consolidate the monitoring system for biological resources, (iii) develop tourism, hunting sport and alternative socioeconomics activities, that are both sustainable and beneficial to local people; with minimal environmental impact on the resources; iv) promote research and ecological monitoring system.
The dataset is published through http://ipt-togo.gbif.fr/resource?r=reserve_djamde# under the Licences: Creative Commons Attribution (CC-BY) 4.0 License.
The dataset described in this paper was collected from May 2014 and May 2018. A sampling scheme was developed for Djamde Wildlife Reserve from cartographic holdings. A square mesh was created using Arcview 3.2 software. Vegetation stratification was carried out in order to identify the main plant assemblages on the basis of the national classification updated by the nomenclature of land uses and typologies of plant assemblages (MERF 2016). This mesh made it possible to place the random transects equidistant by 2 km in order to cover the whole study area. Data collection sheets were manually undressed and the raw data are then compiled using Excel software. Frequency calculations of species number per family were made on the basis of data compiled through analysis of pivot tables in Excel.
Floristic inventory was carried out according to the phytosociological stigmatism method of Braun-Blanquet (1932) used in many phytosociological studies in the West African subregion (Dourma 2008; Wala 2004; Kokou, 1998, Sinsin 1993, Akpagana 1989). Sixty (60) survey plots were installed along 10 transects, and positioned on these transects taking into account the different layers and the existing pathways in the reserve. The size of each plot is 30 m * 30 m and 50 m × 5 m along the streams. All plant species present in each plot were noted and assigned an abundance-dominance coefficient according to the Braun Blanquet scale (1932), to identify the characteristic and therefore dominant species of plant communities and, to determine the spatial distribution of the communities studied. (+: rare species, recovery of 0–1%, 1 = recovery of 1–5%, 2 = recovery of 5–25%, 3 = recovery of 25–50%, 4 = recovery of 50–75%; = recovery from 75–100%).
Dataset described was updated to match APG classification of angiosperm families (APGIII, 2009). Identification, spelling and authorship of collected species was checked using Togo (Brunel et al. 1984) and Benin (Akoègninou et al. 2006) flora and confirmed against online databases (www.ipni.org; http://www.theplantlist.org/, http://www.ville-ge.ch/musinfo/bd/cjb/africa/recherche.php).
IUCN status of each species was obtained using www.iucnredlist.org.
Description: Djamde Wildlife Reserve is located in the Kozah prefecture (Kara region in northern Togo) (Figure 1), between 9°31’ and 9°35’ north latitude and 1°01’ and 1°05’ longitude East. The area of this faunal Reserve is characterized by a Sudano-Guinean climate, marked by two distinct seasons: a dry one from November to April with high temperatures reaching 38–40°C between March and a rainy season from April to October, with maximum rainfall in August and September. The average annual rainfall is around 1,300 mm and the average temperature is 26°C (Atsri, 2013; Atutonu, 2013).
Coordinates: 9°26’31.2’’N and 9°34’51.6’’N Latitude; 1°1’30’’E and 1°6’28.8’’E Longitude, Altitude 520 m.
Four plant patterns have been identified with the following characteristics:
Harvested woody plants have been identified up to species level and IUCN status.
The dataset contains 126 woody species belonging to 34 families (Figure 2) and 94 genera, according to APG III classification (2009). The most represented families in terms of species are: Fabaceae (29), Combretaceae (12), Rubiaceae (11), Moraceae (9), Verbenaceae and Anacardiaceae (5). Alphabetically, others are: Arecaceae (only one Commelinids), Annonaceae, Apiaceae, Apocynaceae, Araliaceae, Bignoniaceae, Bixaceae, Celastraceae, Chrysobalanaceae, Combretaceae, Connaraceae, Dipterocarpaceae, Ebenaceae, Euphorbiaceae, Hypericaceae, Loganiaceae, Malvaceae, Meliaceae, Myrtaceae, Ochnaceae, Olacaceae, Oleaceae, Proteaceae, Salicaceae, Sapindaceae, Sapotaceae, Simaroubaceae, Thymeleaceae, Ulmaceae, Vitaceae.
Dominant genera are Ficus (7 species), Combretum (5) and Terminalia (4).
According to the IUCN Red List, 11 (8.73%) of the listed species have an extinction risk status (Figure 3). In detail, these are 4 vulnerable species (Khaya senegalensis, Pouteria alnifolia, Afzelia africana and Albizzia ferruginea), 1 near threatened species (Milicia excelsa) and 5 species of minor concern (Acacia hockii, Detarium microcarpum, Dichrostachys cinerea, Pterocarpus santalinoides, Isoberlinia doka).
The dataset used in this paper is collected with the financial support of TOGO-FAUNE Company. Their formatting, cleaning and publishing have been carried out thanks to European Union funding through the BID (Biodiversity Information for Development) project under GBIF (Global Biodiversity Information Facility) supervision in Copenhagen.
The authors have no competing interests to declare.
Angiosperm Phylogeny Group. 2009. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. Botanical Journal of the Linnean Society, 161(2): 105–121. DOI: https://doi.org/10.1111/j.1095-8339.2009.00996.x
Anitha, K, Joseph, S, Chandran, RJ, Ramasamy, EV and Prasad, SN. 2010. Tree species diversity and community composition in a human-dominated tropical forest of Western Ghats biodiversity hotspot, India. Ecological Complexity, 7: 217–224. DOI: https://doi.org/10.1016/j.ecocom.2010.02.005
Armenteras, D, Rodriguez, N and Retana, J. 2009. Are conservation strategies effective in avoiding the deforestation of the Colombian Guyana Shield? Biological Conservation, 42: 1411–1419. DOI: https://doi.org/10.1016/j.biocon.2009.02.002
Baraloto, C, Molto, Q, Rabaud, S, Hérault, B, Valencia, R, Blanc, L, Fine, PVA and Thompson, J. 2013. Rapid simultaneous estimation of above ground biomass and tree diversity across Neotropical forests: a comparison of field inventory methods. Bitropica, 45: 288–298. DOI: DOI: https://doi.org/10.1111/btp.12006
Laurance, WF. 1999. Reflections on the tropical deforestation crisis. Biological Conservation, 91: 109–118. DOI: https://doi.org/10.1016/S0006-3207(99)00088-9
Myers, N, Mittermeier, RA, Mittermeier, CG, da Fonseca, GAB and Kent, J. 2000. Biodiversity hotspots for conservation priorities. Nature, 403: 853–858. DOI: https://doi.org/10.1038/35002501
Seppala, R, Buck, A and Katila, P. 2009. Executive summary and key message: Adaptation of forests and people to climate change: A global assessment report. IUFRO World Series 22. International Union of Forest Research Organizations, Vienna.