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Liana Ecology Project
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Diversity, abundance, and conservation status of woody species in a West African dry forest
Article
Yilangai, RM; Onoja, JD; Saha, S; Elisha, EB; Manu, SA; Barshep, Y; Molokwu-Odozi, M
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2023
CONSERVATION SCIENCE AND PRACTICE
5
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This study presents data on woody plant species richness and diversity of an inaccessible dry forest of Tula Mountains Woodland (TMW) located in the northeast of Nigeria. TMW supports a minimally disturbed mosaic of dry forest woodland. We sampled woody species in 190 plots of size 0.01-ha, spaced 50 m apart on series of line transects. We found a total of 133 woody species belonging to 88 genera and 39 families in 1.9 ha area sampled in total. Out of 133 species, 120 were identified to species level, and 113 were recorded as trees, shrubs and lianas with diameter at breast height (dbh) >= 5 cm. Species accumulation curve was non-asymptotic. Fisher's logseries model suggests that the plots sampled in the dry forest communities of TMW are represented by a high number of rare species. Of 120 identified species, 46 (38%) lacked evaluation on conservation status by IUCN. Out of 74 (62%) evaluated species, 2 were listed as critically endangered, 3 were vulnerable, and 69 were of least concern. In the TMW, 27% of woody species were restricted to Sudanian savannah biome, 61% occurred in Sudanian and Zambezian savannah biome. TMW serves as refugia for native plant species and plant communities in northeastern Nigeria.
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