Species composition, diversity and distribution in a disturbed Takamanda Rainforest, South West, Cameroon

Rol, Njoh; Ndah,; Enow, Egbe; rew,; Bechem, Eneke Esoeyang Tambe

doi:10.5897/ajps2013.1107

Cited by 20 publications

(13 citation statements)

References 18 publications

(10 reference statements)

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“…The dominance value (Ds) recorded in present study (0.93) corresponds well with that recorded from other temperate forests, which ranged from 0.135-0.97 (Saha et al 2016;Ndah et al 2013). The Pielou evenness index (e) recorded from the present study (0.92) revealed that there is an even distribution of species within the forest.…”

Section: Floristic Diversity and Compositionsupporting

confidence: 87%

“…In the present study, tree species diversity (H') in Fakim Wildlife Sanctuary was 3.90, which can be considered as high for temperate and tropical forests. For example, species diversity reported from mixed forest of Batuputih Nature Tourism Park, Indonesia was 3.31 (Arrijani and Rizki 2020), Takamanda rainforest in Southwest Cameroon was 3.87 (Ndah et al 2013) and temperate forest of Rudraprayag district of Garhwal Himalaya was 3.45 (Raturi 2012). The variation in species diversity with respect to environmental gradient acts as a major ecological investigation (Deb et al 2015;Erenso et al 2014;Gairola et al 2008), and various factors, such as climate, habitat, biotic interaction, edaphic, physiography, and productivity of the forest, play a major role in determining the species growth and production (Monson 2014;.…”

Section: Floristic Diversity and Compositionmentioning

confidence: 99%

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Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India

Ao¹,

Changkija²,

Tripathi³

2020

Biodiversitas

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Abstract. Ao A, Changkija S, Tripathi SK. 2020. Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India. Biodiversitas 21: 2777-2785. The plant species composition and diversity represent the overall health of the forest ecosystems and provide useful insight on forest conservation, and the species regeneration is important in assessing the potential of the forests to serve the society on sustained basis. This present study aimed to assess the species diversity, population structure, and regeneration status of the trees in temperate forest of Fakim Wildlife Sanctuary, Nagaland, Northeast India. Tree species composition, population structure and regeneration status were analyzed by randomly establishing eight plots of 0.1 ha within the sanctuary. Density, basal area, abundance, evenness, and other diversity indices were calculated for mature trees with girth at breast height (GBH) ≥ 30 cm. A total of 60 tree species belonging to 40 genera and 27 families were recorded. The most dominant families recorded were Lauraceae and Rosaceae. The total tree density recorded from the forest was 432.5 individuals ha-1 with a basal area 42.8 m2 ha-1. Cinnamomum zeylanicum and Lithocarpus pachyphyllus had the highest density with 17.58 individuals ha-1 and Lithocarpus pachyphyllus had the highest basal area with 2.64 m2 ha-1. The species with the highest IVI was Betula alnoides (17.13). Girth class of 30-60 cm had the highest density and basal area with 280 individuals ha-1 and 20.7 m2 ha-1. The diversity indices such as Shannon-Wiener index, Simpson index, Pielou evenness index, and Margalef species richness index were 3.90, 0.93, 0.92, and 11.59, respectively in the wildlife sanctuary. The present study showed that 41% of tree species exhibited good regeneration status, 31% as fair regeneration, 8% as poor regeneration and 20% had no regeneration. The present data will be useful to understand the current status of tree species and will serve as baseline information to the forest department, policymakers and conservationists to develop management plans for the conservation of priority species in the area.

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Section: Floristic Diversity and Compositionsupporting

confidence: 87%

Section: Floristic Diversity and Compositionmentioning

confidence: 99%

Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India

Ao¹,

Changkija²,

Tripathi³

2020

Biodiversitas

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“…The implication of this result is that, even though KNP got its legal status as a PA, its floral diversity degraded over time as a result of anthropogenic disturbances. The disturbance is possibly attributed to the exclusion of the local people from exercising their traditional rights (Nath et al, 2000) Bangladesh* 2.60 (Gopalakrishna, Kaonga, Somashekar, Suresh, & Suresh, 2015) India 1.99 (Panda, Mahapatra, Acharya, & Debata, 2013) India 2.94 (Thakur & Khare, 2006) India 2.28 (Parthasarathy & Sethi, 1997) India 3.58 (Tripathi et al, 2004) India 3.50 (Velho & Krishnadas, 2011) India 2.50 (Parthasarathy & Karthikeyan, 1997) India 4.27 (Kumar, Marcot, & Saxena, 2006) India 2.02 (Bhuyan, Khan, & Tripathi, 2003) India 2.41 (Aye, Pampasit, Umponstira, Thanacharoenchanaphas, & Sasaki, 2014) Myanmar 1.34 (Mishra & Garkoti, 2016) Nepal 5.61 (Hayat, Kudus, Faridah-Hanum, Noor, & Nazre, 2010) Malaysia 3.87 (Ndah, Andrew, & Bechem, 2013) Cameroon 2.91 (Nangendo, Stein, Gelens, De Gier, & Albricht, 2002) Uganda Evenness index 0.75-0.83 0.88 (Tripathi et al, 2004) India 0.60 (Gopalakrishna et al, 2015) India 0.99 (Panda et al, 2013) India 0.87 (Velho & Krishnadas, 2011) India 0.46 (Bhuyan et al, 2003) India 0.22 (Hayat et al, 2010) Malaysia 0.90 (Ndah et al, 2013) Cameroon Simpson index 0.10-0.20 0.06 (Tripathi et al, 2004) India 0.90 (Gopalakrishna et al, 2015) India 0.02 (Panda et al, 2013) India 0.06 (Bhuyan et al, 2003) India 0.84 (Aye et al, 2014) Myanmar 0.52 (Mishra & Garkoti, 2016) Nepal 0.15 (Hayat et al, 2010) Malaysia 0.03 (Ndah et al, 2013) Cameroon…”

Section: Importance Value Index (Ivi)mentioning

confidence: 99%

The competitiveness of the phytosociological attributes of the protected areas in Bangladesh with that in the other tropical countries

Rahman

Mahmud

Shahidullah

et al. 2016

Journal of Sustainable Forestry

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Many forest reserves in Bangladesh have been converted to protected areas (PAs) to conserve the forests resources from further depletion. This study has investigated if such initiatives have improved the state of biodiversity of these PAs amid tremendous anthropogenic pressure on forest resources. We have assessed the phytosociological attributes of the PAs in the country through a case study at Kaptai National Park (KNP) and compared the attributes with those of the adjacent areas and of the tropical forests across the world. We have identified 52 species belonging to 45 genera and 28 families. The most dominant species in KNP was Dipterocarpus spp. and the adjacent area was dominated by Tectona grandis. Unexpectedly, the Shannon-Wiener index of KNP has dropped down from 2.98 in 2000 to 0.90 in 2014. However, in terms of relative density, relative dominance, and relative frequency, KNP was better than the adjacent areas. In contrast, the mean Shannon-Wiener index in KNP (0.90) was smaller than that in the tropical countries (2.99). We recommend strengthening effective comanagement of PAs and enabling nonforestry income generation activities for the forestdependent people so that the biodiversity of the PAs can be enriched while people's livelihoods are ensured.

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“…Though its mean species richness is far below other forest ecosystems both in Africa and across the Amazonia (Gentry, 1988;Phillips & Gentry, 1994;Richards, 1996;Ndah et al, 2013), it is similar with other freshwater swamp forests which are taken to be species poor as well (Scarano et al, 1997;Kurtz et al, 2013). While this could be generally attributed to the variations that exist in their abiotic environment, history and biogeography (Orians et al, 1996), it is equally as a result of the environmental constraints associated with the ecosystem.…”

Section: Discussionmentioning

confidence: 99%

Species Diversity and Structure of an Intact Freshwater Swamp Forest in the Niger Delta

Igu¹

2017

OJF

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Tropical forest ecosystems are generally seen as diverse ecosystems with rich biodiversity. However, how this applies to the freshwater swamp forests (especially in West Africa) is largely unknown. To verify how diverse this ecosystem is and how its structure varies in an intact forest landscape, one hectare forest plots were set up at 8 different points. This was used to collect information on the diversity and structure of the ecosystem. Consistent with the findings from other freshwater swamp forests, the ecosystem was seen to have a low species occurrence which ranged from 4 to 19 (mean value = 11 species) across the forest plots. Its diversity was equally low (mean = 1.66), unlike other tropical forest ecosystems. Stem heights varied as in mature tropical forest ecosystems; with the middle stratum recording the highest proportion of trees (54.63%) and the emergent layer having the least (0.83%). Its basal area, biomass and relative density were similar with other tropical ecosystems and equally had its highest species contribution from Leguminosae as in some other ecosystems as well. The ecosystem was seen to have features and characteristics that were common and similar with other tropical forest ecosystems, apart from its low diversity. Ensuring that effective and appropriate forest-tree species conservation measures are enhanced across the landscape are vital steps to securing the already existing (few) species and preventing species extinction across the ecosystem.

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Species composition, diversity and distribution in a disturbed Takamanda Rainforest, South West, Cameroon

Cited by 20 publications

References 18 publications

Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India

Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India

The competitiveness of the phytosociological attributes of the protected areas in Bangladesh with that in the other tropical countries

Species Diversity and Structure of an Intact Freshwater Swamp Forest in the Niger Delta

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