Secondary Succession Following Slash and Burn Agriculture in North-Eastern India: I. Biomass, Litterfall and Productivity

Toky, O. P.; Ramakrishnan, P. S.

doi:10.2307/2259589

Cited by 106 publications

(35 citation statements)

References 25 publications

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“…Similar cases have been found in other studies of swidden fields, abandoned plantations and pasture (Tabarelli & Mantovani, 1999;Mitche et al, 2000;Oliveira, 2002). Furthermore, Toky & Ramakrishnan (1983) reported that in swidden fallow succession in northeastern India, species diversity increased with fallow age during the first 15-20 years. Relationships between relative abundance of species and stand age differed among species, indicating that species achieved their highest abundance at different times during succession as proposed in the model of succession by Gómez-Pompa & Vázquez-Yanes (1981) and Finegan (1984).…”

Section: Discussionsupporting

confidence: 88%

Species diversity and successional dynamics in the secondary forest of Obafemi Awolowo University Biological Gardens Ile-Ife, Nigeria

Uwalaka¹,

Muoghalu²,

Osewole³

2018

Nat. Cons. Res.

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Forests worldwide are being continuously disturbed by human activities and natural events, and tropical rainforest disturbance is specifically pronounced as indicated by its low biodiversity status. This study examined the floristic composition, species diversity and evenness in seven sample plots (100, 200, 400 and 2500 m 2 ) in a secondary forest of different ages in the Biological Gardens of the Obafemi Awolowo University, Ile-Ife. The aim of this study was to determine changes in these parameters with succession. In each sample plot, all vascular plant species were accounted for and enumerated. The data collected were used to establish the floristic composition, density, diversity and evenness of plant species in the forest. There were 85 woody species (69%), 3 grass species (2%), 13 forb species (11%) and 21 climber species (17%) in the forest. These concern 113 genera and 52 families. The number of woody species in the plots varied with the age of the plots, however, there were no clear trends in the density and diversity of species with plot age. The forest was dominated by early successional species (50%) against the 33% contributed by the late successional species. Also, the youngest plot (Plot I) was dominated by early successional species while the older plots were dominated by a mixture of both early and late successional species. The similarity between plots during succession in the tropical forest was higher between plots of the same age. Also, this study showed that because of the directional pattern of succession, the species that converge to make up the diversity of forest of ages under consideration may be predictive of its recovery.

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Section: Discussionsupporting

confidence: 88%

Species diversity and successional dynamics in the secondary forest of Obafemi Awolowo University Biological Gardens Ile-Ife, Nigeria

Uwalaka¹,

Muoghalu²,

Osewole³

2018

Nat. Cons. Res.

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“…Increased species diversity, reduced species dominance and increased above-ground net primary productivity in a 20-yr-old fallow in comparison with 1-, 10-and 15-yr-old stands [23] Plants TE…”

Section: Appendixmentioning

confidence: 98%

“…In general, succession of pioneer vegetation following suspension of cultivation occurred rapidly in the early stages of regeneration, followed by delayed recovery of woody biomass [10,21,23].…”

Section: Vegetation Recoverymentioning

confidence: 99%

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Forest Recovery Following Shifting Cultivation: An Overview of Existing Research

Teegalapalli

Veeraswami

Samal

2009

Tropical Conservation Science

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Shifting cultivation is a predominant practice in the majority of tropical hilly tracts. Relatively few studies have examined forest recovery following shifting cultivation and we have reviewed these studies to identify and synthesize general recovery patterns. Most studies report that, although pioneer tree species recover relatively faster, woody biomass of mature forest trees recovers several decades after suspension of cultivation. Analysis of bird-species inventories in 10 studies revealed that up to 70% of mature forest birds may recover in successional sites and that species composition is about 55% similar to that in mature forests within 25 years. Results of mammal studies were likely to have been confounded by hunting effects and therefore the effect of time since suspension of cultivation and hunting impacts need to be investigated separately. As shown by a few studies, we conclude that community recovery can be expected to be accelerated when relatively large forest tracts adjoin a shifting cultivation landscape, in comparison with recovery in sites with shorter fallow cycles in the absence of contiguous forests, which act as sources for recolonization of fauna and vegetation.

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“…Many studies were conducted on biomass accumulation in secondary succession of fallow of traditional shifting cultivation area (Nakano, 1978(Nakano, , 1992Ewel et al, 1981;Uhl et al, 1981Uhl et al, , 1982aToky & Ramakrishnan, 1983;Nemoto & Pongskul, 1985;Uhl, 1987;Saulei et al, 1992). Ohtsuka (1999) studied the causes of species replacement of early herbaceous stages of sewndary succession in Northeast Borneo.…”

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confidence: 99%

Biomass Changes in Early Tropical Succession on a Large-scale Shifting Cultivation Area, Northeast Borneo Island.

Ohtsuka¹

2001

Tropics

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Biomass changes in secondary succession on a large-scale shifting cultivation area, northeast Borneo Island were studied. The area around the study sites has been rapidly developed and primary forests were cleared on a large scale. Life form composition rapidly changed in this study sites: i.e., from weedy forb community (four-month and one-year-old), to grassland with sparse canopy trees (three-year-old) and further to forest community (ten-year-old). Pioneer trees (eg. Trema orientalis) reached to 6.5 cm dbh and 4.4 m high in three-year-old, and further to 15.5 cm dbh and 13.0 m high in ten-year-old. Correspond to these rapid successional changes, above-ground biomass linearly increased with age: namely 237 g m-2 (four-month), 650 g m-2 (one-year), 1573 g m-2 (three-year) and to 3463 g m-2 (ten-year). In comparison with the other studies of the biomass accumulation in tropical fallow, biomass increment in the ten-year-old stand was small. The adverse effect on biomass accumulation can probably be ascribed to limit the growth and/or invasion of primary forest tree species due to the severe artificial disturbance around the area. Moreover, the number of pioneer tree species might be low in the study sites, where are transition area from lowland forest to lower montane forest.

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Secondary Succession Following Slash and Burn Agriculture in North-Eastern India: I. Biomass, Litterfall and Productivity

Cited by 106 publications

References 25 publications

Species diversity and successional dynamics in the secondary forest of Obafemi Awolowo University Biological Gardens Ile-Ife, Nigeria

Species diversity and successional dynamics in the secondary forest of Obafemi Awolowo University Biological Gardens Ile-Ife, Nigeria

Forest Recovery Following Shifting Cultivation: An Overview of Existing Research

Biomass Changes in Early Tropical Succession on a Large-scale Shifting Cultivation Area, Northeast Borneo Island.

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