Distribution and ecology of vascular plants in a tropical rain forest

Hall, John B.; Swaine, Michael

doi:10.1007/978-94-009-8650-3

Cited by 404 publications

(338 citation statements)

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“…Although African mahogany species are widely distributed across tropical Africa, their local abundance can be influenced by climate (rainfall), soil conditions (moisture and nutrients), historic events, and disturbances (Bongers et al 1999). Most African mahoganies have been described as belonging to the deciduous or semi-deciduous forests (Hall and Swaine 1981). The relatively drier and semi-deciduous forests of the eastern fringe of the Ituri basin probably offer more favorable conditions for the regeneration and growth of African mahoganies than the evergreen forests of Epulu.…”

Section: Forest Disturbance and The Regeneration Of Major Timber Treesmentioning

confidence: 99%

Impacts of Selective Logging and Agricultural Clearing on Forest Structure, Floristic Composition and Diversity, and Timber Tree Regeneration in the Ituri Forest, Democratic Republic of Congo

Makana

Thomas

2006

Biodivers Conserv

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Abstract. Mature tropical forests at agricultural frontiers are of global conservation concern as the leading edge of global deforestation. In the Ituri Forest of DRC, as in other tropical forest areas, road creation associated with selective logging results in spontaneous human colonization, leading to the clearing of mature forest for agricultural purposes. Following 1-3 years of cultivation, farmlands are left fallow for periods that may exceed 20 years, resulting in extensive secondary forest areas impacted by both selective logging and swidden agriculture. In this study, we assessed forest structure, tree species composition and diversity and the regeneration of timber trees in secondary forest stands (5-10 and ~40 years old), selectively logged forest stands, and undisturbed forests at two sites in the Ituri region. Stem density was lower in old secondary forests (~40 years old) than in either young secondary or mature forests. Overall tree diversity did not significantly differ between forest types, but the diversity of trees >10 cm dbh was substantially lower in young secondary forest stands than in old secondary or mature forests. The species composition of secondary forests differed from that of mature forests, with the dominant Caesalpinoid legume species of mature forests poorly represented in secondary forests. However, in spite of prior logging, the regeneration of high value timber trees such as African mahoganies (Khaya anthotheca and Entandrophragma spp.) was at least 10 times greater in young secondary forests than in mature forests. We argue that, if properly managed and protected, secondary forests, even those impacted by both selective logging and small-scale shifting agriculture, may have high potential conservation and economic value.

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Section: Forest Disturbance and The Regeneration Of Major Timber Treesmentioning

confidence: 99%

Impacts of Selective Logging and Agricultural Clearing on Forest Structure, Floristic Composition and Diversity, and Timber Tree Regeneration in the Ituri Forest, Democratic Republic of Congo

Makana

Thomas

2006

Biodivers Conserv

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“…Other non-emergent tree species with high abundances are Chidloweia sanguinea (Caesalpiniaceae), Corynanthe pachyceras (Rubiaceae) and Coula edulis (Olacaceae). Nomenclature follows Hall & Swaine ( 1981 ). The species composition of the forest in the Park ranges from moist semi-deciduous to wet evergreen (sensu Hall & Swaine 1981).…”

Section: Study Sitesmentioning

confidence: 99%

“…Nomenclature follows Hall & Swaine ( 1981 ). The species composition of the forest in the Park ranges from moist semi-deciduous to wet evergreen (sensu Hall & Swaine 1981).…”

Section: Study Sitesmentioning

confidence: 99%

Spatial distribution of gaps along three catenas in the moist forest of Taï National Park, Ivory Coast

et al. 1994

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.Cambridge University Press is collaborating with JSTOR to digitize, preserve and extend access to Journal of Tropical Ecology.http://www.jstor.org ABSTRACT. The spatial distribution of canopy gaps was analysed on three sites (total 71 ha) in the tropical moist forest of TaY National Park, Ivory Coast. Pattern analysis revealed a clustered distribution of gaps for two of the three sites. Catena dependent gap formation processes might explain local differences in the occurrence and distribution of gaps. Gap densities, sizes and percentage forest area in gap phase are higher on the upper and middle slope than on the crest or lower slope. As a consequence, regeneration of gap dependent tree species might be directed to the catena positions with the highest disturbance regime. The spatial distribution of gap dependent species can be clumped, not only due to the regeneration within gaps, but also due to the clustered nature of gap distribution on its own.

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“…Forest ochrosols are predominant and have developed from highly weathered parent materials under reduced amounts of rainfall. Unlike the forest oxysols which are highly leached, yellowish, very acidic, and nutrient poor, the forest ochrosols are less leached, reddish, slightly acid to neutral, and better suppled with nutrients (Hall and Swaine, 1981).…”

Section: Rural Ecology and Economic Productionmentioning

confidence: 92%

“…Temperature variation is slight. The mean monthly maximum temperature in the hottest months (February-March) is 31°-33°C while the mean monthly minimum in the coldest months (December-January and August) is between 19°-22°C (Hall and Swaine, 1981). The changes in climatic conditions are part of the long-term consequences of the on-going deforestation in the whole region.…”

Section: Rural Ecology and Economic Productionmentioning

confidence: 98%

A forest beyond the trees: Tree cutting in rural Ghana

Dei

1992

Hum Ecol

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This paper examines the complexity of human forces involved in the processes of tree cutting in a Ghanaian forest region. It provides evidence to link the indiscriminate tree cutting activities in some local communities to the gradual loss of communal control over land and the replacement of kin group control with state property regimes. The author points to the interrelated factors of the state's promotion of an export-led development strategy and the intensification of agricultural commercialization, as well as household and group differential and unequal access to land as all having a deleterious impact on local traditions of sustainable forestry.

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Distribution and ecology of vascular plants in a tropical rain forest

Cited by 404 publications

References 0 publications

Impacts of Selective Logging and Agricultural Clearing on Forest Structure, Floristic Composition and Diversity, and Timber Tree Regeneration in the Ituri Forest, Democratic Republic of Congo

Impacts of Selective Logging and Agricultural Clearing on Forest Structure, Floristic Composition and Diversity, and Timber Tree Regeneration in the Ituri Forest, Democratic Republic of Congo

Spatial distribution of gaps along three catenas in the moist forest of Taï National Park, Ivory Coast

A forest beyond the trees: Tree cutting in rural Ghana

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