Logging Impacts in Tropical Lowland Humid Forest on Tree Species Diversity and Environmental Conservation

Adekunle, V. A. J.; Olagoke, Adewole; Ogundare, Lawrence F.

doi:10.1080/10549811.2010.489923

Cited by 8 publications

(15 citation statements)

References 12 publications

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“…Consequently, the high population of tree species, diversity index, Richness and Species evenness encountered in the study area can be attributed to the favorable micro-climate which included adequate sunlight, created by the canopy gap and the ban on the exploitation of trees in the area for timber as a result of the consecration of the area as a sacred forest, the sanctity of which has been held for generations. This finding agrees with similar works carried out in the tropical rainforest ecosystem that higher population of trees are usually observed in an undisturbed tropical rainforest when compared with those of the disturbed tropical rainforest (Nath et al, 2005;Udo et al, 2009;Adekunle et al, 2010).…”

Section: Discussionsupporting

confidence: 83%

“…Furthermore, the abundance and rarity of a plant species, especially those of great economic value, is a function of the intensity and pattern of exploitation which the forest is generally subjected to (Adekunle et al, 2010). Consequently, the high population of tree species, diversity index, Richness and Species evenness encountered in the study area can be attributed to the favorable micro-climate which included adequate sunlight, created by the canopy gap and the ban on the exploitation of trees in the area for timber as a result of the consecration of the area as a sacred forest, the sanctity of which has been held for generations.…”

Section: Discussionmentioning

confidence: 99%

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Population Density and Diversity of Plants Species in Ikot Efre Itak Community Forest, Akwa Ibom State, Nigeria

Nelson¹,

Udoakpan²,

Jacob³

2015

ijmec

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This study was aimed at assessing the diversity and population of plants species in Ikot Efre Itak Community forest in Nigeria. A total of 59 plant species were identified in the study area comprising 33 tree species, 12 shrub, 7 herbs, 34 climbers and 3 palms species. Mimusops heckelii and Canarium schweinfurthii, had the highest tree population density of 16 and 12 individual/0.6 ha respectively, all other tree species has a density of less than 10 individual/ha. In the shrub category, Bambusia vulgaris had the highest shrub population density with 31 individual/0.6 ha. Also, Costus afar and Hippocratea africana had the highest density of 53/0.6 ha and 11/0.6 ha respectively in the herb category. The result further shows that Ancistrophyllum secondiflorum had the highest population density of 23 in the palm category. Given the high rate of forest destruction in the country, there is need for to ensure sustainable conservation of the forest area to avoid further destruction by provision of alternative means of livelihood for the local population to reduce their dependence on these forest.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Population Density and Diversity of Plants Species in Ikot Efre Itak Community Forest, Akwa Ibom State, Nigeria

Nelson¹,

Udoakpan²,

Jacob³

2015

ijmec

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“…A su vez, la densidad (284 -625 individuos ha -1 ) y el volumen (86,4 -183,8 m 3 ha -1 ) presentan resultados superiores a los reportados por Adekunle et al (2010) para árboles con diámetro mayor a 10 cm (132,5 individuos ha -1 y 14,81 m 3 ha -1 ). Este comportamiento advierte que las selvas estudiadas en Quintana Roo se encuentran estructuralmente bien desarrolladas, aun cuando presentan aprovechamiento maderable.…”

Section: Discussionunclassified

“…El manejo forestal en selvas consiste en la aplicación de principios técnicos en las operaciones de producción, bajo una perspectiva de aprovechamiento sostenido de las especies de interés comercial (Gadow et al 2007, Günter et al 2011. Los efectos del manejo forestal sobre la estructura de las selvas tropicales han sido estudiados por diversos autores en diferentes partes del planeta (Villela et al 2006, Adekunle et al 2010, Imai et al 2012. Algunas de estas investigaciones demuestran que el aprovechamiento maderable afecta la repoblación natural, atributos estructurales, riqueza y composición de especies; particularmente por el derribo y arrastre del arbolado, que incide en la generación de claros y detona cambios en la distribución espacial y la dinámica de las comunidades (Finegan y Camacho 1999, Guariguata y Ostertag 2001.…”

Section: Introductionunclassified

Efecto del aprovechamiento forestal sobre la estructura y diversidad arbórea en selvas tropicales de Quintana Roo, México

et al. 2019

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Timber harvesting may lead to changes in the dasonomic and ecological attributes of tree vegetation, affecting the productivity and biodiversity of ecosystems. Although, little is known about the effect of this practice on the tropical forests of Mexico. The aim was to compare the structure and diversity in forest ejidos under timber harvesting in Quintana Roo. Two inventories (2009) were developed in Permanent Forest Areas (PFA) of medium evergreen forests. In Bacalar, 625 plots of 10x25 m distributed in 15.6 ha were used, while in Noh Bec 302 plots of 10x40m located in 48.32 ha. In each plot, all trees with normal diameter ≥ 7.5 cm were measured to document richness and dasometric variables. Structural indexes (IVI and FMVI) and diversity indexes (Shannon-Wiener H' and Sorensen Cs) were also calculated. In Bacalar there were 86 tree species (36 families and 81 genera), 284 tree ha-1 , 7.3 m 2 ha-1 of BA and 86.4 m 3 ha-1 of TTV; whereas in Noh Bec, we registered 106 species (34 families and 94 genera), 625 individuals ha-1 , 23.9 m 2 ha-1 of BA and 183.8 m 3 ha-1 of TTV. Bursera simaruba (IVI= 16.6 %, FMVI= 18.1 %) was the dominant species in Bacalar, whereas in Noh Bec it was Pouteria reticulata (IVI= 13.5 %, FMVI= 14.8 %). The species diversity was not different (P > 0.05) between ejidos (H'= 3.48 vs H'= 3.37); nonetheless there was a high floristic similarity (Cs= 60.4 %). Our results provide evidence that timber harvesting associated with the history of natural disturbances drives a key role in the structure and diversity of tropical forests.

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“…The area is also characterized by few scattered rainforests, wooded shrub lands and farmlands. Adekunle et al [12], observe that the trees could be seen to be green throughout the year because they retain their leaves all through the year. This is because the temperature and precipitation are sufficiently high for continuous growth.…”

Section: Study Area Descriptionmentioning

confidence: 99%

Mean Rate of Gully Head Advancement in Edo State, Nigeria

Osayande

Mallo

2017

Int. Ann. Sci.

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A B S T R A C TThe issue of gully erosion is of major concern in Nigeria. The study was carried out in Edo state, Southern Nigeria. Edo State was chosen as the study area due to the fact that the magnitude of gully erosion has resulted in the loss of lives and properties, destruction of arable lands and wastage of large areas of usable land. In this study, an effort was made to identify the major gully sites in the area and determined the mean rate of gully head advancement. The result revealed that gullies in Edo North had mean rate of head advancement of 80.30 meters per a year, Edo South 52.03 meters per a year and Edo Central is 17.80 meters per year.

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Logging Impacts in Tropical Lowland Humid Forest on Tree Species Diversity and Environmental Conservation

Cited by 8 publications

References 12 publications

Population Density and Diversity of Plants Species in Ikot Efre Itak Community Forest, Akwa Ibom State, Nigeria

Population Density and Diversity of Plants Species in Ikot Efre Itak Community Forest, Akwa Ibom State, Nigeria

Efecto del aprovechamiento forestal sobre la estructura y diversidad arbórea en selvas tropicales de Quintana Roo, México

Mean Rate of Gully Head Advancement in Edo State, Nigeria

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