By: Seraphine Ebenye Mokake
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A critical step in sustainable forest management is to ensure the establishment and regeneration of seedlings and sapling of exploitable tree species following logging. Since selective logging is one of the main silvicultural practices in Cameroon, a detailed understanding of regeneration following selective logging is vital.
This study evaluated the natural regeneration of some commercial timber species in logged and unlogged forest types in two forest management units (FMU) in the East Region of Cameroon (FMU 10052 and 10025). Two transects of 5000 x 50m each were established in logged and unlogged forest types. Eleven commercial tree species were assessed for fruit fall, the number of seedlings established and the height increment of the established seedlings. Three of these commercial tree species fruited in both forest types. Fruit fall was significantly higher (p≤0.001)in the logged forest (492 fruits/ha)than in the unlogged forest (52 fruits/ha). Comparing species that fruited in both forest types Klainedoxa gabonensis recorded the highest number of fruit fall(84 fruits/ha) and least (0.24 fruits/ha) in the logged and unlogged forest types respectively. Seedling establishment was significantly higher (p≤0.001) in the unlogged forest (404 seedlings/ha) than in the logged forest (72 seedlings /ha). Seedling performance was better in the unlogged forest compared to the logged forest (low mortality rate). Due to the low seedling establishment and performance of these species in the logged forest, seed trees should be marked and protected prior and after logging as prescribed in the sustainable forest management.
Journal of Biodiversity and Environmental Sciences-JBES is an open-access scholarly research journal, published by International Network for Natural Sciences-INNSPUB. JBES published original scientific articles in different field of Environmental Sciences and Biodiversity. JBES published 2 Volume and 12 issue per calender year.
Asner GP, Knapp DE, Broadbent EN, Oliviera PJC, Keller M, Silva JN. 2005. Selective logging in the Brazillian Amazon. Science 310, 480-482.
http://dx.doi.org/10/1126/science. 1118051
Augspurger CK, Kelly CK. 1984. Pathogen mortality of tropical tree seedlings: experimental studies of the effects of dispersal distance, seedling density and light conditions. Oecologia 61(2), 211-217.
http://dx.doi.org/10.1007/BF00396763
Bell DT, Plummer JA, Taylor SK. 1993. Seed germination ecology in Southwestern Western Australia Botanical Review 76, 24–73.
https://doi.org/10;1007/BF02856612
Bonnell TR, Reyna-Hurtado R, Chapman CA.
Brewer SW, Rejmanek MJ. 1999. Small rodents as significant dispersers of tree seeds in a Neotropical forest. Journal of Vegetation Science, 10(2), 165–174.
http://dx.doi.org/102307/3237138
Chazdon RL, Pearcy RW, Lee DW, Fetcher N. 1996. Photosynthetic responses of tropical forest plants to contrasting light environments. In Mulkey, S.S., Chazdon, R.L, and Smith, A.P. Eds. Tropical Forest Plant Ecophysiology. New York, US. Chapman and Hall. p. 5-55.
Costa FRC, Magnusson WE. 2003. Effects of selective logging on the diversity and abundance of flowering and fruiting understory plants in Central Amazonian forest. Biotropica 35, 103–114.
http://dx.doi.org/10.1111/j.17447429.2003.tb00267.x
Curran LM, Webb CO. 2000. Experimental tests of the spatiotemporal scale of seed predation in mast-fruiting Dipterocarpaceae. Ecological Monographs 70, 129–148.
Dauber E, Fredericksen TS, Pena CM. 2005. Sustainability of timber harvesting in Bolivian Tropical Forests. Forest Ecology and Management 214, 294-304.
Deckker M, de Graaf NR. 2003. Pioneer and climax tree regeneration following selective logging with silviculture in Suriname. Forest Ecology and Management, 172, 183–190.
Delissio LJ. 2000. Tree seedling dynamics and drought in Bornean rain forests. Ph.D. dissertation. Department of Biology, Boston University, Boston. 239 p.
Duah-Gyamfi A, Swaine MD, Kyere B,
Agyeman VK. 2012. Natural regeneration of timber species following selective logging in a tropical moist semi-deciduous forest in Ghana. IUFRO FORNESSA Congress.
Felton A, Felton AM, Wood J, Lindenmayer DB. 2006. Vegetation structure, phenology, and regeneration in the natural and anthropogenic tree-fall gaps of a reduced-impact logged subtropical Bolivian forest. Forest Ecology and Management 235, 186–193.
Fitzpatrick M. 2002. Cameroon,” Lonely Planet West Africa, 5th ed. China: Lonely Planet Publications Pty Ltd.
Get the full articles at: J. Bio. Env. Sci. 12(1), 22-39, January 2018.
Journal of Biodiversity and Environmental Sciences-JBES is an open-access scholarly research journal, published by International Network for Natural Sciences-INNSPUB. JBES published original scientific articles in different field of Environmental Sciences and Biodiversity. JBES published 2 Volume and 12 issue per calender year.
Natural regeneration of some commercial timber tree species following selective logging in a semi deciduous forest in the east region of CameroonReference:
Asner GP, Knapp DE, Broadbent EN, Oliviera PJC, Keller M, Silva JN. 2005. Selective logging in the Brazillian Amazon. Science 310, 480-482.
http://dx.doi.org/10/1126/science. 1118051
Augspurger CK, Kelly CK. 1984. Pathogen mortality of tropical tree seedlings: experimental studies of the effects of dispersal distance, seedling density and light conditions. Oecologia 61(2), 211-217.
http://dx.doi.org/10.1007/BF00396763
Bell DT, Plummer JA, Taylor SK. 1993. Seed germination ecology in Southwestern Western Australia Botanical Review 76, 24–73.
https://doi.org/10;1007/BF02856612
Bonnell TR, Reyna-Hurtado R, Chapman CA.
- Post-logging recovery time is longer than expected in an East African tropical forest. Forest Ecology and Management 261, 855–864.
Brewer SW, Rejmanek MJ. 1999. Small rodents as significant dispersers of tree seeds in a Neotropical forest. Journal of Vegetation Science, 10(2), 165–174.
http://dx.doi.org/102307/3237138
Chazdon RL, Pearcy RW, Lee DW, Fetcher N. 1996. Photosynthetic responses of tropical forest plants to contrasting light environments. In Mulkey, S.S., Chazdon, R.L, and Smith, A.P. Eds. Tropical Forest Plant Ecophysiology. New York, US. Chapman and Hall. p. 5-55.
Costa FRC, Magnusson WE. 2003. Effects of selective logging on the diversity and abundance of flowering and fruiting understory plants in Central Amazonian forest. Biotropica 35, 103–114.
http://dx.doi.org/10.1111/j.17447429.2003.tb00267.x
Curran LM, Webb CO. 2000. Experimental tests of the spatiotemporal scale of seed predation in mast-fruiting Dipterocarpaceae. Ecological Monographs 70, 129–148.
Dauber E, Fredericksen TS, Pena CM. 2005. Sustainability of timber harvesting in Bolivian Tropical Forests. Forest Ecology and Management 214, 294-304.
Deckker M, de Graaf NR. 2003. Pioneer and climax tree regeneration following selective logging with silviculture in Suriname. Forest Ecology and Management, 172, 183–190.
Delissio LJ. 2000. Tree seedling dynamics and drought in Bornean rain forests. Ph.D. dissertation. Department of Biology, Boston University, Boston. 239 p.
Duah-Gyamfi A, Swaine MD, Kyere B,
Agyeman VK. 2012. Natural regeneration of timber species following selective logging in a tropical moist semi-deciduous forest in Ghana. IUFRO FORNESSA Congress.
Felton A, Felton AM, Wood J, Lindenmayer DB. 2006. Vegetation structure, phenology, and regeneration in the natural and anthropogenic tree-fall gaps of a reduced-impact logged subtropical Bolivian forest. Forest Ecology and Management 235, 186–193.
Fitzpatrick M. 2002. Cameroon,” Lonely Planet West Africa, 5th ed. China: Lonely Planet Publications Pty Ltd.
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