Is Pro-Sustainability Orientation Related to Non-timber Forest-Product Exploitation? Evidence from Communities Adjoining Onigambari Forest Reserve, Southwestern Nigeria

2021 ◽  
pp. 1-16
Author(s):  
Fausat Motunrayo Ibrahim ◽  
Benson Osikabor ◽  
Olawale Julius Aluko ◽  
Grace Oluwatobi Ogunwale ◽  
Bolanle Tawakalitu Olatunji
Keyword(s):  
Forest Product ◽  
Southwestern Nigeria ◽  
Forest Reserve

scholarly journals Bayesian Change Point Detection of Vegetation Cover Dynamics of Akure Forest Reserve, Ondo State in Southwestern, Nigeria

2021 ◽  
Vol 25 (8) ◽  
pp. 1449-1452
Author(s):  
P.A. Ukoha ◽  
S.J. Okonkwo ◽  
A.R. Adewoye
Keyword(s):  
Time Series ◽  
Change Point ◽  
Vegetation Index ◽  
Google Earth ◽  
Change Point Detection ◽  
Mcmc Methods ◽  
Landsat Images ◽  
Southwestern Nigeria ◽  
Forest Reserve ◽  
Point Detection

This study uses satellite acquired vegetation index data to monitor changes in Akure forest reserve. Enhanced Vegetation Index (EVI) time series datasets were extracted from Landsat images; extraction was performed on the Google Earth Engine (GEE) platform. The datasets were analyzed using Bayesian Change Point (BCP) to monitor the abrupt changes in vegetation dynamics associated with deforestation. The BCP shows the magnitude of changes over the years, from the posterior data obtained. BCP focuses on changes in the long‐range using Markov Chain Monte Carlo (MCMC) methods, this returns posterior probability at > 0.5% of a change point occurring at each time index in the time series. Three decades of Landsat data were classified using the random forest algorithm to assess the rate of deforestation within the study area. The results shows forest in 2000 (97.7%), 2010 (89.4%), 2020 (84.7%) and non-forest increase 2000 (2.0%), 2010 (10.6%), 2020 (15.3%). Kappa coefficient was also used to determine the accuracy of the classification.

scholarly journals Analysis of Pattern and Extent of Deforestation in Akure Forest Reserve, Ondo State, Nigeria

2019 ◽  
Vol 12 (1-2) ◽  
pp. 1-11
Author(s):  
Isaac Adelakun Gbiri ◽  
Nathaniel Olugbade Adeoye
Keyword(s):  
Anthropogenic Activities ◽  
Remote Sensing Data ◽  
Satellite System ◽  
Optical Remote Sensing ◽  
Human Beings ◽  
Southwestern Nigeria ◽  
Forest Reserve ◽  
Forest Depletion ◽  
Undisturbed Forest ◽  
The Government

Abstract Forest Reserves in Southwestern Nigeria have been threatened by urbanization and anthropogenic activities and the rate of deforestation is not known. This study examined the vegetation characteristics of Akure Forest Reserve using optical remote sensing data. It also assessed the changing pattern in the forest reserve between 1986 and 2017. Global Navigation Satellite System (GNSS) receiver was used to capture the location of the prominent settlements that surrounded the Forest Reserve in order to evaluate their effects on the forest. Landsat TM 1986, Landsat ETM+ 2002 and Landsat OLI_TIRS 2017 with 30m resolution were classified to assess the spatio-temporal changing pattern of the forest reserve. The results showed different composition of vegetation, which include undisturbed forest, secondary regrowth and farmlands. The study further revealed that in 1986, 2002 and 2017, undisturbed forest constituted 63.3%, 32.4% and 32.1% of the entire land area respectively, while secondary regrowth occupied 8.3% in 1986, 9.5% in 2002 and 15.6% in 2017. The farmlands had erratic growth between 1986 and 2017. It was 16.9% in 1986, 22.1% in 2002 and 17.5% in 2017. The bare ground exhibited inconsistency in the coverage. In 1986 the areal extent was 11.5%, when it increased to 36% in 2002 and decreased to 31.9% in 2017. In conclusion, the study revealed the extent of forest depletion at Akure Forest Reserve and it is therefore important that the residents, the government and the researchers show major concern about some of the critical factors to human beings that are responsible for forest depletion.

scholarly journals Forest in the Context of Social Change: Traditional Orientation and Forest Mystification in a Nigerian Forest-Reserve Setting

2021 ◽  
Vol 5 (3) ◽  
pp. 496
Author(s):  
Fausat Motunrayo Ibrahim ◽  
Benson Osikabor ◽  
Bolanle Tawakalitu Olatunji ◽  
Grace Oluwatobi Ogunwale ◽  
Olawale Julius Aluko
Keyword(s):  
Social Change ◽  
Social Cognition ◽  
Human Development ◽  
Cultural Change ◽  
Environmental Sustainability ◽  
Traditional Culture ◽  
Southwestern Nigeria ◽  
Forest Reserve ◽  
Social Events ◽  
Development Support

This article exposits the mystification of forests among people residing in proximity to a forest reserve in southwestern Nigeria. The theory of material engagement and the ecology of human development support the position that the forest is a classical motivator of traditional culture. Still, socio-cultural change is prevalent. As an element of this change, forest-based social cognition warrants systematic examination in the interest of environmental sustainability. This is because the concurrent conveyance of sustainability-promoting immaterial culture across generations is a component of the pathway to a sustainable future. Moreover, systems theory posits that social events affect each other. Since social change is not solitary but encompassing, forest mystification was examined along with other indicators of traditional orientation including attitude towards―religion, ageing, gender; and cultural enthusiasm. The results indicate that forest mystification is still huge and connected with orientations towards ageing and cultural enthusiasm. This exemplifies the Yorùbá social context’s manifestation of continuity as opposed to change in forest culture; and stands in solidarity with traditional African mentality.

scholarly journals Fluxes in litter decomposition in three selected indigenous species and teak in a converted rainforest ecosystem in southwestern Nigeria

2012 ◽  
Vol 47 (3) ◽  
pp. 333-338
Author(s):  
AF Ojo ◽  
O Kadeba ◽  
J Kayode
Keyword(s):  
Litter Decomposition ◽  
Tree Species ◽  
Soil Nutrient ◽  
Tectona Grandis ◽  
Indigenous Species ◽  
Southwestern Nigeria ◽  
Forest Reserve ◽  
Nutrient Pool ◽  
Indigenous Tree Species ◽  
Litter Nutrients

The study investigated the rate of litter decomposition in three prominent litter releasing indigenous tree species in the natural rainforest and an exotic species Teak, Tectona grandis Lim., in the adjacent plantation in Akure forest reserve, southwestern Nigeria. Results showed that teak had the highest litter decomposition rate and Mansonia altissima the least. There was no relationship between the rates of decomposition among all species examined. The implication is that teak litter had the highest probability of releasing litter nutrients into the soil nutrient pool than any of the selected indigenous tree species while Mansonia altissima had the least. However all species had high decomposition rates. This implies that soil fertility will be maintained if any of the tree species were to be used for monoculture plantations. DOI: http://dx.doi.org/10.3329/bjsir.v47i3.13069 Bangladesh J. Sci. Ind. Res. 47(3), 333-338 2012

Chamaedorea (Xaté) in the Greater Maya Mountains and the Chiquibul Forest Reserve, Belize: An Economic Assessment of a Non-Timber Forest Product

2006 ◽  
Vol 60 (3) ◽  
pp. 265-283 ◽  
Author(s):  
Samuel G. M. Bridgewater ◽  
Philippa Pickles ◽  
Nancy C. Garwood ◽  
Malcolm Penn ◽  
Richard M. Bateman ◽  
...  
Keyword(s):  
Economic Assessment ◽  
Forest Product ◽  
Forest Reserve ◽  
Maya Mountains

scholarly journals Fitting Linear and Non Linear Growth Models for Selected Plantations in Omo Forest Reserve Southwestern Nigeria

2020 ◽  
pp. 19-29
Author(s):  
E. T. Adedeji ◽  
A. S. Akinbowale ◽  
O. A. Akinbode
Keyword(s):  
Linear Models ◽  
Tectona Grandis ◽  
Pinus Caribaea ◽  
Southwestern Nigeria ◽  
Forest Reserve ◽  
Diameter At Breast Height ◽  
Breast Height ◽  
Non Linear ◽  
Nauclea Diderrichii ◽  
The Relationship

This study was conducted to assess the suitability of forest models in Tectona grandis, Pinus caribaea and Nauclea diderrichii stands at Omo forest reserve, Ijebu East, Ogun State, Southwestern Nigeria. Temporary sample plots of equal size (25 m x 25 m) were laid while complete enumeration were carried out in each sampled plot and tree growth variables such as diameter at breast height (dbh), diameter at the top (dt), diameter at the middle (dm) and diameter at the base (db) as well as total height of all trees were measured. Simple linear models and six non linear models were developed and assessed for the selected plantation. The linear model developed _ R-squared ranged from 77% to 93%. The least R- square was obtained in Tectona grandis plantation and the highest was obtained in 93% Pinus caribaea. All the models have high F values ranging from 234.71 to 2965.40. In Tectona grandis plantation, Logistic power model, gave a good fit in describing the relationship between diameter at breast height and volume with AICC values of -2368.92, 0.22 each. The Sigmond models that gave a good fit in describing the relationship between the diameter at breast height and volume in Pinus caribaea were Weibull model (-719.19, 0.09) while Gompertz relation is the best for Nauclea diderrichii, respectively. The various models generated in the study are highly recommended for use in estimating the growth characteristics of the plantation in the future.

scholarly journals Growth characteristics of tree species in natural stands of Gambari forest reserve, Southwestern Nigeria

2020 ◽  
Vol 7 (1) ◽  
pp. 101-109
Author(s):  
Q. A. Onilude ◽  
◽  
R. Adewoye ◽  
O. A. Akinyemi ◽  
S. O. Osundun ◽  
...  
Keyword(s):  
Tree Species ◽  
Growth Characteristics ◽  
Southwestern Nigeria ◽  
Forest Reserve ◽  
Natural Stands
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