Adewole Olagoke | Federal University Of Technology Akure,Nigeria (original) (raw)
Papers by Adewole Olagoke
Frontiers in sustainable food systems, Aug 23, 2023
Push-pull technology provides farmers in East Africa with an eco-friendly strategy that increases... more Push-pull technology provides farmers in East Africa with an eco-friendly strategy that increases crop yield and household income in smallholder cereal systems by controlling pests and improving soil health. Though promising for a sustainably intensified production, push-pull has been used at limited scale, primarily in maizeand sorghum-based production systems. Expanding the scope, applicability and acceptance of the practice in smallholder farming systems, will leverage the full potential of push-pull as a widely applicable sustainable farming practice. Using key informant interviews and focus group discussions, we explored farmers' needs and perceived pathways for integrating push-pull and other sustainable intensification practices in synergy with existing cropping systems in Kisumu, Vihiga and Siaya Counties in Western Kenya. We found that farmers in the region typically grow and intercrop a variety of crops, with maize being the most common crop. Farmers commonly practice crop-livestock farming, intercropping, crop rotation, manure and fertilizer use, and use improved varieties to increase maize production. Across the counties, integration of food legumes, agroforestry and crop-livestock farming, were identified as fundamental pathways for stretching the benefits of push-pull. Limitations to farmers' aspirations and key enablers for facilitating spontaneous adoption of identified sustainable intensification practices for push-pull farming systems are discussed.
IGI Global eBooks, Apr 8, 2022
This chapter encompasses a literature survey and strategic analysis to understand the elaboration... more This chapter encompasses a literature survey and strategic analysis to understand the elaboration and implementation of Participatory Forest Management (PFM) in Benin, with a focus on the case of the “Forêt des Trois Rivières”. By analyzing the historical background of forest management systems in Benin, we highlighted two major turning points. The first relates to the creation and autocratic management of protected forests, which took place from 1940 to 1990. The second change took place after the Rio conference in 1992, and this emphasized the importance of local communities in natural resources management. Moreover, the results of our strategic analysis of stakeholders involved in the specific case of Participatory Forest Management Plan (PFMP) of the “Forêt des Trois Rivières” showed that it is important to emphasize on active community participation while designing a participatory management plan and for decision making at the implementation stage. We also observed that alliances between foresters and timber loggers are likely to hinder the achievement of the PFM objectives.
Agronomy for Sustainable Development
Achieving food security remains a pressing challenge for small-scale farmers, especially in sub-S... more Achieving food security remains a pressing challenge for small-scale farmers, especially in sub-Saharan Africa and Latin America. Ongoing climate change, invasive noxious weeds, and crop pests further exacerbate the situation. Optimizing traditional cropping systems for sustainable yields and climate-resilient production is imperative in order to address this challenge. The pre-Columbian milpa system of intercropping maize with companion crops such as beans (Phaseolus vulgaris) and squash (Cucurbita spp.) is one effective system that has been shown to produce outstanding yields per unit area compared to monoculture systems. The Push-Pull Technology developed in East Africa, based on the use of repellent and trap companion plants intercropped with maize (and to a lesser extent sorghum), is seen to be similarly effective in minimizing the impact of major pests on yields, including striga weed (Striga spp.), maize stemborers, and the fall armyworm (Spodoptera frugiperda). Although both...
Journal of Vegetation Science
Questions: Soil resource heterogeneity influences the outcome of plant-plant interactions and, co... more Questions: Soil resource heterogeneity influences the outcome of plant-plant interactions and, consequently, species coexistence and diversity patterns. The magnitude and direction of heterogeneity effects vary widely, and the processes underlying such variations are not fully understood. In this study, we explored how and under what resource conditions small-scale heterogeneity modulates grassland plant diversity.
Changing environmental conditions often impose stressful growing conditions in plant communities.... more Changing environmental conditions often impose stressful growing conditions in plant communities. Until now, morphological plasticity, i.e. polymorphic growth physiognomies of plants, has not been sufficiently studied as a pivotal strategy for the whole ecosystem adaptation to environmental stress. We consider mangrove ecosystems as suitable models to provide insights on this subject. In the thesis, I investigate the ecological significance of tree morphological plasticity in the structural development and the dynamics of mangrove forests. I conducted field experiments in two regions located on both sides of the Amazon River mouths i.e. in French Guiana and North Brazil. Forest inventories were carried out in contrasting mangrove stands in both regions. The thesis combines empirical analysis of field data, terrestrial laser scanning (TLS), and mechanistic, individual-based computer simulations. We published results that proved the TLS-based analysis of individual tree structure usef...
Changing environmental conditions often impose stressful growing conditions in plant communities.... more Changing environmental conditions often impose stressful growing conditions in plant communities. Until now, morphological plasticity, i.e. polymorphic growth physiognomies of plants, has not been sufficiently studied as a pivotal strategy for the whole ecosystem adaptation to environmental stress. We consider mangrove ecosystems as suitable models to provide insights on this subject. In the thesis, I investigate the ecological significance of tree morphological plasticity in the structural development and the dynamics of mangrove forests. I conducted field experiments in two regions located on both sides of the Amazon River mouths i.e. in French Guiana and North Brazil. Forest inventories were carried out in contrasting mangrove stands in both regions. The thesis combines empirical analysis of field data, terrestrial laser scanning (TLS), and mechanistic, individual-based computer simulations. We published results that proved the TLS-based analysis of individual tree structure usef...
Journal of Forestry Research, 2010
The efficacies of some indigenous herbal dyes for use in staining plant materials were examined ... more The efficacies of some indigenous herbal dyes for use in
staining plant materials were examined to obtain non-toxic, eco-friendly
and cheap stains for use in plant histology. Dye extracts from Bixa
orellana, Curcuma domestica, Lonchocarpus cyanescens and Pterocarpus
osun were used to stain wood sections using the existing standard
staining procedures with little modification. All the extracts had affinity
for the fibre and vessel elements except the extract from L. cyanescens.
The extracts from C. domestica and B. orellana had higher selectivity
than those of P. osun for fibre. From the results of the absorbance curves,
each of the dye extracts from all speciese had minimum of two peaks,
indicating that they had two or more colour imparting chromophores
except dye extract from C. domestica. All the dye extracts were acidic
with pH range of 3.77 to 6.77. Therefore, this study shows that dye extracts
from B. orellana, C. domestica and P. osun could be solitarily or in
combination with artificial dyes for plant histological staining.
Keywords: herbal dyes; indigenous herbs; ecofriendly stains; histological
staining; wood sections
This study was carried out to examine the efficacy of Strict Nature Reserves (SNR) as a means of ... more This study was carried out to examine the efficacy of Strict Nature Reserves (SNR) as a means of biodiversity conservation. This was achieved by assessing the status of the forest in terms of tree species diversity, abundance and growth yield. Data were collected from four plots of one hectare size each, randomly located in the forest. In each plot, all tree species (dbh ≥ 10 cm) were identified and their height, diameter at breast height (dbh) and diameters at the top, middle and base were measured. There were 387 stems ha-1, belonging to 94 tropical hardwood species, 80 genera and 30 families in the SNR. The most abundant species and family were Celtis zenkeri of Ulmaceae family (41 stems ha-1) and Sterculiaceae (10 species), respectively. The Shannon-Wiener index (3.75) and evenness (0.82) and other diversity indices were very high, indicating that the forest is a potential biodiversity hotspot. The indices compared favourably with several protected areas that are biodiversity ho...
Biogeosciences, 2014
Marine ecosystems are experiencing unprecedented degradation rates higher than any other ecosyste... more Marine ecosystems are experiencing unprecedented degradation rates higher than any other ecosystem on the planet, which in some instances are up to 4 times those of rainforests. Mangrove ecosystems have especially been impacted by compounded anthropogenic pressures leading to significant cover reductions of between 35 and 50% (equivalent to 1–2% loss pa) for the last half century. The main objective of this study was to test the hypothesis that peri-urban mangroves suffering from compounded and intense pressures may be experiencing higher degradation rates than the global mean (and/or national mean for Kenya) using Mombasa mangroves (comprising Tudor and Mwache creeks) as a case study. Stratified sampling was used to sample along 22 and 10 belt transects in Mwache and Tudor respectively, set to capture stand heterogeneity in terms of species composition and structure in addition to perceived human pressure gradients using proximity to human habitations as a proxy. We acquired SPOT (...
Sustainable Agriculture Research, 2012
Wood anatomy of five Cola species was investigated to identify and describe anatomical features i... more Wood anatomy of five Cola species was investigated to identify and describe anatomical features in search of distinctive characters that could possibly be used in the resolution of their taxonomy. Transverse, tangential and radial longitudinal sections and macerated samples were prepared into microscopic slides. Characteristic similarity and disparity in the tissues arrangement as well as cell inclusions were noted for description and delimitation. All the five Cola species studied had essentially the same anatomical features, but the difficulty posed by the identification of Cola acuminata and Cola nitida when not in fruit could be resolved using anatomical features. Cola acuminata have extensive fibre and numerous crystals relative to Cola nitida, while Cola hispida and Cola millenii are the only species having monohydric crystals. Cola gigantica is the only species that have few xylem fibres while other species have extensive xylem fibre. These features have proved very functional and strongly of diagnostic value in the classification and delimitation of the studied Cola species.
2015 is declared as the Mangrove Year by the CNRS-INEE (www.cnrs.fr) and the IRD (www.ird.fr), tw... more 2015 is declared as the Mangrove Year by the CNRS-INEE (www.cnrs.fr) and the IRD (www.ird.fr), two leading French research institutes on natural ecosystems. As a contribution to this initiative, we prepared the directory of persons conducting scientific works on mangroves from French research laboratories, national or local organizations and private agencies. We collated the countries of study and the fields of expertise developed by each person. PhD and post-doctoral students are also included in this database since we consider them as the people of the future. It is our strong belief that sharing the basic data of these specialists constitutes pivotal information for strengthening national and international scientific works dedicated to knowledge acquisition on mangroves ecosystems and coasts. It is the only way we have to claim the necessity of mangrove preservation worldwide. So, we hope that this directory could be linked to others built in other mangrove countries.
Sustainable Agriculture Research, 2012
Wood anatomy of five Cola species was investigated to identify and describe anatomical features i... more Wood anatomy of five Cola species was investigated to identify and describe anatomical features in search of distinctive characters that could possibly be used in the resolution of their taxonomy. Transverse, tangential and radial longitudinal sections and macerated samples were prepared into microscopic slides. Characteristic similarity and disparity in the tissues arrangement as well as cell inclusions were noted for description and delimitation. All the five Cola species studied had essentially the same anatomical features, but the difficulty posed by the identification of Cola acuminata and Cola nitida when not in fruit could be resolved using anatomical features. Cola acuminata have extensive fibre and numerous crystals relative to Cola nitida, while Cola hispida and Cola millenii are the only species having monohydric crystals. Cola gigantica is the only species that have few xylem fibres while other species have extensive xylem fibre. These features have proved very functional and strongly of diagnostic value in the classification and delimitation of the studied Cola species.
Practice, Progress, and Proficiency in Sustainability
This chapter encompasses a literature survey and strategic analysis to understand the elaboration... more This chapter encompasses a literature survey and strategic analysis to understand the elaboration and implementation of Participatory Forest Management (PFM) in Benin, with a focus on the case of the “Forêt des Trois Rivières”. By analyzing the historical background of forest management systems in Benin, we highlighted two major turning points. The first relates to the creation and autocratic management of protected forests, which took place from 1940 to 1990. The second change took place after the Rio conference in 1992, and this emphasized the importance of local communities in natural resources management. Moreover, the results of our strategic analysis of stakeholders involved in the specific case of Participatory Forest Management Plan (PFMP) of the “Forêt des Trois Rivières” showed that it is important to emphasize on active community participation while designing a participatory management plan and for decision making at the implementation stage. We also observed that allianc...
Marine Pollution Bulletin
Monitoring mangrove forests after aquaculture abandonment using time series of very high spatial ... more Monitoring mangrove forests after aquaculture abandonment using time series of very high spatial resolution satellite images: A case study from the Perancak estuary, Bali, Indonesia. Marine Pollution Bulletin, Elsevier, 2018, 131, pp.
Journal of Coastal Research, 2016
Journal of Forest and Environmental Science, 2014
Timber harvest in natural forests and its implications on carbon sequestration were investigated ... more Timber harvest in natural forests and its implications on carbon sequestration were investigated in the Southwestern Nigeria. Data on timber harvest from forest estates for a 3-year period were collected from the official record of States' Forestry Department. The data registered the species, volume and number of timbers exploited during the study period. The data were analyzed accordingly for rate of timber harvest and carbon value of the exploited timbers using existing biomass functions. Values were compared for significant differences among states using one way analysis of variance. The results showed that the most exploited logs, in terms of volume and number of trees, have the highest amount of carbon removal. There was a variation in type of timber species being exploited from each state. The total number of harvested trees from Oyo, Ondo, Ogun, Ekiti and Osun were estimated at 100,205; 111,789; 753; 15,884 and 18,153 respectively. Total quantity of carbon removed for the 3-year period stood at 2.3 million metric tons, and this translated to 8.4 million metric tons of CO2. The annual carbon and CO2 removal therefore were estimated at 760,120.73 tons and 2.8 million tons/ year respectively. There were significant differences (p＜0.05) in the amount of CO2 removed from the five states. Based on our result, we inferred that there is increasing pressure on economic tree species and it is plausible that they are becoming scarce from the forests in Southwestern Nigeria.. If the present rate of log removal is not controlled, forests could become carbon source rather than carbon sink and the on biological conservation, wood availability and climate change may turn out grave. For the forest to perform its environmental role as carbon sink, urgent conservation measures and logging policies are needed to be put in place.
A. germinans *AGB = Aboveground biomass; H=height; = Wood density; and = coefficients; RSE = Resi... more A. germinans *AGB = Aboveground biomass; H=height; = Wood density; and = coefficients; RSE = Residual standard error of estimates; AIC = Akaike Information Criterion, a measure of model's relative quality (the best model takes the lowest AIC); M1-M4= New Models
Frontiers in sustainable food systems, Aug 23, 2023
Push-pull technology provides farmers in East Africa with an eco-friendly strategy that increases... more Push-pull technology provides farmers in East Africa with an eco-friendly strategy that increases crop yield and household income in smallholder cereal systems by controlling pests and improving soil health. Though promising for a sustainably intensified production, push-pull has been used at limited scale, primarily in maizeand sorghum-based production systems. Expanding the scope, applicability and acceptance of the practice in smallholder farming systems, will leverage the full potential of push-pull as a widely applicable sustainable farming practice. Using key informant interviews and focus group discussions, we explored farmers' needs and perceived pathways for integrating push-pull and other sustainable intensification practices in synergy with existing cropping systems in Kisumu, Vihiga and Siaya Counties in Western Kenya. We found that farmers in the region typically grow and intercrop a variety of crops, with maize being the most common crop. Farmers commonly practice crop-livestock farming, intercropping, crop rotation, manure and fertilizer use, and use improved varieties to increase maize production. Across the counties, integration of food legumes, agroforestry and crop-livestock farming, were identified as fundamental pathways for stretching the benefits of push-pull. Limitations to farmers' aspirations and key enablers for facilitating spontaneous adoption of identified sustainable intensification practices for push-pull farming systems are discussed.
IGI Global eBooks, Apr 8, 2022
This chapter encompasses a literature survey and strategic analysis to understand the elaboration... more This chapter encompasses a literature survey and strategic analysis to understand the elaboration and implementation of Participatory Forest Management (PFM) in Benin, with a focus on the case of the “Forêt des Trois Rivières”. By analyzing the historical background of forest management systems in Benin, we highlighted two major turning points. The first relates to the creation and autocratic management of protected forests, which took place from 1940 to 1990. The second change took place after the Rio conference in 1992, and this emphasized the importance of local communities in natural resources management. Moreover, the results of our strategic analysis of stakeholders involved in the specific case of Participatory Forest Management Plan (PFMP) of the “Forêt des Trois Rivières” showed that it is important to emphasize on active community participation while designing a participatory management plan and for decision making at the implementation stage. We also observed that alliances between foresters and timber loggers are likely to hinder the achievement of the PFM objectives.
Agronomy for Sustainable Development
Achieving food security remains a pressing challenge for small-scale farmers, especially in sub-S... more Achieving food security remains a pressing challenge for small-scale farmers, especially in sub-Saharan Africa and Latin America. Ongoing climate change, invasive noxious weeds, and crop pests further exacerbate the situation. Optimizing traditional cropping systems for sustainable yields and climate-resilient production is imperative in order to address this challenge. The pre-Columbian milpa system of intercropping maize with companion crops such as beans (Phaseolus vulgaris) and squash (Cucurbita spp.) is one effective system that has been shown to produce outstanding yields per unit area compared to monoculture systems. The Push-Pull Technology developed in East Africa, based on the use of repellent and trap companion plants intercropped with maize (and to a lesser extent sorghum), is seen to be similarly effective in minimizing the impact of major pests on yields, including striga weed (Striga spp.), maize stemborers, and the fall armyworm (Spodoptera frugiperda). Although both...
Journal of Vegetation Science
Questions: Soil resource heterogeneity influences the outcome of plant-plant interactions and, co... more Questions: Soil resource heterogeneity influences the outcome of plant-plant interactions and, consequently, species coexistence and diversity patterns. The magnitude and direction of heterogeneity effects vary widely, and the processes underlying such variations are not fully understood. In this study, we explored how and under what resource conditions small-scale heterogeneity modulates grassland plant diversity.
Changing environmental conditions often impose stressful growing conditions in plant communities.... more Changing environmental conditions often impose stressful growing conditions in plant communities. Until now, morphological plasticity, i.e. polymorphic growth physiognomies of plants, has not been sufficiently studied as a pivotal strategy for the whole ecosystem adaptation to environmental stress. We consider mangrove ecosystems as suitable models to provide insights on this subject. In the thesis, I investigate the ecological significance of tree morphological plasticity in the structural development and the dynamics of mangrove forests. I conducted field experiments in two regions located on both sides of the Amazon River mouths i.e. in French Guiana and North Brazil. Forest inventories were carried out in contrasting mangrove stands in both regions. The thesis combines empirical analysis of field data, terrestrial laser scanning (TLS), and mechanistic, individual-based computer simulations. We published results that proved the TLS-based analysis of individual tree structure usef...
Changing environmental conditions often impose stressful growing conditions in plant communities.... more Changing environmental conditions often impose stressful growing conditions in plant communities. Until now, morphological plasticity, i.e. polymorphic growth physiognomies of plants, has not been sufficiently studied as a pivotal strategy for the whole ecosystem adaptation to environmental stress. We consider mangrove ecosystems as suitable models to provide insights on this subject. In the thesis, I investigate the ecological significance of tree morphological plasticity in the structural development and the dynamics of mangrove forests. I conducted field experiments in two regions located on both sides of the Amazon River mouths i.e. in French Guiana and North Brazil. Forest inventories were carried out in contrasting mangrove stands in both regions. The thesis combines empirical analysis of field data, terrestrial laser scanning (TLS), and mechanistic, individual-based computer simulations. We published results that proved the TLS-based analysis of individual tree structure usef...
Journal of Forestry Research, 2010
The efficacies of some indigenous herbal dyes for use in staining plant materials were examined ... more The efficacies of some indigenous herbal dyes for use in
staining plant materials were examined to obtain non-toxic, eco-friendly
and cheap stains for use in plant histology. Dye extracts from Bixa
orellana, Curcuma domestica, Lonchocarpus cyanescens and Pterocarpus
osun were used to stain wood sections using the existing standard
staining procedures with little modification. All the extracts had affinity
for the fibre and vessel elements except the extract from L. cyanescens.
The extracts from C. domestica and B. orellana had higher selectivity
than those of P. osun for fibre. From the results of the absorbance curves,
each of the dye extracts from all speciese had minimum of two peaks,
indicating that they had two or more colour imparting chromophores
except dye extract from C. domestica. All the dye extracts were acidic
with pH range of 3.77 to 6.77. Therefore, this study shows that dye extracts
from B. orellana, C. domestica and P. osun could be solitarily or in
combination with artificial dyes for plant histological staining.
Keywords: herbal dyes; indigenous herbs; ecofriendly stains; histological
staining; wood sections
This study was carried out to examine the efficacy of Strict Nature Reserves (SNR) as a means of ... more This study was carried out to examine the efficacy of Strict Nature Reserves (SNR) as a means of biodiversity conservation. This was achieved by assessing the status of the forest in terms of tree species diversity, abundance and growth yield. Data were collected from four plots of one hectare size each, randomly located in the forest. In each plot, all tree species (dbh ≥ 10 cm) were identified and their height, diameter at breast height (dbh) and diameters at the top, middle and base were measured. There were 387 stems ha-1, belonging to 94 tropical hardwood species, 80 genera and 30 families in the SNR. The most abundant species and family were Celtis zenkeri of Ulmaceae family (41 stems ha-1) and Sterculiaceae (10 species), respectively. The Shannon-Wiener index (3.75) and evenness (0.82) and other diversity indices were very high, indicating that the forest is a potential biodiversity hotspot. The indices compared favourably with several protected areas that are biodiversity ho...
Biogeosciences, 2014
Marine ecosystems are experiencing unprecedented degradation rates higher than any other ecosyste... more Marine ecosystems are experiencing unprecedented degradation rates higher than any other ecosystem on the planet, which in some instances are up to 4 times those of rainforests. Mangrove ecosystems have especially been impacted by compounded anthropogenic pressures leading to significant cover reductions of between 35 and 50% (equivalent to 1–2% loss pa) for the last half century. The main objective of this study was to test the hypothesis that peri-urban mangroves suffering from compounded and intense pressures may be experiencing higher degradation rates than the global mean (and/or national mean for Kenya) using Mombasa mangroves (comprising Tudor and Mwache creeks) as a case study. Stratified sampling was used to sample along 22 and 10 belt transects in Mwache and Tudor respectively, set to capture stand heterogeneity in terms of species composition and structure in addition to perceived human pressure gradients using proximity to human habitations as a proxy. We acquired SPOT (...
Sustainable Agriculture Research, 2012
Wood anatomy of five Cola species was investigated to identify and describe anatomical features i... more Wood anatomy of five Cola species was investigated to identify and describe anatomical features in search of distinctive characters that could possibly be used in the resolution of their taxonomy. Transverse, tangential and radial longitudinal sections and macerated samples were prepared into microscopic slides. Characteristic similarity and disparity in the tissues arrangement as well as cell inclusions were noted for description and delimitation. All the five Cola species studied had essentially the same anatomical features, but the difficulty posed by the identification of Cola acuminata and Cola nitida when not in fruit could be resolved using anatomical features. Cola acuminata have extensive fibre and numerous crystals relative to Cola nitida, while Cola hispida and Cola millenii are the only species having monohydric crystals. Cola gigantica is the only species that have few xylem fibres while other species have extensive xylem fibre. These features have proved very functional and strongly of diagnostic value in the classification and delimitation of the studied Cola species.
2015 is declared as the Mangrove Year by the CNRS-INEE (www.cnrs.fr) and the IRD (www.ird.fr), tw... more 2015 is declared as the Mangrove Year by the CNRS-INEE (www.cnrs.fr) and the IRD (www.ird.fr), two leading French research institutes on natural ecosystems. As a contribution to this initiative, we prepared the directory of persons conducting scientific works on mangroves from French research laboratories, national or local organizations and private agencies. We collated the countries of study and the fields of expertise developed by each person. PhD and post-doctoral students are also included in this database since we consider them as the people of the future. It is our strong belief that sharing the basic data of these specialists constitutes pivotal information for strengthening national and international scientific works dedicated to knowledge acquisition on mangroves ecosystems and coasts. It is the only way we have to claim the necessity of mangrove preservation worldwide. So, we hope that this directory could be linked to others built in other mangrove countries.
Sustainable Agriculture Research, 2012
Wood anatomy of five Cola species was investigated to identify and describe anatomical features i... more Wood anatomy of five Cola species was investigated to identify and describe anatomical features in search of distinctive characters that could possibly be used in the resolution of their taxonomy. Transverse, tangential and radial longitudinal sections and macerated samples were prepared into microscopic slides. Characteristic similarity and disparity in the tissues arrangement as well as cell inclusions were noted for description and delimitation. All the five Cola species studied had essentially the same anatomical features, but the difficulty posed by the identification of Cola acuminata and Cola nitida when not in fruit could be resolved using anatomical features. Cola acuminata have extensive fibre and numerous crystals relative to Cola nitida, while Cola hispida and Cola millenii are the only species having monohydric crystals. Cola gigantica is the only species that have few xylem fibres while other species have extensive xylem fibre. These features have proved very functional and strongly of diagnostic value in the classification and delimitation of the studied Cola species.
Practice, Progress, and Proficiency in Sustainability
This chapter encompasses a literature survey and strategic analysis to understand the elaboration... more This chapter encompasses a literature survey and strategic analysis to understand the elaboration and implementation of Participatory Forest Management (PFM) in Benin, with a focus on the case of the “Forêt des Trois Rivières”. By analyzing the historical background of forest management systems in Benin, we highlighted two major turning points. The first relates to the creation and autocratic management of protected forests, which took place from 1940 to 1990. The second change took place after the Rio conference in 1992, and this emphasized the importance of local communities in natural resources management. Moreover, the results of our strategic analysis of stakeholders involved in the specific case of Participatory Forest Management Plan (PFMP) of the “Forêt des Trois Rivières” showed that it is important to emphasize on active community participation while designing a participatory management plan and for decision making at the implementation stage. We also observed that allianc...
Marine Pollution Bulletin
Monitoring mangrove forests after aquaculture abandonment using time series of very high spatial ... more Monitoring mangrove forests after aquaculture abandonment using time series of very high spatial resolution satellite images: A case study from the Perancak estuary, Bali, Indonesia. Marine Pollution Bulletin, Elsevier, 2018, 131, pp.
Journal of Coastal Research, 2016
Journal of Forest and Environmental Science, 2014
Timber harvest in natural forests and its implications on carbon sequestration were investigated ... more Timber harvest in natural forests and its implications on carbon sequestration were investigated in the Southwestern Nigeria. Data on timber harvest from forest estates for a 3-year period were collected from the official record of States' Forestry Department. The data registered the species, volume and number of timbers exploited during the study period. The data were analyzed accordingly for rate of timber harvest and carbon value of the exploited timbers using existing biomass functions. Values were compared for significant differences among states using one way analysis of variance. The results showed that the most exploited logs, in terms of volume and number of trees, have the highest amount of carbon removal. There was a variation in type of timber species being exploited from each state. The total number of harvested trees from Oyo, Ondo, Ogun, Ekiti and Osun were estimated at 100,205; 111,789; 753; 15,884 and 18,153 respectively. Total quantity of carbon removed for the 3-year period stood at 2.3 million metric tons, and this translated to 8.4 million metric tons of CO2. The annual carbon and CO2 removal therefore were estimated at 760,120.73 tons and 2.8 million tons/ year respectively. There were significant differences (p＜0.05) in the amount of CO2 removed from the five states. Based on our result, we inferred that there is increasing pressure on economic tree species and it is plausible that they are becoming scarce from the forests in Southwestern Nigeria.. If the present rate of log removal is not controlled, forests could become carbon source rather than carbon sink and the on biological conservation, wood availability and climate change may turn out grave. For the forest to perform its environmental role as carbon sink, urgent conservation measures and logging policies are needed to be put in place.
A. germinans *AGB = Aboveground biomass; H=height; = Wood density; and = coefficients; RSE = Resi... more A. germinans *AGB = Aboveground biomass; H=height; = Wood density; and = coefficients; RSE = Residual standard error of estimates; AIC = Akaike Information Criterion, a measure of model's relative quality (the best model takes the lowest AIC); M1-M4= New Models