March 2020
Minerology, geochemical composition and geotechnical properties of termite mound soil
Termitarian, the epigeal biogenic structure constructed by termites are widespread in the forest and derived savannah regions of Nigeria. Soil modification, with particular focus on the mineralogy, variation in geochemical composition and geotechnical properties of termite mound soil samples collected from nine location in the Ika area, Delta State of Nigeria are the objectives of this report. The major elements...
October 2019
Applying an indirect method for estimating and modelling the aboveground biomass and carbon for wood energy in the arid ecosystems of Aϊr Tenéré of Niger
Maintaining the economic, ecological and social services provided by the oases and the valley ecosystems of Aϊr, in the northern part of Niger, is important for local communities. The purpose of this study is to evaluate the supply and regulation services provided by these ecosystems through wood energy and carbon sequestration. Semi-structured surveys and dendrometric parameter measurements of woody species were...
October 2019
Forest land use and native trees diversity conservation in Togolese mega hotspot, Upper Guinean, West Africa
In tropics, species diversity in agricultural systems is often assessed without distinction between native and exotic species. However, the conservation value of an ecosystem depends on its richness in native species. This study was conducted to determine the conservation value of agricultural systems in Togo megahotspot, one of the species-rich sites in Upper Guinean. Specifically, the study compares fallow systems...
October 2019
Determinants of public preferences for Hawassa Amora-Gedel recreational park, Southern Ethiopia
This study investigates the economic value of Hawassa Amora-Gedel recreational park and determines the factors that affect the public’s willingness to pay for the quality improvement of the recreational park. A contingent valuation method was applied to measure public willingness to pay (WTP) for the quality improved recreational park. Based on random sampling technique, 390 visitors were selected to determine...
September 2019
Determinants of pastoral communities for adoption of forage production technology in Yabello rangeland, Southern Ethiopia
Nowadays, adoption of forage enhancement technology is considered a primary action plan for enhanced livestock production through increasing forage production among pastoralist communities in the rangeland of Yabello. In addition, a number of factors help in determining adoption of these practices that varies with different socio-demographical issues within the pastoral household. This study focused on identifying major...
August 2019
Challenges and opportunities for implementation of Integrated Water Resource Management in Omo-Gibe Basin, Ethiopia
Water is an essential element for the environment, food security and sustainable development. However, uncoordinated and competitive use of the resource can lead water to face the “tragedy of the commons”. Fragmented effects done so far in watershed management did not bring significant changes. Integrated water resource management is the ideal solution for sustainable development of the basins. This paper is...
August 2019
Influence of anthropogenic and ecological factors on stand structure of Pterocarpus erinaceus Poir. in Sudanian and Sahelian zones of Burkina Faso and Niger
Pterocarpus erinaceus is a popular tree for medicinal and fodder uses in the Sudano-Sahelian belt of West Africa. It is also used for its wood. P. erinaceus is one of the most exploited tree species in many countries in West Africa. Planks and logs have been exported towards the South-West Asian countries for ten years. This paper analysed the demographic structure, the ecological characteristics of natural stands of P....
July 2019
Ecological factors favouring mosquito breeding in Ifedore local government area of Ondo State, Nigeria
The physico-chemical and biological characteristics affecting the breeding ecology of mosquitoes in Ifedore local government area of Ondo State, Nigeria was investigated. Mosquito larvae were collected from 33 breeding sites using standard plastic dippers, transported to the laboratory and reared to adulthood. Physico-chemical characteristics, distance of each breeding site to the nearest residence and other biotic and...
July 2019
Is the expansion of Eucalyptus tree a curse or an opportunity? Implications from a dispute on the tree’s ecological and economic impact in Ethiopia: A review
This review was made to bring forth the contradicting outlooks from different research findings, challenges on the Eucalyptus species and show the opportunities we have with the tree. Due to the impact of Eucalyptus tree species on ecological health and agricultural productivity, ecologists, policy makers and politicians have had a negative view on this tree species. Hence, attempts are made to remove the tree from the...
June 2019
Spatio-temporal distribution of banana weevil Cosmopolites Sordidus [Germar] and nematodes of various genera in Uganda: A case of smallholder banana orchards in Western Uganda
Smallholder farmers’ banana orchards in Western Uganda were used to study the spatio-temporal factors influencing the distribution of banana weevils and parasitic nematodes in tissue culture and non-tissue culture banana types using Nested case control design. Nematodes were extracted from randomly collected composite banana root samples from 20 banana orchards. The banana weevils were trapped in the rainy and dry...
May 2019
Deforestation impact on ecosystem services in Kamfinsa sub-catchment of Kafue River Basin in Zambia
Forests are important in the lives of local communities as they provide poles for construction, wood fuel for cooking, help reduce soil erosion and provide various foods and medicines due to biodiversity. Most local communities depend on forests in supplementing their livelihoods. At the moment, forests are being lost and it is important to understand the impacts of the lost. Therefore, the objective of the study was to...
May 2019
Spatio-temporal variations in water and sediment parameters of Abule Agege, Abule Eledu, Ogbe, creeks adjoining Lagos Lagoon, Nigeria
Lagos lagoon is known to be highly contaminated due to the increase in human population, industries and influx of contaminants from adjoining creeks. The degree of this contamination can be affected by the seasonal variations in time and space. The spatio-temporal variations in the hydrochemistry and sediments parameters of three (3) Lagos lagoon’s creeks were investigated for six months (June, 2016 to November,...
April 2019
Evaluation of Desho Grass (Pennisetum pedicellatum Trin) lines for their adaptability at Mechara Research Station, Eastern Oromia, Ethiopia
This experiment was under taken at Mechara Agricultural Research center of on- station site for two consecutive years of 2016 and 2017 cropping season. The aim of the research was to identify the best adaptable and high biomass and dry matter yielders from four ecotype of Desho grass (Pennisetum pedicellatum) to demonstrate promising ecotypes for livestock producer’s community in the study area. Randomized...
March 2019
An evaluation of poaching and bushmeat off takes in the Ebo Forest Reserve (EFR), Littoral Region, Cameroon
Study on the poaching and bushmeat off takes /harvest in the Ebo Forest Reserve was carried out in 2012 and 2016 to identify and quantify species poached, poaching methods and seasonal impact on harvest rates and quantity. To achieve this task, purposeful and random sampling methods were used for the selection of respondents for questionnaires administration. In all, 182 from a population of about 461 poachers were...
January 2019
Flora composition, structure and diversity in the Kimbi Fungom National Park, North West Region, Cameroon
The Kimbi Fungom National Park is reported to be relatively less diverse compared to other national parks of Cameroon. This might be due to the configuration of the landscape and habitat types. The main objective of this study is to determine the species composition, structure and diversity in the heterogeneous landscape of the Kimbi Fungom National Park defined by different habitat types. The park was divided...
December 2018
Influence of early nitrogen application on physiological properties and ultrastructures of functional leaves of potatoes under drought stress
The changes in physiological properties and leaf ultrastructures caused by early nitrogen application for potatoes under drought stress were explored. Potato variety Chuanyu117 was used to conduct a controlled experiment in a sand medium. Nutrient solution treatments (0.84, 1.26, 1.68 and 2.10) were administered, followed by severe drought, moderate drought, and normal (control) water treatments (45, 60, and 75% of soil...
November 2018
Ecological preference by Anopheles gambiae complex (Diptera: Culicidae) in small natural microcosms in Maiduguri, Borno State, Arid Zone of North-E astern Nigeria
A study on ecological preference of breeding sites of Anopheles gambiae compared to other mosquito species were carried out in small natural microcosms. A total of sixteen small ponds, four each from North, South, East and West of Maiduguri Metropolitan were surveyed for the breeding and non-breeding sites for mosquitoes. In each pond mosquito larvae samples were collected by dip method after identifying species by...
November 2018
Influence of land use and land cover changes on ecosystem services in the Bilate Alaba Sub-watershed, Southern Ethiopia
Human well-being was obsessed with the natural scheme that provides various functions vital to support management at various levels. Land use/ land cover (LULC) dynamics over 45 years within four intervals (1972, 1986, 2008, and 2017) to evaluate its influence on ecosystem services. Geographic information system (GIS) and global value of coefficients’ database together with LULC dynamics were used to determine...
November 2018
Floristic and structural traits of tree vegetation in three sites with different level of disturbance in dense humid forest of Cameroon
This study characterizes the floristic and structural traits of trees in three sites of rainforest of Cameroon. The sites were exposed to different intensities of disturbances: Mangombe, highly and frequently disturbed; Bidou, moderately disturbed and Campo, undisturbed. Data collection were carried in a disposive comprising 65 plots of 20 m × 20 m randomly installed in each site for inventory, identification and...
October 2018
Vulnerability assessment of Gnidia glauca (Thymelaeaceae) exploitation, traditional uses and domestication potential in the community forest of Kilum-Ijim, North Western Cameroon
A study was conducted in the western highland region of Cameroon with the aim to assess sustainability of Gnidia glauca exploitation in its natural habitat. In 33 plots of 40 x 40 m, the unexploited, exploited and dead trees were evaluated for vitality using a multi-criteria vulnerability assessment method. An ethnobotanical survey was conducted with 60 respondents in six villages around Mount Oku area. Data were...
October 2018
Understorey birds’ nests predation in afrotropical forest ecosystem: A case study of Korup area, Cameroon
Worldwide understorey nesting bird species such as bulbuls can also be highly vulnerable to nest predation in disturbed landscapes because they breed mainly on the lower stage of the forest. We test the following hypotheses: the transformation of forests into alternative land use systems and the vegetation’s variables at the nesting sites will affect the understorey nest predation rates. The nests of 12...
October 2018
Litterfall, litter standing crops and nutrient dynamics as influenced by selective logging in tropical rainforest of Ebom, Southwest Cameroon
Litterfall, litter standing crops, nutrient dynamics and their turnover were studied in Ebom tropical rainforest of Cameroon six years after selective logging practices. Two sample sites, one in the logging part of the forest (disturbed site) and the other in the part of forest not affected by selective logging (undisturbed site) were used for the study. After two years of field experiment, the mean annual of litterfall...
September 2018
Land cover changes and their determinants in the coral rag ecosystem of the South District of Unguja, Zanzibar
This paper presents the findings on the study on land cover changes and their determinants in the coral rag ecosystem of the South District of Unguja. The study is based on data extracted from the 1975, 2009, and 2014 satellite images using remote sensing and geographical information systems (GIS) techniques. Additional data were collected through structured interviews in a household survey, focus group discussions, key...
September 2018
Governance of river basin: Gender dimension in framing issues at the local community level
Rivers are a vital part of the environment as they act as habitat for several life forms, of which the well-being of many livelihoods depends for survival. Yet, the misuse of river basins in most parts of the world particularly developing countries has intensified dramatically. Appling the concept of “framing” we attempted to understand how gendered perspectives play a role in the governance of a river basin...
September 2018
Structure and natural regeneration of woody species at central highlands of Ethiopia
The management of regeneration plays a vital role in sustainable forest practice by ensuring the future growing carbon stock and serving as an indicator of the forest condition of an area. In premises of the above-mentioned facts, the current study was conducted to investigate the population structure and regeneration status of woody species as an indicator for forest condition and to provide information on...
September 2018
Effect of cocoa farming intensification on biodiversity and ecosystem properties in southern Ghana
We investigated the effect of cocoa farming on biodiversity and ecosystem services under different cocoa management systems. The study was carried out in three cocoa producing districts in southwestern Ghana using Y-frame sampling scheme. Five 25 m × 25 m size plots were demarcated at 100 m intervals along in the cocoa farms and the natural forest reserves. Fifteen plots were demarcated in the cocoa farms per...
August 2018
Wetland ecosystems in Ethiopia and their implications in ecotourism and biodiversity conservation
Wetlands are ecosystems in which water covers the land. They provide economical, ecological, societal and recreational benefits to humans. Although complete documentation is lacking, wetlands make a significant part of Ethiopia covering an area of 13,700 km2. Wetlands with a great potential for ecotourism development in the country include the rift valley lakes, the floodplains in Gambella, the Awash River Gorge with...
August 2018
The role of indigenous technical knowledge and geographical information systems (GIS) in sustainable natural resource management around the Teso Community in Kenya
There is a growing awareness on the importance of indigenous technical knowledge and the necessity of its integration into modern knowledge in order to address problems related to natural resource conservation. However, there is a lack of study that demonstrates clearly how the two types of knowledge systems could be successfully integrated together. This paper presents such a framework that has been developed through a...
August 2018
Patterns of short- and long-term responses of honey bee (Apis mellifera L.) colony to changes in its internal environment
Management of the honey bee (Apis mellifera L.) colony for honey production and pollination of crops includes the manipulation of its internal environment. It is not yet understood how the colony might respond to such manipulations in the short- (within four or five days post-treatment) and long-term (after 21 days post-treatment) and whether the once generated short-term response persists into the long-term. Five...
July 2018
Population status, feeding ecology and activity pattern of common bushbuck (Tragelaphus Scriptus decula) in Sekele Mariam Forest, West Gojjam, Ethiopia
A study on the population status, feeding ecology and activity pattern of common bushbuck (Tragelaphus scriptus decula) was carried out in the Sekele Mariam Forest from December 2016 to August 2017 including wet and dry seasons. Data were collected using total count and direct observation method. The collected data was analyzed using descriptive statistics and compared with Chi-square test and one way ANOVA. Average...
May 2018
Woody species composition and structure of Amoro Forest in West Gojjam Zone, North Western Ethiopia
Ethiopia is one of the biodiversity reach areas in the world. A study was conducted at Amoro Forest to determine the woody species composition, vegetation and population structure. Vegetation data were collected from 36 plots (900 m2) systematically laid along transects. A hierarchical cluster analysis with R software was used to identify plant communities. Structural analysis of the forest was performed based on...
May 2018
Identification of the alternate host plants of the groundnut sucking bug (Rhyparochromus littoralis Dist.) in the Sudan savannah agro-ecological zone of Nigeria
To identify the alternate host plants of the groundnut sucking bug (Rhyparochromus littoralis Dist.) an emerging field insect pest of groundnut in the Sudan Savannah Agro-ecological zone of Nigeria, field experiment was carried out over a period of five (5) years (2011 to 2016) in order to investigate the behavior of R. littoralis with the aim of developing a strategic control method for this insect pest. The...
April 2018
Mycorrhizal status of some indigenous tree species in the Takamanda rainforest, South West Region, Cameroon
A survey was carried out to determine the type of mycorrhizal association formed by trees within the different habitat types of the disturbed and undisturbed sites of the Takamanda rainforest. Forty-eight tree species of commercial and cultural importance were selected from the two sites for this study. Root samples were collected from a total of 327 individual trees belonging to the 48 species; they were cleared,...
February 2018
Vegetation studies of Non-Timber Forest Products (NTFPs) at three sites with varying levels of anthropogenic disturbances in the Southern Bakundu Forest Reserve, Cameroon
A study was carried out to evaluate the distribution, abundance and diversity of Non-Timber Forest Products (NTFPs) in the Southern Bakundu Forest Reserve at the northern (Diffa), western (Bai Manya) and eastern (Mbalangi) parts of the reserve. NTFPs can be used as source of food, medicine, fuel wood and other socio-economic and cultural uses. Six belt-transects were use at each site to assess the distribution,...
February 2018
Species composition and relative abundance of medium and large mammals in Mengaza communal forest, East Gojjam, Ethiopia
Studies on the species composition, relative abundance and distribution of medium and large mammals were carried out from August 2015 to July 2016 in Mengaza communal forest. Data were collected using line transect technique. A total of twelve species of medium and large mammals were identified and recorded in the study area. Rock hyrax (Procavia capensis), porcupine (Hystrix cristata), honey badger (Mellivera...
January 2018
Determinants of vegetation type patch dieback in a semi-arid area, Tutume Sub-District, Botswana
Patch dieback of Colophospermum mopane (Kirk ex Benth.) Kirk ex J. Léonard, which was attributed to drought, soil surface condition and soil chemistry has been reported in South Africa. In Botswana, dieback of C. mopane and other species were noticed in 2012 in the North east part of the country (North West of Francistown). The causes of the noticed dieback were not known. The objective of this study was to...
January 2018
Litterfall dynamics in Boter-Becho Forest: Moist evergreen montane forest of Southwestern Ethiopia
Litterfall in the forest is essential for balanced ecosystem processes. The present study determined seasonal variations of litterfall in the Boter-Becho forest, Southwestern Ethiopia. Based on forest disturbance level, two sites were selected: Low and high. Litterfall production in the high and low disturbed forest sites averaged 6.6 and 10.8 t ha-1 year-1, respectively. Significant differences (P<0.001) in...
December 2017
Assessing the impact of seasonality on Cross River Gorilla Nest Construction at Kagwene Gorilla Sanctuary, North-West Cameroon
The Cross River gorilla, one of the most endangered subspecies of western gorilla (Gorilla gorilla) is endemic to 12 to 14 sites at the Cameroon-Nigeria border, where it is facing enormous threats from habitat loss, bush meat trade and minor climate changes (seasonal changes). In a strive to reduce the enormous stressors on this subspecies, this study assesses the impact of seasonality on nest construction by Cross...
November 2017
Socioeconomic Factors that determine community participation in forest management and conservation of adjacent ecosystems: A case of Aberdare forest, Kenya
Forest ecosystems are important to ecological, economic and social wellbeing, particularly for the adjacent communities who depend on it. Understanding the socioeconomic dynamics that make households choice to be involved in forest conservation is crucial for sustainable management of natural resources. This study therefore examined the socioeconomic factors that influenced households’ participation in forest...
September 2017
Assessing and mapping ecosystem services of trees outside forest
The overall objective of the study was to map trees outside forest (TOF) in croplands, and their contribution to the supply of ecosystem services for local and national beneficiaries using participatory research, Google Earth and ArcMap in Ghana, as the case study area. A satellite image available from Google Earth was used to map croplands, and ArcMap was used to calculate the local and national ecosystem service...
August 2017
Fuel wood utilization impacts on forest resources of Gechi District, South Western Ethiopia
Fuel wood remains the main energy source for the majority of the people in Gechi District of South Western Ethiopia. As compared to the situation in the past, the forest cover is now generally very sparse in the densely populated areas where rapid rates of deforestation and forest degradation have occurred due to the heavy demand on forest products, mainly fuel wood. Therefore, this study was conducted with the...
July 2017
Comparison of waterbird species composition and habitat characteristics of two different wetlands of Malaysia
Waterbird species composition and habitat characteristics at two ecologically different wetlands (Paya Indah and Putrajaya) were compared in order to determine the habitat suitability of each particular habitat for waterbird species. A total of 30 waterbird species representing 10 families were recorded through direct observation in both wetland habitats (26 waterbird species in Paya Indah and 22 species in Putrajaya...
July 2017
Regional Glacier recession: An indicator of global warming, a study of Kolahoi Glacier (Liddar Valley), Western Himalayas
Since the beginning of twentieth century, mountain glaciers have generally experienced worldwide retreat and thinning in response to ~0.74°C increase in global mean surface temperature. Consequently, additional fresh water is released from glacier storage that modifies current stream flow regimes. Water resources play a key role in the sustainable development of human activities and for preserving the ecological...
June 2017
Deforestation, biodiversity and biomass losses in Kribi deep sea port area (Cameroon): Some mitigating measures
This study is part of the environmental impact assessment realised in the deep sea port area of Kribi. Floristic inventory and diversity assessments were necessary to understand the species composition and diversity status of forests, trees biomass and investigate the potential impact of the project. Floristic analysis shows a high Shannon diversity index (5.3), indicating a rich and diverse flora composed of 83...
June 2017
Managing mangroves for coastal ecosystems change: A decade and beyond of conservation experiences and lessons for and from west-central Africa
Unsustainable human activities and climate change are threatening the sustainability of coastal ecosystems in countries of West-Central Africa. This paper advocates that focusing on mangrove ecosystem management can potentially mitigate these threats by pointing out clues on management orientations and opportunities for other coastal systems. This article elucidates this point by using evidence from informal interviews...
May 2017
Environmental education and ecotourism using termitaria research findings: A case study of Pendjari reserve, Benin
Findings are available on termitaria and their vegetation in the Pendjari Biosphere Reserve and other Sudanian regions in West Africa, but research without dissemination and impacts on communities seems not to be useful. This work aims at providing non-governmental organization (NGOs) and forestry advisers with useful data for environmental education projects and taking termitaria and their vegetation into account...
May 2017
Diversity and abundance of insect pests of corn (Zea mays Poaceae) grown in a rural environment in the city of M’Bahiakro (East Central Côte d’Ivoire)
Knowledge of the distribution of insect pests of corn at different stages of the plant is essential for the development of appropriate control strategies. This work was carried out in a rural environment in M’Bahiakro, in East Central Côte d’Ivoire. The study of dynamics, biodiversity and insect abundance on each plot was carried out. For this purpose, six plots, of which two were in the forest zone...
April 2017
“Diet analysis of the African clawless otter (Aonyx capensis) in and around Lake Tana”
The diet composition of the African clawless otter (Aonyx capensis) was studied by analyzing of 440 spraint samples collected during January, 2014 and December, 2015 in both dry and wet seasons from eight sites in and around Lake Tana, North West Ethiopia. Percentage frequency of occurrence and relative percentage frequency of diet items in the spraint samples were calculated.The statistical analysis was conducted using...
April 2017
A survey on species diversity, abundance and community structure of woody plants in burial sites in Gobeya Rural Administrative of Tehuledere District, South Wollo, Ethiopia
Tropical forests generally host high biodiversity and are important sources of ecological, socio-cultural and economic services. There are also many sacred forests in many parts of the world, including burial sites in Gobeya rural administrative, having a significant ecological and socio-economic value. This study aims to quantify species diversity, abundance and vegetation structure, and also to determine the...
March 2017
Ecological risk assessment of heavy metals and water bird distribution in rift valley lakes, Kenya
The study was carried out in six Kenyan rift valley lakes, Nakuru, Magadi, Oloiden, Crater (Sonachi), Bogoria and Elementaita with the aim to determine the levels of heavy metals and other metal elements (Co, Mn, Zn, Cu, Cr, Cd, Pb, Ni, Hg and As) in water and sediment samples as well as assess its association with water bird distribution. High levels of Pb (42 ppm) above the Pb benchmark levels (36 ppm) as per...
Page 1 of 8, showing 50 records out of 361 total, starting on record 1, ending on 50
