African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1071

AJEST Articles

Spatio-temporal variations in phytoplankton community structure in small water bodies within Lake Victoria basin, Kenya

September 2013

  Spatio-temporal variations of phytoplankton, expressed in terms of species composition and diversity collected at various sampling sites in small water bodies (SWBs) within Lake Victoria basin, Kenya, were investigated monthly from November 2010 to June 2011, in relation to selected physical and chemical water quality parameters. Temperature, D.O, TN and TP revealed a significant difference between the dams...

Author(s): Steve O. Ngodhe, Phillip O. Raburu, Boaz K. Arara, Patrick O. Orwa and Alfred A. Otieno

Comparative analysis of municipal solid waste (MSW) composition in three local government areas in Rivers State, Nigeria

September 2013

Rivers State is one of the major oil producing States in Nigeria. Its capital, Port Harcourt and sub-urban areas have witnessed an increased influx of migrants in recent time. Consequently, the consumption of goods and services has also increased leading to generation of unprecedented quantities of municipal solid waste. Previous efforts by relevant authorities to contain this increase in waste generation have proved...

Author(s): Babatunde B. B., Vincent-Akpu I. F., Woke G. N., Atarhinyo E., Aharanwa U. C., Green A. F., Isaac-Joe O.

Unusual rainfall shift during monsoon period of 2010 in Pakistan: Flash flooding in Northern Pakistan and riverine flooding in Southern Pakistan

September 2013

  Floods due to “blocking event” in the jet stream during 2010 caused intense rainfall and flash floods in northern Pakistan which resulted to riverine flooding in southern Pakistan. In the beginning of July 2010, changes in summer monsoon rainfall patterns caused the most severe flooding in Pakistan history. Process control charts suggest that monsoon pattern was not normal which made one-fifth of...

Author(s):   Muhammad Arslan,, Muhammad Tauseef, Mehtab Gull, Mujtaba Baqir, Iftikhar Ahmad, Usman Ashraf and Bassam Shafiq Al-Tawabini

The impacts of auto-mechanic workshops on soil and groundwater in Ibadan metropolis

September 2013

  The extents of groundwater and soil pollution arising from auto-mechanic activities from auto-mechanic workshops at Ibadan metropolis were examined. Groundwater and top soil samples from auto-mechanic villages and control site were collected fortnightly over a period of two months and analysed for both physicochemical parameters and some heavy metals. Results of physicochemical parameters of groundwater...

Author(s): ADEWOYIN, O. A., HASSAN, A. T. and ALADESIDA, A. A.

Generation of electronic waste in India: Current scenario, dilemmas and stakeholders

September 2013

  This paper tries to quantify the amount of E-waste generated in India with the related stakeholder involvement. Electronic waste (E-waste) or waste electrical and electronic equipments (WEEE), which is relatively a recent addition to the hazardous waste stream, is drawing rapid attention across the globe as the quantity being generated is rising rapidly. All electrical and electronic equipments (EEE), on...

Author(s): Anwesha Borthakur and Kunal Sinha

Human health risk characterization of lead pollution in contaminated farmlands of Abare village, Zamfara State, Nigeria

September 2013

        This study was initiated to assess the level of lead (Pb) contamination in farmlands, crop plants and water sources and the health risk in one of the Pb-contaminated villages of Zamfara State. Soil samples were collected from two depths at intervals of 10, 50, 150, 300, 500 and 1000 m from the last house along each of the four cardinal directions (North, South, East and West). Crop...

Author(s): N. Abdu and A.A Yusuf

Heavy metal levels in soil samples from highly industrialized Lagos environment

September 2013

        The effect of heavy metals on the environment is of serious concern and threatens life in all forms. Environmental contamination is correlated with the degree of industrialization and intensities of chemical usage. The aim of this study was to determine to what extent, human and industrial activities have affected the quality of soil due to contamination of soil with heavy metals and...

Author(s): Chimezie Anyakora, Teddy Ehianeta and Oghenetega Umukoro

Sublethal effects of cadmium, manganese, lead, zinc and iron on the plasma electrolytes regulation of mice, Mus Musculus

September 2013

        The toxicological evaluations of cadmium, iron, manganese, lead and zinc were carried out against albino mice model, Mus musculus. On the basis of 96 hrLC50 value, cadmium (0.47 mM) was found to be the most toxic followed by zinc (2.40 mM), lead (2.42 mM), iron (4.25 mM) and manganese (5.70 mM) was least toxic. This study also evaluated the sublethal effects of cadmium, manganese,...

Author(s): Osuala, Fidelia Ijeoma, Otitoloju, Adebayo Akeem and Igwo-Ezikpe, M. N.

Planning a functional city centre in a physiographic constrained landscape: A case study of Lokoja, Nigeria

August 2013

  The city centre planning and redevelopment in developing cities, the location, function and physical form of such cities notwithstanding often remain the hardest planning proposal to be accomplished by any planning endeavour. The magnitude of this problem has been linked to the origin and locations of many settlements especially those associated with poor relief environment which later poses numerous planning...

Author(s): Simon, R. Funsho, Adewale Bukola and Fulani Omoyeni

Sustainable development in a developing economy: Challenges and prospects

August 2013

  Sustainable development implies development which ensures maximization of human well being for today’s generation which does not lead to declines in future well being. Attaining this path requires eliminating those negative externalities that are responsible for natural resource depletion and environmental degradation. All human activities and developmental projects are associated with environmental...

Author(s): P. C. Okonkwo

An appraisal of the of eco-climatic characteristics in Northern Nigeria

August 2013

        The character of the sub-regional eco-climatic zones has possibly changed as suggested in the dwindling fortune of agricultural productivity, documented changes in vegetation and freshwater resources and rising poverty levels especially in the hitherto productive Northern Nigeria. To determine and map the changes, if any, in these eco-climatic characteristics is therefore important...

Author(s): AbdulKadir A., Usman M. T., Shaba A. H. and Saidu S.

Exploring opportunities for climate change adaptation in semi arid areas of Tanzania: A case of Nzega District in Tabora region

August 2013

  Climate change and associated impacts are now widely acknowledged by most communities, institutions and organizations in the World to be affecting people’s livelihoods. The University of Dar es Salaam in Tanzania through the Institute of Resource Assessment (IRA) implemented a three years research program to study the implications of climate change on natural and social systems in three agro ecolocilal...

Author(s): Majule, A. E., Kauzeni, A. S and Mujwahuzi, M.

Nature and dynamics of climate variability in the uganda cattle corridor

August 2013

        The study was conducted in the districts of Nakaseke and Nakasongola stratified into four farming systems of crop dominancy, pastoralists, mixed crop and livestock and fishing. The study was guided by two research questions: (1) how do community residents perceive climate change/variability? (2) What is the trend and nature of climate variability and how does it compare with...

Author(s): Nimusiima Alex, Basalirwa  C. P. K., Majaliwa J.G.M, Otim-Nape  W. , Okello-Onen J., Rubaire-Akiiki C., Konde-Lule J. and Ogwal-Byenek S.

Integration of hydro-climatic data and land use in neural networks for modeling river flows: Case of Lobo river in the southwest of Cote d’ivoire

August 2013

  In a context of climate disruption due to uncontrolled human activities, the classical models of rainfall-runoff modeling are almost unusable. In addition on the Lobo River (Southwest of Côte d’Ivoire), no simulation study has been carried out yet despite that, this river has flooded fields and villages causing huge losses in September 2007. Neural networks appear in this case as a solution for...

Author(s): Yao Blaise KOFFI, Kouassi Ernest AHOUSSI, Amani Michel KOUASSI, Ouattara KOUASSI, Loukou Christophe KPANGUI and Jean BIEMI

Antimicrobial activity of earthworm (Eudrilus eugeniae) paste

August 2013

        Earthworm plays a major role in the proper functioning of the soil ecosystem. It acts as scavenger and helps in recycling of dead and decayed plant material by feeding on them. Earthworm increases the soil fertility and is often referred to as a farmer’s friend. Earthworms have been used in medicine for various remedies. The paste prepared from earthworm, Eudrilus eugeniae was...

Author(s): K. Vasanthi, K. Chairman and A. J. A. Ranjit Singh

Evaluation of effect of Ophiostoma novo-ulmi on four major wood species of the elm family in Rasht (North West of Iran)

August 2013

  Dutch elm disease is the most common and destructive disease of the elm family. The pathogen of Ophiostoma novo-ulmi will systematically lead to the blockage of xylems and cavities, and will finally lead to the development of wilt symptoms. The present study aimed to compare the diameter size of vessels and the number of xylary rays in four species: Ulmus carpinifolia, Ulmus glabra, Zelkova carpinifolia and...

Author(s): Shaghayegh Zolghadry, Mehrdad Ghodskhah Daryaee and Javad Torkaman

Copepoda parasites in economically important fish, Mugilidae (Mugil cephalus and Liza falcipinnis from Lac Nokoue Lagoon in Republic of Benin, West Africa

August 2013

  Fish parasitology is an indispensable tool in aquatic health studies and a basic understanding of richness of a community parasitism in many localities is essential for instituting control. Many copepod parasites are ecto-parasites which negatively affect the appearance and reduced production of species of economically important fish, both from the wild and fish farms, thus making them difficult to market. In...

Author(s): Nike F. Aladetohun, Nestor G. Sakiti and Emmanuel E. Babatunde

The relative contributions of climatic elements and environmental factors to flooding in Awka urban area

August 2013

        The aim of this paper was to determine the relative contributions of climatic elements and environmental factors to urban flooding in Awka urban area of Anambra State. Towards achieving this aim, 10 year (2000-2009) meteorological data of temperature and rainfall of the study area were collected from synoptic meteorological station in Awka and data on environmental factors were...

Author(s):   E. E. Ezenwaji, A. C. Okoye and A. K. Awopeju

Ambient air pollution and assessment of ozone creation potential for reactive volatile organic compounds in urban atmosphere of southwestern, Nigeria

August 2013

  Volatile organic compound (VOC) species react at different rate and exhibit differences in reactivity with respect to ozone formation in polluted urban atmosphere. To assess this, the variations pattern, reactivity relative to OH radical and ozone creation potential of ambient VOCs were investigated in field studies at designated sites in urban centers of Akure and Ado-Ekiti, Southwestern, Nigeria, between...

Author(s): Olumayede E. G. and Okuo J. M.

A comparative study on Pb2+ removal efficiencies of fired clay soils of different particle size distributions

August 2013

        Batch adsorption studies were carried out to evaluate the Pb2+ adsorption capacities of three different fired clay soils with different particle size distributions. Adsorption efficiency was observed to increase with an increase in clay content. Adsorption efficiencies of the fired clay soils were also influenced by the firing temperature, the solution’s acidity, initial Pb2+...

Author(s): Dejene A. Tessema and Dessalew D. Alemayehu

Heavy metal levels in Sokoto metropolis as a result of local production of aluminium utensils

August 2013

  Assessment of the levels of heavy metal pollution due to production of local aluminum articles have been carried out. Atomic absorption spectrophotometric method of analysis was used for the determination of Cu, Cd, Cr, Fe, Mn and Pb, while ethylenediaminetetraacetic acid (EDTA) back titration with ZnSO4 was used for Al. Results show that the various concentration obtained follows the order, Al > Cu >...

Author(s): A. U. Cheche, U. A. Birnin-Yauri, C. Muhammad and A. Umar

Nitrogen mass balance in waste stabilization ponds at the University of Dar es Salaam, Tanzania

August 2013

  Nitrogen mass balance in waste stabilization pond system at the University of Dar es Salaam was determined using a dynamic mathematical model in order to elucidate the biological nitrogen transformation mechanisms that are effective for removal of nitrogen in this pond system. Results show that the pond system removed 4741 g/day of nitrogen from an influent load of 8036 kg/day, which is equivalent to 59%...

Author(s): Aloyce W. Mayo

Impairment in biochemical indices in sprayers exposed to commonly used organophosphorus and pyrethroids: A case study

August 2013

        This study was carried out to evaluate the effect of spraying organophosphate, carbamate and synthetic pyrethroid pesticides on biochemical parameters viz., red blood cell (RBC) acetylcholine esterase (AchE) and plasma butyrylcholinesterase (BChE) activities, oxidative stress parameters viz.,  plasma T-BARs, catalase activity and antioxidant levels such as reduced glutathione,...

Author(s): Padmaja R. Jonnalagadda, A. Y. E. Prasad, U. V. R. Vijaya Sarathi,  G. Manohar and K. Venkaiah

Heavy metal pollution in drinking water - a global risk for human health: A review

July 2013

       Water resources in the world have been profoundly influenced over the last years by human activities, whereby the world is currently facing critical water supply and drinking water quality problems. In many parts of the world heavy metal (HM) concentrations in drinking water are higher than some international guideline values. Discussing about the HM pollution in drinking water, the...

Author(s): Fabián Fernández-Luqueño, Fernando López-Valdez, Prócoro Gamero-Melo, Silvia Luna-Suárez, Elsa Nadia Aguilera-González, Arturo I. Martínez, María del Socorro García-Guillermo, Gildardo Hernández-Martínez, Raúl Herrera-Mendoza, Manuel Antonio Álvarez-Garza and Ixchel Rubí Pérez-Velázquez

A study of valuation clients perception on mortgage valuation reliability

July 2013

The effect of overvaluation and undervaluation cannot be over emphasized in any economy. Valuation opinions are very crucial to the operations and business dealings of the clients that seek valuer’s advice in decision making. Wrong opinion of value has caused strain in many business dealings. This paper studies the perception of clients on reliability of mortgage valuation in Nigeria. A sample size of 50 lending...

Author(s): Adegoke O. J. Olaleye A. and Oloyede S. A.

Community-environment relations and development of rural communities in Uyo, Nigeria

July 2013

  Primary production activity and environmental resources hold the key to rural development. The range of activities in primary production forms the basis with which rural communities relate with the environment and carry out rural development activities. This study examined the interactions in man-environment system and how such interactions could affect development processes. A multistage sampling framework...

Author(s): Ikurekong, E. E. and Atser Jacob

Ecosystem recovery analysis of mine tailings at Mhangura copper mine through normalised difference vegetation index

July 2013

Remote sensing techniques are increasingly being employed in monitoring environmental change. Vegetation indices such as normalised difference vegetation index (NDVI), are useful in estimating primary production, an important component of ecosystem function. The success of rehabilitation on mine tailings may be indirectly assessed through NDVI changes. Mine tailings at Mhangura copper mine, Zimbabwe, have not been...

Author(s): Gregory M. Dowo and Shakkie Kativu

Multi-temporal assessment of forest cover, stocking parameters and above-ground tree biomass dynamics in Miombo Woodlands of Tanzania

July 2013

  Miombo woodlands form the widespread ecosystem in Tanzania. The ecosystem of these woodlands serves as a carbon sink and source containing majority of the above-ground terrestrial organic carbon. The study assessed forest cover, stocking parameters and above-ground tree biomass dynamics in the Miombo woodlands of Bereku and Duru Haitemba in Tanzania. The data were obtained from conventional forest inventory...

Author(s): Almas Kashindye, Elifuraha Mtalo, Mathew M. Mpanda, Evaristo Liwa and Richard Giliba

Variations in the physico-chemical properties of Dal Lake, Srinagar, Kashmir

July 2013

  Basic physical and chemical characteristics of the water in Dal lake Srinagar were determined. Surface water was sampled on monthly basis from June 2010 to April 2011. To determine the variations in physico-chemical parameters of Dal lake, a total of 21 physico-chemical parameters from six different site spread in four basins of lake was monitored. Our findings highlighted the deterioration of water quality...

Author(s): Basharat Mushatq, Rajni Raina, Tabasum Yaseen, Ashwani wanganeo  and A. R. Yousuf

Effect of rainfall on cropping pattern in mid Himalayan region

July 2013

  The analysis of effect of rainfall during the last 20 years is needed to evaluate cropping pattern in the rain-fed region. In this study, trends in annual, seasonal and monthly rainfall of district of Himachal Pradesh in India over the past 20 years were examined.  The annual rainfall varies from 863.3 to 1470.0 mm. During the summer season, the highest total rainfall was 1089.7 mm during 2000, whereas...

Author(s): R. K. Aggarwal

Heavy metal characteristics of groundwater in Ibadan South Western, Nigeria

July 2013

    Full Length Research Paper   Heavy metal characteristics of groundwater in Ibadan South Western, Nigeria   Laniyan, T. A.*, Bayewu, O. O. and Ariyo, S. O.   Department of Earth Sciences, Olabisi Onabanjo University, Ago-Iwoye, Nigeria.   *Corresponding...

Author(s): Laniyan, T. A., Bayewu, O. O. and Ariyo, S. O.

Nitrate and ammonium levels of some water bodies and their interaction with some selected properties of soils in Douala metropolis, Cameroon

July 2013

       The present study examined the nitrate (NO3-) and ammonium (NH4+) levels of Rivers Wouri and Dibamba and some streams that feed them. The interaction of NO3- and NH4+ with some soil properties was also investigated. It was necessitated by the usage of these rivers for livelihood, despite the deposition of discharges into these streams. Twenty eight (28) surface water and four soil...

Author(s): Aaron Suh Tening, George Bindeh Chuyong, Godswill Azinwie Asongwe, Beatrice Ambo Fonge, Lydia Likowo Lifongo and Beatrice Ketchemen Tandia

Assessment of oil contamination in the bay of Porto Grande (Cape Verde) using the mullet Chelon bispinosus

July 2013

  Polycyclic aromatic hydrocarbons (PAHs) are a group of persistent organic pollutants, some of which are mutagenic and carcinogenic so PAH concentrations in fish used for human consumption are crucial to assess impact to human health. Total PAH concentrations in muscle and liver of mullets Chelon bispinosus from the Bay of Porto Grande (Cape Verde) (four sites in the bay and a control) ranged from 112.7 to...

Author(s): N. Pinheiro, L. Barreira, B. Lopes and M. J. Bebianno

Application of the biosurfactants produced by Bacillus spp. (SH 20 and SH 26) and Pseudomonas aeruginosa SH 29 isolated from the rhizosphere soil of an Egyptian salt marsh plant for the cleaning of oil - contaminataed vessels and enhancing the biodegradation of oily sludge

July 2013

During the screening for biosurfactant-producing bacteria isolated from the rhizosphere soil of an Egyptian salt marsh plant, three bacterial strains (Bacillus spp. SH 20 and SH 26, and Pseudomonas aeruginosa SH 29) were most active strains. Biosurfactants produced by the three bacterial strains were stable at wide range of pH (1 to 14), wide range of temperature (0 to 121°C) and salinity (5 to 15% NaCl). The two...

Author(s): Ali Diab and Shereen Gamal El Din

Positions of human dwellings affect few tropical diseases near Baghdad city, Iraq

July 2013

  Some factors that possibly affect tropical disease distribution was investigated in about 500 randomize human dwellings. The studied factors include wild animals, domestic animals, wild plants, cultivated plants, nature of soil, nature of water, positions of human dwellings, nature of building material and position of animal shelters. The diseases that studied were malaria, Kala-azar (visceral leishmaniasis),...

Author(s): Shihab A. SALMAN, Mohammed J. AL-OBAIDI and Fadhaa O. SAMEER

Evaluation of polybrominated diphenyl ethers in sediment of Lagos Lagoon, Nigeria

July 2013

        Certain pollutants, particularly synthetic organic compounds have given rise to important environmental concerns. New organic pollutants especially polybrominated diphenyl ether (PBDEs) employed in electronic equipment and in some household items as flame retardants are now finding their way into the aquatic environment as components of waste discharge into the water body. These...

Author(s): Adewuyi, G. O. and Adeleye, A. O.

Rate of absorption and interfacial area of chlorine into aqueous sodium hydroxide system

July 2013

  Due to excellent mass transfer characteristics with energy efficiency jet ejectors can be used in place of conventional countercurrent systems, namely, packed bed contactors as well as venturi scrubbers, cyclones and airlift pumps. The removal of chlorine from certain gases by absorption in aqueous solutions of sodium hydroxide is industrially important in several chemical processes particularly in pollution...

Author(s): K. S. Agrawal

Nitrate concentration in drinking water supplies in selected communities of Ibadan Southeast local government, Ibadan, Nigeria

July 2013

Elevated levels of nitrate in drinking water have been associated with adverse health effects. Most susceptible to nitrate toxicity are infants under six months of age and pregnant women. This study assesses the nitrate concentration of 48 randomly selected wells in an urban-slum setting in Ibadan South East Local Government Area (IBSELGA), Nigeria. The coordinates of the wells were mapped with a hand-held Global...

Author(s): Elizabeth O. Oloruntoba, Mynepalli K. C. Sridhar, Ramon T. Alabi and Stephen  A. Adebowale

Knowledge, attitudes and practices study of dengue viral infection and its association with environmental factors and health issues, Lahore Pakistan

July 2013

        This study was designed to assess and compare the awareness, approach, and practices of dengue positive and dengue negative patients regarding dengue fever in a tertiary care hospital of Lahore district, Pakistan from April to May 2012. A total of 250 samples (125 dengue positive and 125 dengue negative) were collected and tested for Dengue IgM and IgG antibodies test by ELISA...

Author(s): Mariam Zameer, Maryum shuja, Arooj Ashraf, Nadia Mukhtar and Bilal Munir Ahmad

The economic cost of air pollution in Mangaung metro municipality: A case study in South Africa

July 2013

Economic and domestic activities have been causing a profound deterioration of air quality in developed and developing countries. The health problems arising from air pollution have become apparent which result in welfare losses in society such as increased workdays lost and high health cost. This study shows the mitigating cost and workdays lost as a result air pollution related illness and the factors influencing...

Author(s): Israel-Akinbo Sylvia Olawumi, Nicky Matthews, Henry Jordaan and Godfrey Kundhlande,

The effect of pesticides on fish fauna of Bhopal lower lake (M. P.)

July 2013

The analysis of effect of rainfall during the last 20 years is needed to evaluate cropping pattern in the rain-fed region. In this study, trends in annual, seasonal and monthly rainfall of district of Himachal Pradesh in India over the past 20 years were examined.  The annual rainfall varies from 863.3 to 1470.0 mm. During the summer season, the highest total rainfall was 1089.7 mm during 2000, whereas lowest...

Author(s): Mukesh Kumar Napit

Appraising the combustion of biogas for sustainable rural energy needs

June 2013

This paper shows the combustion of biogas in rural households’ appliances. Biogas has been known since 1800s as an odourless and colourless gas with high combustion rate. Its use is beginning to gain ground in most developing countries like Nigeria due to its availability, ease of generation and environmental friendliness. Developing countries are characterized by poor infrastructural development, inadequate...

Author(s): A. M. Stanley, D. M. Stanley, Dadu, D. W. and A. M. Abah

Transesterification of oil extracted from different species of algae for biodiesel production

June 2013

  In the current study, biodiesel production efficiency of Chlorella vulgaris, Rhizoclonium hieroglyphicum and mixed algae culture was measured by transesterification process. Growth rate of algal species was measured on the basis of increase in their dry matter in various media. Protein, carbohydrates and lipids in all selected algae were measured on dry matter basis....

Author(s): Farooq Ahmad, Amin U. Khan and Abdullah Yasar

An application of Geographic Information System in mapping flood risk zones in a north central city in Nigeria

June 2013

  This study deals with the application of Geographic Information Systems (GIS) in mapping flood risk zones in Makurdi Town. This study draws its relevance from the importance of a GIS database in tackling flood related problems. To create a map of flood risk zones in Makurdi town, the ArcView GIS package was used to digitize a topographic map and other relevant themes of the study area. Through GIS overlay and...

Author(s): Abah Roland Clement

Variations in the mineral composition and heavy metals content of Moringa oleifera

June 2013

  The parts of Moringa oleifera were assessed for mineral composition and some heavy metal contents in this study, which included Ca, Mg, K, Na, Mn, Fe, Zn, Co, Se, Pb and Cd. Parts of the plant were obtained from Badagry in Lagos State, Nigeria. The samples were digested with HNO3 and analysed for the mineral element content using atomic absorption spectrophotometer. The observed mean...

Author(s): Fakankun, O. A., Babayemi, J. O. and Utiaruk, J. J.

The logistic model-generated optimal stocking levels, optimal species mix and carrying capacity of wild herbivores in southern rangelands game ranches in Kenya

June 2013

  This paper derives logistic models for Grant's gazelle Gazella granti, Thompson's gazelle(Gazella Thompsonii) and plains Zebra (Equus burchellii), in a game ranching system. The study was conducted on an 8100 hectares savannah ecosystem in Machakos district, with an average annual rainfall of 514±159.3 mm. Modelled as discrete-time logistic equations with fixed carrying...

Author(s): P. I. D Kinyua, J. T. Njoka and Chris O. Magero

Harmonisation of physical and chemical methods for soil management in Cork Oak forests - Lessons from collaborative investigations

June 2013

  As part of a collaborative project to investigate human impacts on Quercus suber L. (cork oak) forests, five research groups from countries in Europe and North Africa undertook a survey of soil quality (physical properties, potentially toxic elements) at sites in NW Tunisia and NW Sardinia. All groups performed the analysis of soil samples after agreeing prescribed methodologies to ensure...

Author(s): Iain McLellan, Adélia Varela, Mohamed Blahgen,  Maria Daria Fumi, Abdennaceur Hassen, Nejla Hechminet, Atef Jaouani, Amel Khessairi, Karim Lyamlouli, Hadda-Imene Ouzari, Valeria Mazzoleni, Elisa Novelli, Agostino Pintus, Càtia Rodrigues, Pino Angelo Ruiu, Cristina Silva Pereira and Andrew Hursthouse

Food items and general condition of Hyperopisus bebe occidentalis (Lacepede, 1803) caught in Warri River, Nigeria

June 2013

  A total number of 202 specimens, comprising 75 females and 127 male specimens ofHyperopisus bebe occidentalis were caught from Warri River. This gave a 1:1.7 female to male sex ratio. The total length range for male specimens was 189.2 to 355.0 mm and 246.0 to 376.1 mm for females. The body weight range for male specimens was 51.0 to 448.0 g, while that recorded for female specimens was 106.0 to 400.0 g....

Author(s): Olele, N. F.

Public perception of ecosystem service functions of peri - urban forest for sustainable management in Ogun State

June 2013

  Forest ecosystems and landscapes are under strong and multiple pressures that challenge their capacities to continue to deliver the many and critical environmental goods and services that all life systems require. This study was therefore carried out to evaluate public perceptions on the ecosystem services (ES) of Arakanga Forest Reserve in order to provide relevant information for successful initiatives...

Author(s): Adekunle, M. F., Agbaje, B. M. and Kolade, V. O.

Ecohydrological characterization of the Nyando wetland, Lake Victoria, Kenya: A State of System (SoS) analysis

June 2013

  Lake Victoria floodplain wetlands have a complex hydrological setting characterized by...

Author(s):   P. S. Khisa,, S. Uhlenbrook, A. A. van Dam, J. Wenninger, A. van Griensven and M. Abira

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