Journal of
Ecology and The Natural Environment

  • Abbreviation: J. Ecol. Nat. Environ.
  • Language: English
  • ISSN: 2006-9847
  • DOI: 10.5897/JENE
  • Start Year: 2009
  • Published Articles: 394

JENE Articles

Predictive modelling of the distribution of two critically endangered Dipterocarp trees: Implications for conservation of riparian forests in Borneo

September 2013

Riparian forests of Malaysian Borneo exhibit high tree species diversity. However, many of the tree species found in these riparian forests are conservation dependant, with their current conservation status (sensu IUCN Red List) varying from vulnerable to critically endangered. The present study had two objectives. Firstly, to identify the environmental factors associated with the distribution of two critically...

Author(s): Minerva Singh

Reproductive aspects of common carp (Cyprinus carpio L, 1758) in a tropical reservoir (Amerti: Ethiopia)

September 2013

The reproductive aspect of common carp (Cyprinus carpio L, 1758) in the Amerti reservoir (9°.63’ N, 37°. 23’ E) was studied monthly between August 2011 and July 2012. A total of 496 specimens, comprising 231 males and 265 females were captured during the sampling period. There were no significant differences between the sex ratio (c2 = 2.33; P= 0.126). The mean ±...

Author(s): Mathewos Hailu

Ecophysiological influences of zeolite and selenium on water deficit stress tolerance in different rapeseed cultivars

September 2013

This experiment was carried out to study the ecophysiological influences of zeolite and selenium on water deficit stress tolerance in different rapeseed cultivars at Karaj, Iran using a factorial-split-plot design with three replications during 2009 - 2010. The main-plot factors included: irrigation regimes (control and irrigation interrupted during the flowering stage), zeolite (non-application and 10 ton/ha)...

Author(s): Sayed Alireza Valadabadi, Amir Hossein Shiranirad and Hossein Aliabadi Farahani

Long-term changes in soil-based ecological services at three sites in Ethiopia

August 2013

Ethiopia faces land degradation as one of its major environmental problems. In response to the degradation, massive land rehabilitation and conservation activities have been undertaken since the mid-1970s. In spite of these efforts, the impacts of long-term land management have not been examined from soil-based ecological services perspective. This study assesses soil-based ecological services over the past 30 years...

Author(s): Abebe Shiferaw, Hans Hurni and Gete Zeleke

Status of the Sondu-Miriu River fish species diversity and fisheries: Sondu-Miriu Hydro-Power Project (SMHPP) operations

August 2013

The Sondu-Miriu Hydroelectric Power Project (SMHPP) is a run-of-the-river hydro-power project on the Sondu-Miriu River, Kenya. The part of the river studied: between the Sondu Bridge upstream, and Osodo Bay on L. Victoria, was divided into three zones; 1. Upstream of the dam, artificial lake approximately 5 km long; 15 – 2 km wide, 2. Depleted section and, 3. Lower section. SMHPP caused part of river below the dam...

Author(s): Dickson Otieno Owiti, Raphael Achola Kapiyo and Esna Kerubo Bosire

Seasonal change effects on phenology of Argania spinosa (L.) in the fields

August 2013

We investigated the relationship between shoot branching, shoot growth, leaf phenology and seasonal changes during three consecutive seasons in three natural populations of Argania spinosa ((L.) Skeels) in south west Morocco. Rainfall showed two peaks in autumn and winter but summer was dry. Locality, climatic season, genotype (tree/locality) and observation date influence...

Author(s): Zahidi A, Bani-Aameur F and EL Mousadik A

Land use and vegetation cover dynamics in and around Kagoma Forest Reserve in Tanzania

August 2013

Kagoma Forest Reserve (KFR) is found in Kagera Region, Tanzania and is comprised of a large area of Miombo woodland. The extent of land use and vegetation cover changes in and around Kagoma Forest Reserve was investigated. Remote sensing and GIS techniques were used to analyze land use and vegetation cover changes over the past 23 years which revealed the occurrence of significant land use and vegetation cover...

Author(s): Nanjiva G. Nzunda, Pantaleo K. T. Munishi, Japhet J. Kashaigili, Geofrey E. Sokaand Joel F. Monjare  

The woodland tree Brachystegia floribunda facilitates the encroachment of forest tree species into miombo woodlands in northern Malawi

August 2013

Although, human activities have caused major losses of tropical forest, there are also reports of forest encroachment and expansion into surrounding sparse vegetation types (savannah and woodland). Large savannah-woodland trees may promote forest encroachment into their surroundings by facilitating seed deposition and subsequent establishment of forest species. This work sought to determine whether large individuals of...

Author(s): Tomohiro Fujita

The first report of preliminary list of the insect fauna of the Elkharaga city, New Valley, Egypt

July 2013

The present paper gives a preliminary account of the entomofauna of the New Valley. It has a complex composition; the species are a heterogeneous group with diverse distribution patterns. The account does not lay to completeness. It is chiefly based on the insects collected in a short period of time; it comprised 111 species in 95 genera, belonging to 53 families and pertaining to 13 orders namely: Coleoptera,...

Author(s):   Mohamed Abd El-moez Mahbob and Hamdy Hussien Mahmoud

Assessing community participation in selected ecotourism projects in the Brong-Ahafo Region, Ghana

July 2013

The purpose of this study was to examine the extent of community participation in selected Community-Based Ecotourism Projects in the Brong-Ahafo Region. The sample for the study was 281 respondents including 14 opinion leaders. Data were collected using questionnaires and interviews. The findings showed that residents were involved in the decision-making, implementation and monitoring of the...

Author(s): Yeboah Thomas

Temporal variations in water chemistry and chlorophyll-a at the Tomaro creek Lagos, Nigeria

July 2013

Temporal variations of the water chemistry and chlorophyll-a dynamics at the Tomaro creek Lagos were investigated for six months (October, 2007 to March, 2008). Temperature remained high (>27°C) all through the sampled period while total suspended solids andtransparency increased in the dry months. Total dissolved solids were high (≥8160 mg/L) between...

Author(s): Nwankwo, D. I, Adesalu, T. A, Amako, C. C, Akagha, S.C and Keyede, J. D.

Use of macroinvertebrate assemblage to assess the ecological integrity of Nyando Wetlands, Kenya

July 2013

This study aimed to investigate changes in macroinvertebrate assemblage within Nyando wetlands and developed an index of biotic integrity for monitoring human disturbances. Triplicate macroinvertebrate samples were collected monthly for seven months using a scoop net. They were sorted live, counted and identified to genus level. Water samples for nutrients were collected and analyzed using standard methods....

Author(s): Patrick Oduor Orwa, Phillip Okoth Raburu, Julius Kipkemboi, Priscah Rongoei, Okeyo-Owuor J. B. and Steve Omari

Impacts of enclosures in rehabilitation of degraded rangelands of Turkana County, Kenya

July 2013

The role of enclosures in range rehabilitation was investigated through a case study at Kalatum in Turkana County where the use of enclosures and establishment of fodder species were demonstrated to the local communities in late 1980’s. However, documented information on the impact of enclosures is scanty. Rehabilitation impact was evaluated through ecological sampling in fenced and unfenced areas and...

Author(s): John N. Kigomo and Gabriel M. Muturi

Grazing management systems and their effects on savanna ecosystem dynamics: A review

June 2013

The savanna ecosystems support livestock production and livelihood of pastoral communities. The degradation of savanna ecosystems due to overgrazing had lead government commercializing communal grazing land to privately owned ranches. However, grazing policies in Southern Africa had recently been debated, and yet there are few studies comparing grazing management systems on ecological system. This article provides an...

Author(s): Olaotswe Ernest Kgosikoma, Witness Mojeremane and Barbra A. Harvie

Species composition and abundance of small mammals in Chebera-Churchura National Park, Ethiopia

June 2013

In this study, we investigated species composition and abundance of small mammals (rodents and insectivores) in the recently established Chebera Churchura National Park, in Ethiopia between 2010 and 2011. Two study grids were established in seven selected habitats. In each grid, forty-nine Sherman live traps were used to capture the small mammals. A total of 704 individuals were captured in 5488 trap-nights. Among them,...

Author(s): Demeke Datiko and Afework Bekele

Effect of crusher dust on floristic composition and biological spectrum in tropical grassland of Odisha, India

June 2013

An investigation was carried out to estimate the effect of crusher dust on floristic composition and biological spectrum in grassland of Odisha, India. The vegetation analysis was performed following standard procedures. The floristic survey of the study area, which includes natural as well as crusher unit affected sites, revealed the presence of 24 plant species distributed in 11 families representing a two storied...

Author(s): B. K. Tripathy, R. B. Mohanty, N. Mishra and T. Panda

Physico-chemical properties of soils in cool-temperate forests of the “Nanda Devi Biosphere Reserve” in Uttarakhand (India)

June 2013

The study area is very diverse due to its protectness on one hand and thus there is a vast scope of scientific study on the other hand. The parent material of the study area represents crystalline rocks and comprises of garnetiferous mica, schists, garnet mica and mica quartzite. The soil bulk density varies from 1.14 to 1.91 gm cm-3 under various soil depths ranging from 0 to 15, 15 to 30 and 30 to 45 cm. Whereas,...

Author(s): Tiwari S. D., Joshi Ritesh and Rawat Arjun

Habitat structure of flat-headed cusimanse (Crossarchus platycephalus) in Futa Wildlife Park, Ondo state, Nigeria

June 2013

The study explored the habitat structure of flat-headed cusimanse (Crossarchus platycephalus) in Federal University of Technology, Akure (FUTA) Wildlife Park, Ondo State. It was undertaken during both wet and dry seasons of the year 2012. In assessing the habitat, ten plots (10 x 10 m2 each) were marked out of the total land area of the Park. A total of fifteen (15) different species were...

Author(s): Oguntuase B. G. and Agbelusi E. A.

Possibility of species extinction in the periodical forced prey-predator model

May 2013

The response of the Lotka-Volterra system forced by periodical modulation was numerically simulated in a wide frequency range. The main question is: how does the change of environment A parameter influence the behavior of such a system? The answer to this question is the main purpose of this paper. In the resonance region, the oscillation of the system fits to the forced frequency (or its harmonics) and shows...

Author(s): Aldona Krupska

Population studies, habitat assessment and threat categorization of Polygonatum verticillatum (L.) Allioni in Kumaun Himalaya

May 2013

Natural populations of Polygonatum verticillatum in Kumaun Himalaya were surveyed for population studies, habitat assessment and threat status. This research reveals density of individuals and area occupied were low as compared to other species of the region, indicating habitat loss and heavy exploitation. Status was determined on a site-to-site basisfor the entire Kumaun region. Based on...

Author(s): Nidhi Lohani, Lalit. M. Tewari, Ravi Kumar, G. C. Joshi, Jagdish Chandra, Kamal kshore, Sanjay Kumar and Brij Mohan Upreti

Distribution and abundance of small mammals in different habitat types in the Owabi Wildlife Sanctuary, Ghana

May 2013

Information on the small mammal communities of the Owabi Wildlife Sanctuary is virtually non-existent despite their role in forest ecosystems. A total of 1,500 trap-nights yielded 121 individuals of rodents and shrews, comprising five species: Praomys tullbergi, Lophuromys sikapusi, Hybomys trivirgatus, Malacomys edwardsi and Crocidura buettikoferi, captured in Sherman traps using 20...

Author(s): Reuben A. Garshong, Daniel K. Attuquayefio, Lars H. Holbech and James K. Adomako

Institutionalizing environmental hazards for ‘public needs’: Destruction of forest for drinking water supply in Kerala, India

April 2013

Natural resource exploitation is increasingly being considered as a technical issue with the assumption that it can be compensated for. The public concern shifts towards such destruction only when it affects the normal course of day to day life. Immediate needs often undermine the process of institutionalizing knowledge to ensure conservation of natural resources. The question of immediate needs often acts as...

Author(s): S. Mohammed Irshad

Does shore length influence population size and density distribution of hippopotamus?

April 2013

Population surveys of common hippopotamus (Hippopotamus amphibius) in Zambia were carried out between 2005 and 2008 to estimate population size and density distribution patterns against shore length. River bank foot counts were used in the Luangwa River system while boat/canoe counts were used to collect population data from lakes, dams and rivers. Population estimate was 40,060 hippopotami distributed over...

Author(s): Chansa Chomba, Rhamadhani Senzota, Harry Chabwela and Vincent Nyirenda

Classification and ordination of vegetation in Tehsil Takht-e-Nasrati, District Karak, Khyber Pakhtunkhawa, Pakistan

March 2013

A survey of natural vegetation of semi arid area was undertaken in 2010-2011. The study was conducted within four distinct stands further divided into 22 sites for clear communities’ segregation. Hierarchical Cluster Analysis (HCA) and Detrended Correspondence Analysis (DCA) were used for the plant species and community analysis. Plant species of each community are presented together with the information...

Author(s): Musharaf Khan and Farrukh Hussain

Distribution, abundance and population status of Burchell’s zebra (Equus quagga) in Yabello Wildlife Sanctuary, Southern Ethiopia

March 2013

A study on the distribution, abundance and population status of Burchell’s zebra (Equus quagga, Gray 1824) was carried out in the Yabello Wildlife Sanctuary, Southern Ethiopia from October, 2009 to March, 2010 including wet and dry seasons. Distance sampling line-transect counting method was used to estimate the population status. A total of 5151 individuals were estimated with a population density of 6.5...

Author(s): Reta Regassa and Solomon Yirga

Forest disturbance and cropping mixtures influence crop raiding by red-tailed monkey and grey-cheeked mangabey around Mabira Forest Reserve, Uganda

February 2013

Communities around protected areas frequently complain of wild animals destroying already limited crop fields, with little or no assistance offered by conservation stewards towards the mitigation of crop raiding losses. The aim of this study was to find out whether forest disturbance gradient and crop mixtures influence the level of crop raiding by the red-tailed monkey (Cercopithecus ascanius larvatus) and the...

Author(s): Bernard Fungo, Gerald Eilu, Mnason Tweheyo and Deborah Baranga

Distribution, diversity and abundance of copepod zooplankton of Wular Lake, Kashmir Himalaya

February 2013

Wular Lake, the largest freshwater lake of India, plays a significant role in the hydrography of the Kashmir valley by acting as a huge absorption basin for floodwaters. Although rich in biodiversity, no published report is available on Copepoda diversity, distribution and abundance in such an important Ramsar Site of Kashmir Himalaya. Copepod samples, collected over a period of 12 months from September 2010 to...

Author(s): Javaid Ahmad Shah, Ashok K. Pandit and G. Mustafa Shah

Physicochemical evaluation of wastewater from the main sewer in Abidjan City

January 2013

In many parts of the world, health problems have often been caused by untreated wastewater. The objective of this study was to determine the pollution level of wastewater in Abidjan City and to evaluate their impact on marine environment. Thus, wastewatersamples were collected and analyzed according to French Association of Standardization (FANOR). The results show that the values of these parameters...

Author(s): Yapo Toussaint Wolfgang, Mambo Veronique, Yapo Ossey Bernard, Seka M’bassidje Arsene and Houenou Pascal Valentin

A new model: Herbaceous species diversity along the environmental gradient in the typical hilly areas of Henan Province

January 2013

Ecological model is important. The relationship between biodiversity and disturbance gradient, however, makes it difficult to compare data from different studies and draw general conclusions. These results assessed the relationship between disturbance gradients and herbaceous species diversity in the typical hilly areas on varying spatial scales along the environmental gradient in Henan Province. Using community ecology...

Author(s): Bing-Hua Liao,, Pei-Song Liu, Zhen-Zhong Wen, Sheng-Yan Ding, Hai-Long Yu, Zhi-Chao Wang, Zhong-Kai Li, Huan-Xin Chu, Wen-Liang Li and Yi Shen

Natural recolonization and suburban presence of pumas (Puma concolor) in Brazil

November 2012

The puma (Puma concolor, Carnivora: Felidae), extinct from considerable extensions of its former distribution, is considered threatened in south, southeast and northeast Brazil. Areas in the south and southeast have only recently been recolonized by the species, following decrease in logging activities after depletion of the Atlantic rainforest in the 1960s, and measures implemented since 1993 to protect this ecosystem....

Author(s): Marcelo Mazzolli

Forest resources use, attitude, and perception of local residents towards community based forest management: Case of the Makira Reducing Emissions from Deforestation and Forest Degradation (REDD) Project, Madagascar

October 2012

Community participation is seen to be the building block for the efficiency of the Reducing Emissions from Deforestation and Forest Degradation (REDD) project. In order for local residents to cooperate with a reduction of deforestation and forest degradation, they must have a positive perception toward the forest conservation system and positive attitude toward the forest conservation...

Author(s): Cynthia Lalaina Ratsimbazafy, Kazuhiro Harada and Mitsuru Yamamura

Woody species composition, structure and diversity of vegetation of Kalfou Forest Reserve, Cameroon

October 2012

Studies were carried out in the Kalfou Forest Reserve to make an assessment of the flora diversity and to develop preservation guidelines facing the increase in its degradation. The composition of woody species, structure, diversity, density, dominance, frequency of species and family importance value were described and evaluated in all the forest reserve area. A total of 86 species representing 58 genera and 28...

Author(s): Moksia Froumsia, Louis Zapfack, Pierre Marie Mapongmetsem and Bernard-Aloys Nkongmeneck

Roadkill animals on national highways of Karnataka, India

October 2012

Highways passing through national reserves/wildlife sanctuaries have adverse impact upon wild animals. The present survey was conducted to estimate the roadkills on the National Highways NH212 and NH67 passing through Bandipur Tiger Reserve, Karnataka, India during summer and pre-monsoon season at various vegetational levels. The roadkills were monitored thrice a month in each habitat between January, 2007 and June,...

Author(s): Kanagaraj Muthamizh Selvan, Natarajan Sridharan and Sajan John

Patterns of human – wildlife conflicts in Zambia, causes, consequences and management responses

September 2012

  A study was carried out to determine causes, consequences and management responses of human – wildlife conflicts in Zambia during the period 2002 to 2010. Data was collected by field staff in the four management regions of Zambia Wildlife Authority and analyzed to establish patterns and species responsible for human fatalities, livestock predation, crop damage and other damages to human...

Author(s): Chansa Chomba, Ramadhani Senzota, Harry Chabwela, Jacob Mwitwa and Vincent Nyirenda

Comparative Aeropalynology of Ota, Nigeria

September 2012

The aeropalynological sampling of March 2011 was carried out at Ayetoro-Itele, Ota, southwest Nigeria. This was done to create a basis for comparison with March 2010 aerofloral data and verify conclusions made there with respect to its strange haze dust. An improvised aerofloral sampler made up of a food flask base, plastic cylinder, 5 µm mesh sieve and sieve-clamp was mounted on a 2 m stand beside the position of...

Author(s): Adeonipekun, Adegbenga Peter

Benthic macroinvertebrate community of Yousmarg streams (Doodganga stream and Khanshah Manshah canal) in Kashmir Himalaya, India

August 2012

This study attempts to provide an overview of the benthic macroinvertebrate assemblages of Yousmarg streams. For studying the distribution of macroinvertebrate assemblages in the two streams, that is, Doodganga and Khanshah manshah canal, a total of 4 study sites were selected. During the period of investigation, 24 species of macrozoobenthos in Yousmarg streams were recorded. Arthropoda was found to be the most...

Author(s): Shazia Habib and A. R. Yousuf

Long-term ecological impacts of harvesting non-timber forest products on tree species diversity at the periphery of Mbam and Djerem National Park, Cameroon

August 2012

Non-timber forest products (NTFPs) strongly contribute to livelihood security of forest-adjacent communities. This study examined the impacts of their harvesting on tree species diversity at the periphery of Mbam and Djerem National Park (Cameroon). Tree species diversity, with diameter at breast height (dbh) ≥ 10 cm, was analyzed in small plots (10 × 100 m) along seven 1-ha transects. Species diversity and...

Author(s): Souare Konsala, Amougou Akoa, Biye Elvire-Hortense and Fotso Roger-Corneille

Water resources management in the Brazilian agricultural irrigation

July 2012

The Brazilian agribusiness is growing fast, especially in the last fifteen years when the grains production almost two-folded. Besides the expansion in the agricultural frontier to the Amazonian Region, there are other drivers for the success. As one of the biggest country around the globe, Brazil has the largest water reserve in the world. Brazilian agriculture production and productivity are also related to the use of...

Author(s): Letícia de Oliveira and Edson Talamini

The quest for a relevant environmental pedagogy in the African context: Insights from unhu/ubuntu philosophy

July 2012

The quest for environmental sustainability and sustainable use of natural resources has become mandatory if humanity is to successfully manage the environmental fall-out consequent upon industrialisation and modernisation. Educational responses to the environmental crisis involve introducing environmental education or education for sustainable development and of late Climate Change Education for Sustainable Development...

Author(s): Godfrey Museka and Manasa Munashe Madondo

An eco-epidemiological mathematical model with treatment and disease infection in both prey and predator population

July 2012

This paper examines an eco-epidemiological mathematical model with treatment and disease infection in both prey and predator population. A system of differential equations for the problem is proposed and analyzed qualitatively using the stability theory of the differential equations. A local and global study of the model is performed around the disease-free equilibrium and the endemic equilibrium to estimate...

Author(s): Alfred Hugo, Estomih S. Massawe and Oluwole Daniel Makinde

Rethinking green revolution program: The impact of Mozambique’s fast-track green revolution program on the environment and animal rights

June 2012

The green revolution program (GRP) in Mozambique has taken centre stage in academic circles, and academics and researchers have tussled with various aspects of this subject. While the GRP is meant to reduce the country’s food insecurity and was successfully implemented in some countries like India (Arundhati, 2004), the results have been different in many African countries. In Mozambique, GRP has dramatically...

Author(s): Munyaradzi Mawere

Aquatic ecosystem pollution and ecological impacts of agricultural sewage in the Caspian Sea watershed

June 2012

The existing system of management and development of irrigation and drainage without consideration of the ecological danger have led to disruption of the ecosystem balance and change it function. The existence of many rivers draining into the Caspian Sea, and uncontrolled utilization of pesticide toxicants, are one of major concern regarding the water resources in the north provinces of Iran. A study have been done for...

Author(s): Hassan Abbasian, Azim Ashayeri, Hamid G. Meigooni and Shamilla Hosseinmarzeh

Population status of the common hippopotamus (Hippopotamus amphibius) in Luangwa River, Zambia

June 2012

The population size of common hippopotamus, Hippopotamus amphibious in the Luangwa valley, Zambia was assessed for the period of 1976 to 2008. A comparison of historical data on population size for the period of 1952 to1975 was also made. Ecological carrying capacity (K) and carrying capacity band were estimated from data on population size. The river bank foot count method was used, which involved the...

Author(s): Chansa Chomba, Rhamadhani Senzota, Harry Chabwela and Vincent Nyirenda

Impact of climate change and anthropogenic activities on renewable coastal resources and biodiversity in Nigeria

May 2012

Climates related disaster is greatly human induced warming, leading to substantial fluctuations in earth temperature which is currently a global issue of environmental concern. Human proximity and pressure in and around the coastal region has threatened flora, fauna and micro-organic resources of economic importance in most developing nations. Two-third of the word populations lives in or around the coast and 16 of the...

Author(s): Amosu A. O., Bashorun O. W., Babalola O. O., Olowu R. A., and Togunde K. A.

Soil organic carbon stock potential of shrubs, occupying natural Anogeissus latifolia forest in sub-tropical belt of Garhwal Himalaya

May 2012

The soil organic carbon (SOC) stock in three pure shrub species was compared with the adjacent growing Anogeissus latifolia tree stand to understand the changes occurring in SOC stock as a consequence of degradation of A. latifolia forests. Among the shrubs, Rhus parviflora (168.00 ± 1.60 t ha-1) and Lantana camara (164.16 ± 2.08 t ha-1) showed higher values of...

Author(s): Munesh Kumar, Manish Kumar, S. S. Khan, M. Joshi, S. Kumar and J. A. Bhat

Impact of Climate Change in Bangladesh: The Role of Public Administration and Government’s Integrity.

May 2012

Climate change is one of the most important issues to tackle this generation and possibly any generation in history. Bangladesh is a very low energy consuming country, it is pursuing a low carbon growth path, while building its resilience to climate change and reducing the risk of climate change, which represents national development. However, Bangladesh is one of the top 10 nations that are mostly vulnerable...

Author(s): Shakeel Ahmed Ibne Mahmood

Population status and habitat-use pattern of Indian white-backed vulture (Gyps bengalensis) in Himachal Pradesh, India

April 2012

Studies on population status and habitat-use pattern of Indian White-backed Vulture (Gyps bengalensis) in Himachal Pradesh revealed the presence of 22 nesting colonies of this species, supporting 77 nests, of which, only 56 pairs bred successfully during breeding season (October to March/April) in 2010 to 2011. Breeding success increased from around 56% (2009 to 2010) to around 73% (2010 to 2011), indicating a slight...

Author(s): M. L. Thakur and S. K. Narang

Biochemical changes induced by dimethoate (Rogor 30% EC) in the gills of fresh water fish Puntius ticto (Hamilton)

April 2012

The freshwater fish Puntius ticto was exposed to lethal (5.012 ppm) and sublethal (2.506 and 1.253 ppm) concentrations of dimethoate for 96 h and 60 days, respectively. Biochemical changes in the gills were analyzed after exposure period. Exposure of fish to lethal and two sublethal concentration of dimethoate showed decreased in the protein content in the gills after 60 days exposure. As compared to lethal...

Author(s): Ganeshwade R. M.

Population status of the African elephant in Zambia

April 2012

Prior to the 1960s Zambia had an estimated elephant population of over 250, 000, but by 1989 it had fallen to about 18 000 individuals. After about 10 years of improved law enforcement operations and the involvement of local communities, populations stabilized and even started to increase by 1996. In order to update and compare population estimates, aerial surveys using similar methods used in the past were conducted...

Author(s): Chansa Chomba, Chuma Simukonda, Vincent Nyirenda and Francesca Chisangano

Determination of ground water quality of former Lake Haramaya, Oromia Regional State, Ethiopia

April 2012

The assessment of the quality of available groundwater in a certain area is indispensable for the development of human beings in every sector. This study conducted in 2010 assessed the groundwater quality of former Lake Haramaya area to check its suitability for domestic purpose. Primary data were collected from triplicate samples of six sources for physical, chemical and biological analysis. Based on the physical...

Author(s): Zinabu Tebeje Zewdu

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