Guinea worm control: Assessing the effectiveness of drum-lined water holes

Summary The purpose of the paper is to examine the feasibility of used oil drums as a lining material for shallow rural wells. The discussion focuses upon the comparison of the water quality in the oil drum-lined holes with other local water sources. The response to the innovation, from a range of guinea worm prone rural environments in Ibarapa district, Oyo State, Nigeria, was encouraging. The study noted substantial reductions in cyclop population (potential for guinea worm infection) and improved water quality in the sanitary wells as compared to rural ponds. Investigations also reveal substantial saving in costs in using oil drum-lining as opposed to concrete. Findings point to the need for this kind of water scheme as opposed to sophisticated boreholes, and deep well programmes, especially in situations of limited funds and technical skills necessary to install and maintain water supply systems.Dr Abimbola Y. Sangodoyin obtained his first degree in Agricultural Engineering at the University of Ibadan. He subsequently obtained a MSc in Water Resources Technology and a PhD in Civil Engineering at the University of Birmingham, UK. He is currently a lecturer in the Department of Agricultural Engineering, University of Ibadan where his research has focused on rural water systems and urban solid waste disposal and pollution problems.Mr Miebaka J. Ayotamuno has trained to Master's level as an Agricultural Engineer at the University of Ibadan. He is currently a member of staff at the Department of Agricultural Engineering, River State University of Science and Technology, Port Harcourt, Nigeria.     

Environmental management training in Australia: A case study

Summary Environmental managers require education and training tailored to their particular professional needs. Specifically they need a range of technical (scientific) skills, human interaction skills and integrative skills. The Environmental Management programme at Deakin University, Australia provides much of this training through practical experience in real-life case studies. This paper presents an example of one of these studies undertaken by first year students. Students were required to undertake a research project into household activities which contribute to CO₂ emissions, and so to the enhanced greenhouse effect. The students were responsible for deciding what data was needed, how it was to be collected and analysed, and for drawing appropriate conclusions from the results. From the exercise they obtained useful information on the relative importance of various household activities to CO₂ production (use of cars and electricity topped the list).More importantly, they gained experience in project formulation, the interpersonal skills involved in teamwork, data analysis and interpretation, and working within tight time and budgetary constraints. A strong foundation for later development of the environmental managers' skills was laid.Dr David Stokes is the Dean of the Faculty of Applied Science at Victoria College, Australia. The following Victoria College staff also contributed to the production of this paper: Trevor Blake, Lecturer, Department of Heritage and Resource Management, Dr Geoff Wescott, Principal Lecturer/Head of Department of Heritage and Resource Management; Andrea Lindsay, Research Officer, Faculty of Applied Science; Andrew Treloar, Senior Lecturer, Department of Information and Numerical Sciences; Dr Trevor McKenzie, Senior Lecturer, Department of Applied Science and Dr Ian Dickson, Principal Lecturer/Head of Department of Information and Numerical Sciences. In January 1992 Victoria College merged with Deakin University.     

The relationship between coastal tourism,sea pollution and public health: A case study from Turkey

Summary Among the different impacts of coastal tourism on the environment, the effect of tourism on public health has special importance. The large increase in population during the high season results usually in an increase in the amount of waste water produced. If the necessary infrastructure for handling these wastes is not available, the sea is polluted, causing serious problems.To investigate the effects of sea pollution on the public, a health survey was conducted in Bodrum and Çesme, the two most important tourist coastal resorts of Turkey. A questionnaire about the health problems which tourists suffer, as well as their culinary habits, swimming habits,etc. was distributed. At the same time the pollution level in the sea was determined in the form of coliform concentration. As a result it is shown that those swimming in polluted waters suffer more from gastro-intestinal diseases than others. Furthermore, foreigners (usually Scandinavians) and children are proved to be more susceptible to pollution, possibly due to their lack of immunity.Dr Günay Kocasoy is presently Associate Professor in the Department of Chemical Engineering at Bogaziçi University. Her fields of interest are in environmental engineering, water pollution and marine sciences. She obtained a BS degree in Chemical Engineering from Robert College, Istanbul, Turkey, and subsequently a BA in Industrial Administration from Franklin University, Columbus, Ohio, USA. Following more recent studies she possesses both an MS and a PhD in Marine Sciences from Istanbul University.     

Book review

David Terkla is a professor in the Economics Department and Environmental Sciences Program at the University of Massachusetts Boston.     

Information and research systems in the service of decision-making

Summary When people are in government, they are always involved in some type of information communication, but for more than five years now I have been involved with the Congressional Research Service, CRS, an institution which is totally committed to research and transfer of information to the United States Congress. The Congressional Research Service works exclusively for congress—for al the members and all the committees; and CRS’s scope—information, reference and research—covers all subject areas, including environmental issues, which are of congressional interest. The inquiries from members and staff—by phone, letter or in person—exceed 400 000 a year, and the number of requests has increased at an average rate of almost 9 percent each year over the past decade. Small wonder the service employs about 825 people, 550 of whom are professionals. Gilbert Gude is Director of the Congressional Research Service of the Library of Congress, appointed by Librarian Daniel J. Boorstin in January 1977. Mr Gude’s career in public service began in 1953 when he was elected to the Maryland House of Delegates; he served as a Member of the Maryland State Senate from 1962–1966, before being elected to the US House of Representatives for the 8th District of Maryland in 1967. During his 10-year career in the House he served as ranking member of the Subcommittee on Conservation, Energy and Natural Resources of the Government Operations Committee and ranking member of the Committee on the District of Columbia; he was also a member of the Select Committee on Aging. Mr Gude’s legislative work concentrated in the areas of urban and regional affairs and environmental issues. He was a key sponsor of the bill creating the C&O Canal National Historical Park and developed a number of legislative initiatives involving the Potomac River. Mr Gude is Vice Chairman of the Board of Trustees of The Catholic University of America and a member of the National Academy of Public Administration. He is a former member of Members of Congress for Peace Through Law and former chairman of the 1976 Anglo-American Conference on Africa. Mr Gude received a B.S. from Cornell University in 1948 and an M.A. in public administration from George Washington University in 1958.     

Structure and function of environmental programmes

Summary In this article, the need for integrated curricula in environmental science/studies programmes is reviewed. The required competencies/outcomes for understanding and solution of environmental problems, the requirement for interdisciplinarity and incorporation of innovative skills/methods into environmental curricula, examples of ways to integrate curricula, teaching methodologies and their rationales, impacts of environmental programmes, and academic support for programmes, are also examined in this context.Dr John Lemons is Professor of Biology and Environmental Science, and Chairperson of the Department of Life Sciences at the University of New England. He is also Editor-in-Chief ofThe Environmental Professional, the official journal of the National Association for Environmental Professionals.     

Studies on soil parameters of sediments from the River Ganga phosphorus mobilization,interactions with sediment and the phosphorus cycle

Large quantities of sediment are transported by the River Ganga (The Ganges) particularly In its deltaic region. Attempts have been made to study the physicochemical parameters of the bottom sediments of the River Ganga at various depths at Kamarhati and along the banks of the River Ganga in the lower deltaic region. The results give vital information regarding the pollution load carried by the river and the enrichment of its sediments with nutrients such as P, N and other substances such as C and S (as sulphates). The mobilization of the P, N, C and S (as sulphates) in the sediments is compared with their natural abundance. The enrichment of the river beds with P, the interaction of the sediment and the characteristics of the sediments are ascertained. Some aspects of the phosphorus cycle and its importance are also discussed. The recycling and reuse of sediments for agricultural purposes have been proposed in order to restore ecological imbalances due to nutrient loss.Mrs M. Chattopadhyay (née Ray) and D. Mukherjee are both post-doctorate ex-senior research scholars within the Department of Chemistry, Kalyani University, where Professor S.C. Lahiri was until recently head of department. Mr S.K. Bhattacharya is director of the Ganga Action Plan Sector, Calcutta Metropolitan Development Authority, Unnayan Bhavan (1st floor), Salt Lake, Calcutta 700 091, India. The information given in this paper is supplementary to that provided by certain of the same authors inThe Environmentalist 13(3), 199–210.     

Backfilling canals to mitigate Wetland dredging in Louisiana coastal marshes

Returning canal spoil banks into canals, or backfilling, is used in Louisiana marshes to mitigate damage caused by dredging for oil and gas extraction. We evaluated 33 canals backfilled through July 1984 to assess the success of habitat restoration. We determined restoration success by examining canal depth, vegetation recolonization, and regraded spoil bank soils after backfilling. Restoration success depended on: marsh type, canal location, canal age, marsh soil characteristics, the presence or absence of a plug at the canal mouth, whether mitigation was on- or off-site, and dredge operator performance.Backfilling reduced median canal depth from 2.4 to 1.1 m, restored marsh vegetation on the backfilled spoil bank, but did not restore emergent marsh vegetation in the canal because of the lack of sufficient spoil material to fill the canal and time. Median percentage of cover of marsh vegetation on the canal spoil banks was 51.6%. Median percentage of cover in the canal was 0.7%. The organic matter and water content of spoil bank soils were restored to values intermediate between spoil bank levels and predredging marsh conditions.The average percentage of cover of marsh vegetation on backfilled spoil banks was highest in intermediate marshes (68.6%) and lowest in fresh (34.7%) and salt marshes (33.9%). Average canal depth was greatest in intermediate marshes (1.50 m) and least in fresh marshes (0.85 m). Canals backfilled in the Chenier Plain of western Louisiana were shallower (average depth = 0.61 m) than in the eastern Deltaic Plain (mean depth range = 1.08 to 1.30 m), probably because of differences in sediment type, lower subsidence rate, and lower tidal exchange in the Chenier Plain. Canals backfilled in marshes with more organic soils were deeper, probably as a result of greater loss of spoil volume caused by oxidation of soil organic matter. Canals ten or more years old at the time of backfilling had shallower depths after backfilling. Depths varied widely among canals backfilled within ten years of dredging. Canal size showed no relationship to canal depth or amount of vegetation reestablished. Plugged canals contained more marsh reestablished in the canal and much greater chance of colonization by submerged aquatic vegetation compared with unplugged canals. Dredge operator skill was important in leveling spoil banks to allow vegetation reestablishment. Wide variation in dredge performance led to differing success of vegetation restoration.Complete reestablishment of the vegetation was not a necessary condition for successful restoration. In addition to providing vegetation reestablishment, backfilling canals resulted in shallow water areas with higher habitat value for benthos, fish, and waterfowl than unfilled canals. Spoil bank removal also may help restore water flow patterns over the marsh surface. Increased backfilling for wetland mitigation and restoration is recommended.     

Nitrate levels in shallow groundwater of upstate New York,USA

This paper summarizes research evaluating nitrate levels in shallow groundwater of upstate New York, USA. Water from abandoned dug wells in six different land-use categories was analyzed for nitrate. Findings indicate that regardless of overlying land-use, shallow groundwater is susceptible to high levels of nitrate. Over 60 percent of the water samples tested, including at least one sample from each land-use category, had nitrate levels in excess of the United States drinking water standard of 10 mg 1^–1. Due to the potential threat of elevated nitrate levels, efforts should be made to eliminate abandoned dug wells in shallow groundwater as a source of water supply.Glenn Harris is with the Environmental Studies Programme of St Lawrence University in Canton, New York. Brian Henry is with the Department of Entomology at the University of Georgia in Athens, Georgia. Jeffrey Deyette is with the joint International Relations and Resource and Environmental Management Programme at Boston University in Boston, Massachusetts. This research was performed as a Community Service Project sponsored by the Mergardt Fund while Mr Henry and Mr Deyette were students under the supervision of Dr Harris at St Lawrence University.     

Issues in the environmental sanitation of Lagos mainland,Nigeria

Summary Lagos is asserted to be the filthiest capital in the world. The influx of people into the metropolitan area has no corresponding technology to cope with the solid waste generated by the ever increasing population. Coupled with this lack of technology is the lack of adequate knowledge of the composition and generation rate of the refuse which has led to mismanagement of the environment. Paper waste is identified to constitute the major form of waste generated in Lagos and, in most cases, over 90 percent of the wastes generated are combustible, therefore, the use of incineration is recommended for effective management of the refuse.Dr Afolabi A. Adedibu and Mr A.A. Okekunle are members of staff in the Department of Geography at the University of Ilorin. Dr Adedibu, the senior author, has recently served as Foreign Curriculum Consultant to the Center for African Studies at the University of Florida. Dr Adedibu has presented earlier papers on Nigeria's solid waste management problems inThe Environmentalist, Vol.5, pp.123–127 and Vol.6, pp.63–68.     

Three years after Chernobyl: Some γ-radioactivity values from barra,Outer Hebrides,UK

Summary Plants and animals were investigated to ascertain their- radioactivity values on both dune sites (machair) and inter-tidal sites on the western coast of Barra, Outer Hebrides, UK. Material in both habitats was clearly contaminated. The accumulation of-radioactivity through food webs to organisms such asNucella lapillus (dog whelk) in the inter-tidal sites and in sheep and cattle in terrestrial sites is described.Dr F.B. Pyatt is the Section Leader and Principal Lecturer in Ecology in the Department of Life Sciences at Trent Polytechnic. Dr E.H. Beaumont was previously Lecturer in Zoology at St Hugh's College, University of Oxford, Oxford, UK.     

Environmental impact assessment in ghana-anex post evaluation of the volta resettlement scheme: the case of the Kpong Hydro-electric project

Summary Many Third World Countries (TWCs), like Ghana, have not concerned themselves seriously with environmental problems as part of the entire socio-economic development process, until recently. This, for example, can be seen in their environmental policies and the rate at which these now are being made. Not only are environmental issues being considered in the formulation and implementation of new development programmes and projects, but it is being realised that earlier implemented projects need some evaluation,ex post, for possible, correction of past mistakes or, at least, as a source of self-containment. Thus, there has been interest in the impact assessment of past macro-projects as agricultural and resettlement schemes.An attempt is made to apply a simple matrices methodology to theex post evaluation of the Kpong Hydro-electric Project resettlement aspect, based on identified project and environment components. The results show that the impact on the socio- economic life of the settlers is positively greater than the physical and biological impacts. But considering other elements of the programme package and taking a perspective view, the settlers are after all, no better off. In view of the fact that a number of such schemes are now under consideration, it is useful for policy-makers and planners to learn from these lessons.Sam Ofori-Cudjoe is a Lecturer in Geography at the University of Cape Coast, Ghana. He is currently studying planning research at the Centre for Planning, University of Strathclyde, Glasgow. He obtained a BA (Hons) in Geography from the Department of Geography, University of Ghana, Legon, in 1978, and a MSc (Regional Planning) from the Department of Planning, University of Science and Technology (UST), Kumasi, Ghana, in 1981.     

Environmental Impact Assessment in Ghana: Current administration and procedures — towards an appropriate methodology

Summary Environmental Impact Assessment (EIA) now enjoys at least statutory status in a number of Third World Countries (TWCs), including Ghana. Indeed, it is now considered an important tool of policy and control, both at the central government and local/district government levels. One of the difficulties, however, in implementing EIA has been the design of an appropriate methodology, in view of the fact that most, if not all the existing methodologies are more suitable to developed countries than developing ones.It is argued that in the absence of very sound indigenous methods and approaches, some of the existing inappropriate methodologies could be adapted or domesticated in a developing country like Ghana. The current administration and survey procedure used by the Ghana EIA Authority is examined and among other recommendations, an adapted form of the matrice approach is suggested.Mr Sam C. Ofori is a Lecturer in the Department of Geography at the University of Cape Coast, Ghana. He is currently a PhD research worker at the Centre for Planning, University of Strathclyde. A recent paper by Mr Ofori (then Cudjoe) appeared inThe Environmentalist,10(2), 115–126.     

Public perception towards sewage treatment plants in selected areas in Selangor and Kuala lumpur,Malaysia

Summary A public perception survey on sewage treatment plants carried out in selected areas in Selangor and Kuala Lumpur revealed several interesting and unexpected findings. The general perception patterns regarding odour, noise and visual impact, suggest that the perceived intensity is a function of the time of adaptation. It was also revealed that pests constitute a serious nuisance, to which adaptation was not possible. The level of public awareness regarding sewage treatment was surprisingly low, despite the urban locality of the study areas. The need to educate the public on health and sanitation is viewed as extremely important in terms of social acceptance and the proper operation of sewage treatment plants.Dr C.P. Tso is Associate Professor and Head of the Department of Mechanical Engineering; K.S. Low is a member of the Department of Geography, and G. Balamurugan a member of the Institute of Advanced Studies; all at the University of Malaya.     

Book reviews

Dr. Earl J. “Jay” Baker is an Associate Professor in the Department of Geography and Director of the Environmental Hazards Center at Florida State University. He has conducted extensive research on hurricane evacuation problems and also has studied growth management, policy evaluation, and storm recovery issues in hurricane-prone areas. He is a member of the National Research Council’s Committee on Natural Disasters and a director of the National Hurricane Conference.     

Sources of salinity near a coal mine spoil pile, north-central Colorado

A small (1 km2) salt-affected stream drainage on the High Plains north of Denver, Colorado was sampled to determine the near-surface dispersion of soluble salts and metals from low-sulfur coal mining waste (spoil). Surface waters collected along the 0.8-km stream reach, and aqueous leachates of spoil and naturally saline local soil, were analyzed for chemical constituents and sulfur isotopes. In this semiarid setting with abundant carbonate-bearing surficial sediments, the limited, mildly acidic drainage from the spoil pile is quickly neutralized, restricting the mobility of many elements. However, some spoil-derived constituents were clearly traceable within the upper 0.4 km of the stream reach. Spoil leachates and surface water near the spoil pile have distinctive compositions of major anions and cations, and elevated levels of dissolved nitrate compared with downstream waters. Spoil-derived sulfate was traceable because it has generally positive values of delta34S that contrasted with generally negative values of delta34S in soil leachates and evaporite salts from the surrounding area. Spatial-chemical sampling of surface water showed an abrupt increase in dissolved U, Se, B, Li, and Mn in the lower 0.4 km of the stream reach where shallow ground water from surrounding irrigated fields contributed to surface flow. The downstream evolution of surface water chemistry and sulfur isotopic composition is consistent with mixing between spoil-affected upstream water and irrigation-return water. The methods described should be applicable at other sites in similar settings where the environmental effect of low-sulfur coal mining waste must be assessed and where access to samples of shallow ground water is limited.     

Federalism and environmental politics: An Australian overview

Summary This overview paper examines past Australian conservation controversies and experiences to identify prospective means of ameliorating environmental conflict in the future. Since all community disputes should be resolved by means of political and administrative actions, emphasis is placed on federalism and intergovernmental relations, and measures are suggested which might improve environmental policy and practices in the future.Dr Bruce W. Davis is currently Head of the Department of Political Science, Dean of the Faculty of Arts, and member of the Council of the University of Tasmania. He possesses qualifications and professional experience in engineering, economics and administration. He has numerous publications within the fields of public sector planning and natural resources management, and acts in an advisory and consulting capacity to State and Federal agencies involved in national parks administration, heritage conservation and land-use planning.In addition to University commitments, Dr Davis holds the following appointments: Commissioner, Australian Heritage Commission; Member, Australian National Commission for UNESCO, Man and Biosphere Program; Trustee, World Wildlife Fund Australia; Councillor, Australian Conservation Foundation; and Consultant to IUCN, Gland, Switzerland.     

Sustainable development and environmental technology: a comparison of policy in Japan and the European Union

Summary The concept of sustainable development, is increasingly being proposed as a means to avoid the impasse between economic development and environmental protection. In this paper, the incorporation of the concept of sustainable development into policy-making in both Japan and the European Union is examined. A particular variation in response between the two has been in relation to encouraging the development of environmental or clean technologies, a key element in achieving sustainable development. The benefits of an early lead in environmental technology may result in gains to the economy. In this paper, the potential commercial gains from the integration of environmental policy with industrial, development are also examined.Dr David Gibbs is a Reader and Dr James Longhurst is Director of the Atmospheric Research and Information Centre within the Department of Environmental and Geographical Sciences at Manchester Metropolitan University.     

Review of information on pesticide residues in the Canadian environment

Summary Pesticide residues in soil, water, food, wildlife and other media have been analysed in several monitoring studies. The purpose was to establish the distribution of these residues across a defined area, ascertain their trend over a specific period and use the results to assess environmental compliance and safety. In the present review the availability of information on pesticide residues in various Canadian environmental components was sought. With the possible exception of localized pesticide contamination of some private water supply wells, ground and surface water, most analyses revealed concentrations below guideline limits. Only a few cases were reported of mishandling, misuse and poisoning from pesticides. Continuing surveillance programmes and in-depth and well-organized monitoring studies, with special focus on areas that are vulnerable to contamination, by both provincial and federal governments, are largely responsible for the encouraging results. This experience in the control of pesticide use and monitoring of residues in the environment should be of particular interest in developing countries.Dr A.Y. Sangodoyin is a senior lecturer in the Department of Agricultural Engineering at the University of Ibadan. He was recently involved in a study visit to the University of Alberta, Edmonton, Alberta, Canada T6G 2G7, where his co-author Dr D.W. Smith is a member of staff in the Department of Civil-Engineering.     

The deep-ocean option for the disposal of sewage sludge

Summary Present methods of disposal of high-bulk low-toxicity wastes, such as sewage sludge, into shallow marine environments are beginning to be questioned by many environmentalists. The alternative options generally considered all have environmental costs. A novel approach of discharging such wastes as slurries into the deep ocean at depths of 4,000 m close to the abyssal sea bed is considered. Such disposal would fulfil all the criteria required by the Oslo Convention before dumping at sea can be permitted, in that it isolates the waste from Man's ambit and offers no threat to present or foreseeable uses of the ocean. It also seems to fulfil the criteria of the World Conservation Strategy, so long as the oxygen levels in the deep waters of the ocean are not reduced excessively. The improvements in the quality of coastal seas would offset the doubling in the economic cost of disposal.Dr Martin V. Angel is the Head of the Biological Oceanography Group at the Institute of Oceanographic Sciences Deacon Laboratory. He serves on the Council of the WWF, UK and is a member of its Conservation Review Group. He is also a member of the IUCN Commission of Ecology, with particular interests in conservation of oceans and Antarctica. His professional expertise is in the ecology of deep-living pelagic organisms in the oceans but he is also an editor of a research journal,Progress in Oceanography and an external examiner for the Open University.