Myths and realities of the “new” green economy

This article details new research showing that the majority of U.S. consumers have strong inclinations to buy earth-sustainable food products. Contrary to prevailing beliefs in the industry, the market potential for these products is enormous—52 percent of consumers are willing to buy “green,” and nearly one-third (30 percent) can actually be considered as the core market for earth-sustainable food products. Yet these products currently represent only 2 percent of all food sales. This immense gap can be eliminated by turning our focus from supply (an endless stream of new product introductions) to demand (the needs of the consumer). Doing so requires a clear understanding of the consumer and the dispelling of several myths that pervade the marketplace today. Information in this article was taken from Phase 1 of The Hartman Report—Food and the Environment: A Consumer's Perspective, which examines the consumer segments in much more detail with regard to attitudinal, demographic, and psychographic profiles. The report was commissioned, in part, by The Kellogg Foundation, The Food Alliance, and Cascadian Farm. Phase II of the research more closely examines those segments that represent the key target markets for these products, including information on the effects of advertising, public relations, and labels in communicating environmentally sustainable product messages. Phase III will develop specific retail tactics that can be effective in delivering products and services to the most important segments. For information on obtaining a copy of the report, contact The Hartman Group at 206–451–9094.     

Moving toward economic-cum-environmental sustainability in Asian developing countries

Summary Environmental degradation in the Asian Pacific area developing countries continues and has probably increased since the Stockholm Conference of 1972. The causes for this continued environmental degradation in Asia are analyzed. The paper assesses the actions of the International Assistance Agencies in providing support for the Asian developing countries since Stockholm. The Asian Development Bank project on Economic Policies for Sustained Development is described, and advocated as an important first step in a strategy moving towards economic-cum-environmental sustainability. Drastic changes and bold initiatives are suggested and required to establish true sustainable development for the developing countries.Dr Harvey F. Ludwig is Chairman of SEATEC International Consulting Engineers. He is a regular contributor to this journal.     

Environmental impact from agrochemicals in Bali (Indonesia)

Irrigation of paddy has been practised for centuries in Bali, based on the use of upland weirs for diverting river waters to irrigate downstreams lands ranging from upland terraces to flat coastal plains. While in earlier times, traditional irrigation practices have met the island's food needs, in recent decades an increasing population has increased food requirements to levels surpassing the productivity of traditional methods. Government assistance programs were initiated beginning in about 1960, and a major new program, called the Bali Irrigation Project, is now being implemented. These programs recognize that little additional farm lands will be available, hence their objective is to increase productivity through intensified agriculture, including the use of high-yield rice varieties and increasing amounts of agricultural chemicals, including both fertilizers and pesticides. The feasibility study for the Bali Irrigation Project included an evaluation of the pollutional effects of agricultural chemicals used in Bali. The study showed that past use of hard organochlorides has pervasively polluted the island's soil and water resources and, while the Government's programs now use only relatively degradable chemicals, considerable environmental damage has already occurred and much care will be needed in avoiding the use of hard toxics in the future. The study also indicated no adverse effects from increased use of fertilizers.     

Dietary effects on oocyte yolk-composition inCapitella sp. I (Annelida: Polychaeta): Fatty acids and sterols

In 1988, immatureCapitella sp. I (initial biomass 80µg dry wt) were raised on four diets: Gerber cereal, TetraMin fish food,Ulva sp., and benthic diatoms. After 2 wk of culturing different populations on these diets, eggs were dissected from gravid females, frozen and analyzed for fatty acid and sterol composition. Eggs produced by worms on different food types were discriminated by fatty acid composition in a principal component analysis (PCA), with 18:1⁹, 18:2, 20:5 and 20:4 fatty acids showing the greatest differences between experimental groups. The sterol profiles of all eggs were dominated by cholesterol (cholest-5-en-3-ol) and cholest-5,24-dien-3-ol (>60%). A PCA of egg sterols discriminated between adult diets with cholesterol, 23,24-dimethyl-cholesta-5-en-3-ol, cholest-5,24-dien-3-ol and a C-29 stenol showing the greatest differences. In field populations ofCapitella sp. I, oocytes produced at different times of the year may have different levels of lipids depending on their dietary availability during vitellogenesis. Variations in oocyte composition may influence larval growth and development and thus have an impact on population dynamics. Alternatively, variations in fatty acid and sterol composition of oocytes may allow us to identify the food resources utilized by this species.     

Conservation of the African Great Lakes: A Limnological Perspective

The limnology of Lakes Malawi Tanganyika, and Victoria is discussed with the objective of examining how the physical, chemical, and biological properties of the lakes will determine the response of these ancient great lake ecosystems to human activities. Of the physical properties discussed, large dilution capacities and long flushing times can make the detection and removal of chemical pollutants in these lakes difficult. The outflows of all three lakes are small because of high evaporation losses, and as a result lake levels are responsive to climate changes that would alter evaporation:precipitation ratios. Increased nutrient input to these lakes will likely result in a decrease in the volume of oxygenated water and available fish habitat. Plankton community composition will also change, probably toward dominance by cyanobacteria. While the effects of eutrophication on fish production are difficult to predict, changes in plankton composition would almost certainly be accompanied by changes in fish community structure. Recent studies of water chemistry and plankton productivity in Lake Victoria provide evidence of possible eutrophication. Because land use has a diffuse but potentially large impact on these lakes, conservation strategies must take into account human activities within entire drainage basins. This requires cooperation between riparian countries and technological and financial input from the international community. An immediate need is the establishment of monitoring programs to determine the impact, real or potential, of human activities around the lakes.     

The creation of an historical meteorological database for environmental dose assessment

The focus of this study is to develop wind data for the SavannahRiver Site (SRS) between 1955 and 1961 to be used in an assessment of estimates of atmospheric dispersion and downwindrisk at the Savannah River Site. In particular, a study of theuncertainties of radioiodine dosimetry from the late 1950sprovides the underlying motivation for developing historicalwindroses at the Savannah River Site (SRS). Wind measurement towers did not exist at the SRS until theearly 1970s. Three relatively simple methods were used to createa 1955–1961 meteorological database for the SRS for a dosereconstruction project. The winds were estimated from onsitemeasurements in the 1990s and National Weather Service (NWS)observations in the 1990s and 1950s using (1) a linear regressionmethod, (2) a similarity theory approach, and (3) a simplestatistical differences method. The criteria for determining success were based on (1) howwell the mean values and standard deviations of the predictedwind speed agree with the known SRS values from the 1990s, (2) the shape of the predicted frequency distribution functions forwind speed, and (3) how closely the predicted windroses resembledthe SRS windrose for the 1990s. The linear regression model's wind speed distribution functionwas broad, flat, and skewed too much toward higher wind speeds.The similarity theory approach produced a wind speed distributionfunction that contained excess predicted speeds in the range 0–1.54 m s^-1 (0–3 kts) and had `excluded' bins caused bypredictions being made from integer values of knots in the NWSdata. The distribution function from the mean difference methodwas smooth with a shape like a Weibull distribution with a shapeparameter of 2 and appearedto resemble closely the SRS 1992–1996 distribution.The wind directions for all three methods of approach weresuccessfully based on the mean difference method. It wasdifficult to discern differences among the wind roses produced bythe three methods so the wind speed distribution functions needto be examined in order to make an informed choice for dose reconstruction.     

Minor illness as a legitimate reason for absence

This study proposes that the perceived legitimacy of minor illness as a reason for absence varies according to the nature of the illness, sex, job grade/socio‐economic status and age. A measure of perceived legitimacy was constructed which incorporated illnesses commonly given as reasons for short‐term absence. Thirteen hundred civil servants provided data on an employee survey. Absence frequency data were collected for 115 of these respondents over a 55‐month period. General support was found for four of the five study hypotheses. Contrary to one hypothesis, it was found that men legitimize minor illnesses as reasons for absence more than women. Clusters of minor illnesses were identified using a factor analysis. The implications for management responses to absence and for further research into the perception of minor illness are considered. Copyright © 1999 John Wiley & Sons, Ltd.