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51.
Rhys Worrall David Neil David Brereton David Mulligan 《Journal of Cleaner Production》2009,17(16):1426-1434
Sustainable development practices have become an integral part of most major mining companies’ business activities. However, the history of mining and the negative impacts it has had on the natural and social environment mean future mining activities, rightly or wrongly, will be judged against the legacies of the past and current poor performers. Legacy mine land, defined here as land which has been mined and is now being used for another purpose, or is orphaned, abandoned or derelict and in need of remedial work, is one management challenge that will be judged in the context of sustainable development. Globally, millions of such sites exist. Having criteria against which to measure progress toward or away from sustainable development goals is a key to delivering results. The aim of this research was to develop a sustainability criteria and indicators framework to suit the particular needs of legacy mine land. The resulting framework consists of 14 criteria and 72 indicators. 相似文献
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Abstract: The endangered Hawaiian monk seal breeds at six locations in the northwestern Hawaiian Islands. To determine whether significant genetic differentiation exists among these sites, we used microsatellite loci to examine the monk seal population structure at the five largest breeding colonies. Of 27 loci isolated from other seal species, only 3 were polymorphic in an initial screening of one individual from each breeding site. Only two alleles were found at each of these 3 loci in samples of 46–108 individuals. This extremely low variation is consistent with other measures of genetic variability in this species and is probably the result of a recent severe population bottleneck, combined with a long-term history of small population sizes. Although the smallest monk seal subpopulation in this study ( Kure Atoll) showed some evidence of heterozygote deficit, possibly indicative of inbreeding, the next smallest ( Pearl and Hermes Reef) had an apparent excess of heterozygous individuals. Genetic differentiation was detected between the two subpopulations at extreme ends of the range ( Kure and French Frigate Shoals). This trend was significant only at the microsatellite locus for which we had the largest sample size ( Hg6.3: R ST = 0.206, p = 0.002; allelic goodness of fit G h = 15.412, p < 0.005). French Frigate Shoals is the source population for translocated animals that have been released primarily at Kure Atoll. Differentiation between these sites consisted of allele frequency differences (with the same allele predominant in each location at all three loci), rather than the preservation of alternative alleles. Although the translocations have had positive demographic effects, we recommend continued genetic monitoring of both the source and recipient populations because translocated individuals are now entering the breeding population. 相似文献
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This paper develops a general model that can be used to determine the value of sequential forecasts. The model is used (1) to examine the interacting effects of strategies for coping with environmental uncertainty, and (2) to explore the relationship between the theories of sequential choice and quasi-option value. The framework presented bridges these two schools of thought and provides a tool for evaluating one time (e.g., climate change) or repetitive (e.g., pollution) forecasts of environmental damage. 相似文献
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The proboscis extension reflex (PER) is widely used in a classical conditioning (Pavlovian) context to evaluate learning and memory of a variety of insect species. The literature is particularly prodigious for honeybees (Apis mellifera) with more than a thousand publications. Imagination appears to be the only limit to the types of challenges to which researchers subject honeybees, including all the sensory modalities and a broad diversity of environmental treatments. Accordingly, some remarkable insights have been achieved using PER. However, there are several challenges to evaluating the PER literature that warrant a careful and thorough review. We assess here variation in methods that makes interpretation of studies, even those researching the same question, tenuous. We suggest that the numerous variables that might influence experimental outcomes from PER be thoroughly detailed by researchers. Moreover, the influence of individual variables on results needs to carefully evaluated, as well as among two or more variables. Our intent is to encourage investigation of the influence of numerous variables on PER results. 相似文献
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The psychological contract has been viewed as an explanatory framework for understanding the employment relationship, and is regarded by some researchers as central in understanding employee attitudes and behavior. Despite the importance ascribed to the psychological contract, it remains theoretically underdeveloped and has received limited empirical attention. This study takes a new approach to researching the psychological contract, through the use of daily diaries, and addresses a number of fundamental questions regarding its nature. Results show that both broken and exceeded promises occur regularly and in relation to virtually any aspect of work, that the importance of the promise contributes significantly to emotional reactions following broken and exceeded promises, and that the psychological contract is an important concept for understanding everyday fluctuations in emotion and daily mood. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献