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111.
Harvey S. James Mary K. Hendrickson 《Journal of Agricultural and Environmental Ethics》2010,23(6):571-590
In this paper we consider the question of whether middle-scale farmers, which we define as producers generating between 100,000 and100,000
and 250,000 in sales annually, are better agricultural stewards than small and large-scale producers. Our study is motivated
by the argument of some commentators that farmers of this class ought to be protected in part because of the unique attitudes
and values they possess regarding what constitutes a “good farmer.” We present results of a survey of Missouri farmers designed
to assess farmer attitudes and values regarding a variety of indicators of farmer stewardship, such as the most important
issues in agriculture, environment, and treatment of farm animals, perspectives on the past and future of agriculture, and
ethical behavior. We find little evidence that farmers-of-the-middle are particularly noteworthy in these regards. We do find
evidence, however, that middle-scale farmers are more pessimistic and anxious about their role in the future of agriculture. 相似文献
112.
Global sea-level rise and coastal vulnerability 总被引:1,自引:0,他引:1
113.
In many temperate regions, fuel and oil spills are sometimes managed simply by allowing natural degradation to occur, while monitoring soils and groundwater to ensure that there is no off-site migration or on-site impact. To critically assess whether this approach is suitable for coastal Antarctic sites, we investigated the extent of evaporation and biodegradation at three old fuel spills at Casey Station. Where the contaminants migrated across frozen ground, probably beneath snow, approximately half the fuel evaporated in the first few months prior to infiltration at the beginning of summer. Once in the ground, however, evaporation rates were negligible. In contrast, minor spills from fuel drums buried in an abandoned waste disposal site did not evaporate to the same extent. Biodegradation within all three spill sites is generally very minor. We conclude that natural attenuation is not a suitable management strategy for fuel-contaminated soils in Antarctic coastal regions. 相似文献
114.
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116.
We argue that although attributional processes appear to affect virtually all goal and reward oriented behavior in organizations, they have not received adequate attention in the organizational sciences. In this Incubator, we encourage scholars to unlock the potential of attribution theory to develop more complete explanations of organizational behavior. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
117.
Efficient detection of food patches in oceanic areas by pelagic predators is often linked to large-scale physical structures
(e.g. fronts, upwellings) that are usually rich and predictable. At smaller scales, however, predictability of resource becomes
less clear because of the lability of smaller physical structures such as slicks and drift lines. Here, we explore how light
levels and quantity of flotsam affect the occurrence of foraging Yellow-bellied sea snakes (Pelamis platurus) on slicks. Although this pelagic species was formerly hypothesised to surface randomly and drift passively to reach slicks,
our results show that foraging snakes are far more abundant on slicks if light levels are high and if slicks display flotsam.
The combination of both light and flotsam should enhance the contrast between a potentially favourable slick and the adjacent
waters as seen from an underwater viewpoint. Although our results do not unambiguously demonstrate the ability of Pelamis
platurus to visually detect surface drift lines, they clearly suggest a role of both light levels and amount of flotsam on surfacing
decision. Accordingly, this hypothesis is supported by several complementary traits that are specific to this species. ‘Float-and-wait’
foraging undoubtedly requires efficient detection of, and orientation to, oceanic slicks—processes that are likely less random
and passive than formerly believed. Successful pelagic foraging is no doubt important to this species of sea snake that is
the world’s most widely distributed snake species. 相似文献
118.
The law governing large carnivores in the western U.S. and western Canada abounds in jurisdictional complexity. In the U.S., different federal and state laws govern large carnivore conservation efforts; species listed under the Endangered Species Act are generally protected, whereas those subject to state regulation can be hunted, trapped, or otherwise taken. Neither federal nor state environmental or land management laws specifically protect large carnivores, though these laws can be used to protect habitat. A similar situation prevails in Canada. Canadian federal law does not address large carnivore conservation, although the national parks provide some secure habitat. Provincial laws vary widely; none of these laws specifically protect large carnivores, but some provisions can be invoked to protect habitat. Although the two nations have not entered any bilateral treaties to protect large carnivores, several species receive limited protection under multilateral treaty obligations. Despite these jurisdictional complexities, the existing legal framework can be built upon to promote large carnivore conservation efforts, primarily through a legally protected reserve system. Whether the political will exists to utilize fully the available legal authorities remains to be seen. 相似文献
119.
Harvey Hartman 《环境质量管理》1996,6(2):47-55
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. 相似文献
120.