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Biodiversity research needs to broaden its scope by incorporating human well-being elements if it is to attract public attention and thus affect conservation policy. Emphasizing the invaluable link between biodiversity conservation and human well-being will likely change the current, apathetic public perceptions about biodiversity conservation—the results of which are evident in the lack of urgency in tackling the crisis of biodiversity loss.  相似文献   

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Biodiversity priority areas together should represent the biodiversity of the region they are situated in. To achieve this, biodiversity has to be measured, biodiversity goals have to be set and methods for implementing those goals have to be applied. Each of these steps is discussed. Because it is impossible to measure all of biodiversity, biodiversity surrogates have to be used. Examples are taxa sub-sets, species assemblages and environmental domains. Each of these has different strengths and weaknesses, which are described and evaluated. In real-world priority setting, some combination of these is usually employed. While a desirable goal might be to sample all of biodiversity from genotypes to ecosystems, an achievable goal is to represent, at some agreed level, each of the biodiversity features chosen as surrogates. Explicit systematic procedures for implementing such a goal are described. These procedures use complementarity, a measure of the contribution each area in a region makes to the conservation goal, to estimate irreplaceability and flexibility, measures of the extent to which areas can be substituted for one another in order to take competing land uses into account. Persistence and vulnerability, which also play an important role in the priority setting process, are discussed briefly.  相似文献   

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Biodiversity and Conservation - Numerous conservation activities in Africa have been of little effect. In this study, we investigate socio-economic trade-offs that might have been overlooked, yet...  相似文献   

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Recent evidence strongly suggests that biodiversity loss and ecosystem degradation continue. How might a systems approach to ecology help us better understand and address these issues? Systems approaches play a very limited role in the science that underpins traditional biodiversity conservation, but could provide important insights into mechanisms that affect population growth. This potential is illustrated using data from a critically endangered bird population. Although species-specific insights have practical value, the main applied challenge for a systems approach is to help improve our understanding of the role of biodiversity in the context of ecosystem services (ES) and the associated values and benefits people derive from these services. This has profound implications for the way we conceptualize and address ecological problems. Instead of focusing directly on biodiversity, the important response variables become measures of values and benefits, ES or ecosystem processes. We then need to understand the sensitivity of these variables to biodiversity change relative to other abiotic or anthropogenic factors, which includes exploring the role of variability at different levels of biological organization. These issues are discussed using the recent UK National Ecosystems Assessment as a framework.  相似文献   

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New Zealand belongs to the Pacific region, a part of the world where human impacts have been both very recent and extreme in their effect. The New Zealand natural environment is rich in endemic taxa, but these are poorly equipped to cope with the effects of invasion by humans and exotic animals and plants. Polynesian immigrants brought to New Zealand a distinctive world view which gave rise to both tribal traditions and living traditions of the Maori. The resultant environmental ethic emphasises guardianship and stewardship, establishment of the right to use a resource, kinship obligations, and a balance between pairs of opposites. Nineteenth-century European colonists were ambivalent in their view of the environment, although a world view which emphasises dominion has tended to dominate. Two recent developments which are important factors in development of a multicultural biodiversity ethic are the enactment of the Resource Management Act 1991 and legal recognition of the principles of the Treaty of Waitangi. The intersection of these developments provides an opportunity to develop a new approach to environmental ethics especially in conceptualising significance, consultative processes, and developing a holistic and ecocentric use of resources.  相似文献   

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Biodiversity addresses the wealth of species that constitute the biosphere. Notwithstanding that they have been regarded as mental constructs in the past, species are really existing entities that form and disappear in the course of evolution. Molecular techniques allow to trace the dynamics of speciation and to determine the relatedness of species and the genetic diversity within populations. These techniques also permit to recognize the incredible diversity of protists: their importance for the global conversion of biomass and energy had been greatly underestimated until recently. Because it is not possible to count all species living on earth, a variety of approaches have been used to estimate global biodiversity. Such estimations are extrapolations of historical trends or of punctual assessments of the biodiversity of selected ecosystems. Therefore, new concepts are required to calculate global biodiversity. Systematic approaches that evaluate small, complex biotopes exhaustively, or that calculate the number of symbionts or parasites on the basis of their potential hosts have already led to a substantial revision of earlier estimations. Here, an evaluation of potential animal hosts for methanogenic archaea and intestinal protists is described that reveals the importance of host taxonomy for the assessments. If molecular techniques can confirm the presumed specificity of symbiotic and parasitic associations a substantial revision of the current assumptions about the biodiversity of such organisms will be necessary.  相似文献   

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Laboratory research recently has greatly enhanced the understanding of placebo and nocebo effects by identifying specific neuromodulators and brain areas associated with them. However, little progress has been made in translating this knowledge into improved patient care. Here, we discuss the limitations in our knowledge about placebo (and nocebo) effects and the need for translational research with the aim of guiding physicians in maximizing placebo effects and minimizing nocebo effects in their routine clinical practice. We suggest some strategies for how, when and why interventions to promote beneficial placebo responses might be administered in the clinical setting.  相似文献   

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Species identification lies at the heart of most ecological studies, but it is recognized as a difficult and often frustrating task. Taxonomists have sought to overcome the difficulties of species identification by developing a range of tools and techniques that have increasingly involved the use of computers. We describe recent developments in computer-aided species identification, which have been in four main areas; multi-access keys; hypertext keys; expert systems; and neural networks. We also suggest which technique might be appropriate for a particular taxonomic group.  相似文献   

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Numerous experimental studies suggest that biodiversity loss is detrimental to ecosystem functions such as production and nutrient cycling. These experiments, however, have been criticized as unrealistic because they use combinations of species that do not resemble what is observed in nature. Bracken et al. take a novel approach, using species combinations observed in the field and computer simulations to explore many other combinations. Their approach represents a significant advance in making biodiversity research more realistic.  相似文献   

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Life cycle assessment (LCA) is a methodology for assessing the environmental impacts associated with products throughout their lifecycle. Many impacts are accounted for within the LCA framework, but to date biodiversity impacts have received little attention. There are a number of existing direct and indirect measures of biodiversity within the ecological field, some of which have the potential to be developed into a useable method for LCA. However, our assessment is that considerable development would be required and their implementation for LCA is not likely in the foreseeable future. Here an alternative approach is proposed for rapidly incorporating biodiversity impacts into LCA. The approach relies on expert opinions through a series of questions which aim to encapsulate the main issues relating to biodiversity within a disturbance impact framework. While the technique is in its infancy we outline a foundation for the approach and identify the steps required to develop this method for implementation into LCA.  相似文献   

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