منابع مشابه
Conservation Biological Control: from Theory to Practice
The literature of the last 50 years abounds with research papers and reviews of how floral biodiversity might affect the numbers and impact of indigenous natural enemies. However, it is only relatively recently that practical advice is available to any farmer who might wish to exploit such biodiversity in an economically viable fashion. “Practice” in the title of this paper is therefore used in...
متن کاملBiological Networks: Comparison, Conservation, and Evolutionary Trees
We describe a new approach for comparing cellular-biological networks, and finding conserved regions in two or more such networks. We use the length of describing one network, given the description of the other one, as a distance measure. We employ these distances as inputs for generating phylogenetic trees. Our algorithms are fast enough for generating phylogenetic tree of more than two hundre...
متن کاملGenetics and demography in biological conservation.
Predicting the extinction of single populations or species requires ecological and evolutionary information. Primary demographic factors affecting population dynamics include social structure, life history variation caused by environmental fluctuation, dispersal in spatially heterogeneous environments, and local extinction and colonization. In small populations, inbreeding can greatly reduce th...
متن کاملBiological invasions and the conservation of biodiversity.
Consideration of definitions of 'biological invasion' and 'biodiversity' shows why invasions have recently generated great interest among conservationists. Many studies show that invasion numbers have increased drastically over the last five centuries, that this exponential increase is not levelling off, and that human activities are the only reason for the phenomenon. Many mechanisms are portr...
متن کاملRights, governance, and conservation of biological diversity.
Losses of biological diversity, or diversity of life at all levels of biological organization, have crossed a boundary beyond which they pose serious consequences for humanity (Rockstrom et al. 2009). Despite enormous effort by state and global actors to arrest declines in biological diversity, rates of deforestation in the tropics remain high (Asner et al. 2009). Centralized state control of f...
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ژورنال
عنوان ژورنال: Soil Science
سال: 1954
ISSN: 0038-075X
DOI: 10.1097/00010694-195405000-00009