منابع مشابه
Underwater Observations on the Fauna of Shallow Rocky Areas in the Neighbourhood of Plymouth
Since 1954 I have made many underwater explorations in the neighbourhood of Plymouth using aqualung equipment. Diving has been generally restricted to rocky areas within the I5-fathom line. In these areas, because of the difficulty of dredging, there has been little information available concerning the general pattern of the fauna; as Drach (1952) has poin~ed out, direct study with diving appar...
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Note: Technical notes are aimed at promoting discussion. The views expressed are not necessarily those of the editors or the Australian Acoustical Society. Contributions are not formally peer-reviewed.
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Assessment of age and size structure of marine populations is often used to detect and determine the effect of natural and anthropogenic factors, such as commercial fishing, upon marine communities. A primary tool in the characterisation of population structure is the distribution of the lengths or biomass of a large sample of individual specimens of a particular species. Rather than use relati...
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In the 1990s, much discourse both in and about global civil society was beset by a false opposition. On the one side was the utopia of cosmopolitan liberalism. On the other was the specter of reactionary nationalism or fundamentalism. And, of course, in a variety of settings, some national and some diasporically transnational, the value loading was reversed: fundamentalist or national utopia, t...
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ژورنال
عنوان ژورنال: Nature
سال: 1990
ISSN: 0028-0836,1476-4687
DOI: 10.1038/344300a0