Ecological aspects of life history in some net-spinning Trichoptera

  • A. G. Hildrew
Conference paper


Theoretical ecologists have shown that species coexisting stably in the same community may not share the same limiting factors (LEVIN, 1970). The minimum distinction which must occur between two resource-limited species involves differences along niche dimensions (HUTCHINSON, 1957) which determine their use of those resources. The observation of ecological differences in a guild (ROOT 1967) of species is often taken to infer that by such differences competition is avoided and that they serve to divide up a limiting resource. WILLIAMSON (1972) has clearly indicated the weakness of this approach; differences between coexisting species are not necessarily associated with the avoidance of competition now or in the past, nor with limiting resources, though they can indicate situations worthy of further investigation.


Life History Tributary Stream Proportional Representation Downstream Station Queen Mary College 
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© Springer Science+Business Media Dordrecht 1978

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  • A. G. Hildrew

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