Document Detail

Trophic levels and trophic dynamics: A consensus emerging?
MedLine Citation:
PMID:  21232425     Owner:  NLM     Status:  In-Data-Review    
There are three clearly different views on trophic levels. The systems-ecological tradition sees trophic levels as relatively discrete and well-defined units whose interactions cannot be derived from interactions between constituent populations. The reductionist population-ecological tradition sees trophic levels as inappropriate abstractions that cannot be used in formulating predictive theories. The tradition of trophic dynamics sees the first three trophic levels of autotroph-based ecosystems as reasonable abstractions, useful in formulating predictive theories, but devoid of properties that could not be directly extrapolated from those of constituent populations. Recent literature suggests that the first two schools are converging towards the viewpoints of the third, though the latter has also been modified by the interaction.
L Oksanen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Trends in ecology & evolution (Personal edition)     Volume:  6     ISSN:  0169-5347     ISO Abbreviation:  Trends Ecol. Evol. (Amst.)     Publication Date:  1991 Feb 
Date Detail:
Created Date:  2011-01-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8805125     Medline TA:  Trends Ecol Evol     Country:  England    
Other Details:
Languages:  eng     Pagination:  58-60     Citation Subset:  -    
Copyright Information:
Copyright © 1991. Published by Elsevier Ltd.
Lauri Oksanen is at the Dept of Ecological Botany, University of Umeå, S-901 87 Umeå, Sweden.
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