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Indices of plant competition

Title data

Weigelt, Alexandra ; Jolliffe, Peter:
Indices of plant competition.
In: Journal of Ecology. Vol. 91 (2003) Issue 5 . - pp. 707-720.
ISSN 1365-2745
DOI: https://doi.org/10.1046/j.1365-2745.2003.00805.x

Abstract in another language

1 Mathematical indices, formed by combining several primary measures, can help researchers summarize, interpret and display results from plant competition experiments. This essay compiles and discusses more than 50 indices which have been used in studies of plant competition.
2 Indices allow researchers to quantify and express several attributes of plant competition, including competition intensity and importance, competitive effects and responses, and the outcome of competition.
3 Several qualities should be considered when selecting a competition index for use. These include specificity and clarity of meaning, mathematical and statistical properties, density dependence, versatility and freedom from size bias.
4 Many indices are based on comparisons of plant performance in mixtures compared to pure stands or control plots. Additional measures of competition are also available from yield-density functions, size distributions and neighbourhood analysis.
5 Indices reflect the consequences of competition. In order to appreciate competitive processes, indices have to be used in conjunction with studies of the chronology, circumstances and composition of plant associations.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER18787
Keywords: competition indices; competition intensity; competitive effects; competitive responses; outcome of competition
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 31 Aug 2015 05:51
Last Modified: 31 Aug 2015 05:51
URI: https://eref.uni-bayreuth.de/id/eprint/18932