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Titolo:
Predicting competition coefficients for plant mixtures: reciprocity, transitivity and correlations with life-history traits
Autore:
Freckleton, RP; Watkinson, AR;
Indirizzi:
Univ Oxford, Dept Zool, Oxford OX1 3PS, England Univ Oxford Oxford England OX1 3PS d, Dept Zool, Oxford OX1 3PS, England Univ E Anglia, Sch Environm Sci, Ctr Ecol Evolut & Conservat, Norwich NR4 7TJ, Norfolk, England Univ E Anglia Norwich Norfolk England NR4 7TJ h NR4 7TJ, Norfolk, England Univ E Anglia, Sch Biol Sci, Ctr Ecol Evolut & Conservat, Norwich NR4 7TJ,Norfolk, England Univ E Anglia Norwich Norfolk England NR4 7TJ ch NR4 7TJ,Norfolk, England
Titolo Testata:
ECOLOGY LETTERS
fascicolo: 4, volume: 4, anno: 2001,
pagine: 348 - 357
SICI:
1461-023X(200107)4:4<348:PCCFPM>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMMUNITY STRUCTURE; ADDITIVE DESIGNS; 2-SPECIES COMPETITION; CROP YIELD; DYNAMICS; DENSITY; MODELS; REPLACEMENT; HIERARCHIES; POPULATIONS;
Keywords:
community dynamics; resource competition; yield-density equation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Freckleton, RP Univ Oxford, Dept Zool, S Parks Rd, Oxford OX1 3PS, EnglandUniv Oxford S Parks Rd Oxford England OX1 3PS 3PS, England
Citazione:
R.P. Freckleton e A.R. Watkinson, "Predicting competition coefficients for plant mixtures: reciprocity, transitivity and correlations with life-history traits", ECOL LETT, 4(4), 2001, pp. 348-357

Abstract

There are few empirical or theoretical predictions of how per capita or per individual competition coefficients for pairs of plant species should relate to each other. In contrast, there are a considerable number of general hypotheses that predict competitive ability as a function of a range of ecological traits, together with a suite of increasingly sophisticated models for competitive interactions between plant species. We re-analyse a data set on competition between all pairwise combinations of seven species and show that competition coefficients relate strongly to differences between the maximum sizes, root allocation, emergence time and seed size of species. Regressions suggest that the best predictor of competition coefficients is the difference in the maximum size of species and that correlations of the other traits with the competition coefficients occur through effects on the maximum size. We also explore the patterns of association between coefficients across the competition matrix. We find significant evidence for coefficient reciprocity (inverse relationships between the interspecific coefficients for species pairs) and transitivity (numerically predictable hierarchiesof competition between species) across competition matrices. These resultstherefore suggest simple null models for plant community structure when there is competition for resources.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 20:06:06