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Titolo:
Procedure for separating the selection effect from other effects in diversity-productivity relationship
Autore:
Spaekova, I; Leps, J;
Indirizzi:
Univ S Bohemia, Fac Biol Sci, Dept Bot, CZ-37005 Ceske Budejovice, Czech Republic Univ S Bohemia Ceske Budejovice Czech Republic CZ-37005 , Czech Republic Acad Sci Czech Republ, Inst Entomol, CZ-37005 Ceske Budejovice, Czech Republic Acad Sci Czech Republ Ceske Budejovice Czech Republic CZ-37005 Republic
Titolo Testata:
ECOLOGY LETTERS
fascicolo: 6, volume: 4, anno: 2001,
pagine: 585 - 594
SICI:
1461-023X(200111)4:6<585:PFSTSE>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANT DIVERSITY; ECOSYSTEM FUNCTION; SPECIES-DIVERSITY; EUROPEAN GRASSLANDS; ECOTRON EXPERIMENT; BIODIVERSITY; COMPETITION; COMPLEMENTARITY; STABILITY; MODEL;
Keywords:
competition; complementarity; overyielding; replacement series; sampling effect; chance effect; species richness;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Spaekova, I Univ S Bohemia, Fac Biol Sci, Dept Bot, Branisovska 31, CZ-37005 Ceske Budejovice, Czech Republic Univ S Bohemia Branisovska 31 Ceske Budejovice Czech Republic CZ-37005
Citazione:
I. Spaekova e J. Leps, "Procedure for separating the selection effect from other effects in diversity-productivity relationship", ECOL LETT, 4(6), 2001, pp. 585-594

Abstract

In a greenhouse pot experiment we cultivated six meadow species in a replacement series design. The plants were grown at two sowing densities in monocultures and all possible species combinations. Our aim was to separate theselection effect from other diversity effects. This distinction is based on the notion that true overyielding is not a consequence of the selection effect. We suggest a hierarchical procedure, which is based on a repeated division of samples into the pots with the most productive species present and missing. Overyielding can be then demonstrated by a positive dependence of productivity on species richness in the subsets with the most productive species present. Although we found a strong dependence of biomass on species richness in the entire data set, the hierarchical method revealed no evidence of overyielding. Above-ground biomass in a monoculture was a good predictor of species success in a species mix.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 15:59:54