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Statements

Subject Item
n2:RIV%2F67985939%3A_____%2F12%3A00436202%21RIV15-GA0-67985939
rdf:type
n11:Vysledek skos:Concept
dcterms:description
Plant communities often exhibit high diversity, even though pairwise experiments usually result in competitive hierarchies that should result in competitive exclusion. Such experiments, however, do not typically allow expression of spatial traits, despite theoretical studies showing the potential importance of spatial mechanisms of diversity maintenance. Here we ask whether, in a clonal plant model system, spatial trait variation is more likely than growth trait variation to maintain diversity. We used a field-calibrated, spatially explicit model to simulate communities comprising sets of four simulated species differing in only one of a suite of architectural or growth traits at a time, examining their dynamics and long-term diversity. To compare trait manipulation effects across traits measured in different units, we scaled traits to have identical effects on initial productivity. We found that in communities of species differing only in an architectural trait, all species usually persist, whereas communities of species differing only in a growth trait experienced rapid competitive exclusion. To examine the roles of equalizing and stabilizing mechanisms in maintaining diversity, we conducted reciprocal invasion experiments for species pairs differing only in single traits. The results suggest that stabilizing mechanisms cannot account for the observed long-term co-occurrence. Strong positive correlations between diversity and similarity both in monoculture carrying capacity and reciprocal invasion ability suggesting equalizing mechanisms may instead be responsible. Plant communities often exhibit high diversity, even though pairwise experiments usually result in competitive hierarchies that should result in competitive exclusion. Such experiments, however, do not typically allow expression of spatial traits, despite theoretical studies showing the potential importance of spatial mechanisms of diversity maintenance. Here we ask whether, in a clonal plant model system, spatial trait variation is more likely than growth trait variation to maintain diversity. We used a field-calibrated, spatially explicit model to simulate communities comprising sets of four simulated species differing in only one of a suite of architectural or growth traits at a time, examining their dynamics and long-term diversity. To compare trait manipulation effects across traits measured in different units, we scaled traits to have identical effects on initial productivity. We found that in communities of species differing only in an architectural trait, all species usually persist, whereas communities of species differing only in a growth trait experienced rapid competitive exclusion. To examine the roles of equalizing and stabilizing mechanisms in maintaining diversity, we conducted reciprocal invasion experiments for species pairs differing only in single traits. The results suggest that stabilizing mechanisms cannot account for the observed long-term co-occurrence. Strong positive correlations between diversity and similarity both in monoculture carrying capacity and reciprocal invasion ability suggesting equalizing mechanisms may instead be responsible.
dcterms:title
The Contrasting Roles of Growth Traits and Architectural Traits in Diversity Maintenance in Clonal Plant Communities The Contrasting Roles of Growth Traits and Architectural Traits in Diversity Maintenance in Clonal Plant Communities
skos:prefLabel
The Contrasting Roles of Growth Traits and Architectural Traits in Diversity Maintenance in Clonal Plant Communities The Contrasting Roles of Growth Traits and Architectural Traits in Diversity Maintenance in Clonal Plant Communities
skos:notation
RIV/67985939:_____/12:00436202!RIV15-GA0-67985939
n3:aktivita
n13:P n13:I
n3:aktivity
I, P(GA206/09/1471)
n3:cisloPeriodika
6
n3:dodaniDat
n5:2015
n3:domaciTvurceVysledku
n4:8993971 n4:1326007
n3:druhVysledku
n12:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
128636
n3:idVysledku
RIV/67985939:_____/12:00436202
n3:jazykVysledku
n16:eng
n3:klicovaSlova
individual based model; coexistence; cempetitive exclusion; plant architecture; spatial traits
n3:klicoveSlovo
n10:cempetitive%20exclusion n10:spatial%20traits n10:individual%20based%20model n10:coexistence n10:plant%20architecture
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[5341E98C8AAB]
n3:nazevZdroje
American Naturalist
n3:obor
n18:EF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n14:GA206%2F09%2F1471
n3:rokUplatneniVysledku
n5:2012
n3:svazekPeriodika
180
n3:tvurceVysledku
Wildová, Radka Herben, Tomáš Goldberg, D. E.
n3:wos
000311090100003
s:issn
0003-0147
s:numberOfPages
14
n7:doi
10.1086/668013