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Statements

Subject Item
n2:RIV%2F60076658%3A12310%2F14%3A43887245%21RIV15-MSM-12310___
rdf:type
skos:Concept n16:Vysledek
dcterms:description
Few studies have examined consequences of ecotypic differentiation within alpine foundation species for community diversity and their feedbacks for the foundation species' fitness. Additionally, no study has quantified ecotypic differences in competitive effects in the field and in controlled conditions to disentangle genetic from plasticity effects in foundation/subordinate species interactions. We focused on a subalpine community of the French Pyrenees including two phenotypes of a cushion-forming species, Festuca gautieri: tight cushions in dry convex outcrops, and loose cushions (exhibiting high subordinate species richness) in wet concave slopes. We assessed, with field and shadehouse experiments, the genetic vs. plasticity basis of differences in: (1) cushion traits and (2) competitive effects on subordinates, and (3) quantified community feedbacks on foundation species' fitness. We found that trait differences across habitats had both genetic and plasticity bases, with stronger contribution of the latter. Field results showed higher competition within loose than tight phenotypes. In contrast, shadehouse results showed higher competitive ability for tight phenotypes. However, as changes in interactions across habitats were due to environmental effects without changes in cushion effects, we argue that heritable and plastic changes in competitive effects maintain high subordinate species diversity through decreasing competition. We showed high reproduction cost for loose cushions when hosting subordinates highlighting the occurrence of community feedbacks. These results suggest that phenotypic differentiation within foundation species may cascade on subordinate species diversity through heritable and plastic changes in the foundation species' competitive effects, and that community feedbacks may affect foundation species' fitness. Few studies have examined consequences of ecotypic differentiation within alpine foundation species for community diversity and their feedbacks for the foundation species' fitness. Additionally, no study has quantified ecotypic differences in competitive effects in the field and in controlled conditions to disentangle genetic from plasticity effects in foundation/subordinate species interactions. We focused on a subalpine community of the French Pyrenees including two phenotypes of a cushion-forming species, Festuca gautieri: tight cushions in dry convex outcrops, and loose cushions (exhibiting high subordinate species richness) in wet concave slopes. We assessed, with field and shadehouse experiments, the genetic vs. plasticity basis of differences in: (1) cushion traits and (2) competitive effects on subordinates, and (3) quantified community feedbacks on foundation species' fitness. We found that trait differences across habitats had both genetic and plasticity bases, with stronger contribution of the latter. Field results showed higher competition within loose than tight phenotypes. In contrast, shadehouse results showed higher competitive ability for tight phenotypes. However, as changes in interactions across habitats were due to environmental effects without changes in cushion effects, we argue that heritable and plastic changes in competitive effects maintain high subordinate species diversity through decreasing competition. We showed high reproduction cost for loose cushions when hosting subordinates highlighting the occurrence of community feedbacks. These results suggest that phenotypic differentiation within foundation species may cascade on subordinate species diversity through heritable and plastic changes in the foundation species' competitive effects, and that community feedbacks may affect foundation species' fitness.
dcterms:title
Phenotypic differentiation within a foundation grass species correlates with species richness in a subalpine community Phenotypic differentiation within a foundation grass species correlates with species richness in a subalpine community
skos:prefLabel
Phenotypic differentiation within a foundation grass species correlates with species richness in a subalpine community Phenotypic differentiation within a foundation grass species correlates with species richness in a subalpine community
skos:notation
RIV/60076658:12310/14:43887245!RIV15-MSM-12310___
n4:aktivita
n6:P
n4:aktivity
P(EE2.3.30.0006)
n4:cisloPeriodika
2
n4:dodaniDat
n18:2015
n4:domaciTvurceVysledku
Pinguet, Yoann
n4:druhVysledku
n7:J
n4:duvernostUdaju
n13:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
36429
n4:idVysledku
RIV/60076658:12310/14:43887245
n4:jazykVysledku
n17:eng
n4:klicovaSlova
Feedback effects; Facilitation; Phenotypic plasticity; Competition; Biotic interactions
n4:klicoveSlovo
n10:Phenotypic%20plasticity n10:Facilitation n10:Biotic%20interactions n10:Feedback%20effects n10:Competition
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[DA7121878C76]
n4:nazevZdroje
Oecologia
n4:obor
n15:EH
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
4
n4:projekt
n9:EE2.3.30.0006
n4:rokUplatneniVysledku
n18:2014
n4:svazekPeriodika
176
n4:tvurceVysledku
Al Hayek, Patrick Touzard, Blaise Michalet, Richard Pinguet, Yoann
n4:wos
000342205600021
s:issn
0029-8549
s:numberOfPages
12
n14:doi
10.1007/s00442-014-3034-3
n12:organizacniJednotka
12310