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Statements

Subject Item
n2:RIV%2F67985939%3A_____%2F09%3A00340122%21RIV10-MSM-67985939
rdf:type
n5:Vysledek skos:Concept
dcterms:description
Numerous species of the genus Polylepis form the highest treeline in the world, with striking dissimilarities in their upper altitudinal limits. The commonly accepted hypothesis is: growth at a treeline is temperature-limited. Using records of morphological and ecophysiological traits, we aimed to identify other factors influencing altitudinal distribution of P. tarapacana, P. tomentella and P. rugulosa in dry tropical Andes. Trait changes were generally more pronounced in P. rugulosa (it had e.g. elevated transpiration, cuticular waxes most enriched in 13C). Trade-offs linked to leaf area likely drive differentiation and adaptations to altitude of these species. While the upper distribution limit of P. tarapacana and P. tomentella is driven by low temperature, water is an important additional factor controlling the altitudinal distribution of P. rugulosa. Hence, water stress needs to be taken into account among the factors shaping altitudinal distribution of tropical treeline species. Numerous species of the genus Polylepis form the highest treeline in the world, with striking dissimilarities in their upper altitudinal limits. The commonly accepted hypothesis is: growth at a treeline is temperature-limited. Using records of morphological and ecophysiological traits, we aimed to identify other factors influencing altitudinal distribution of P. tarapacana, P. tomentella and P. rugulosa in dry tropical Andes. Trait changes were generally more pronounced in P. rugulosa (it had e.g. elevated transpiration, cuticular waxes most enriched in 13C). Trade-offs linked to leaf area likely drive differentiation and adaptations to altitude of these species. While the upper distribution limit of P. tarapacana and P. tomentella is driven by low temperature, water is an important additional factor controlling the altitudinal distribution of P. rugulosa. Hence, water stress needs to be taken into account among the factors shaping altitudinal distribution of tropical treeline species.
dcterms:title
Morphological and ecophysiological traits shaping altitudinal distribution of three Polylepis treeline species in the dry tropical Andes Morphological and ecophysiological traits shaping altitudinal distribution of three Polylepis treeline species in the dry tropical Andes
skos:prefLabel
Morphological and ecophysiological traits shaping altitudinal distribution of three Polylepis treeline species in the dry tropical Andes Morphological and ecophysiological traits shaping altitudinal distribution of three Polylepis treeline species in the dry tropical Andes
skos:notation
RIV/67985939:_____/09:00340122!RIV10-MSM-67985939
n3:aktivita
n6:P n6:Z
n3:aktivity
P(IAA601410505), P(LC06073), Z(AV0Z60050516), Z(MSM6007665801)
n3:cisloPeriodika
6
n3:dodaniDat
n9:2010
n3:domaciTvurceVysledku
n18:7699700
n3:druhVysledku
n8:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
327470
n3:idVysledku
RIV/67985939:_____/09:00340122
n3:jazykVysledku
n15:eng
n3:klicovaSlova
Cuticular waxes; Gas exchange; Treeline
n3:klicoveSlovo
n14:Cuticular%20waxes n14:Gas%20exchange n14:Treeline
n3:kodStatuVydavatele
FR - Francouzská republika
n3:kontrolniKodProRIV
[4B22988B3E5B]
n3:nazevZdroje
Acta Oecologica-International Journal of Ecology
n3:obor
n13:EF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n11:LC06073 n11:IAA601410505
n3:rokUplatneniVysledku
n9:2009
n3:svazekPeriodika
35
n3:tvurceVysledku
Macková, J. de Bello, F. Macek, Petr
n3:wos
000271969500002
n3:zamer
n4:AV0Z60050516 n4:MSM6007665801
s:issn
1146-609X
s:numberOfPages
8