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Statements

Subject Item
n2:RIV%2F00216208%3A11620%2F13%3A10139510%21RIV14-GA0-11620___
rdf:type
n12:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.1111/1365-2745.12011
dcterms:description
1. The relationship between environmental productivity and the number of species [species richness-productivity relationship (SRPR)] has been thoroughly studied, but the mechanisms responsible for its form are still largely unknown, possibly because the majority of studies have focused on evaluating the sole effect of a single hypothesis. 2. We tested whether variation in species richness along a productivity gradient is due to variation in (i) the number of individuals, (ii) the number of species in the species pool or (iii) habitat heterogeneity. 3. We measured species richness (S), individual abundance (N) and productivity (P) estimated as standing biomass in different herbaceous communities in the Czech Republic at two spatial scales. Species pool (Spool) was obtained from a database concerning individual habitats, and habitat heterogeneity (H) was measured using the community dissimilarity index. 4. The SRPR was scale-dependent: at the smaller spatial scale of individual plots, there was a significant curvilinearly negative relationship between S and P, whereas at the larger site scale it turned into a non-significant relationship. 5. Species richness was significantly affected by a combined effect of N and Spool at the plot scale and by a combined effect of Spool and H at the site scale. None of these variables was sufficient to explain the SRPR by itself. 6. Synthesis. Our findings indicate that there is no universal form of the species-productivity relationship, and the SRPR is driven by multiple scale-dependent mechanisms. It is important to consider the joint effect of different factors in explaining species richness patterns rather than to focus on the sole effect of productivity. 1. The relationship between environmental productivity and the number of species [species richness-productivity relationship (SRPR)] has been thoroughly studied, but the mechanisms responsible for its form are still largely unknown, possibly because the majority of studies have focused on evaluating the sole effect of a single hypothesis. 2. We tested whether variation in species richness along a productivity gradient is due to variation in (i) the number of individuals, (ii) the number of species in the species pool or (iii) habitat heterogeneity. 3. We measured species richness (S), individual abundance (N) and productivity (P) estimated as standing biomass in different herbaceous communities in the Czech Republic at two spatial scales. Species pool (Spool) was obtained from a database concerning individual habitats, and habitat heterogeneity (H) was measured using the community dissimilarity index. 4. The SRPR was scale-dependent: at the smaller spatial scale of individual plots, there was a significant curvilinearly negative relationship between S and P, whereas at the larger site scale it turned into a non-significant relationship. 5. Species richness was significantly affected by a combined effect of N and Spool at the plot scale and by a combined effect of Spool and H at the site scale. None of these variables was sufficient to explain the SRPR by itself. 6. Synthesis. Our findings indicate that there is no universal form of the species-productivity relationship, and the SRPR is driven by multiple scale-dependent mechanisms. It is important to consider the joint effect of different factors in explaining species richness patterns rather than to focus on the sole effect of productivity.
dcterms:title
Relationship between species richness and productivity in plants: the role of sampling effect, heterogeneity and species pool Relationship between species richness and productivity in plants: the role of sampling effect, heterogeneity and species pool
skos:prefLabel
Relationship between species richness and productivity in plants: the role of sampling effect, heterogeneity and species pool Relationship between species richness and productivity in plants: the role of sampling effect, heterogeneity and species pool
skos:notation
RIV/00216208:11620/13:10139510!RIV14-GA0-11620___
n12:predkladatel
n18:orjk%3A11620
n3:aktivita
n8:P n8:I
n3:aktivity
I, P(GAP505/11/2387)
n3:cisloPeriodika
1
n3:dodaniDat
n5:2014
n3:domaciTvurceVysledku
n4:5948525 n4:6398170
n3:druhVysledku
n11:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
102203
n3:idVysledku
RIV/00216208:11620/13:10139510
n3:jazykVysledku
n10:eng
n3:klicovaSlova
species-productivity relationship; Species Pool Hypothesis; species diversity; local scale; Heterogeneity Hypothesis; determinants of plant community diversity and structure; abundances
n3:klicoveSlovo
n7:abundances n7:local%20scale n7:determinants%20of%20plant%20community%20diversity%20and%20structure n7:Species%20Pool%20Hypothesis n7:Heterogeneity%20Hypothesis n7:species-productivity%20relationship n7:species%20diversity
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[F08EC9F1666F]
n3:nazevZdroje
Journal of Ecology
n3:obor
n19:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n14:GAP505%2F11%2F2387
n3:rokUplatneniVysledku
n5:2013
n3:svazekPeriodika
101
n3:tvurceVysledku
Storch, David Šímová, Irena Li, Yue M.
n3:wos
000317922200018
s:issn
0022-0477
s:numberOfPages
10
n21:doi
10.1111/1365-2745.12011
n13:organizacniJednotka
11620