About: Heterogeneity-constrained random resampling of phytosociological databases

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Aim: Phytosociological databases often contain unbalanced samples of real vegetation, which should be carefully resampled before any analyses. We propose a new resampling method based on species composition, called heterogeneity-constrained random (HCR) resampling. Method: Many subsets of the source vegetation database are selected randomly. These subsets are sorted by decreasing mean dissimilarity between pairs of the vegetation plots, and then sorted again by increasing variance of these dissimilarities. Ranks from both sortings are summed for each subset, and the subset with the lowest summed rank is considered as the most representative. Results: Both stratified and HCR resampling yielded selection patterns more similar to the reference than resampling without these tools. Outcomes from the resampling that combined these two methods were the most similar to the reference. The efficiency of the HCR resampling method varied with different levels of aggregation in the database. Aim: Phytosociological databases often contain unbalanced samples of real vegetation, which should be carefully resampled before any analyses. We propose a new resampling method based on species composition, called heterogeneity-constrained random (HCR) resampling. Method: Many subsets of the source vegetation database are selected randomly. These subsets are sorted by decreasing mean dissimilarity between pairs of the vegetation plots, and then sorted again by increasing variance of these dissimilarities. Ranks from both sortings are summed for each subset, and the subset with the lowest summed rank is considered as the most representative. Results: Both stratified and HCR resampling yielded selection patterns more similar to the reference than resampling without these tools. Outcomes from the resampling that combined these two methods were the most similar to the reference. The efficiency of the HCR resampling method varied with different levels of aggregation in the database. (en)
Title	Heterogeneity-constrained random resampling of phytosociological databases Heterogeneity-constrained random resampling of phytosociological databases (en)
skos:prefLabel	Heterogeneity-constrained random resampling of phytosociological databases Heterogeneity-constrained random resampling of phytosociological databases (en)
skos:notation	RIV/00216224:14310/11:00054653!RIV12-MSM-14310___
http://linked.open...avai/predkladatel	Přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM0021622416)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Chytrý, Milan Tichý, Lubomír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	201952
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/11:00054653
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Data representativeness; Point pattern; Releve; Ripley's K function; Sample plot; Selection; Stratification; Vegetation survey (en)
http://linked.open.../riv/klicoveSlovo	Data representativeness Point pattern Releve Ripley's K function Sample plot Selection Stratification Vegetation survey
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[4D05974DEE64]
http://linked.open...i/riv/nazevZdroje	Journal of Vegetation Science
http://linked.open...in/vavai/riv/obor	EF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	22
http://linked.open...iv/tvurceVysledku	Chytrý, Milan Tichý, Lubomír Lengyel, Attila
http://linked.open...ain/vavai/riv/wos	000286146800016
http://linked.open...n/vavai/riv/zamer	Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time
issn	1100-9233
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/j.1654-1103.2010.01225.x
http://localhost/t...ganizacniJednotka	14310
is http://linked.open...avai/riv/vysledek of	Heterogeneity-constrained random resampling of phytosociological databases Heterogeneity-constrained random resampling of phytosociological databases

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