Stratified resampling of phytosociological databases: some strategies for obtaining more representative data sets for classification studies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F05%3A00012593" target="_blank" >RIV/00216224:14310/05:00012593 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Stratified resampling of phytosociological databases: some strategies for obtaining more representative data sets for classification studies

Original language description

Question: The heterogeneous origin of the data in large phytosociological databases may seriously influence the results of their analysis. Therefore we propose some strategies for stratified resampling of such databases, which may improve the representativeness of the data. We also explore the effects of different resampling options on vegetation classification. Methods: We used 6050 plot samples (relevés) of mesic grasslands from the Czech Republic. We stratified this database using (1) geographical stratification in a grid; (2) habitat stratification created by an overlay of digital maps in GIS; (3) habitat stratification with strata defined by traditional phytosociological associations; (4) habitat stratification by numerical classification and (5)habitat stratification by Ellenberg indicator values. Each time we resampled the database, taking equal numbers of relevés per stratum. We then carried out cluster analyses for the resampled data sets and compared the resulting classifica

Czech name

Stratifikovaný výběr dat z fytocenologických databází: některé strategie pro získání reprezentativnějších datových soubor pro klasifikační studie

Czech description

Testování stratifikovaného výběru dat z fytocenologických databází a některých strategií pro získání reprezentativnějších datových souborů pro klasifikační studie

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Vegetation Science

ISSN

110-9233

e-ISSN

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Volume of the periodical

16

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

479-486

UT code for WoS article

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EID of the result in the Scopus database

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