Dataset Open Access

CzechVeg-ESy: Expert system for automatic classification of vegetation plots from the Czech Republic

Chytrý, Milan; Tichý, Lubomír; Boublík, Karel; Černý, Tomáš; Douda, Jan; Hájek, Michal; Hájková, Petra; Hédl, Radim; Kočí, Martin; Krahulec, František; Kučera, Tomáš; Landucci, Flavia; Láníková, Deana; Lososová, Zdeňka; Navrátilová, Jana; Petřík, Petr; Preislerová, Zdenka; Řezníčková, Marcela; Roleček, Jan; Sádlo, Jiří; Šumberová, Kateřina; Vítková, Michaela; Zelený, David


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    <dcat:keyword>Czech Republic</dcat:keyword>
    <dcat:keyword>expert system</dcat:keyword>
    <dcat:keyword>phytosociology</dcat:keyword>
    <dcat:keyword>plant community types</dcat:keyword>
    <dcat:keyword>vegetation classification</dcat:keyword>
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    <dct:description>&lt;p&gt;&lt;strong&gt;Expertn&amp;iacute; syst&amp;eacute;m pro automatickou klasifikaci fytocenologick&amp;yacute;ch sn&amp;iacute;mků z Česk&amp;eacute; republiky&amp;nbsp;&lt;/strong&gt;&lt;br&gt; [popis a instrukce v če&amp;scaron;tině jsou uvedeny n&amp;iacute;že]&lt;/p&gt; &lt;p&gt;***************************************************************************************************************&lt;/p&gt; &lt;p&gt;&lt;strong&gt;CzechVeg-ESy&lt;/strong&gt; is an expert system for automatic classification of vegetation plots from the Czech Republic to the vegetation types defined in the monograph &lt;em&gt;Vegetation of the Czech Republic&lt;/em&gt; (&lt;a href="https://www.sci.muni.cz/botany/vegsci/vegetace.php?page=monograph&amp;amp;lang=en"&gt;Chytr&amp;yacute; 2007-2013&lt;/a&gt;). It is delivered in two main versions: The &lt;strong&gt;main version 1 (v1) &lt;/strong&gt;is the original version used for the vegetation classification in that monograph, described in detail in its English Summary (&lt;a href="https://www.sci.muni.cz/botany/chytry/Vegetation-Czech-Rep-Summary.pdf"&gt;Chytr&amp;yacute; 2007&lt;/a&gt;). Its subversions (indicated by dates) contains corrections of minor errors and species nomenclature. This version only classifies vegetation to the phytosociological associations. The &lt;strong&gt;main version 2 (v2)&lt;/strong&gt;&amp;nbsp;uses the same classification system as accepted in the&amp;nbsp;&lt;em&gt;Vegetation of the Czech Republic&lt;/em&gt;, but includes&amp;nbsp;more advanced functions to provide more accurate classification. Moreover, it is hierarchical, performing classification not only to associations but also to alliances and classes (for the plots not classified at lower levels).&lt;/p&gt; &lt;p&gt;Each version is delivered in two variants. The &lt;strong&gt;basic variant &lt;/strong&gt;(CzechVeg-ESy-basic-v1.txt)&amp;nbsp;assigns vegetation plots to associations following their formal definitions created using the Cocktail method (&lt;a href="https://doi.org/10.2307/3236796"&gt;Bruelheide 2000&lt;/a&gt;) modified by &lt;a href="https://www.sci.muni.cz/botany/chytry/Koci_etal2003_JVS.pdf"&gt;Koč&amp;iacute; et al (2003)&lt;/a&gt;.&amp;nbsp;These definitions&amp;nbsp;are based on the presence of sociological species groups and the dominance of selected species. The expert system evaluates individual vegetation plots and assigns them to the associations. A classification process is considerably faster when the basic variant is used, as opposed to the full variant. The &lt;strong&gt;full variant&lt;/strong&gt; (file&amp;nbsp;CzechVeg-ESy-full-v1.txt) performs the same functions as the basic variant, but in addition, it can also assign the plots not classified by formal definitions based on their numerical similarity to the plots that fulfil&amp;nbsp;the requirements of the formal definitions. Most of such plots can be considered as untypical from the phytosociological point of view, i.e. with poor correspondence to any of the defined vegetation types, in most cases because of the lack of ecologically specialized species. The method of similarity-based assignment is the Frequency-Positive Fidelity Index (FPFI) described in &lt;a href="https://www.sci.muni.cz/botany/chytry/Koci_etal2003_JVS.pdf"&gt;Koč&amp;iacute; et al. (2003)&lt;/a&gt; and &lt;a href="https://doi.org/10.1007/s11258-004-5798-8"&gt;Tich&amp;yacute; (2005)&lt;/a&gt;.&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Instructions for using CzechVeg-ESy version 1&lt;/strong&gt;&lt;/p&gt; &lt;ol&gt; &lt;li&gt;Vegetation plots have to be stored in the TURBOVEG 2 program (&lt;a href="https://www.synbiosys.alterra.nl/turboveg/"&gt;https://www.synbiosys.alterra.nl/turboveg/&lt;/a&gt;) with the species list Czechia-Slovakia-2015 (contained in the file&amp;nbsp;TurbovegSlBackup_Czechia_slovakia_2015.zip), which is largely compatible with the older species lists called Czechia-Slovakia-2012 and Central-Europe.&lt;/li&gt; &lt;li&gt;Export plots from&amp;nbsp;TURBOVEG 2 to a CC! file (Export / Other formats / JUICE input files) and import this file to the JUICE program (&lt;a href="https://www.sci.muni.cz/botany/juice/"&gt;https://www.sci.muni.cz/botany/juice/&lt;/a&gt;) using the species list in the file&amp;nbsp;Checklist-Danihelka-et-al-2012-ver-2019-07-06.txt, which converts the plant nomenclature to correspond with the Checklist of vascular plants of the Czech Republic (&lt;a href="http://www.preslia.cz/P123Danihelka.pdf"&gt;Danihelka et al. 2012&lt;/a&gt;).&lt;/li&gt; &lt;li&gt;Select Analysis / Expert system in the JUICE program.&lt;/li&gt; &lt;li&gt;Upload the expert system file (either&amp;nbsp;CzechVeg-ESy-basic-v1.txt or&amp;nbsp;CzechVeg-ESy-full-v1.txt)&amp;nbsp;by pressing Load ES File button.&lt;/li&gt; &lt;li&gt;Modify species nomenclature by pressing the Modify Species Names button.&lt;/li&gt; &lt;li&gt;If there are juvenile species in the herb layer in the plots to be analysed, delete them&amp;nbsp;by pressing Delete Juveniles button.&lt;/li&gt; &lt;li&gt;In some cases, narrow species concepts were changed to broader concepts, resulting in repetitions of the same names in the table. These must be merged using the Merge Same Spec. Names button. This will also merge records of the same species in different vegetation layers because the expert system assumes that each species name is contained only once in the same plot.&lt;/li&gt; &lt;li&gt;When using the full version of the expert system, a threshold similarity value for similarity-based assignment must be specified in the field in the bottom right part of the form. The higher the value, the fewer plots will be assigned, while only those plots will be assigned that have a high similarity to the association. If the threshold value is set to 0, all the plots will be assigned, but some of them may be very dissimilar to the associations which they are assigned to.&lt;/li&gt; &lt;li&gt;Run expert system using the Classify Relev&amp;eacute; button (a plot marked by a previous mouse click will be classified) or Classify [colour] Relev&amp;eacute;s button (all the plots of the selected colour will be assigned).&lt;/li&gt; &lt;li&gt;If a single plot is classified, species groups present in this plot and the assignment of the plot to an association will be shown. If the plot is not classified, no association will be listed. Occasionally, a&amp;nbsp;plot can be assigned to more than one association. If the full version of the expert system is used, the table will contain a list of associations ranked by decreasing similarity to the plot.&lt;/li&gt; &lt;li&gt;If multiple plots are classified, association codes will appear in the header of those plots that were assigned based on the formal definitions. The legends for the codes can be found in a printed version of the&amp;nbsp;&lt;em&gt;Vegetation of the Czech Republic&lt;/em&gt;, in its online version (&lt;a href="https://pladias.cz/en/vegetation/"&gt;https://pladias.cz/en/vegetation/&lt;/a&gt;) or in the expert system txt file. Plots not assigned to any association will be marked with ? and those assigned to more than one association will be marked with +. If the full version of the expert system is used, the output will contain the most similar associations for those plots which have remained unassigned to associations or were assigned to more than one association.&lt;/li&gt; &lt;li&gt;Using the formal definition, the expert system normally assigns some plots of a single vegetation stand to a certain association while other plots of the same stand remain unassigned. This means that the stand consists of patches with species composition typical of the given association and patches with a less typical species composition. If different plots from a single relatively homogeneous stand are assigned to different associations, it is appropriate to interpret the stand as transitional between these associations.&lt;/li&gt; &lt;/ol&gt; &lt;p&gt;This electronic publication of CzechVeg-ESy was supported by the Czech Science Foundation (grant no.&amp;nbsp;17-15168S).&lt;/p&gt; &lt;p&gt;***************************************************************************************************************&lt;/p&gt; &lt;p&gt;&lt;strong&gt;CzechVeg-ESy&lt;/strong&gt; je expertn&amp;iacute; syst&amp;eacute;m pro automatickou klasifikaci fytocenologick&amp;yacute;ch sn&amp;iacute;mků z Česk&amp;eacute; republiky do vegetačn&amp;iacute;ch typů definovan&amp;yacute;ch v monografii&amp;nbsp;&lt;em&gt;Vegetace Česk&amp;eacute; republiky&amp;nbsp;&lt;/em&gt;(&lt;a href="https://www.sci.muni.cz/botany/vegsci/vegetace.php?lang=en&amp;amp;page=monograph"&gt;Chytr&amp;yacute; 2007-2013&lt;/a&gt;). Existuj&amp;iacute; dvě hlavn&amp;iacute; verze tohoto expertn&amp;iacute;ho syst&amp;eacute;mu: &lt;strong&gt;Hlavn&amp;iacute; verze 1 (v1) &lt;/strong&gt;je origin&amp;aacute;ln&amp;iacute; verze použit&amp;aacute; pro klasifikaci v t&amp;eacute;to n&amp;aacute;rodn&amp;iacute; vegetačn&amp;iacute; monografii, kter&amp;aacute; je podrobně popsan&amp;aacute; v jej&amp;iacute; metodick&amp;eacute; kapitole. Jej&amp;iacute; d&amp;iacute;lč&amp;iacute; verze (označen&amp;eacute; datem) obsahuj&amp;iacute; opravy drobn&amp;yacute;ch chyb a nomenklatury druhů. Tato verze klasifikuje fytocenologick&amp;eacute; sn&amp;iacute;mky pouze do fytocenologick&amp;yacute;ch asociac&amp;iacute;. &lt;strong&gt;Hlavn&amp;iacute; verze 2 (v2)&lt;/strong&gt;&amp;nbsp;použ&amp;iacute;v&amp;aacute; stejn&amp;yacute; klasifikačn&amp;iacute; syst&amp;eacute;m, jak&amp;yacute; byl použit ve Vegetaci&amp;nbsp;Česk&amp;eacute; republiky, ale použ&amp;iacute;v&amp;aacute; pokročilej&amp;scaron;&amp;iacute; funkce umožňuj&amp;iacute;c&amp;iacute; přesněj&amp;scaron;&amp;iacute; klasifikaci. Tato verze tak&amp;eacute; prov&amp;aacute;d&amp;iacute; hierarchickou klasifikaci nejen do asociac&amp;iacute;, ale tak&amp;eacute; do svazů a tř&amp;iacute;d (pro sn&amp;iacute;mky nezařazen&amp;eacute; do niž&amp;scaron;&amp;iacute;ch jednotek).&lt;/p&gt; &lt;p&gt;Každ&amp;aacute; verze m&amp;aacute; dvě varianty. &lt;strong&gt;Z&amp;aacute;kladn&amp;iacute; varianta&amp;nbsp;&lt;/strong&gt;(soubor CzechVeg-ESy-basic-v1.txt) přiřazuje fytocenologick&amp;eacute; sn&amp;iacute;mky do asociac&amp;iacute; na z&amp;aacute;kladě jejich form&amp;aacute;ln&amp;iacute;ch definic vytvořen&amp;yacute;ch metodou Cocktail (&lt;a href="https://doi.org/10.2307/3236796"&gt;Bruelheide 2000&lt;/a&gt;) v &amp;uacute;pravě podle pr&amp;aacute;ce &lt;a href="https://www.sci.muni.cz/botany/chytry/Koci_etal2003_JVS.pdf"&gt;Koč&amp;iacute; et al (2003)&lt;/a&gt;. Tyto definice jsou založeny na prezenci sociologick&amp;yacute;ch skupin druhů a dominanci vybran&amp;yacute;ch druhů. Expertn&amp;iacute; syst&amp;eacute;m vyhodnocuje každ&amp;yacute; jednotliv&amp;yacute; fytocenologick&amp;yacute; sn&amp;iacute;mek v datov&amp;eacute;m souboru a řad&amp;iacute; jej do asociace. Klasifikace pomoc&amp;iacute; z&amp;aacute;kladn&amp;iacute; varianty je v&amp;yacute;razně rychlej&amp;scaron;&amp;iacute; než klasifikace pomoc&amp;iacute; pln&amp;eacute; varianty. &lt;strong&gt;Pln&amp;aacute; varianta&amp;nbsp;&lt;/strong&gt;(soubor CzechVeg-ESy-full-v1.txt) zaji&amp;scaron;ťuje stejn&amp;eacute; funkce jako z&amp;aacute;kladn&amp;iacute; varianta, ale nav&amp;iacute;c klasifikuje i sn&amp;iacute;mky neklasifikovan&amp;eacute; form&amp;aacute;ln&amp;iacute;mi definicemi, a to na z&amp;aacute;kladě jejich numerick&amp;eacute; podobnosti ke skupin&amp;aacute;m sn&amp;iacute;mků, kter&amp;eacute; vyhovuj&amp;iacute; podm&amp;iacute;nk&amp;aacute;m form&amp;aacute;ln&amp;iacute;ch definic asociac&amp;iacute;. Vět&amp;scaron;inu takov&amp;yacute;ch sn&amp;iacute;mků lze považovat z fytocenologick&amp;eacute;ho hlediska za netypick&amp;eacute; porosty, tj. takov&amp;eacute;, kter&amp;eacute; plně neodpov&amp;iacute;daj&amp;iacute; definovan&amp;yacute;m vegetačn&amp;iacute;m typům, zpravidla kvůli absenci ekologicky specializovan&amp;yacute;ch druhů. Klasifikace na z&amp;aacute;kladě podobnosti se poč&amp;iacute;t&amp;aacute; pomoc&amp;iacute; indexu FPFI (Frequency-Positive Fidelity Index), kter&amp;yacute; definovali&amp;nbsp;&lt;a href="https://www.sci.muni.cz/botany/chytry/Koci_etal2003_JVS.pdf"&gt;Koč&amp;iacute; et al. (2003)&lt;/a&gt; a&amp;nbsp;&lt;a href="https://doi.org/10.1007/s11258-004-5798-8"&gt;Tich&amp;yacute; (2005)&lt;/a&gt;.&lt;/p&gt; &lt;ol&gt; &lt;li&gt;Fytocenologick&amp;eacute; sn&amp;iacute;mky určen&amp;eacute; k&amp;nbsp;anal&amp;yacute;ze mus&amp;iacute; b&amp;yacute;t uloženy v datab&amp;aacute;zi v&amp;nbsp;programu TURBOVEG 2 (&lt;a href="https://www.synbiosys.alterra.nl/turboveg/"&gt;https://www.synbiosys.alterra.nl/turboveg/&lt;/a&gt;)&amp;nbsp;s druhov&amp;yacute;m seznamem Czechia-Slovakia-2015 (soubor TurbovegSlBackup_Czechia_slovakia_2015.zip), kter&amp;yacute; je kompatibiln&amp;iacute; s druhov&amp;yacute;mi seznamy Czechia-Slovakia-2012 a Central-Europe.&lt;/li&gt; &lt;li&gt;Sn&amp;iacute;mky se exportuj&amp;iacute; z programu&amp;nbsp;TURBOVEG 2 do souboru CC! (Export / Other formats / JUICE input files) a tento soubor se importuje do programu JUICE (&lt;a href="https://www.sci.muni.cz/botany/juice/"&gt;https://www.sci.muni.cz/botany/juice/&lt;/a&gt;) s použit&amp;iacute;m druhov&amp;eacute;ho seznamu v souboru Checklist-Danihelka-et-al-2012-ver-2019-07-06.txt, č&amp;iacute;mž se nomenklatura konvertuje do nomenklatury odpov&amp;iacute;daj&amp;iacute;c&amp;iacute; Seznamu c&amp;eacute;vnat&amp;yacute;ch rostlin květeny Česk&amp;eacute; republiky (&lt;a href="http://www.preslia.cz/P123Danihelka.pdf"&gt;Danihelka et al. 2012&lt;/a&gt;).&lt;/li&gt; &lt;li&gt;V&amp;nbsp;programu JUICE se zvol&amp;iacute; menu Analysis / Expert system.&lt;/li&gt; &lt;li&gt;Tlač&amp;iacute;tkem Load ES File se nahraje do paměti soubor s&amp;nbsp;př&amp;iacute;slu&amp;scaron;n&amp;yacute;m expertn&amp;iacute;m syst&amp;eacute;mem (buď CzechVeg-ESy-basic-v1.txt, nebo&amp;nbsp;CzechVeg-ESy-full-v1.txt).&lt;/li&gt; &lt;li&gt;Tlač&amp;iacute;tkem Modify Species Names se uprav&amp;iacute; nomenklatura druhů tak, aby odpov&amp;iacute;dala nomenklatuře použ&amp;iacute;van&amp;eacute; expertn&amp;iacute;m syst&amp;eacute;mem.&lt;/li&gt; &lt;li&gt;Obsahuj&amp;iacute;-li sn&amp;iacute;mky určen&amp;eacute; k&amp;nbsp;anal&amp;yacute;ze juveniln&amp;iacute; dřeviny v&amp;nbsp;bylinn&amp;eacute;m patru, je potřeba je vymazat tlač&amp;iacute;tkem Delete Juveniles.&lt;/li&gt; &lt;li&gt;Při převodu nomenklatury se v&amp;nbsp;někter&amp;yacute;ch př&amp;iacute;padech převedlo už&amp;scaron;&amp;iacute; pojet&amp;iacute; druhů na &amp;scaron;ir&amp;scaron;&amp;iacute;, č&amp;iacute;mž vznikly v&amp;nbsp;tabulce druhov&amp;eacute; &amp;uacute;daje veden&amp;eacute; pod stejn&amp;yacute;mi jm&amp;eacute;ny. Ty je potřeba sloučit tlač&amp;iacute;tkem Merge Same Spec. Names. Přitom se slouč&amp;iacute; i &amp;uacute;daje stejn&amp;eacute;ho druhu v&amp;nbsp;různ&amp;yacute;ch patrech, protože expertn&amp;iacute; syst&amp;eacute;m předpokl&amp;aacute;d&amp;aacute; jen jeden v&amp;yacute;skyt stejn&amp;eacute;ho druhov&amp;eacute;ho jm&amp;eacute;na v&amp;nbsp;jednom sn&amp;iacute;mku.&lt;/li&gt; &lt;li&gt;Pokud je použ&amp;iacute;v&amp;aacute;na pln&amp;aacute; (Full) verze expertn&amp;iacute;ho syst&amp;eacute;mu, je potřeba v&amp;nbsp;ok&amp;eacute;nku vpravo dole nastavit prahovou hodnotu podobnosti pro přiřazov&amp;aacute;n&amp;iacute; sn&amp;iacute;mků k&amp;nbsp;asociac&amp;iacute;m pomoc&amp;iacute; podobnosti. Č&amp;iacute;m vy&amp;scaron;&amp;scaron;&amp;iacute; hodnota, t&amp;iacute;m m&amp;eacute;ně sn&amp;iacute;mků se přiřad&amp;iacute;, ale přiřad&amp;iacute; se ty, kter&amp;eacute; se dan&amp;eacute; asociaci v&amp;iacute;ce podobaj&amp;iacute;. Při hodnotě 0 se přiřad&amp;iacute; v&amp;scaron;echny sn&amp;iacute;mky, ale někter&amp;eacute; budou dan&amp;eacute; asociaci velmi nepodobn&amp;eacute;.&lt;/li&gt; &lt;li&gt;Spust&amp;iacute; se běh expertn&amp;iacute;ho syst&amp;eacute;mu, a to buď tlač&amp;iacute;tkem Classify Relev&amp;eacute; (bude se klasifikovat jeden sn&amp;iacute;mek, na kter&amp;yacute; se předt&amp;iacute;m kliklo my&amp;scaron;&amp;iacute;) nebo Classify [colour] Relev&amp;eacute;s (budou se klasifikovat v&amp;scaron;echny sn&amp;iacute;mky vybran&amp;eacute; barvy).&lt;/li&gt; &lt;li&gt;Při klasifikaci jednoho sn&amp;iacute;mku se zobraz&amp;iacute; v&amp;nbsp;tabulce druhov&amp;eacute; skupiny, jejich zastoupen&amp;iacute; v&amp;nbsp;dan&amp;eacute;m sn&amp;iacute;mku a asociace, do kter&amp;eacute; byl sn&amp;iacute;mek přiřazen pomoc&amp;iacute; form&amp;aacute;ln&amp;iacute; definice. Pokud přiřazen nebyl, nezobraz&amp;iacute; se ž&amp;aacute;dn&amp;aacute; asociace.&amp;nbsp;Sn&amp;iacute;mek může b&amp;yacute;t přiřazen i do v&amp;iacute;ce než jedn&amp;eacute; asociace. Při použit&amp;iacute; pln&amp;eacute; verze expertn&amp;iacute;ho syst&amp;eacute;mu se do tabulky vyp&amp;iacute;&amp;scaron;&amp;iacute; asociace v&amp;nbsp;pořad&amp;iacute; klesaj&amp;iacute;c&amp;iacute; podobnosti ke sn&amp;iacute;mku, a to u těch sn&amp;iacute;mků, kter&amp;eacute; nebyly přiřazeny do ž&amp;aacute;dn&amp;eacute; asociace nebo byly přiřazeny do v&amp;iacute;ce než jedn&amp;eacute; asociace.&lt;/li&gt; &lt;li&gt;Při klasifikaci v&amp;iacute;ce sn&amp;iacute;mků se do z&amp;aacute;hlav&amp;iacute; tabulky vep&amp;iacute;&amp;scaron;&amp;iacute; k&amp;oacute;dy asociac&amp;iacute; u těch sn&amp;iacute;mků, kter&amp;eacute; se přiřadily na z&amp;aacute;kladě form&amp;aacute;ln&amp;iacute;ch definic. Převod k&amp;oacute;dů na jm&amp;eacute;na asociac&amp;iacute; lze dohledat v&amp;nbsp;ti&amp;scaron;těn&amp;eacute; verzi&amp;nbsp;&lt;em&gt;Vegetace Česk&amp;eacute; republiky&lt;/em&gt;, v jej&amp;iacute; online verzi (&lt;a href="https://pladias.cz/en/vegetation/"&gt;https://pladias.cz/vegetation/&lt;/a&gt;) nebo v&amp;nbsp;textov&amp;eacute;m souboru expertn&amp;iacute;ho syst&amp;eacute;mu. U sn&amp;iacute;mků, kter&amp;eacute; se nepřiřadily k&amp;nbsp;ž&amp;aacute;dn&amp;eacute; asociaci, se v z&amp;aacute;hlav&amp;iacute; zobraz&amp;iacute; znak ?. U sn&amp;iacute;mků přiřazen&amp;yacute;ch do v&amp;iacute;ce než jedn&amp;eacute; asociace se zobraz&amp;iacute; znak +. Při použit&amp;iacute; pln&amp;eacute; verze expertn&amp;iacute;ho syst&amp;eacute;mu se do tabulky vyp&amp;iacute;&amp;scaron;&amp;iacute; nejpodobněj&amp;scaron;&amp;iacute; asociace u těch sn&amp;iacute;mků, kter&amp;eacute; nebyly přiřazeny do ž&amp;aacute;dn&amp;eacute; asociace nebo byly přiřazeny do v&amp;iacute;ce než jedn&amp;eacute; asociace.&lt;/li&gt; &lt;li&gt;Expertn&amp;iacute; syst&amp;eacute;m běžně přiřazuje pomoc&amp;iacute; form&amp;aacute;ln&amp;iacute;ch definic někter&amp;eacute; sn&amp;iacute;mky v&amp;nbsp;porostu nebo lok&amp;aacute;lně rozli&amp;scaron;ovan&amp;eacute;m rostlinn&amp;eacute;m společenstvu do určit&amp;eacute; asociace a jin&amp;eacute; do ž&amp;aacute;dn&amp;eacute; asociace, což znamen&amp;aacute;, že se porost skl&amp;aacute;d&amp;aacute; z&amp;nbsp;m&amp;iacute;st s&amp;nbsp;druhov&amp;yacute;m složen&amp;iacute;m typick&amp;yacute;m pro danou asociaci a m&amp;iacute;st s&amp;nbsp;m&amp;eacute;ně typick&amp;yacute;m druhov&amp;yacute;m složen&amp;iacute;m. Pokud expertn&amp;iacute; syst&amp;eacute;m přiřad&amp;iacute; různ&amp;eacute; sn&amp;iacute;mky z&amp;nbsp;jednoho relativně homogenn&amp;iacute;ho porostu k&amp;nbsp;různ&amp;yacute;m asociac&amp;iacute;m, je vhodn&amp;eacute; porost interpretovat jako přechodn&amp;yacute; mezi těmito asociacemi.&lt;/li&gt; &lt;/ol&gt; &lt;p&gt;Tato elektronick&amp;aacute; publikace expertn&amp;iacute;ho syst&amp;eacute;mu CzechVeg-ESy byla podpořena Grantovou agenturou Česk&amp;eacute; republiky (grant 17-15168S).&lt;/p&gt;</dct:description>
    <dct:description>{"references": ["Bruelheide, H. (2000). A new measure of fidelity and its application to defining species groups. Journal of Vegetation Science, 11, 167-178. https://doi.org/10.2307/3236796", "Chytr\u00fd, M. (ed.) (2007-2013). Vegetace \u010cesk\u00e9 republiky 1-4 / Vegetation of the Czech Republic 1-4. Praha, CZ: Academia. https://www.sci.muni.cz/botany/vegsci/vegetace.php?lang=en&amp;page=monograph", "Chytr\u00fd, M. (2007). Project Vegetation of the Czech Republic: Preface and summary of methods. In: Chytr\u00fd, M. (ed.), Vegetace \u010cesk\u00e9 republiky 1. Travinn\u00e1 a ke\u0159\u00ed\u010dkov\u00e1 vegetace / Vegetation of the Czech Republic 1. Grassland and heathland vegetation, pp. 35-52. Praha, CZ: Academia. https://www.sci.muni.cz/botany/chytry/Vegetation-Czech-Rep-Summary.pdf", "Danihelka, J., Chrtek, J. Jr., &amp; Kaplan, Z. (2012) Checklist of vascular plants of the Czech Republic. Preslia, 84, 647\u2013811.", "Ko\u010d\u00ed, M., Chytr\u00fd, M., &amp; Tich\u00fd, L. (2003). Formalized reproduction of an expert-based phytosociological classification: A case study of subalpine tall-forb vegetation. Journal of Vegetation Science, 14, 601\u2013610. https://doi.org/10.1111/j.1654-1103.2003.tb02187.x - https://www.sci.muni.cz/botany/chytry/Koci_etal2003_JVS.pdf", "Tich\u00fd, L. (2005). New similarity indices for the assignment of relev\u00e9s to the vegetation units of an existing phytosociological classification. Plant Ecology, 179, 67\u201372. https://doi.org/10.1007/s11258-004-5798-8"]}</dct:description>
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