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Auteur Ilona Knollova |
Documents disponibles écrits par cet auteur (3)
Affiner la rechercheEllenberg-type indicator values for European vascular plant species / Lubomír Tichý in Journal of vegetation science, 34 (2023)
Titre : Ellenberg-type indicator values for European vascular plant species Type de document : Numérique Auteurs : Lubomír Tichý ; Irena Axmanová ; Jurgen Dengler ; Riccardo Guarino ; Florian Jansen ; Gabriele Midolo ; Michael P. Nobis ; Koenraad Van Meerbeek ; Svetlana Acic ; Fabio Attorre ; Erwin Bergmeier ; Idoia Biurrun ; Gianmaria Bonari ; Helge Bruelheide ; Juan Antonio Campos ; Andraz Carni ; Alessandro Chiarucci ; Mirjana Ćuk ; Renata Ćušterevska ; Yakiv Didukh ; Daniel Dítě ; Zuzana Dítě ; Tetiana Dziuba ; Giuliano Fanelli ; Eduardo Fernández-Pascual ; Emmanuel Garbolino ; Rosario G. Gavilán ; Jean-Claude Gégout ; Ulrich-Hans Graf ; Behlül Güler ; Michal Hájek (1974-) ; Stephan Hennekens ; Ute Jandt ; Anni Jašková ; Borja Jiménez-Alfaro ; Philippe Julve (1954-) ; Stephan Kambach ; Dirk Nikolaus Karger ; Gerhard Karrer ; Ali Kavgaci ; Ilona Knollova ; Anna kuzemko ; Filip Küzmič ; Flavia Landucci ; Attila Lengyel ; Jonathan Lenoir ; Marceno Corrado ; Jesper Erenskjold Moeslund ; Pavel Novák ; Aaron Pérez-Haase ; Tomáš Peterka ; Remigiusz Pielech ; Sandro Pignatti (1930-) ; Valerijus Rašomavičius ; Solvita Rusina ; Arne Saatkamp ; Urban Silc ; Zeljko Skvorc ; Jean-Paul Theurillat ; Thomas Wohlgemuth ; Milan Chytrý (1967-) Année de publication : 2023 Article en page(s) : e13168 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Indicateur biologique Résumé : Aims
Ellenberg-type indicator values are expert-based rankings of plant species according to their ecological optima on main environmental gradients. Here we extend the indicator-value system proposed by Heinz Ellenberg and co-authors for Central Europe by incorporating other systems of Ellenberg-type indicator values (i.e., those using scales compatible with Ellenberg values) developed for other European regions. Our aim is to create a harmonized data set of Ellenberg-type indicator values applicable at the European scale.
Methods
We collected European data sets of indicator values for vascular plants and selected 13 data sets that used the nine-, ten- or twelve-degree scales defined by Ellenberg for light, temperature, moisture, reaction, nutrients and salinity. We compared these values with the original Ellenberg values and used those that showed consistent trends in regression slope and coefficient of determination. We calculated the average value for each combination of species and indicator values from these data sets. Based on species’ co-occurrences in European vegetation plots, we also calculated new values for species that were not assigned an indicator value.
Results
We provide a new data set of Ellenberg-type indicator values for 8908 European vascular plant species (8168 for light, 7400 for temperature, 8030 for moisture, 7282 for reaction, 7193 for nutrients, and 7507 for salinity), of which 398 species have been newly assigned to at least one indicator value.
Conclusions
The newly introduced indicator values are compatible with the original Ellenberg values. They can be used for large-scale studies of the European flora and vegetation or for gap-filling in regional data sets. The European indicator values and the original and taxonomically harmonized regional data sets of Ellenberg-type indicator values are available in the Supporting Information and the Zenodo repository.Identifiant : DOI : 10.1111/jvs.13168 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155707
in Journal of vegetation science > 34 (2023) . - e13168Tichý, Lubomír, Axmanová, Irena, Dengler, Jurgen, Guarino, Riccardo, Jansen, Florian, Midolo, Gabriele, Nobis, Michael P., Van Meerbeek, Koenraad, Acic, Svetlana, Attorre, Fabio, Bergmeier, Erwin, Biurrun, Idoia, Bonari, Gianmaria, Bruelheide, Helge, Campos, Juan Antonio, Carni, Andraz, Chiarucci, Alessandro, Ćuk, Mirjana, Ćušterevska, Renata, Didukh, Yakiv, Dítě, Daniel, Dítě, Zuzana, Dziuba, Tetiana, Fanelli, Giuliano, Fernández-Pascual, Eduardo, Garbolino, Emmanuel, Gavilán, Rosario G., Gégout, Jean-Claude, Graf, Ulrich-Hans, Güler, Behlül, Hájek, Michal (1974-), Hennekens, Stephan, Jandt, Ute, Jašková, Anni, Jiménez-Alfaro, Borja, Julve, Philippe (1954-), Kambach, Stephan, Karger, Dirk Nikolaus, Karrer, Gerhard, Kavgaci, Ali, Knollova, Ilona, kuzemko, Anna, Küzmič, Filip, Landucci, Flavia, Lengyel, Attila, Lenoir, Jonathan, Corrado, Marceno, Moeslund, Jesper Erenskjold, Novák, Pavel, Pérez-Haase, Aaron, Peterka, Tomáš, Pielech, Remigiusz, Pignatti, Sandro (1930-), Rašomavičius, Valerijus, Rusina, Solvita, Saatkamp, Arne, Silc, Urban, Skvorc, Zeljko, Theurillat, Jean-Paul, Wohlgemuth, Thomas, Chytrý, Milan (1967-) 2023 Ellenberg-type indicator values for European vascular plant species. Journal of vegetation science, 34: e13168.Documents numériques
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Titre : Invasions by alien plants in the Czech Republic : a quantitative assessment across habitats Type de document : Numérique Auteurs : Milan Chytrý (1967-) ; Petr Pyšek ; Lubomír Tichý ; Ilona Knollova ; Jiří Danihelka (1968-) Année de publication : 2005 Article en page(s) : 339-354 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Résumé : Occurrence of alien plant species in all the major habitats in the Czech Republicwas analysed using a data set of 20,468 vegetation plots, classified into 32 habitats according to the EUNIS classification. The plots contain on average 9.0% archaeophytes and 2.3% neophytes; for neophytes, this proportion is much smaller than 26.8% reported for the total flora of the country. Most neophytes are found in a few habitats: only 5.6% of them were recorded in more than ten habitats. By contrast, archaeophytes, and especially native species, tend to occur in a broader range of habitats. Highest numbers of aliens were found on arable land, in annual synantropic vegetation, trampled habitats and anthropogenic tall-forb stands. These habitats contain on average 22–56% archaeophytes and 4.4–9.6% neophytes. Neophytes are also common in artificial broadleaved forestry plantations; they also tend to make up a high percentage of the cover in wet tall-forb stands, but are represented by fewer species there. Entirely or nearly free of aliens are plots located in raised bogs, alpine grasslands, alpine and subalpine scrub and natural coniferous woodlands. Correlations between the number of archaeophytes or neophytes and the number of native species, calculated with habitat mean values, were non-significant, but there was a positive correlation between the numbers of archaeophytes and neophytes. The ratio of archaeophytes to neophytes was high in semi-natural dry and mesic grasslands and low in disturbed habitats with woody vegetation, such as artificial broadleaved forestry plantations, forest clearings and riverine willow stands. When individual plots were compared separately within habitats, the relationships between the number of archaeophytes, neophytes and native species were mostly positive. This result does not support the hypothesis that species-rich communities are less invasible, at least at the scale of vegetation plots, i.e. 100–102 m2. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142460
in Preslia > 77 (2005) . - 339-354Chytrý, Milan (1967-), Pyšek, Petr, Tichý, Lubomír, Knollova, Ilona, Danihelka, Jiří (1968-) 2005 Invasions by alien plants in the Czech Republic : a quantitative assessment across habitats. Preslia, 77: 339-354.Documents numériques
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Titre : Maps of the level of invasion of the Czech Republic by alien plants Type de document : Numérique Auteurs : Milan Chytrý (1967-) ; Jan Wild ; Petr Pyšek ; Lubomír Tichý ; Jiří Danihelka (1968-) ; Ilona Knollova Année de publication : 2009 Article en page(s) : 187-207 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
[CBNPMP-Géographique] République TchèqueMots-clés : Picea abies (L.) Karsten Pinus sylvestris L. Résumé : A series of maps showing the level of invasion of the Czech Republic by alien plants was developed based on a quantitative assessment of the level of invasion of 35 terrestrial habitat types at different altitudes. The levels of invasion were quantified for 18,798 vegetation plots, using two measures: proportion of the species that are aliens and total cover of alien species. Separate assessments were made for archaeophytes and neophytes. Within each habitat, the level of invasion was related to altitude using generalized linear models. The level of invasion, depending on the measure used, decreased with altitude in 16 out of 20 habitats for archaeophytes and 18 out of 23 for neophytes. In two habitats, one measure of the level of invasion increased with altitude for archaeophytes. The values of the level of invasion predicted by generalized linear models for particular combinations of habitats and altitudes were projected onto a land-cover map and digital elevation map of the country. Four maps showing the level of invasion were produced, based on the proportion of the species that are archaeophytes or neophytes, and cover of archaeophytes and neophytes. The maps show that both archaeophytes and neophytes are most common in lowland agricultural and urban areas, whereas they are sparsely represented in mountainous areas. At middle altitudes, agricultural areas are more invaded than forested areas. Outside agricultural and urban areas, high levels of invasion are found especially in lowland sandy areas and river corridors. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142446
in Preslia > 81 (2009) . - 187-207Chytrý, Milan (1967-), Wild, Jan, Pyšek, Petr, Tichý, Lubomír, Danihelka, Jiří (1968-), Knollova, Ilona 2009 Maps of the level of invasion of the Czech Republic by alien plants. Preslia, 81: 187-207.Documents numériques
Article (2009)URL
