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Auteur Olha Chusova |
Documents disponibles écrits par cet auteur (2)
Affiner la rechercheEcological Indicator Values for Europe (EIVE) 1.0 / Jurgen Dengler in Vegetation Classification and Survey, 4 (2023)
Titre : Ecological Indicator Values for Europe (EIVE) 1.0 Type de document : Imprimé Auteurs : Jurgen Dengler ; Florian Jansen ; Olha Chusova ; Elisabeth Hüllbusch ; Michael P. Nobis ; Koenraad Van Meerbeek ; Irena Axmanová ; Hans Henrik Kehlet Bruun ; Milan Chytrý (1967-) ; Riccardo Guarino ; Gerhard Karrer ; Karlien Moeys ; Thomas Raus ; Manuel Jonas Steinbauer ; Lubomír Tichý ; Torbjörn Tyler ; Ketevan Batsatsashvili ; Claudia Biţa-Nicolae ; Yakiv Didukh ; Martin Diekmann ; Thorsten Englisch ; Eduardo Fernández-Pascual ; Dieter Frank ; Ulrich-Hans Graf ; Michal Hájek (1974-) ; Sven D. Jelaska ; Borja Jiménez-Alfaro ; Philippe Julve (1954-) ; Giorgi Nakhutsrishvili ; Wim A. Ozinga ; Eszter Ruprecht ; Urban Silc ; Jean-Paul Theurillat ; François Gillet (1959-) Année de publication : 2023 Article en page(s) : 7-29 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Indicateur biologique Résumé : Aims: To develop a consistent ecological indicator value system for Europe for five of the main plant niche dimensions: soil moisture (M), soil nitrogen (N), soil reaction (R), light (L) and temperature (T). Study area: Europe (and closely adjacent regions). Methods: We identified 31 indicator value systems for vascular plants in Europe that contained assessments on at least one of the five aforementioned niche dimensions. We rescaled the indicator values of each dimension to a continuous scale, in which 0 represents the minimum and 10 the maximum value present in Europe. Taxon names were harmonised to the Euro+Med Plantbase. For each of the five dimensions, we calculated European values for niche position and niche width by combining the values from the individual EIV systems. Using T values as an example, we externally validated our European indicator values against the median of bioclimatic conditions for global occurrence data of the taxa. Results: In total, we derived European indicator values of niche position and niche width for 14,835 taxa (14,714 for M, 13,748 for N, 14,254 for R, 14,054 for L, 14,496 for T). Relating the obtained values for temperature niche position to the bioclimatic data of species yielded a higher correlation than any of the original EIV systems (r = 0.859). The database: The newly developed Ecological Indicator Values for Europe (EIVE) 1.0, together with all source systems, is available in a flexible, harmonised open access database. Conclusions: EIVE is the most comprehensive ecological indicator value system for European vascular plants to date. The uniform interval scales for niche position and niche width provide new possibilities for ecological and macroecological analyses of vegetation patterns. The developed workflow and documentation will facilitate the future release of updated and expanded versions of EIVE, which may for example include the addition of further taxonomic groups, additional niche dimensions, external validation or regionalisation. Identifiant : DOI : 10.3897/VCS.98324 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155708
in Vegetation Classification and Survey > 4 (2023) . - 7-29Dengler, J., Jansen, F., Chusova, O., Hüllbusch, E., Nobis, M.P., Van Meerbeek, K., Axmanová, I., Kehlet Bruun, H.H., Chytrý, M., Guarino, R., Karrer, G., Moeys, K., Raus, T., Steinbauer, M.J., Tichý, L., Tyler, T., Batsatsashvili, K., Biţa-Nicolae, C., Didukh, Y., Diekmann, M., Englisch, T., Fernández-Pascual, E., Frank, D., Graf, U.H., Hájek, M., Jelaska, S.D., Jiménez-Alfaro, B., Julve, P., Nakhutsrishvili, G., Ozinga, W.A., Ruprecht, E., Silc, U., Theurillat, J.P., Gillet, F., 2023 . Ecological Indicator Values for Europe (EIVE) 1.0. Vegetation Classification and Survey, 4: 7-29.Documents numériques
article (2023)Adobe Acrobat PDF
Titre : Mean ecological indicator values: use EIVE but no cover-weighting Type de document : Imprimé Auteurs : Grzegorz Ostrowski ; Severin Aicher ; Agniezka Mankiewicz ; Olha Chusova ; Iwona Dembicz ; Stefan Widmer ; Jurgen Dengler Année de publication : 2025 Article en page(s) : 57-67 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Indicateur biologique Résumé : Aims: To test the predictive power of mean ecological indicator values (EIVs) based on different EIV systems and weighting approaches. Study area: Preda in Grisons, Switzerland. Methods: We used three regional datasets of vegetation plots accompanied with measured soil pH values or mean annual near soil air temperature. We calculated mean EIVs for each plot with four EIV systems that cover the region, namely “Ellenberg”, “Landolt”, “Tichý” and the Ecological Indicator Values for Europe (EIVE), combined with four weighting approaches (unweighted, cover-weighted, square-root cover-weighted, inverse niche width weighted). We correlated the mean EIVs of each combination with the measured environmental variables and compared the mean Pearson r values. Results: No cover-weighting (0.78) was slightly better than square-root cover-weighting (0.75) and clearly better than full cover-weighting (0.68). In the two EIV systems providing a niche width measure (EIVE and “Landolt”), inverse niche weighting gave similar results than no weighting. Mean EIVE values (0.76) had significantly stronger correlations than “Tichý” (0.73), while the differences to “Ellenberg” (0.75) and “Landolt” (0.71) were not significant. Conclusions: The results suggest that even within the definition areas of two long-established EIV systems (“Ellenberg”, “Landolt”), EIVE gives at least as good predictions as these and significantly better than “Tichý”. Likewise, any type of cover-weighting reduces the predictive power of mean EIVs. Both findings could be the consequence of the statistical principle “wisdom of the crowd”, according to which the average estimate of several sources (be it regional scientists or plant species) is usually better than the estimate of one or few experts. Accordingly, EIVE currently is the best choice for mean EIVs in Europe, and no cover-weighting should be applied. We recommend that similar studies should be undertaken in other regions and for other niche dimensions. Identifiant : DOI : 10.3897/VCS.134800 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154516
in Vegetation Classification and Survey > 6 (2025) . - 57-67Ostrowski, G., Aicher, S., Mankiewicz, A., Chusova, O., Dembicz, I., Widmer, S., Dengler, J., 2025 . Mean ecological indicator values: use EIVE but no cover-weighting. Vegetation Classification and Survey, 6: 57-67.Documents numériques
Article (2025)Adobe Acrobat PDF
