Publikationen
Publikationen in Fachzeitschriften:
24. Tkach, N., Nobis, M., Schneider, J., Becher, H., Winterfeld, G., Jacobs, S.W.L., Röser, M. 2021. Molecular phylogenetics and micromorphology of Australasian Stipeae (Poaceae, subfamily Pooideae), and the interrelation of whole-genome duplication and evolutionary radiations in this grass tribe. Frontiers in Plant Science 11: 2279. https://doi.org/10.3389/fpls.2020.630788
23. Favre, A., Pringle, J.S., Heckenhauer, J., Kozuharova, E., Gao, Q., Lemmon, E.M., Lemmon, A.R., Sun, H., Tkach, N., Gebauer, S., Sun, S.-S., Fu, P.-C. 2020. Phylogenetic relationships and sectional delineation within Gentiana (Gentianaceae). Taxon 69(6): 1221–1238. https://doi.org/10.1002/tax.12405
22. Ebersbach, J., Tkach, N., Röser, M., Favre, A. 2020. The role of hybridisation in the making of the species-rich arctic-alpine genus Saxifraga (Saxifragaceae). Diversity 12: 440. https://doi.org/10.3390/d12110440
21. Röser, M., Tkach, N. 2020. Parapholis cylindrica – a nomenclatural correction. Schlechtendalia 37: 27–29. https://public.bibliothek.uni-halle.de/index.php/schlechtendalia/article/view/2069
20. Tkach, N., Schneider, J., Döring, E., Wölk, A., Hochbach, A., Nissen, J., Winterfeld, G., Meyer, S., Gabriel, J., Hoffmann, M.H., Röser, M. 2020. Phylogenetic lineages and the role of hybridization as driving force of evolution in grass supertribe Poodae. Taxon 62(2): 234–277. https://doi.org/10.1002/tax.12204 .
19. Gabriel, J., Tkach, N., Röser, M. 2020. Recovery of the type specimen of Avena breviaristata, an endemic Algerian grass species collected only once (1882): morphology, taxonomy and botanical history. Taxon 69(1): 142-152. https://doi.org/10.1002/tax.12187
18. Borsch, T., Stevens, A.-D., Häffner, E., Güntsch, A., Berendsohn, W.G., Appelhans, M.S., Barilaro, C., Beszteri, B., Blattner, F.R., Bossdorf, O., Dalitz, H., Dressler, S., Duque-Thüs, R., Esser, H.-J., Franzke, A., Goetze, D., Grein, M., Grünert, U., Hellwig, F., Hentschel, J., Hörandl, E., Janßen, T., Jürgens, N., Kadereit, G., Karisch, T., Koch, M.A., Müller, F., Müller, J., Ober, D., Porembski, S., Poschlod, P., Printzen, C., Röser, M., Sack, P., Schlüter, P., Schmidt, M., Schnittler, M., Scholler, M., Schultz, M., Seeber, E., Simmel, J., Stiller, M., Thiv, M., Thüs, H., Tkach, N., Triebel, D., Warnke, U., Weibulat, T., Wesche, K., Yurkov, A., Zizka, G. 2020. A complete digitization of German herbaria is possible, sensible and should be started now. Research Ideas and Outcomes 6: e50675. https://doi.org/10.3897/rio.6.e50675
17. Tkach, N., Braun, U., Röser, M. 2019. Alexander von Humboldts und Aimé Bonplands Pflanzen im Herbarium der Universität Halle-Wittenberg. Humboldt im Netz 20(39): 45–52. doi: http://dx.doi.org/10.18443/287
16. Naychov, Z.D., Tkach, N., Favre, A. & Kozhuharova, E.K. 2019. Saxifraga scardica (Saxifragaceae) – a new record for the Bulgarian flora. Phytologia Balcanica 25(2): 169–173. http://www.bio.bas.bg/~phytolbalcan/PDF/25_2/PhytolBalcan_25-2_07_Naychov_&_al.pdf
15. Tkach, N., Taylor, C., Braun, U. 2019. Nomenclature and identity of Palicourea moritziana. Schlechtendalia 36: 97–99. http://public.bibliothek.uni-halle.de/index.php/schlechtendalia/article/view/1822
14. Tkach, N., Röser, M., Suchan, T., Cieślak, E., Schönswetter, P., Ronikier, M. 2019. Contrasting evolutionary origins of two mountain endemics: Saxifraga wahlenbergii (Western Carpathians) and S. styriaca (Eastern Alps). BMC Evolutionary Biology 19:18. https://doi.org/10.1186/s12862-019-1355-x
13. Heuchert, B., Braun, U., Tkach, N., Marx, D. & Röser, M. 2017. Biography of D. F. L. von Schlechtendal and type material of his new taxa preserved in the herbarium of Martin Luther University Halle-Wittenberg (HAL) and other botanical collections. Schlechtendalia 31: 1–143. http://public.bibliothek.uni-halle.de/index.php/schlechtendalia/article/view/664
12. Ebersbach, J., Muellner-Riehl, A.N., Michalak, I., Tkach, N., Hoffmann, M.H., Röser, M., Sun, H., Favre, A. 2017. In and out of Tibet: divergence time estimation and historical biogeography of the large arctic-alpine genus Saxifraga L. Journal of Biogeography 44: 900–910. https://doi.org/10.1111/jbi.12899
11. Tkach, N., Heuchert, B., Krüger, C., Heklau, H., Marx, D., Braun, U., Röser, M. 2016. Type material in the herbarium of the Martin Luther University Halle-Wittenberg of species based on collections from Alexander von Humboldt’s American expedition between 1799 and 1804 in its historical context. Schlechtendalia 29: 1–107. http://public.bibliothek.uni-halle.de/index.php/schlechtendalia/article/view/656
10. Tkach, N., Röser, M., Miehe, G., Muellner-Riehl, A.N., Ebersbach, J., Favre, A., Hoffmann, M.H. 2015. Molecular phylogenetics, morphology and a revised classification of the complex genus Saxifraga (Saxifragaceae). Taxon 64: 1159–1187. https://doi.org/10.12705/646.4
9. Tkach, N., Röser, M., Hoffmann, M.H. 2015. Molecular phylogeny, character evolution and systematics of the genus Micranthes (Saxifragaceae). Botanical Journal of the Linnean Society 178: 47–66. https://doi.org/10.1111/boj.12272
8. Emadzade, K., Lebmann, M.J., Hoffmann, M.H., Tkach, N., Lone, F.A., Hörandl, E. 2015. Phylogenetic relationships and evolution of high mountain buttercups (Ranunculus) in North America and Central Asia. 2015. Perspectives in Plant Ecology, Evolution and Systematics: 17: 131–141. https://doi.org/10.1016/j.ppees.2015.02.001
7. Tkach, N., Braun, U., Röser, M. 2014. Correspondence of D.F.L. von Schlechtendal in the herbarium of the University Halle-Wittenberg, Germany (HAL). Schlechtendalia 28: 29–34. http://public.bibliothek.uni-halle.de/index.php/schlechtendalia/article/view/1442
6. Tkach, N., Ree, R., Kuss, P. Röser, M., Hoffmann, M.H. 2014. High mountain origin, phylogenetics, evolution, and niche conservatism of arctic lineages in the hemiparasitic genus Pedicularis (Orobanchaceae). Molecular Phylogenetics and Evolution 76C: 75–92. https://doi.org/10.1016/j.ympev.2014.03.004
5. Hoffmann, M.H., von Hagen, K.B., Hörandl, E., Röser, M., Tkach, N. 2010. Sources of the arctic flora: Origins of arctic species in Ranunculus and related genera. International Journal of Plant Sciences 171(1): 90–106. https://doi.org/10.1086/647918
4. Stordeur, R., Braun, U., Tkach, N. 2010. Titov: Mycocaliciale Pilze der Holarktis – Übersetzung der Bestimmungsschlüssel und Beschreibungen neuer Arten. Herzogia 23 (1): 19–67.
3. Tkach, N.V., Hoffmann, M.H., Röser, M., von Hagen, K.B. 2008. Temporal patterns of evolution in the Arctic explored in Artemisia L. (Asteraceae) lineages of different age. Plant Ecology and Diversity 1(2): 161–169. https://doi.org/10.1080/17550870802331912
2. Tkach, N.V., Hoffmann, M.H., Röser, M., Korobkov, A.A., von Hagen, K.B. 2008. Parallel evolutionary patterns in multiple lineages of arctic Artemisia L. (Asteraceae). Evolution 62: 184–198. https://doi.org/10.1111/j.1558-5646.2007.00270.x
1. Tkach, N.V., Röser, M., Hoffmann, M.H. 2008. Range size variation and diversity distribution in the vascular plant flora of the Eurasian Arctic. Organisms, Diversity and Evolution 8: 251–266. https://doi.org/10.1016/j.ode.2007.11.001