Publikationen
Publikationen in Fachzeitschriften:
40. Tkach, N., Winterfeld, G., Hoffmann, M.H., Röser, M. 2025. Genome size variation in the Poaceae supertribe Poodae, the major grass lineage of temperate climates (tribes Aveneae, Festuceae and Poeae). Plant Systematics and Evolution 311: 24. https://doi.org/10.1007/s00606-025-01949-y
39. Winterfeld, G., Tkach, N., Röser, M. 2025. Reductional dysploidy and genome size diversity in Pooideae, the largest subfamily of grasses (Poaceae). Plant Systematics and Evolution 311: 18. https://doi.org/10.1007/s00606-025-01946-1
38. Winterfeld, G., Tkach, N., Röser, M. 2025. Genome size variation and whole‑genome duplications in the monocot order Poales. Plant Systematics and Evolution 331: 5. https://doi.org/10.1007/s00606-024-01933-y
37. Tkach, N., Winterfeld, G., Röser, M. 2025. Genome sizes of grasses (Poaceae), chromosomal evolution, paleogenomics and the ancestral grass karyotype (AGK). Plant Systematics and Evolution 331: 4. https://doi.org/10.1007/s00606-024-01934-x
36. Kosak, K., Heklau, H., Wagner, E. †, Tkach, N., Röser, M. 2025. Botanischer Wissenstransfer in Briefen des 19. Jahrhunderts. Die Briefe des deutschen Botanikers Ernst Heinrich Friedrich Meyer (1791–1858) an Diederich Franz Leonhard von Schlechtendal (1794–1866). Zweiter Teil. Schlechtendalia 42: 1–266. https://doi.org/10.25673/117863
35. Tkach, N., Börner, E.Ö., Heklau, H. & Röser, M. 2024. Botanischer Wissenstransfer im 19. Jahrhundert: die Briefe von Eduard August von Regel (Zürich, St. Petersburg) an Diederich Franz Leonhard von Schlechtendal (Halle/Saale). Schlechtendalia 41: 87–117. http://dx.doi.org/10.25673/117673
34. Chepinoga, V.V., Barkalov, V.Yu., Ebel, A.L., Knyazev, M.S., Baikov, K.S., Bobrov, A.A., Chkalov, A.V., Doronkin, V.M., Efimov, P.G., Friesen, N.V., German, D.A., Gontcharov, A.A., Grabovskaya-Borodina, A.E., Gureyeva, I.I., Ivanenko, Yu.A., Kechaykin, A.A., Korobkov, A.A., Korolyuk, E.A., Kosachev, P.A., Kupriyanov, A.N., Luferov, A.N., Melnikov, D.G., Mikhailova, M.A., Nikiforova, O.D., Orlova., L.V., Ovchinnikova, S.V., Pinzhenina, E.A., Poliakova, T.A., Shekhovstsova, I.N., Shipunov, A.B., Shmakov, A.I., Smirnov, S.V., Tkach, N., Troshkina, V.I., Tupitsyna, N.N., Vasjukov, V.M., Vlasova, N.V., Verkhozina, A.V., Anenkhonov, O.A., Efremov, A.N., Glazunov, V.A., Khoreva, M.G., Kiseleva, T.I., Krestov, P.V., Kryukova, M.V., Kuzmin, I.V., Lashchinskiy, N.N., Pospelov, I.N., Pospelova, E.B., Zolotareva, N.V., Sennikov, A.N. 2024. Checklist of vascular plants of Asian Russia. Botanica Pacifica 13(Special Issue): 3–310. http://dx.doi.org/10.17581/bp.2024.13S01
33. Tkach, N., Rasti, S.L., Röser, M. 2024. Disentangling conflicting molecular phylogenetic signals in nuclear and plastid DNA of the western Eurasian-Mediterranean grass genus Cynosurus and its relatives (Poaceae subtribes Cynosurinae and Parapholiinae). Molecular Phylogenetics and Evolution 201: 108204. https://doi.org/10.1016/j.ympev.2024.108204 .
32. Röser, M. & Tkach, N. 2024. Delimitation and nomenclature of Agrostis, Polypogon and related grasses (Poaceae subfamily Pooideae). Schlechtendalia 41: 63–67. http://dx.doi.org/10.25673/117673
31. Carruthers, T., Moerland, M.S., Ebersbach, J., Favre, A., Folk, R.A, Hawkins, J.A., Muellner-Riehl, A.N., Röser, M., E. Soltis, D.E., Tkach, N., Baker, W.J., de Vos, J.M., Eiserhardt, W.L. 2024. Repeated upslope biome shifts in Saxifraga during late-Cenozoic climate cooling. Nature communications 15: 1100. https://doi.org/10.1038/s41467-024-45289-w
30. Tkach, N., Röser, M. 2024. The naming of plants from the Humboldt and Bonpland voyage to the Americas, a supposed new genus of Philippi from Chile and Müller’s botanical explorations in Australia in the light of Schlechtendal’s correspondence (herbarium HAL). Schlechtendalia 41: 26–42. http://dx.doi.org/10.25673/114541
29. Tkach, N., Röser, M. 2024. Taxonomy and correct species names in Pinus (Pinaceae): correspondence of the Basel jurist and naturalist Hermann Christ with the German botanist D.F.L. von Schlechtendal. Schlechtendalia 41: 17–25. https://doi.org/10.25673/114542
28. Tkach, N., Röser, M. 2023. The collection of letters addressed to D.F.L. von Schlechtendal in the university herbarium in Halle (Saale), Germany (HAL). Bauhinia 29: 53–62. https://doi.org/10.12685/bauhinia.1350
27. Rainer, H., Berger, A., Schuster, T.M., Walter, J., Reich, D., Zernig, K., Danihelka, J., Galušková, H., Mráz, P., Tkach, N., Hentschel, J., Müller, J., Wagner, S., Berendsohn, W., Lücking, R., Vogt, R., Pignotti, L., Roma- Marzio, F., Peruzz, L. 2023. Community Curation of Nomenclatural and Taxonomic Information in the context of the Collection Management System JACQ. Biodiversity Information Science and Standards 7: e112571. doi: 10.3897/biss.7.112571 [Biodiversity Information Standards (TDWG) 2023 Conference, Hobart, Tasmania, Australia, 9-13 Oct. 2023. Presented by H. Rainer.]
26. Peters, K., Blatt-Janmaat, K.L., Tkach, N., van Dam, N.M., Neumann, S. 2023. Untargeted metabolomics for integrative taxonomy: Metabolomics, DNA marker-based sequencing, and phenotype bioimaging. Plants 12(4): 881. https://www.mdpi.com/2223-7747/12/4/881
25. Tkach, N., Neubauer, N.A., Röser, M. 2022. Botanischer Wissenstransfer im 19. Jahrhundert: Briefe des Apothekers Otto Wilhelm Sonder an Diederich Franz Leonhard von Schlechtendal. [Botanical knowledge transfer in the 19th century: letters of the pharmacist Otto Wilhelm Sonder to Diederich Franz Leonhard von Schlechtendal.] Schlechtendalia 39: 119–179. http://dx.doi.org/10.25673/101037
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