Phytodiversity of Eastern Europe

4-26

Authors: Neshataeva V.Y., Neshataev V.Y., Yakubov V.V.

The plant community diversity, species composition and community structure of rare thermophilic plant communities and aggregations of Nizhne-Tchazhminsky hot springs (Kronotsky Nature Reserve, Eastern Kamchatka) were studied. A number of rare and endangered species of vascular plants were revealed in the area of the hot springs. The horizontal structure of the plant cover was studied. In accordance with the temperature and moisture of the substrate, several vegetation microzones were distinguished.

79-99

Authors: Bobrov Y.A., Lukasheva T.V., Kuznecova Y.V., Pozdeeva L.M.

In the article, herbarium collections of adventive monocotyledon plants of Institute of Biology of the Komi Science Centre of the Ural Division RAS (SYKO) and Pitirim Sorokin Syktyvkar State University (SYKT) are published. The authors showed that since the 30-ies of the 20th century 50 species (or 46 taking into account a wider interpretation of species Typha) of adventive plants from four families were found on the territory of the Republic of Komi. Seven species (Typha incana, T. laxmannii, Anisantha sterilis, Bromus danthoniae, Holcus lanatus, Hordeum leporinum) are picked up only once or twice at the same place (Alisma lanceolatum). Other 11 species (Typha elata, Aegilops cylindrica, Anisantha tectorum, Avena strigosa, Beckmannia syzigachne, Elymus sibiricus, Hordeum murinum, Lolium remotum, Phleum nodosum, Setaria italica, S. pumila, Sorghum halepense ) are gathered in different places of the Republic, but there are no repeated finds for location. The structure of finds is similar for the following 10 species (Typha intermedia, T. linnaei, Alopecurus myosuroides, Bromus japonicus, Hordeum distichon, H. vulgare, Lolium multiflorum, L. temulentum, Phalaris canariensis, Phleum phleoides ), but they have more massive collections. Finds of 13 species of cultivated plants and weeds (Agropyron cristatum, Avena fatua, A. sativa, Bromus arvensis, B. mollis, B. squarrosus, Echinochloa crusgalli, Hordeum brevisubulatum, H. jubatum, Lolium perenne, Panicum miliaceum, Secale cereale, Triticum aestivum) were relatively abundant until 90-ies of the 20th century then they stop. Properly massive and permanent collections are characteristic only for two plants – Elodea canadensis, Typha latifolia s. str. They successfully infiltrated natural or anthropogenicallytransformed reservoirs of the Republic and are currently expanding their areas. In addition, the collections of Alopecurus geniculatus , Poa compressa and Setaria viridis are relatively abundant and constant until the end of the 20th century. Absence of new finds of these species is difficult to explain.

104-123

Authors: Golovanov Y.M., Mustafina A.N., Karimova O.A., Zhigunov O.Y., Anishchenko I.E., Tukhvatullina L.A., Kryukova A.V., Andreeva I.E., Baisheva E.Z.

TO THE ANNIVERSARY OF LARISA MIKHAYLOVNA ABRAMOVA

133-136

Authors: Saksonov S.V.

ABOUT CONTEMPORARY CATALOGUES AND CADASTRES OF RUSSIAN HERBARIUMS (a review)