Relatives

The area of Kentucky bluegrass. - Poa pratensis L.

Object description Download GIS-layers

Authors:

The expert-botanist - Chuhina I.G., the GIS-Expert - Pereloma O.V.

Date of creation:

27.09.2005

Scale:

1:20 000 000.

Accuracy of a map:

Map is based on data from herbarium specimans and on maps having the following scale: 1:25 000 000 - 1:80 000 000

The projection:

"Alber's Equal Area Conic for Russia", 9, 1001, 7, 100, 0, 44, 68, 0, 0

Basic contents:

Map is a vector file consisting of polygons and points. Locations of species are represented by points, region of possible distribution of species are represented by polygons.

Accuracy of the qualifier:

Points represent locations of the species referenced in literature sources and from herbarium specimens. Polygons are based on generalized information from literature source and herbarium specimens.

Method of map contruction:

The data on distribution of the species were obtained from database of site coordinates of the species, in the Information Retrieval System "Wild-growing relatives of cultural plants of Russia" (NTC "Informregistr" № 0229905883) and published maps by Tolmachov (1964), Vasiljukhina (1969), Kachura for "Vascular plants of the Soviet Far East"(1985), Hulten (1986) and from list of locations published by P.N.Ovchinnikov for "Flora of the Tajik SSR" (1957).
In European part of Russia northern border of the area is constructed by A.I.Tolmachov, in Siberia - by M.A.Vasiljukhina, Hulten and corrected
in accordance with information from herbarium specimens. This information is kept in the database IRS, on the Chukotca - by Kachura. In the Middle Asia is drawn in accordance with map published by M.A.Vasiljukhina (1969) and is corrected in accordance with a herbarium data. Eastern border is constructed by Kachura and Hulten. In Far East southern border this area is drawn by N.N.Kachura, in Siberia - by Hulten, M.A.Vasiljukhina and corrected in accordance with information from herbarium specimens. In the Middle Asia is drawn by Hulten, In European part - by information from herbarium specimens. Western border of the area passed on national border of USSR.
We consider that points beyond the border of the polygon of Poa pratensis in the Middle Asia and in European part of Russia did not included in to basic area.

References:

Flora of the Tajik SSR. Pteridophytes - grasses, 1957. Ovchinnikov's P.N. (ed.), vol.1, Moscow/Leningrad: Publishing House of the USSR Academy of Sciences, p.156 (in Russian).
Herbarium N.I. Vavilov All Russian Institute of Plant Industry (WIR) (St.-Petersburg, Russia),Komarov Botanical Institute (LE) (Saint-Petersburg).
Information Retrieval System (IRS) "Wild relatives of cultural plants of Russia", 1999. N.I. Vavilov All Russian Institute of Plant Industry (WIR) (St.-Petersburg, Russia) NTC "Informregistr" № 0229905883.
Hulten, E. & Fries, M. 1986. Atlas of North European vascular plants: north of the Tropic of Cancer. I-III. - Koeltz Scientific Books, Konigstein.
Tolmachev, A.I. (ed.). Arctic flora USSR. 1964 numb. 2. Moscow-Leningrad: Nauka, map # 38. (in Russian).

Right and copyright:

Copyright on this map and description belongs to its authors.