Area of Angled Clover (Trifolium angulatum) .

Object description Download GIS-layers


The experts - Dzyubenko N. I., E. A. Dzyubenko.
The GIS-Expert - Dzyubenko A. N.

Date of creation:



1:20 000 000.

Exactness of a map:

The map was created using maps that had the following scale 1:10 000 000.

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 polygon and points. Locations of species are represented by points, area of possible distribution of species are represented by polygon.

Exactness of classifier:

Light-colored points are locations referenced in literature sources. Dark-colored points are locations of the species that were as reported from created database BIN (the Komorov Institute of Botany).Polygons are based on literature sources, herbarium samples, political boundaries and ecological description.

Method of map construction:

For construction of the area of Trifolium angulatum the published map of area (Grossheim, 1952) and herbaria data (Komarov Botanical Institute (BIN), St.-Petersburg) were used. According to literary data the species has distributed only at the northern Caucasus (Flora of the USSR, 1945; Brezhnev, Korovina, 1980; Flora of the European part of the USSR, 1987). The presented area created by data generalization is the polygon (green line). The definition of area border is based on all available data which have no significant contradictions. It should be mentioned the lack of herbarium material connected with rare occurrence of the species which grows in the certain ecological conditions (salinized meadows) and small size of the area which nevertheless is considered to be original one (Bobrov, 1947).

Sources of the data:

Bobrov E. G. 1947. Clover species of the USSR. - In book: Flora and Systematics of Higher Plants, M.-L.: AN USSR, Vol.6 - p. 164 - 334. (in Russian).
Brezhnev D. D., Korovina O. N. 1980. Wild relatives of the cultivated plants of flora of the USSR. - L.: Kolos, 376 pp. (in Russian).
Flora of the European part of the USSR. 1987. Phyodorov A. A. (ed.). Vol. VI. - 254 pp. (in Russian).
Flora of the USSR, 1945. Schischkin V.K., E.G. Bobrov (ed.). Vol. 11, M.-L.: AN USSR , p. 129 - 176. (in Russian).
Grossheim A. A. 1952. Genus Trifolium. Flora of the Caucasus. M.-L.: AN USSR, Vol. 5 - p. 194 - 221. (in Russian).
Created database of the BIN materials (the Komorov Institute of Botany).

Rights and copyrights:

Copyright on the map and descriptions belong to its authors;
Copyright on the photos belong to Dzyubenko N. I.

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