Area of red clover (Trifolium pratense L.).

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 1:25 000 000-1:40 000 000.

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, area of possible distribution of species are represented by polygons.

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 VIR (N.I.Vavilov All-Russian Research Institute of Plant Industry). Polygons are based on literature sources, herbarium samples, political boundaries and ecological description.

Method of map construction:

Location and area of distribution The area of aof the species is based on a rezults of published maps and analysis of materials from the Vavilov Institute and the Komorov Institute of Botany. Literature used included: The basis of this area are: the map of Trifolium pratense distribution from Grossheim A. A. (1952); Hulten, Eric and Magnus Fries. (1986), and database of VIR. Points not included in polygon represent invasion by the species. Areal Final area also takes into account the ecology data from .Descriptions..
map was made taking into account ecology data from .Descriptions..

Sources of the data:

Grossheim A. A. 1952. Genus Trifolium. Flora of the Caucasus. M.-L.: AN USSR, v.5 - p. 194 - 221. (in Russian).
Hulten, Eric and Magnus Fries. 1986. Atlas of north European vascular plants north of the Tropic of Cancer.
Created database of the VIR materials (the N. I. Vavilov Allrussian Institute of Plant Industry).

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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