Relatives

Range of distribution of Malus sylvestris Mill. (Crab apple, European wild apple)

Object description Download GIS-layers

Authors:

The expert-botanist - I.G.Chukhina,
the GIS expert - L.V.Bagmet.

Date of creation:

20.12.2006

Scale:

1:20 000 000.

Accuracy of the map:

The map is based on data of herbarium specimens and on 1:50 000 000 - 1:80 000 000 scale maps.

Projection:

"Albers Equal-Area Conic Projection for USSR", 9, 1001, 7, 100, 0, 44, 68, 0, 0

Basic contents:

The map is a vector file consisting of a polygon and dots. The localities of the species are represented by the dots; the area of possible species distribution is represented by the polygon.

Accuracy of the qualifier:

The dots represent information on the species localities according to published sources and herbarium specimens. The polygon is based on generalized information from published sources and herbarium specimens.

Method of the map construction:

The data on the species distribution were obtained from the database of the species localities coordinates included in the Information Retrieval System "Crop Wild Relatives in Russia" (STC Informregistr 0229905883, 1999), and from the maps published by Svjaseva in "Ranges of trees and shrubs of the USSR" (1980), Hulten (1986).
The range borders are mainly drawn according to Svjaseva (1980), the southeastern border according to herbarium materials referred to in the database of the Information Retrieval System.

References:

Herbarium specimens of V.L.Komarov Botanical Institute [LE] and N.I.Vavilov All-Russian Institute of Plant Industry [VIR], St.Petersburg, Russia, Voronezh State University, Voronezh, Russia.
Hulten E, Fries M. 1986. Atlas of North European vascular plants north of the Tropic of Cancer. V.1-3. Konigstein: Koeltz Scientific Books.
N.I.Vavilov All-Russian Institute of Plant Industry, Herbarium Department, 1999. Information Retrieval System: Crop Wild Relatives in Russia. STC Informregistr 0229905883, St.Petersburg, Russia.
Sokolov SI., Svjaseva OA., Kubli VA. 1980. Ranges of trees and shrubs of the USSR. V.2. Leningrad: Nauka. Map 53A. (In Russian).

Rights and copyrights:

The copyrights of the map and descriptions are held by their authors, the copyright of the photo is held by I.G.Chukhina.