Relatives

Range of distribution of Blue onion (Allium caesium Schrenk).

Object description Download GIS-layers

Authors:

The expert-botanist - I.G.Chukhina,
the GIS expert . T.A.Sinitsyna.

Date of creation:

28.03.2007

Scale:

1:20 000 000.

Accuracy of the map:

The map is based on data of 1:10 000 000 scale map.

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 cited in published sources. The dots also represent information from herbarium specimens. The polygon is based on generalized information from published sources and herbarium specimens.

Method of the map contruction:

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 data on the species distribution published by Vvedensky in "Flora of Tadzhik Soviet Socialist Republic" (1963) and Pavlov (1958).
The range borders are drawn according to herbarium materials referred to in the database of the Information Retrieval System, and specified according to published data of Vvedensky (1935, 1963) and Pavlov (1958).

References:

Herbarium specimens of V.L.Komarov Botanical institute [LE], St.Petersburg, Russia; N.I.Vavilov All-Russian Institute of Plant Industry [WIR], St.Petersburg, Russia.
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.
Ovczinnikov PN., ed. 1963. Flora of Tadzhik Soviet Socialist Republic. V.2. Moscow; Leningrad: Nauka. 456 p. (In Russian).
Pavlov NV., ed. 1961. Flora of Kazakhstan. V.2. Alma-Ata. 292 p. (In Russian).
Vvedensky AI. 1935. Onion . Allium L. In: Komarov VL., ed. Flora URSS. V.4. Moscow; Leningrad: AN SSSR. P.255. (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 N.V.Friesen.