Relatives

The range distribution of spiral onion (Allium spirale Willd. ex Schlecht.).

Object description Download GIS-layers

Authors:

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

Date of creation:

20.03.2007

Scale:

1:20 000 000.

Accuracy of the map:

The map is based on data of a 1:16 700 000 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 polygon and dots. The localities of the species are represented by dots; the area of possible distribution is represented by a polygon.

Accuracy of the qualifier:

The dots represent information on the species localities mentioned in published sources. Also, the dots 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 site coordinates of the species in the Information Retrieval System: Crop Wild Relatives in Russia (STC Informregistr 0229905883, St. Petersburg, Russia), and from published map by N.N.Kachura for "Vascular plants of the Soviet Far East" (1987).
The range borders are mainly drawn according to N.N.Kachura (1987) and corrected according to herbarium materials referred to in the IRS database. In our opinion, the unique westernmost locality of the species in the Amur Region, isolated from its main range, should not be included in the polygon since this record needs additional study.

References:

Herbarium specimens from N.I.Vavilov All-Russian Institute of Plant Industry [WIR], V.L.Komarov Botanical institute [LE], St.Petersburg, Russia; M.V.Lomonosov Moscow State University [MW], Moscow, Russia.
Kharkevich SS., ed. 1987. Vascular plants of the Soviet Far East. Leningrad: Nauka. V.2. Map 126. (In Russian).
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.

Rights and copyrights:

The copyrights of the map and descriptions are held by their authors. The copyright of the photo is held by T.A. Sinitsyna.