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Distribution area of arctic brome (Bromopsis arctica (Shear.) Holub.).

Object description Download GIS-layers

Authors:

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

Date of creation:

17.06.2005.

Scale:

1:20,000,000.

Exactness of map:

The map was created using herbarium data.

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 points. Locations of species are represented by points.

Exactness of classifier:

Dark-colored points are locations of the species reported in the VIR database (N.I. Vavilov All-Russian Research Institute of Plant Industry) and BIN database (the Komorov Institute of Botany).

Method of map construction:

In order to construct the distribution area of Bromopsis arctica, the herbaria data from the N.I. Vavilov All Russian Institute of Plant Industry (VIR) in St. Petersburg and the Komarov Botanical Institute (BIN) were used. The species is closely related to Bromopsis ornans (Kom.) Holub. and replaces it in more northern latitudes, i.e. at Chukot peninsula. The species Bromopsis ornans (Kom.) Holub. is considered by some botanists to be a subspecies of Bromopsis pumpelliana (Scribn.) Holub.; the two cross freely with each other, forming transitional hybrid forms and rendering their identification rather difficult. The final species distribution area is represented by one polygon (green line) and separate points, which correspond to published data on species distribution (Tolmachev, 1964; Tzvelev, 1976). The distribution area borders take into account the ecological preferences of the species.

Sources of data:

Database of VIR materials (N.I. Vavilov All-Russian Institute of Plant Industry) and BIN materials (the Komorov Institute of Botany).
Tolmachev A.I., ed. 1964. Arctic flora of the USSR. Vol. 2. M.-L.: Nauka, 273 p. (in Russian).
Tzvelev N.N. 1976. Poaceae USSR. L.: Nauka, 788 pp. (in Russian).

Rights and copyrights:

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