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Distribution area of sandy wild rye (Leymus arenarius) .

Object description Download GIS-layers

Authors:

Object-expert and GIS-expert L.L. Malyshev

Date of creation:

25.12.2003.

Scale:

1:20,000,000.

Accuracy of map:

Map was created using maps of scale 1:12,000,000-1:40,000,000.

Projection:

"Alber.s Equal Area Conic for the USSR", 9, 1001, 7, 100, 0, 44, 68, 0, 0.

Basic contents:

Vector map composed of one base and 2 thematic layers. The species distribution area is represented by a polygon and points.

Accuracy of classifier:

Point data were obtained from published sources and herbarium specimens. Polygons are based on published sources, herbarium samples, and field surveys by the authors.

Method of map production:

Published literature was reviewed, including atlases, monographs and papers. Occurrence data were obtained from herbarium specimens, floras, monographs and papers. The following maps were used as base maps: Tolmachev (1974), Shelyak-Sosonko (1977), and Hulten & Fries (1986). Also, specimens from the following herbariums were utilized: the N.I. Vavilov All-Russian Plant Institute and the V.L. Komarov Botanical Institute. Data were then compiled through scanning and geo-referencing to develop a composite vector map. The biologist, together with the GIS-specialist, drew a new plant distribution area based on compiled data.

Reference Citations:

Hulten E., Fries M. 1986. Atlas of Northern European Vascular Plants North of the Tropic of Cancer. Vol. 1-3. Konigstein, 1172 pp.
N.I. Vavilov All-Russian Institute of Plant Industry [WIR], St. Petersburg, Russia.
Shelyak-Sosonko, Y.P., ed. 1977. Grasses of Ukraine. Kiev: Naukova Dumka, 518 pp.
Tolmachev A.I., ed. 1974. Flora of the Northeast of the European part of the USSR. Vol. 1. Families Polypodiaceae-Gramineae. Leningrad: Nauka, 275 pp.
V.L. Komarov Botanical Institute [LE], St. Petersburg, Russia.

Rights and copyrights:

All rights to the map and its descriptions belong to its author.