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Distribution area of Italian ryegrass (Lolium multiflorum Lam.).

Object description Download GIS-layers

Authors:

Experts N.I. Dzyubenko & E.A. Dzyubenko
GIS-Expert A.N. Dzyubenko

Date of creation:

17.09.2004

Scale:

1:20,000,000.

Accuracy of map:

Map was created using maps of scale 1:5,000,000-1:50,000,000.

The projection:

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

Basic contents:

Vector map. Area of species distribution is shown by polygons, while actual location occurrence is shown by points.

Accuracy of classifier:

Point data were obtained from published sources and herbarium specimens. Light-colored points represent species locations referenced in published sources. Dark-colored points represent locations from which VIR (N.I. Vavilov All-Russian Research Institute of Plant Industry) and BIN (V.L. Komorov Institute of Botany) herbarium samples were taken. 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 (N.I. Vavilov Institute, V.L. Komarov Institute), floras, monographs and papers. The following sources were used to determine the species distribution area: Shelyak-Sosonko (1977), Grossgheim (1939), Hulten & Fries (1986), Harkhevich (1985) and the databases of the N.I. Vavilov Institute and the V.L. Komarov 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:

Grossgheim, A.A. 1939. Flora of the Caucasus. Vol. 2. Baku: AzFAN, 587 pp. (In Russian)
Harkhevich S.S., ed. 1985. Vascular Plants of Soviet Far East. Vol. 1. St. Petersburg: Nauka, 390 pp. (In Russian)
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.
V.L. Komarov Institute of Botany [LE], St. Petersburg, Russia.

Rights and copyrights:

Copyright on the map and its descriptions belong to its authors.