Relatives

Distribution area of Elaeagnus caspica (Sosn.) Grossh.

Object description Download GIS-layers

Authors:

The expert-botanist I.G. Chuhina
The GIS-Expert E.I. Suzanskaja

Date of creation:

14.11.2003

Scale:

1:20,000,000.

Exactness of map:

Map was created using data from herbarium specimens and maps of scale 1:13,000,000.

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 polygons and points. Points represent actual locations of species; areas of possible distribution of species are represented by polygons.

Accuracy of classifier:

Points represent locations of the species referenced in published sources and locations from which herbarium specimens were taken. Polygons are based on generalized information from published sources and herbarium specimens.

Method of map production:

Published literature was reviewed, including atlases, monographs and papers. Occurrence data were obtained from herbarium specimens, floras, monographs and papers. Distribution points were determined using a database of site coordinates developed by the N.I. Vavilov Institute (1992) and other sources (Grossgeim, 1962; Kozlovskaya, 1969). 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:

Grossgeim, A.A. 1962. Flora of the Caucasus. Vol. 6. Moscow/Leningrad: Publishing House of the USSR Academy of Sciences. 224 p. (In Russian)
Kozlovskaya N.V. 1969. Distribution of Eleagnus L. species in the Soviet Union. Plants areas of the USSR flora. Leningrad: Leningrad University Publishers. Issue 2. 230 p. (In Russian)
N.I. Vavilov Institute, Herbarium Department, 1992. Information retrieval system: wild-growing relatives of cultural plants of Russia. STC Informregistr 0229905883, St. Petersburg, Russia.
V.L. Komarov Botanical Institute of the Russian Academy of Science [LE], St. Petersburg, Russia.

Rights and copyrights:

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