Area of sword-shaped trigonella (Trigonella gladiata) .

Object description Download GIS-layers


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

Date of creation:




Exactness of map:

The map was created using maps that had the following scale 1:25.000.000-1:40.000.000.

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 polygons and points. Points represent locations of species, area of possible distribution of species are represented by polygons.

Accuracy of classifier:

Point data were obtained from literature sources and herbarium specimens. Light-colored points are locations referenced in literature sources. Dark-colored points are locations of the species that were reported from herbarium specimens. Polygons are based on literature sources, herbarium samples, political boundaries, ecological description 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 area of species distribution was determined according to the following sources: Herbarium collections of the V.L. Komorov Institute of Botany and N.I. Vavilov All Russian Institute of Plant Industry; (Grossheim, 1952). 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:

Grossheim, A.A. 1952. Genus Trigonella. Flora of the Caucasus. Moscow-Leningrad: AN USSR. V.5: 168-177. (In Russian)
V.L. Komorov Institute of Botany [LE], Saint Petersburg, Russia.
N.I. Vavilov All Russian Institute of Plant Industry [WIR], Saint Petersburg, Russia.

Rights and copyrights:

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

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