Weeds

Area of distribution and weediness of Crescent Spurge (Euphorbia falcata L.)

Object description Download GIS-layers

Authors:

Specialist-biologist - O.E. Kravchenko,
GIS-specialist - I.A. Budrevskaya

Date of creation:

15.11.2004.

Scale:

1:20 000 000

Accuracy of map:

Map was created based on materials of map of natural scale 1:4 000 000-1:55 000 000 and on literature data.

Projection:

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

Basic Contents:

Vector map. Area of species distribution is shown by polygons, and sporadic distribution by points. Zones of weediness are shown by polygons.

Accuracy of classifier:

The weed area is subdivided into two zones, one representing species distribution, and the second where weed is considered a serious pest. Since no literature references specify this species as a malicious or important weed in the territory of the former USSR, we did not allocate an area of weediness for this species. Points represent locations where sporadic occurrence has been reported.

Method of map production:

Published literature was reviewed, including Atlases, monographs and papers. The species map from Grossgheim (1962) was used as a prototype. It was supplemented with data from the following sources: Nikitin (1983), Kharkevich (1991), Komarov & Il.in (1934), Shishkin & Bobrov (1949), N.I. Vavilov Institute Herbarium, Petrosyan et al. (2003). Adjustments were made according to the references listed below. In the first half of the 20th century the species was found in the Caucasus only according to the following sources: Keller et al. (1934), Komarov & Il.in (1934), Shishkin & Bobrov (1949). Now in the territory of the former USSR it is distributed in the southern and middle areas of the European part, in Crimea, the Caucasus, and mountain areas of Central Asia. It is an adventive plant in the Far East. The species is distributed in semi-desert, forest-steppe and steppe zones. It is not found in deserts. Insignificantly litters irrigable crops of wheat and cotton in southern areas of the European part (Visyulina et al., 1970); in the Caucasus (Grossgheim, 1949, 1962) and in the south of Central Asia (Nikitin, 1957). According to the following sources it has low significance as a weed: Nikitin (1957, 1983), Vasilchenko & Pidotti (1975), Vasilchenko (1979). Data were compiled through scanning and geo-referencing to develop a composite vector map. The biologist, together with the GIS specialist, drew a composite weed distribution area based on compiled data.

Reference citations:

Cherepanov S.K. 1995. Plantae Vasculares Rossicae et Civitatum Collimitanearum (in limics USSR olim)[List of Vascular Plants of Russia]. St. Petersburg: Mir I Semia. 990 pp. (In Russian)
Desa, M.I. 1989. Keys to weed plants of Kirghizia. Frunze: Kirgizstan. 204 pp. (In Russian)
Grossgheim, A.A. 1949. Keys to plants of the Caucasus. Moscow: Sovetskaya nauka. 747 pp. (In Russian)
Grossgheim, A.A. 1962. Flora of the Caucasus. Moscow-Leningrad: AN USSR. V. 6. 420 pp. (In Russian)
Keller B.A., Lyubimenko V.N., Maltsev A.I., Fedchenko B.A., Shishkin B.K., Rodzevich R.Yu., Kamenskii K.V., eds. 1934. Weed plants of the USSR. V. 3. Moscow-Leningrad: AS USSR. 448 pp. (In Russian)
Kharkevich S.S., ed. 1991. Vascular plants of the Soviet Far East. V. 5. Saint Petersburg: Nauka. 392 pp. (In Russian)
Komarov, V.L. & M.M. Il.in, eds. 1934. Flora of the USSR. V. 1. Leningrad: AN SSSR. 302 pp. (In Russian)
Kott S.A. 1955. Weed plants and their control. Moscow: Selkhosgiz. 2 ed. 384 pp. (In Russian)
N.I. Vavilov Institute of Plant Industry [WIR], St. Petersburg, Russia.
Nikitin V.V. 1957. Weed vegetation of Turkmenia. Ashkhabad: AN Turkmen SSR. 581 pp. (In Russian)
Nikitin V.V. 1983. Weed plants of the USSR flora. Leningrad: Nauka. 454 pp. (In Russian)
Peshkova, G.I., ed. 1996. Flora of Siberia. Novosibirsk: Nauka. V. 10. 254 pp. (In Russian)
Petrosyan V.G., Korneeva T.M., Nukhimovskaya Yu.D., Pavlov A.V., Bessonov S.A., 2003. Data base: .Information search system on flora and fauna in reservations of Russia.: http://www.sevin.ru/natreserves/content4.html (In Russian).
Rubtsov, N.I., ed. 1972. Keys to higher plants of the Crimea. Leningrad: Nauka. 552 pp. (In Russian)
Shishkin, B.K. & E.G. Bobrov, eds. 1949. Flora of the USSR. V. 14. Leningrad -Moscow: AN SSSR. 790 pp. (In Russian)
Takhtadzhyan, A.L. & A.A. Fedorov. 1972. Flora of Erevan. Leningrad: Nauka. 396 pp. (In Russian)
Ulyanova T.N. 1998. Weed plants in flora of Russia and other CIS countries. Saint Petersburg: VIR. 233 pp. (In Russian)
Vasilchenko, I.T. 1979. Keys to shoots of weed plants. Edition 2. Leningrad: Kolos. 344 pp. (In Russian)
Vasilchenko, I.T. & O.A. Pidotti. 1975. Keys to weed plants of areas of irrigated agriculture. Leningrad: Kolos. 375 pp. (In Russian)
Visyulina O.D., Kotov M.I., Dobrochaeva N.M., Kuznetsova G.O., Morozyuk S.S., eds. 1970. Weed plants of Ukraine. Kiev: Naukova dumka. 508 pp. (In Ukrainian)

Right and copyright:

All rights reserved. Copyright 2004 © O.E. Kravchenko & I.A. Budrevskaya (vector map, description). Picture was taken from Visyulina O.D. et al., 1970. Weed plants of Ukraine.