Area of distribution and weediness of Crepis tectorum L.

Object description Download GIS-layers


Specialist-biologist I.N. Nadtochii,
GIS-specialist I.A. Budrevskaya.

Date of creation:



1:20 000 000.

Accuracy of map:

Map was created based on information taken from published literature and maps of scale 1:10 000 000-1:80 000 000.


"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. Points represent locations where sporadic occurrence has been reported.

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 map of Hulten & Fries (1986) was used as a base map. The following sources were used to make adjustments to various borders of the base map: In the Murmansk region (Volkov, 1935) the border is advanced northward; In the Northeast part it is expanded (Tolmachev, 1977); The southern border according to the Arable Lands Map (Koroljeva et al., 2003); In the Far East (Harkevich 1992; Dymina 1971; Ul.yanova 1980) the zone is also adjusted according to the Arable Lands Map. Points of sporadic distribution were determined according to the following sources: Tolmachev (1977), Harkevich (1992), VIR Herbarium (N.I. Vavilov), Hulten & Fries (1986). The zone of weediness was determined according to the following sources: Zhuravlev (1949), Zuza (1988), Kazakevich (1951), Kozlovskaya & Simonovich (1966), Kuminova (1958), Nikitin (1983), Polozhii (1957), Sklyadnev et al. (1960), Tihonova (1937), Yanchurina (1976). Data were then 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:

Dymina T.D. 1971. Excursion on studying weed plants of the Amur Region. In: Transactions of the Blagoveshchensk State Pedagogical Institute. Blagoveshchensk: BGPI. 46-57 p. (In Russian)
Hulten E., Fries M. 1986. Atlas of North European Vascular Plants, North of the Tropic of cancer. Konigstein. V. 1-3: 1172.
Kazakevich L.I. 1951. Weed plants and their control. Saratov: Regional State Publishing House. 52 p. (In Russian)
Kharkevich S.S., ed. 1992. Vascular plants of the Soviet Far East. St. Petersburg: Nauka. V. 6: 250. (In Russian)
Koroljeva IE, Vilchevskaya EV, Ruhovich DI. 2003. Digital Arable Land Map. Laboratory of Soil Information of the Dokuchaev Soil Institute, Moscow, Russia [Based on: Yanvareva LF. (ed.), Martynjuk KN., Kisileva NM. 1989. Map of Land Use, Faculty of Geography, Moscow State University, Moscow, Russia.].
Korovina O.N., ed. 1983. Weed plants of the Soviet Far East (the list and distribution). In: Catalogue of VIR World Collection 374. Leningrad: VIR. 46 p. (In Russian)
Kozlovskaya N.V., Simonovich L.G. 1966. Features of weed distribution on turfy-podzol soils of Polesye region. In: Geobotanical research. Minsk: Nauka i tekhnika. 56-64 p. (In Russian)
Kuminova A.V. 1958. Weed and poisonous plants. Kemerovo: Kuzbass. 61 p. (In Russian)
N.I. Vavilov All-Russian Institute of Plant Industry [WIR], St. Petersburg, Russia.
Nikitin V.V. 1983. Weed plants in the flora of the USSR. Leningrad: Nauka. 454 p. (In Russian)
Polozhii A.V. 1957. Weeds control on field crops of Tomsk Region. In: Problems of pests, diseases and weeds control on agricultural crops in Tomsk Region. Tomsk: Tomsk University. 37-44 p. (In Russian)
Simonov I. 1969. Weeds and their control. Sverdlovsk: Sredne-Ural`skoe Publishing House. 132 p. (In Russian)
Sklyadnev N., Egoryev V., Belyova V. 1960. Research of weed vegetation in forest-steppe regions of Krasnoyarsk Territory: holding Minderlinskoye as a case. In: Proceedings of Krasnoyarsk Agricultural Institute. Krasnoyarsk. V. 7: 96-105. (In Russian)
Tikhonova Z.E. 1937. Weeds and their control. Gor`kii: Gor`kii Regional Publishing House. 90 p. (In Russian)
Tolmachev, A.I., ed. 1977. Flora of North-East of the European part of the USSR. Leningrad: Nauka. V. 4: 312. (In Russian)
Ul.yanova T.N. 1980. Weed plants of Magadan Region. In: Proceedings on applied botany, genetics and selection. Leningrad: VIR. V. 68(3): 34-41. (In Russian)
Volkov A.N., ed. 1935. Areas of distribution of the major weed plants in the USSR. Moscow & Leningrad: State Publishing House of Kolkhoz and Sovkhoz Literature. 152 p. (In Russian)
Yanchurina A.L. 1976. Floristic structure and distribution of weed plants in Kuibyshev Region. Leningrad-Pushkin: LSKHI. 24 p. (In Russian)
Zhuravlev M.Z. 1949. Contamination by weeds of seeds of durum and soft wheat on common chernozems of Omsk Region. In: Proceedings of S.M. Kirov Omsk Agricultural Institute. Omsk: Omsk State Publishing House. 107-115 p. (In Russian)
Zuza V.S. 1988. Weeds on agricultural crops in Kharkov Region. Ukrains.kii botanichnii zhurnal, 45(2): 40-43. (In Ukrainian).

Right and copyright:

All rights reserved. Copyright 2004 © I.N. Nadtochii & I.A. Budrevskaya (vector map, description).

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