Weeds
Area of distribution and weediness of Scleranthus annuus L.
Object description Download GIS-layers
Authors:
Object specialist - N.N.Luneva,GIS-specialist - I.A.Budrevskaya.
Date of creation:
6.12.2007.Scale:
1:20 000 000.Accuracy of the map:
It is created on materials of map of natural scale 1: 10 000 000 and on literature data.Projection:
"Alber's Equal Area Conic for the USSR", 9, 1001, 7, 100, 0, 44, 68, 0, 0.Basic content:
Vector map. Area of distribution is shown by polygons (main distribution) and by dots (sporadic distribution).Accuracy of the classifier:
Area is subdivided into zones of main and sporadic distribution.Method of map production:
The area of distribution is established according to the analysis of the open published maps and literature. A map compiled by Hulten E. & Fries M. (1986) is taken as a prototype. General distribution of this species is supported by data of Nikitina V.V. (1983). The German Knotgrass distribution in the European part of the USSR is confirmed by the literature data (Geideman, 1954; Tolmachev, 1962; Shishkin, 1965; Minyaev, 1981; Shlyakova, 1982; Tsvelev, 2000; Rodionova, 2001; Shmidt, 2005). The northeast border of distribution of the species is defined after the data of Tolmachev (1976). The species meets along the Russian Black Sea coast (Zernov, 2002), in Transcaucasia (Grossgeim, 1949) and Crimea (Rubtsov, 1972). The species has been brought to the Far East (Tolmachev, 1974; Tolmachev, 1966). The German Knotgrass litters cultural crops with abundance 2 points and lower; therefore, a zone of its weediness is inexpediently to allocate.Reference citations:
Geideman T.S. 1954. Keys to plants of Moldavian SSR. Moscow & Leningrad: Nauka, 466 p. (in Russian).Grossgeim A.A. 1949. Keys to plants of the Caucasus. Moscow: Sovetskaya nauka, 748 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 p.
Minyaev N.A., ed. 1981. Keys to higher plants of the Northwest of the European part of the RSFSR (the Leningrad, Pskov and Novgorod regions). Leningrad: Leningrad University. 376 p. (in Russian).
Nikitin V.V. 1983. Weeds in the flora of the USSR. Leningrad: Nauka. 454 p. (in Russian).
Rodionova A.E. 2001. Segetal plants of Upper Volga Basin Region. St. Petersburg: VIZR. 99p. (in Russian).
Rubtsov N.I., ed. 1972. Keys to higher plants of the Crimea. Leningrad: Nauka, 552 p. (in Russian).
Shishkin B.K., ed. 1965. Flora of the Leningrad Region. V. 4. Leningrad: LGU. 356 p. (in Russian).
Shlyakova E.V. 1982. Field-weed plants of the Non-Chernozem zone of RSFSR. In: Korovina O.N., ed. Catalogue of VIR world collection. N 338. Leningrad: VIR. 116 p. (in Russian).
Shmidt V.M. 2005. Flora of Arkhangelsk Region. St.Petersburg: St.Petersburg University, 346 p. (in Russian).
Tolmachev A.I., ed. 1962. Keys to vascular plants of Komi SSR. Moscow & Leningrad: AN SSSR, 360 p. (in Russian).
Tolmachev A.I., ed. 1966. Keys to plants of Primorskii Territory and Amur Region. Moscow & Leningrad: Nauka, 492 p. (in Russian).
Tolmachev A.I., ed. 1974. Keys to higher plants of Sakhalin and Kurile islands. Leningrad: Nauka. 372 p. (in Russian).
Tolmachev A.I., ed. 1976. Flora of Northeast of the European part of the USSR. V. 2. Leningrad: Nauka, 316 p. (in Russian).
Tsvelev N.N. 2000. Keys to the vascular plants of North-West Russia (Leningrad, Pskov and Novgorod Regions). Saint-Petersburg: SPbSCPA press. 781 p. (in Russian).
Zernov A.S. 2002. Keys to vascular plants of the north of Russian Black Sea coast. Moscow: KMK, 284 p. (in Russian).