Weeds
Area of distribution and weediness of Juncus bufonius L.
Object description Download GIS-layers
Authors:
Specialist-biologist T.D. Sokolova,GIS-specialist I.A.Budrevskaya.
Date of creation:
24.03.2006.Scale:
1:20 000 000.Accuracy of the map:
It is created on materials of maps of natural scale 1:5 000 000 - 1:80 000 000 and on literature data.Projection:
"Alber's Equal Area Conic" USSR, 9, 1001, 7, 100, 0, 44, 68, 0, 0.Basic contents:
Vector map. Area is shown by polygons (main distribution) and by dots (sporadic distribution). Zone of weediness is shown by polygons.Accuracy of the classifier:
Within the weed area, the zones of main and sporadic distribution and the zone of weediness are shown where J. bufonius is a pernicious weed. The zone of weediness is established by criteria of occurrence of this species and abundance (Tanskii et al., 1998). In the limits of this zone, J. bufonius is characterized by 25% frequency of occurrence and 2 points of abundance.Method of map production:
Areas of main distribution, sporadic distribution and weediness are established according to the analysis of the published maps and literature. The area of J. bufonius is based on the map taken from Hulten E. & Fries M. (1986). This area is enlarged in the Caucasus according to Grossgeim A.A. (1940) and in the Northeast of the European part of the former USSR according to Tolmachev A.I. (1976). Limits of the zone of weediness are established according to Nikitin V.V. (1983) and Ulyanova T.N. (1981, 1983), specified in accordance with the data on abundance and frequency of the species occurrence, which is taken from the following references and adjusted to the limits of arable lands. According to Ulyanova T.N. (1981), J. bufonius is a pernicious weed of wheat in the European part of the former USSR (except the Non-Chernozem region of Russia). According to the same author (1983), J. bufonius is one of the main weeds of rice in the Far East. Nikitin V.V. (1983) points out that J. bufonius infests not heavily rice in the South of the former USSR. Sporadic distribution is shown according to Hulten E. & Fries M. (1986), Dorogostaiskaya E.V., Grossgeim A.A. (1940), Tolmachev A.I. (1976), Kharkevich S.S. (1985).Reference citations:
Dorogostaiskaya, E.V. 1972. Weed plants of the Far North of the USSR. Leningrad: Nauka, 172 p. (in Russian).Grossgeim, A.A. 1940. Flora of the Caucasus. V.2. Baku: AzFan, 284 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.
Keller, B.A., Ljubimenko, V.N., Mal'tsev, A.I., etc. 1934. Weed plants of the USSR. V.1. Leningrad: AN SSSR, 324 p. (in Russian).
Kharkevich, S.S., ed. 1985. Vascular plants of the Soviet Far East. V.1. Leningrad: Nauka, 400 p. (in Russian).
Nikitin, V.V. 1983. Weed plants in the flora of the USSR. Leningrad: Nauka, 454 p. (in Russian).
Tanskii, V.I., Levitin, M.M., Ishkova, T.I. & Kondratenko, V.I. 1998. Phytosanitary diagnostics in integrated managemant of cereals. In: Novozhilov, K.V., ed. Compendium of methodical recommendations in plant protection. St.-Petersburg: VIZR, p. 5-55. (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).
Ulyanova, T.N. 1981. Weed plants in wheat of the USSR. In: Korovina, O.N., ed. Catalogue of VIR world collection. Issue 320. Leningrad: VIR, 68 p. (in Russian).
Ulyanova, T.N. 1983. Weed plants of the Soviet Far East. In: Korovina, O.N., ed. Catalogue of VIR world collection. Issue 374. Leningrad: VIR, 48 p. (in Russian).
Ulyanova, T.N. 1998. Weed plants in the flora of Russia and other CIS states. St.-Petersburg: VIR, 344 p. (in Russian).
Vasilchenko, I.T., ed. 1953. Weed plants of Tajikistan. V.1. Moscow-Leningrad: AN SSSR, 451 p. (in Russian).