Pests

Area of distribution and harmfulness of Tanymecus dilaticollis Gyll.

Object description Download GIS-layers

Authors:

Object specialist G.E. David'yan, GIS-specialist M.I. Saulich.

Date of creation:

2.02.2004.

Scale:

1:20 000 000.

Accuracy of map:

Created using maps with scale of 1:40 000 000, and on information taken from the literature and from an analysis of the collections of the Zoological Institute, Russian Academy of Sciences.

Projection:

.Alber.s Equal Conica for the USSR., 9, 1001, 7, 100, 0, 44, 68, 0, 0.

Basic contents:

Vector map, consisting of 2 thematic layers: area of species distribution and zone of pest damage as shown by polygons.

Accuracy of classifier:

Data from open publications were used to establish species distribution and zones of pest damage. A map of species distribution was based on an analysis of the biological collections at the Zoological Institute, Russian Academy of Science. Boundaries of the zone of harmfulness were determined according to the following publications: (Stoichev, 1973); (Shelud'ko, 1978); (Kopaneva, 1980). The zone of moderate harm comprises major area of Tanymecus dilaticollis Gyll. in the former USSR. Within the area of distribution, a moderate zone of pest damage has been established according to the extent that agricultural plants are damaged. Zone of moderate damage is defined as the spring occurrence of 5 adults per square meter on maize and sunflower crops, injuring 25-50% of sprouts.

Method of map production:

Scientists were given maps with boundaries of Oblasts and arable lands. After reviewing historic literature, species distribution was hand drawn on maps. If data were on the Oblast-level, distribution is on the Oblast level. In some cases, Oblast.s are further refined by boundaries of the Arable Land Map. Hand drawn maps were scanned, georeferenced and vectorized. The localities of the species were marked in coordinate system on a blank geographical map (Bobrinskii et al., 1969) using standard GIS-technologies.

Reference citations:

Bobrinskii N.A., Kuznetsov B.A., Kuzyakin A.P. 1965. Keys to Mammals of the USSR. Kuzyakin A.P., editor. Moscow: Prosveshchenie. 382 p. (In Russian)
Kopaneva L.M., ed. 1980. Key to harmful and useful insects and ticks on grain plants in the USSR. Leningrad: Kolos. 335 pp. (In Russian)
Koroljeva, I.E., Vilchevskaya, E.V., Ruhovich, D.I. 2003. Digital Arable Land Map. Laboratory of Soil Information of the Dokuchaev Soil Institute, Moscow.
Shelud'ko A.D. 1971. Maize leaf weevil (Tanymecus dilaticollis Gyll.) and substantiation control measures with him. In: Candidate thesis biol. sci. Kiev. 22 pp. (In Russian)
Stoichev O.A. 1973. Maize leaf weevil. Moscow: Kolos. 75 pp. (In Russian)

Right and copyright:

All rights reserved.
Copyright 2004 © G.E. David'yan & M.I. Saulich (vector map, description) and G.E. David'yan (picture).