[Anonīms (1994). Nolikums par Latvijas Republikas lauksaimniecībā izmantojamās zemes pārraudzību [Regulation of the State Agricultural Monitoring Programme of the Latvian Republic] (sagatavojuši A. Vucāns, I. Gemste). Apstiprinājis LR Zemes dienesta generāldirektors G. Grūbe 1994. g. 14. februārī (in Latvian).]Search in Google Scholar
[Burrows, L.A., Edward, C.A. (2004). The use of integrated soil microcosms to assess the impact of carbendazim on soil ecosystems. Ecotoxicology, 13, 143-161.10.1023/B:ECTX.0000012411.14680.21]Search in Google Scholar
[Doerr, A.B. (1962). De Martonne's Index of Aridity and Oklahoma's almate. University of Oklahoma. Proc. Ocla. Acad. Sci., 311-313.]Search in Google Scholar
[Edwards, C., Lofty, J. (1975). The influence of cultivations on soil animal populations. In: Progress in Soil Zoology. Proceedings of the 5th International Coloquium on Soil Zoology. Prague, 1973 (pp. 399-407). Vanek, J. (ed.). Prague.]Search in Google Scholar
[Ivask, M., Kuu, A. (2006). Earthworm communities in Estonian arable soils. Poster. The 8th International Symposium on Earthworm Ecology. Krakow, Poland, 4th-9th September (p. 37). Krakow.]Search in Google Scholar
[Ivask, M., Kuu, A., Sizov, E. (2007). Abundance of earthworm species in Estonian arable soils. Eur. J. Soil Biol., 43, 39-42.10.1016/j.ejsobi.2007.08.006]Search in Google Scholar
[Ivask, M., Kuu, A., Truu, M., Truu, J. (2006). The effect of soil type and soil moisture on earthworm communities. Agraarteadus, 17(1), 3-33.]Search in Google Scholar
[Karklins, A., Vucans, A., Gemste, I. (1998). The three level agricultural land monitoring in Latvia. In: 16th World Congress of Soil Science. August 20-26, 1998, Montpellier, France. Summaries of Symposiums. Vol. 1, p. 226.]Search in Google Scholar
[Kladivko-Eileen, J. (2001). Tillage systems and soil ecology. Soil and Tillage Research, 61 (1-2), 61-76.10.1016/S0167-1987(01)00179-9]Search in Google Scholar
[Lee, K.E. (1985). Earthworms. Their Ecology and Relationships with Soil and Land Use. Sydney, Orland, London: Academic Press, 411 pp.]Search in Google Scholar
[Lewis, T. (1980). Faunal change and potential pests associated with direct drilling. EPPO Bull., 10(2); 187-193.10.1111/j.1365-2338.1980.tb02642.x]Search in Google Scholar
[Lofs-Holmin, A. (1983). Earthworm population dynamics in different agricultural rotations. In: Earthworms Ecology. Satchell, J.E. (ed.). London: Chapman and Hall, pp. 151-160.10.1007/978-94-009-5965-1_12]Search in Google Scholar
[Paoletti, M. (1999). The role of earthworms for assessment of sustainability and as bioindicators. Agriculture, Ecosystems and Environment, 74, 137-155.10.1016/S0167-8809(99)00034-1]Search in Google Scholar
[Pižl, V. (1992). Succession of earthworm populations in abandoned fields. Soil Biol. Biochem., 24(12), 1623-1628.10.1016/0038-0717(92)90160-Y]Search in Google Scholar
[Stewart, V., Salih R., Al-Bakri, K., Strong, J. (1980). Earthworms and soil structure. Welsh Soils Discussion Group Report, 21, 103-114.]Search in Google Scholar
[Topoliantz, S., Ponge, J.-F., Viaux, P. (2000). Earthworm and enchytraeid activity under different arable farming systems, as exemplified by biogenic structures. Plant and Soil, 225, 39-51.10.1023/A:1026537632468]Search in Google Scholar
[Ventiņš, J., Vucāns, A., Gemste, I., Līvmanis, J., Ivbulis, P. (2000). Slieku izplatība lauksaimniecībā izmantojamo platību augsnēs [Distribution of earthworm populations in agricultural soils]. LLU Raksti, 6, 22-29 (in Latvian).]Search in Google Scholar
[Ventiņš, J. (2009). Sliekas un augsne [Earthworms and soil]. Grām.: Notekūdeņu dūņas un augsne (205.-263. lpp.). Brēdiķe, L. (red.). Jelgava, LLU agentūra Ūdenssaimniecības un zemes zinātniskais institūts (in Latvian).]Search in Google Scholar
[Werner, M.R. (1990). Earthworm ecology and sustaining agriculture: http://www.sarep.ucdavis.edu/worms/werner.htm]Search in Google Scholar
[Атлавините О. (1976). Lumbricidae. В кн.: Фауна почвенных беспозво- ночных морского побережя Прибалтики [Fauna of soil invertebrates on the Baltic Sea Coast]. Вильнюс: Мокслас, с. 49-52 (in Russian).]Search in Google Scholar
[Атлавините, О.(1990). Влияние дождевых червей на агроценозы [The Effect of Earthworms on Agrocenoses]. Вильнюс: Мокслас, 179 с. (in Russian).]Search in Google Scholar
[Эглитис В. (1954). Фауна почв Латвийской ССР [Soil Fauna of Latvian SSR]. Рига: АН ЛССР. 261 с. (in Russian).]Search in Google Scholar
[Перель Т.С. (1979).Распространение и закономерности распределе-ние дождевых червей в фауне СССР [Range and Regularities in the Distribution of Earthworms of the USSR Fauna]. Москва: Наука. 272 с. (in Russian).]Search in Google Scholar