Alba-Tercedor, J. & Pujante, A. M. 2000. Running-water biomonitoring in Spain: opportunities for a predictive approach. In Assessing the Biological Quality of Fresh Waters: RIVPACS and Other Techniques (Wright, J. F., Sutcliffe, D. W. & Furse, M. T., eds), pp. 207–216. Fresh­water Biological Association, Ambleside, Cumbria, UK.

Armitage, P. D., Moss, D., Wright, J. F. & Furse, M. T. 1983. The performance of a new biological water quality score system based on a wide range of unpolluted running-water sites. Water Res., 17, 333–347.
doi:10.1016/0043-1354(83)90188-4

Arold, I. 2001. Eesti maastikuline liigestatus. Tartu Ülikooli Kirjastus, Tartu.

Arukaevu, K. (comp.) 1986. Eesti NSV jõgede, ojade ja kraavide nimestik. Valgus, Tallinn.

Barbour, M. T. & Yoder, C. O. 2000. The multimetric approach to bioassessment, as used in the United States of America. In Assessing the Biological Quality of Fresh Waters: RIVPACS and Other Techniques (Wright, J. F., Sutcliffe, D. W. & Furse, M. T., eds), pp. 281–292. Freshwater Biological Association, Ambleside, Cumbria, UK.

Buffagni, A., Erba, S., Birk, S., Cazzola, M., Feld, C., Ofenböck, T., Murray-Bligh, J., Furse, M. T., Clarke, R., Hering, D., Sozska, H. & van de Bund, W. 2005. Towards European inter-calibration for the Water Framework Directive: Procedures and examples for different river types from the E.C. project STAR. Quaderni, 123.

Clarke, R. 2000. Uncertainty in estimates of biological quality based on RIVPACS. In Assessing the Biological Quality of Fresh Waters: RIVPACS and Other Techniques (Wright, J. F., Sutcliffe, D. W. & Furse, M. T., eds), pp. 39–54. Freshwater Biological Association, Ambleside, Cumbria, UK.

Coimbra, C. N. & Graça, M. A. S. 1998. Water quality assessment based on macroinvertebrate community structure: a comparison between methods. Verh. Internat. Verein. theor. angew. Limnol., 26, 2362–2366.

Collier, K. J., Wilcock, R. J. & Meredith, A. S. 1998. Influence of substrate type and physico-chemical conditions on macroinvertebrate faunas and biotic indices of some Lowland Waikato, New Zealand, streams. New Zealand J. Mar. Freshwater Res., 32, 1–19.

Crunkilton, R. L. & Duchrow, R. L. 1991. Use of stream order and biological indices to assess water quality in the Osage and Black River basins of Missouri. Hydrobiologia, 244, 155–166.
doi:10.1007/BF00008465

Davies, P. E. 2000. Development of a national river bioassessment system (AUSRIVAS) in Australia. In Assessing the Biological Quality of Fresh Waters: RIVPACS and Other Techniques (Wright, J. F., Sutcliffe, D. W. & Furse, M. T., eds), pp. 113–124. Freshwater Biological Association, Ambleside, Cumbria, UK.

Dovciak, A. L. & Perry, J. A. 2002. In search of effective scales for stream management: Does agroecoregion, watershed, or their intersection best explain the variance in stream macro­invertebrate communities? Environ. Manage., 30, 365–377.
doi:10.1007/s00267-002-2529-6

European Committee for Standardization 1994. Water Quality – Methods for Biological Sampling – Guidance on Handnet Sampling of Aquatic Benthic Macro-invertebrates. EN 27828. European Committee for Standardization, Brussels, Belgium.

Feld, C. K. 2004. Identification and measure of hydromorphological degradation in Central European lowland streams. Hydrobiologia, 516, 69–90.
doi:10.1023/B:HYDR.0000025259.01054.f2

Feminella, J. W. 2000. Correspondence between stream macroinvertebrate assemblages and 4 eco­regions of the southeastern USA. J. North Am. Benthol. Soc., 19, 442–461.
doi:10.2307/1468106

Fölster, J., Sandin, L. & Wallin, M. 2004. A Suggestion to a Typology for Swedish Inland Surface Waters According to the EU Water Framework Directive. Report 2004:13. Department of Environmental Assessment, Swedish University of Agricultural Sciences; Uppsala, Sweden.

Fore, L. S., Karr, J. R. & Wisseman, R. W. 1996. Assessing invertebrate responses to human activities: Evaluating alternative approaches. J. North Am. Benthol. Soc., 15, 212–231.
doi:10.2307/1467949

Friberg, N. & Johnson, R. K. (eds) 1995. Biological Monitoring of Streams. Methods Used in the Nordic Countries Based on Macroinvertebrates. TemaNord, 640.

Furse, M. T. 2000. The application of RIVPACS procedure in headwater streams – an extensive and important national resource. In Assessing the Biological Quality of Fresh Waters: RIVPACS and Other Techniques (Wright, J. F., Sutcliffe, D. W. & Furse, M. T., eds), pp. 79–92. Fresh­water Biological Association, Ambleside, Cumbria, UK.

Furse, M., Hering, D., Moog, O., Verdonschot, P., Johnson, R. K., Brabec, K., Gritzalis, K., Buffagni, A., Pinto, P., Friberg, N., Murray-Bligh, J., Kokeš, J., Alber, R., Usseglio-Polatera, P., Haase, P., Sweeting, R., Bis, B., Szoszkiewicz, K., Soszka, H., Springe, G., Šporka, F. & Krno, I. 2006. The STAR project: context, objectives and approaches. Hydrobiologia, 566, 3–29.
doi:10.1007/s10750-006-0067-6

Gayraud, S., Statzner, B., Bady, P., Haybach, A., Schöll, F., Usseglio-Polatera, P. & Bacchi, M. 2003. Invertebrate traits for the biomonitoring of large European rivers: an initial assessment of alternative metrics. Freshwater Biol., 48, 2045–2064.
doi:10.1046/j.1365-2427.2003.01139.x

Goedkoop, W., Johnson, R. & Spånberg, E. 2000. The importance of sampling effort for the assessment of ecological quality using macroinvertebrates. Verh. Intern. Verein. theor. angew. Limnol., 27, 326–332.

Grubaugh, J. W., Wallace, J. B. & Houston, E. S. 1996. Longitudinal changes of macroinvertebrate communities along an Appalachian stream continuum. Can. J. Fish. Aquat. Sci., 53, 896–909.
doi:10.1139/cjfas-53-4-896

Hawkins, C. P., Norris, R. H., Gerritsen, J., Hughes, R. M., Jackson, S. K., Johnson, R. K. & Stevenson, R. J. 2000. Evaluation of the use of landscape classifications for the prediction of freshwater biota: synthesis and recommendations. J. North Am. Benthol. Soc., 19, 541–556.
doi:10.2307/1468113

Heino, J., Muotka, T., Paavola, R., Hämäläinen, H. & Koskenniemi, E. 2002. Correspondence between regional delineations and spatial patterns in macroinvertebrate assemblages of boreal headwater streams. J. North Am. Benthol. Soc., 21, 397–413.
doi:10.2307/1468478

Heino, J., Muotka, T. & Paavola, R. 2003. Determinants of macroinvertebrate diversity in headwater streams: regional and local influences. J. Animal Ecol., 72, 425–434.
doi:10.1046/j.1365-2656.2003.00711.x

Heino, J., Parviainen, J., Paavola, R., Jehle, M., Louhi, P. & Muotka, T. 2006. Characterizing macro­invertebrate assemblage structure in relation to stream size and tributary position. Hydrobiologia, 539, 121–130.
doi:10.1007/s10750-004-3914-3

Hering, D., Buffagni, A., Moog, O., Sandin, L., Sommerhäuser, M., Stubauer, I., Feld, C., Johnson, R., Pinto, P., Skoulikidis, N., Verdonschot, P. & Zahradkova, S. 2003. The development of a system to assess the ecological quality of streams based on macroinvertebrates – design of the sampling programme within the AQEM project. Int. Rev. Hydrobiol., 88, 345–361.
doi:10.1002/iroh.200390030

Hewlett, R. 2000. Implications of taxonomic resolution and sample habitat for stream classification at a broad geographic scale. J. North Am. Benthol. Soc., 19, 352–361.
doi:10.2307/1468077

Humphrey, C. L., Storey, A. W. & Thurtell, L. 2000. AUSRIVAS: operator sample processing errors and temporal variability – implications for model sensitivity. In Assessing the Biological Quality of Fresh Waters: RIVPACS and Other Techniques (Wright, J. F., Sutcliffe, D. W. & Furse, M. T., eds), pp. 143–164. Freshwater Biological Association, Ambleside, Cumbria, UK.

Illies, J. 1967. Limnofauna Europea. VEB Gustav Fisher Verlag, Jena.

Järvekülg, A. (ed.) 2001. Eesti jõed. Tartu Ülikooli Kirjastus, Tartu.

Johnson, R. K. 1999. Benthic macroinvertebrates. In Bedömningsgrunder för miljökvalitet. Sjöar och vattendrag. Bakgrundsrapport 2. Biologiska parametrar (Wiederholm, T., ed.), pp. 85–166. Naturvårdsverket Förlag.

Johnson, R. K. & Goedkoop, W. 2006. Revidering av bedömningsgrunder för bottenfauna i sjöar och vattendrag – Projekt 502 0510. Institutionen för miljöanalys, Uppsala.

Klemm, D. J., Blocksom, K. A., Thoeny, W. T., Fulk, F. A., Herlihy, A. T., Kaufmann, P. R. & Cormier, S. M. 2002. Methods development and use of macroinvertebrates as indicators of ecological conditions for streams in the Mid-Atlantic Highlands Region. Environ. Monit. Assess., 78, 169–212.
doi:10.1023/A:1016363718037

Lenat, D. R. 1988. Water quality assessment of streams using a qualitative collection method for benthic macroinvertebrates. J. North Am. Benthol. Soc., 7, 222–233.
doi:10.2307/1467422

Linke, S. & Norris, R. 2003. Biodiversity: bridging the gap between condition and conservation. Hydrobiologia, 500, 203–211.
doi:10.1023/A:1024614610232

Linke, S., Bailey, R. C. & Schwindt, J. 1999. Temporal variability of stream bioassessments using benthic macroinvertebrates. Freshwater Biol., 42, 575–584.
doi:10.1046/j.1365-2427.1999.00492.x

Lorenz, A., Kirchner, L. & Hering, D. 2004. “Electronic subsampling” of macrobenthic samples: how many individuals are needed for a valid assessment result? Hydrobiologia, 516, 299–312.
doi:10.1023/B:HYDR.0000025272.05793.00

Maxted, J. R., Barbour, M. T., Gerritsen, J., Poretti, V., Primrose, N., Silvia, A., Penrose, D. & Renfrow, R. 2000. Assessment framework for mid-Atlantic coastal plain streams using benthic macroinvertebrates. J. North Am. Benthol. Soc., 19, 128–144.
doi:10.2307/1468286

Maxted, J. R., Evans, B. F. & Scarsbrook, M. R. 2003. Development of standard protocols for macroinvertebrate assessment of soft-bottomed streams in New Zealand. New Zealand J. Mar. Freshwater Res., 37, 793–807.

Medin, M., Ericsson, U., Nilsson, C., Sundberg, I. & Nilsson, P.-A. 2001. Bedömningsgrunder för bottenfaunaundersökningar. Medins Sjö- och Åbiologi AB, Mölnlycke.

Meiner, A. (ed.) 1999. Land Cover of Estonia. Implementation of CORINE Land Cover Project in Estonia. EEIC, Tallinn.

Minshall, G. W., Petersen, R. C. & Nimz, C. F. 1985. Species richness in streams of different size from the same drainage basin. Am. Nat., 125, 16–38.
doi:10.1086/284326

Moog, O., Schmidt-Kloibe, A., Ofenböck, T. & Gerritsen, J. 2004. Does the ecoregion approach support the typological demands of the EU “Water Framework Directive”? Hydrobiologia, 516, 21–33.
doi:10.1023/B:HYDR.0000025256.73580.3e

Mykrä, H., Heino, J. & Muotka, T. 2004. Variability of lotic macroinvertebrate assemblages and stream habitat characteristics across hierarchical landscape classifications. Environ. Manage., 34, 341–352.
doi:10.1007/s00267-004-0236-1

Newall, P. & Wells, F. 2000. Potential for delineating indicator-defined regions for streams in Victoria, Australia. J. North Am. Benthol. Soc., 19, 557–571.
doi:10.2307/1468114

Olsen, H.-M. & Friberg, N. 1999. Biological stream assessment in Denmark: The importance of physical factors. In Biodiversity in Benthic Ecology. Proceedings from Nordic Benthological Meeting in Silkeborg, Denmark, 13–14 November 1997 (Sand-Jensen, K. & Pedersen, O., eds), pp. 89–95. NERI Technical Report No. 266, Silkeborg.

Paller, M. H., Specht, W. L. & Dyer, S. A. 2006. Effects of stream size on taxa richness and other commonly used benthic bioassessment metrics. Hydrobiologia, 568, 309–316.
doi:10.1007/s10750-006-0208-y

Parsons, M., Thoms, M. C. & Norris, R. H. 2003. Scales of macroinvertebrate distribution in relation to the hierarchical organization of river systems. J. North Am. Benthol. Soc., 22, 105–122.
doi:10.2307/1467981

Rabeni, C. F. 2000. Evaluating physical habitat integrity in relation to the biological potential of streams. Hydrobiologia, 422, 245–256.
doi:10.1023/A:1017022300825

Rabeni, C. F. & Doisy, K. E. 2000. Correspondence of stream benthic invertebrate assemblages to regional classification schemes in Missouri. J. North Am. Benthol. Soc., 19, 419–428.
doi:10.2307/1468104

Rader, R. B. & McArthur, J. V. 1995. The relative importance of refugia in determining the drift and habitat selection of predaceous stoneflies in a sandy-bottomed stream. Oecologia (Berlin), 103, 1–9.
doi:10.1007/BF00328418

Raukas, A. (ed.) 1995. Eesti loodus. Valgus/Eesti Entsüklopeediakirjastus, Tallinn.

Reece, P. F., Reynoldson, T. B., Richardson, J. S. & Rosenberg, D. M. 2001. Implications of seasonal variation for biomonitoring with predictive models in the Fraser River catchment, British Columbia. Can. J. Fish. Aquat. Sci., 58, 1411–1418.
doi:10.1139/cjfas-58-7-1411

Reyjol, Y., Compin, A., A-Ibarra, A. & Lim, P. 2003. Longitudinal diversity patterns in streams: comparing invertebrates and fish communities. Arch. Hydrobiol., 157, 525–533.
doi:10.1127/0003-9136/2003/0157-0525

Sandin, L. 2003. Benthic macroinvertebrates in Swedish streams: community structure, taxon richness, and environmental relations. Ecography, 26, 269–282.
doi:10.1034/j.1600-0587.2003.03380.x

SAS Institute Inc. 1996. SAS/STAT Software: Changes and Enhancements Through Release 6.11. Cary, NC.

Skriver, J., Friberg, N. & Kirkegaard, J. 2000. Biological assessment of watercourse quality in Denmark: introduction of the Danish Stream Fauna Index (DSFI) as the official bio­monitoring method. Verh. Intern. Verein. theor. angew. Limnol., 27, 1822–1830.

Smith, M. J., Kay, W. R., Edward, D. H. D., Papas, P. J., Richardson, K. St. J., Simpson, J. C., Pinder, A. M., Cale, D. J., Horwitz, P. H. J., Davis, J. A., Young, F. H., Norris, R. H. & Halse, S. A. 1999. AusRivAS: using macroinvertebrates to assess ecological condition of rivers in Western Australia. Freshwater Biol., 41, 269–282.
doi:10.1046/j.1365-2427.1999.00430.x

Solimini, A. G., Gulia, P., Monfrinotti, M. & Carchini, G. 2000. Effect of different sampling methods on the biotic indices values of the water quality in the lower part of the mediterranean River Tiber. Ann. Limnol. Int. J. Limnol., 36, 135–143.

Speth, S. & Boettger, K. 1994. The substrate-specific distribution of Ephemeroptera, Plecoptera and Trichoptera (Insecta) in a sandy stream of the North German Lowland (Osterau, Schleswig-Holstein). Limnologica, 23, 369–380.

Strubauer, I. & Moog, O. 2001. Taxonomic sufficiency versus need for information – comments based on Austrian experience in biological water quality monitoring. Verh. Intern. Verein. theor. angew. Limnol., 27, 2562–2566.

Timm, H. 2000. Distribution of stoneflies (Insecta: Plecoptera) in Estonia. Proc. Estonian Acad. Sci. Biol. Ecol., 49, 277–288.

Timm, H. 2003. Typology and classification of freshwaters in Estonia: preliminary results using shallow-water macroinvertebrates. In How to Assess and Monitor Ecological Quality in Fresh­waters (Ruoppa, M., Heinonen, P., Pilke, A., Rekolainen, S., Toivonen, H. & Vuoristo, H., eds), pp. 164–169. TemaNord, 547.

Timm, H., Ivask, M. & Möls, T. 2001. Response of macroinvertebrates and water quality to long-term decrease in organic pollution in some Estonian streams during 1990–1998. Hydro­biologia, 464, 153–164.
doi:10.1023/A:1013999403209

Turak, E., Flack, L. K., Norris, R. H., Simpson, J. & Waddell, N. 1999. Assessment of river condition at a large spatial scale using predictive models. Freshwater Biol., 41, 283–298.
doi:10.1046/j.1365-2427.1999.00431.x

Vannote, R. L., Minshall, G. W., Cummins, K. W., Sedell, J. R. & Cushing, C. E. 1980. The river continuum consept. Can. J. Fish. Aquat. Sci., 37, 130–137.

Waite, I. R., Herlihy, A. T., Larsen, D. P. & Klemm, D. J. 2000. Comparing strengths of geographic and nongeographic classifications of stream benthic macroinvertebrates in the Mid-Atlantic Highlands, USA. J. North Am. Benthol. Soc., 19, 429–441.
doi:10.2307/1468105

Waite, I. R., Herlihy, A. T., Larsen, D. P., Urquhart, N. S. & Klemm, D. J. 2004. The effects of macro­invertebrate taxonomic resolution in large landscape bioassessments: an example from the Mid-Atlantic Highlands, U.S.A. Freshwater Biol., 49, 474–489.
doi:10.1111/j.1365-2427.2004.01197.x

Water Framework Directive. 2002. The European Parliament and the Council of the European Union. Directive 2000/60/EC.

Weigel, B. M., Wang, L., Rasmussen, P. W., Butcher, J. T., Stewart, P. M., Simon, T. P. & Wiley, M. J. 2003. Relative influence of variables at multiple spatial scales on stream macroinvertebrates in the Northern Lakes and Forest ecoregion, U.S.A. Freshwater Biol., 48, 1440–1461.
doi:10.1046/j.1365-2427.2003.01076.x

Woodiwiss, F. S. 1964. The biological system of stream classifiation used by the Trent River Board. Chem. Ind., 11, 443–447.