References
- Sarbu, A., Janauer, G., Exler, N., Filzmoser, P. (2006). The aquatic vegetation of large Danube river branches in Romania. In Proceedings of the 36th International Conference of IAD, Austrian Committee DanubeResearch (pp. 101-106). Vienna.
- Schneider, S., Melzer, A. (2003). The trophic index of macrophytes (TIM)—a new tool for indicating the trophic state of running waters. Int. Rev. Hydrobiol., 88, 49-67.
- Scott, W. A., Adamson, J. K., Rollinson, J., Parr, T. W. (2002). Monitoring of aquatic macrophytes for detection of long-term change in river systems. Environ. Monitor. Assess., 73, 131-153.
- Abou-Hamdan, H., Haury, J., Hebrard, J. P., Dandelot, S., Cazaubon, A. (2005). Macrophytic communities inhabiting the Huveaune (South-East France), a river subject to natural and anthropic disturbances. Hydrobiologia, 551, 161-170.
- Burnett, D. A., Champion, P. D., Clayton, J. S., Ogden J. (2007). A system for investigation of the temperature responses of emergent aquatic plants. Aquatic Botany, 86(2), 187-190.
- Chambers, P. A., Prepas, E. E., Hamilton, H. R., Bothwell, M. L. (1991). Current velocity and its effect on aquatic macrophytes in flowing waters. Ecol. Applic., 1(3), 249-257.
- Chambers, P. A., DeWreede, R. E., Irlandi, E. A., Vandermeulen, H. (1999). Management issues in aquatic macrophyte ecology: A Canadian perspective. Can. J. Bot. 77, 471-487.
- Cimdiņš, P., Druvietis, I., Liepa, R., Parele, E., Urtāne, L., Urtāns, A. (1995). A Latvian catalogue of indicator species of freshwater saprobity. Proc. Latvian Acad. Sci., Section B, No. 1/2, 122-133.
- Clarke, S. J., Wharton G. (2001). Sediment nutrient characteristics and aquatic macrophytes in lowland English rivers. Sci. Total Environ., 266, 103-112.
- Druvietis, I., Briede, A., Grinberga, L., Parele, E., Rodinovs, V., Springe, G. (2007). Long-term assessment of hydroecosystem of the River Salaca, North Vidzeme Biosphere Reserve, Latvia. In Climate Change in Latvia. (pp. 173-192). Riga: University of Latvia.
- Ellenberg, H., Weber, H. E., Düll, R. (1992). Zeigenwerte von Pflanzen in Mitteleuropa. Scripta Geobotanica, 18, 1-258.
- Georg, A., Janauer, Lanz, E., Filzmoser, P., Exler, N. (2006). Breg and Brigach, source streams of the Danube: Changes based on macrophyte surveys 1967, 1989, and 2004. Proceedings of the 36th International Conference of International Association for Danube Research, 7-8 September 2006. (pp. 86-90). Austrian Committee DanubeResearch. Vienna.
- Hearne, J. W., Armitage, P. D. (1993). Implications of the annual macrophyte growth cycle on habitat in rivers. Regul. Rivers. Res. Man., 8, 313-322.
- Jansons, V., Vagstad, N., Sudars, R., Deelstra, J., Dzalbe, I., Kirsteina, D. (2002). Nutrient losses from point and diffuse agricultural sources in Latvia. Landbauforschnung Volkenrode, 1(52), 9-17.
- Kankaala, P., Ojala, A., Tulonen, T., Haapamaki, J., Arvola, L. (2000). Response of littoral vegetation on climate warming in the boreal zone: An experimental simulation. Aquatic Ecol., 34, 433-444.
- Lacoul, P., Freedman, B. (2006). Environmental influences on aquatic plants in freshwater ecosystems. Environ. Rev./Dossiers Environ. 14(2), 89-136.
- Madsen, T. V., Brix, H. (1997). Growth, photosynthesis and acclimation by two submerged macrophytes in relation to temperature. Oecologia. 110, 320-327.
- McKee, J., Richards, A. J. (1996). Variation in seed production and germinability in common reed (Phragmites australis) in Britain and France with respect to climate. New Phytol. 133, 233-243.
- Melzer, A. (1999). Aquatic macrophytes as tools for lake management. Hydrobiologia, 395/396, 181-190.
- Middlekoop, H. (2000). The impact of climate change on the River Rhine and the implications for water management in the Netherlands. Lelystad: Lelystad: RIZA (Institute for Inland Water Management and Waste Water Treatment). 156 pp.
- Sand-Jensen, K. (1998). Influence of submerged macrophytes on sediment composition and near bed flow in lowland streams. Freshwater Biol., 39(4), 663-679.
- Sand-Jensen, K., Pedersen, O. (1999). Velocity gradients and turbulence around macrophyte stands in streems. Freshwater Biol., 42(2), 315-328.
- Vereecken, H., Baetens, J., Viaene, P., Mostaert, F., Meire, P. (2006). Ecological management of aquatic plants: Effects in lowland streams. Hydrobiologia, 570, 205-210.
- Аноним (1975). Мемо∂uка uзученuя бuогеоценозов внумреннuх во∂оемв [Methods of investigation on inland waters] Москва: Наука, с. 17-132.
- Уртанс, А. В. (1989). Структура и распределение высшей водной растителности в р. Салаца [Structure and distribution of aquatic plants in the River Salaca]. В книге: Бuоценоmuческая cmpykmypa малых рек. Бассеuн рекu Салаца. Рига, Зинатне, с. 163-182 (in Russian).