European Large Lakes – Ecosystem changes and their ecological and socioeconomic impacts doc

[...]... Viljanen European Large Lakes – Ecosystem changes and their ecological and socioeconomic impacts higher ratio of dissolved inorganic compounds N to P and higher phytoplankton and cyanobacterial biomasses Comparison between parts of the lake demonstrated that the differences between the two periods were more evident in the shallower and strongly eutrophic parts, Lake Pihkva and Lake Lammijarv, than in the largest... helophytes and wetland plants (five taxa) are characteristic of the assemblage Table 1 gives a detailed overview of the distribution and grouping of the plant macrofossils identified Diatom assemblages About 67 diatom taxa were identified from the sediment sequence analysed Genera with the greatest Groups Taxa Remains Depth (cm) Sum 81 7–8 19 82 2–8 24 82 6–8 29 82 9–8 31 83 3–8 35 84 8–8 51 85 1–8 53 86 0–8 63 86 3–8 65 87 1–8 74... conditions at the time of gyttja accumulation In the uppermost portion of the gyttja sequence the pollen and diatom successions indicate Guest editors: T Noges, R Eckmann, K Kangur, P Noges, A Reinart, G Roll, H Simola & M Viljanen European Large Lakes Ecosystem changes and their ecological and socioeconomic impacts ˇ T Hang (&) Á V Kalm Á M Milkevicius Institute of Geology, University of Tartu, Vanemuise... Noges, A Reinart, G Roll, H Simola & M Viljanen European Large Lakes Ecosystem changes and their ecological and socioeconomic impacts A Heinsalu (&) Á T Alliksaar Institute of Geology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia e-mail: heinsalu@gi.ee H Luup Á P Noges Á T Noges Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University... Role of sediment and internal loading of phosphorus in shallow lakes Hydrobiologia 50 6–5 09: 13 5–1 45 Wetzel, R G., 2001 Limnology lake and river ecosystems, 3rd edn Academic Press, USA Wilander, A & G Persson, 2001 Recovery from eutrophication: experiences of reduced phosphorus input to the four largest lakes of Sweden Ambio 30: 47 5–4 85 ´ Wilk-Wozniak; E & S Ligeza, 2003 Phytoplankton–nutrient e ˛ relationships... 40 8–4 09: 27 7–2 83 Noges, P & T Noges, 2006 Indicators and criteria to assess ecological status of the large shallow temperate polymictic lakes Peipsi (Estonia/Russia) and Vortsjarv (Estonia) Boreal Environment Research 11: 6 7–8 0 Noges, T., P Noges & R Laugaste, 2003 Water level as the mediator between climate change and phytoplankton composition in a large shallow temperate lake Hydrobiologia 50 6–5 09:... 2003 Changes in shallow lake functioning: response to climate change and nutrient reduction Hydrobiologia 50 6–5 09: 78 9–7 96 Dokulil, M T & K Treubner, 2000 Cyanobacterial dominance in lakes Hydrobiologia 438: 1–1 2 Fogg, G E., 1965 Algal cultures and phytoplankton ecology The University of Wisconsin Press, Madison and Milwaukee Gammeter, S & U Zimmermann, 2000 Changes in phytoplankton productivity and. .. nutrient load and water level in Lake Peipsi demonstrated the synergistic effect of water level and water temperature on nutrients and, via nutrients, on phytoplankton In the period of high external N and P load, high water levels and cool summers (198 5–1 987), there were higher values of Ntot and a higher Ntot:Ptot mass ratio The period with lower water level and warmer summers (200 1–2 003) was characterized... over 198 3–1 991) to 0.37 (averaged over 199 7–2 001) for nitrogen and from 0.032 to 0.020 for phosphorus (Noges et al., 2004) Long-term datasets of nutrients and phytoplankton populations in Lake Peipsi are a 123 Hydrobiologia (2008) 599: 3–1 1 valuable resource for studying the responses of phytoplankton to changes in water level and water temperature and, in particular, the impact of climatedriven changes. .. (2008) 599: 3–1 1 Kangur, K & T Mols Changes in spatial distribution of phosphorus and nitrogen in large north-temperate lowland Lake Peipsi (Estonia/Russia) Hydrobiologia (this issue) doi:10.1007/s10750-007-9204-0 Krzywosz, W., 1999 Relationships between trophic indicators and phytoplankton composition, biomass and photosynthetic activity in small eutrophic lakes Polish Journal of Ecology 47: 1 5–2 7 Laugaste, . alt="" European Large Lakes – Ecosystem changes and their ecological and socioeconomic impacts Developments in Hydrobiology 199 Series editor K. Martens European. Hydrobiology 199 Series editor K. Martens European Large Lakes Ecosystem changes and their ecological and socioeconomic impacts Edited by Tiina No ˜ ges 1 , Reiner