The role of water-level fluctuations in shallow lake ecosystems – workshop conclusions

Coops, H.; Beklioğlu, Meryem; Crisman, Thomas L.

doi:10.1023/b:hydr.0000008595.14393.77

Cited by 448 publications

(323 citation statements)

References 11 publications

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“…Shallow lakes, with their low depth and large surface: volume ratio, are sensitive to warming (Coops et al, 2003;Meerhoff et al, 2012). Macrophytes are key components in the ecological functioning of shallow lake ecosystems and they are affected by warming in various ways (Kosten et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of warming on Potamogeton crispus growth and tissue stoichiometry in the growing season

et al. 2016

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a b s t r a c tIncreased water temperature due to climate change may affect macrophyte phenology and nutrient content. In experimentally heated mesocosms the emergence and growth of Potamogeton crispus shoots under ambient and increased temperatures (+4.5 • C) were tracked over 55 days. At the end of the experiment we measured the C, N and P content of the P. crispus leaves. The results indicate that warming advanced the emergence of P. crispus shoots by approximately 10 days, whereas the final number of shoots and plant biomass were similar in ambient and heated tanks. Furthermore, warming influenced the ecological stoichiometry of this plant significantly. Leaf C and N content were both less in the heated tanks resulting in an increase in C:N ratios, whereas P content and C:P and N:P ratios were not affected.

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Section: Introductionmentioning

confidence: 99%

Effects of warming on Potamogeton crispus growth and tissue stoichiometry in the growing season

et al. 2016

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“…Water level fluctuations have important effects on estuary (Costa et al 2009), wetland (Chow-Fraser et al 1998), lake (Osborne et al 1987;Gulati et al 2008;Coops et al 2003), reservoir (Naselli-Flores and Barone 1997; Donagh et al 2009;Arfi 2005;Cott et al 2008) and other ecosystems. It has been reported that water level was the main factor controlling phytoplankton biomass, species diversity, evenness and community change rate in the river, and in the lake, different phytoplankton groups (C-to S-strategists and R-strategists) responded to different water level phases (de Emiliani 1997).…”

Section: Introductionmentioning

confidence: 99%

Weekly dynamics of phytoplankton functional groups under high water level fluctuations in a subtropical reservoir-bay

Wang

Cai

et al. 2010

Aquat Ecol

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In reservoirs, water level fluctuations strongly influence phytoplankton development. However, studies on the response of phytoplankton in the reservoir-bay to water level fluctuations are very scarce, especially in the highly dynamic reservoir system, for instance, the Three Gorges Reservoir (TGR) on the Yangtze River in China. Therefore, we carried out weekly monitoring in a typical tributary bay-Xiangxi Bay of the TGR from March 2008 to March 2009 analyze the dynamics of phytoplankton functional groups, as well as their response to the water level fluctuations and other environmental conditions. The phytoplankton functional groups G (short, nutrient-rich water columns with high light and without nutrient deficiency), M (dielly mixed layers of small eutrophic, low latitude with high insolation and without flushing and low total light) and Lo (summer epilimnia in mesotrophic lakes with segregated nutrients and without prolonged or deep mixing) were the most important in biomass, mainly represented by Pandorina morum and Eudorina elegans, Microcystis aeruginosa, Peridiniopsis niei and Ceratium hirundinella, respectively. The dominant functional groups had close relationships with the water level fluctuations, light and nutrient, etc. Principal components analysis and redundancy analysis indicated that phytoplankton functional groups in Xiangxi Bay were restricted by the mixing regime and other abiotic variables under the influences of the mixing regime. In Xiangxi Bay, the water level fluctuation showed significant correlations with many physicochemical variables, including the mixing depth (r = 0.97, p \ 0.001) and the relative water column stability (r = -0.80, p \ 0.001). The study implied that water level fluctuations had complex influence on environmental changes and selecting for phytoplankton functional groups in a highly dynamic reservoir-bay. The important characteristics of the dominant phytoplankton functional groups in Xiangxi Bay were also discussed.

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“…Lodge, 1985;Underwood et al, 1992;Costil & Clement, 1996), which is strongly affected by water level fluctuations (e.g. Coops et al, 2003;Furey et al, 2004;Poznańska et al, 2009). The effect of water level changes on fauna and flora depends on their range, duration, regularity and frequency, as well as on season, basin morphometry, bottom type and climate (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of substratum drying on the survival and migrations of a freshwater pulmonate snail Planorbarius corneus (Linnaeus, 1758)

et al. 2014

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Pulmonate snails inhabiting the near-shore zone of water bodies experience air exposure during water level fluctuations and some of them are known to survive long time in temporary basins. In laboratory, we investigated survival and behavioural defences (horizontal migrations and burrowing in substratum) of adult pulmonate snails Planorbarius corneus during substratum (sand and organic-rich) drying. We examined horizontal migrations at shorter and longer distances (24 and 48 cm), during gradual (8 days) or sudden water level drop rates. P. corneus was remarkably resistant to substratum drying, surviving 50 days on sand and more than 53 days on organic-rich bottom. The snails followed the retreating water level and grouped in the submerged parts of experimental tanks. This response was reduced on organic-rich bottom at a longer distance and with water level decreasing suddenly. Moreover, snails exposed to drying buried shallowly in both bottom types. Thus, P. corneus exhibited variable and efficient strategies enabling its survival during water level fluctuations, including active migrations following the retreating water level and burying in sediments.

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The role of water-level fluctuations in shallow lake ecosystems – workshop conclusions

Cited by 448 publications

References 11 publications

Effects of warming on Potamogeton crispus growth and tissue stoichiometry in the growing season

Effects of warming on Potamogeton crispus growth and tissue stoichiometry in the growing season

Weekly dynamics of phytoplankton functional groups under high water level fluctuations in a subtropical reservoir-bay

Effect of substratum drying on the survival and migrations of a freshwater pulmonate snail Planorbarius corneus (Linnaeus, 1758)

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