The occurrence of the Dinophyte species Gymnodinium uberrimum and Peridinium willei in German reservoirs

Niesel, Verena; Hoehn, Eberhard; Sudbrack, Ralf; Willmitzer, Hartmut; Chorus, Ingrid

doi:10.1093/plankt/fbm017

Cited by 18 publications

(15 citation statements)

References 22 publications

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“…The biomass of phytoplankton was dominated by Gymnodinium uberrimum, a naked dinoflagellate that preferentially inhabits nutrient-rich surficial waters when the water column is fully mixed during the dynamic phase (Niesel et al, 2007), but moves to deeper water in summer when the reservoir becomes thermally stratified (Tilzer, 1973). Also, a decrease of d 15 N in spring and summer is a common trait of stratified lakes (Visconti and Manca, 2011;Visconti et al, 2013), which can be attributed to nutrient recycling by zooplankton in the epilimnion.…”

Section: Discussionmentioning

confidence: 99%

Spatiotemporal dynamics of C and N isotopic signature of zooplankton: a seasonal study on a man-made lake in the Mediterranean region

Fadda

Rawcliffe

Padedda

et al. 2014

Ann. Limnol. - Int. J. Lim.

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-Reservoirs are subject to severe fluctuations in the water level from seasonal and interannual climatic variations, as well as abstraction for irrigation, hydropower, and drinking water. This can affect the matter and energy transfer through the food web, of which zooplankton is of crucial importance. We traced seasonal changes in the carbon and nitrogen stable isotope signatures of suspended particulate matter and crustacean zooplankton from a small Mediterranean reservoir. The d 15 N SPM isotopic signature were well reflected in the herbivorous cladocerans. d 15 N of the calanoid and cyclopoid copepods were at least 3‰ greater than for the herbivorous cladocera, suggesting their potential use as a food resource. d 13 C of predatory copepods were also consistent with seasonal fluctuations in the d 13 C SPM baseline, except during the heavy rains in early spring, when they were observably rich in lipids with a higher C/N ratio, suggesting that they had entered dormancy and were not actively feeding in the water column. This indicates the importance of taking into account not only the seasonality, but the community dynamics and trophic level of zooplankton taxa when interpreting stable isotope studies.

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Section: Discussionmentioning

confidence: 99%

Spatiotemporal dynamics of C and N isotopic signature of zooplankton: a seasonal study on a man-made lake in the Mediterranean region

Fadda

Rawcliffe

Padedda

et al. 2014

Ann. Limnol. - Int. J. Lim.

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“…Parvodinium umbonatum tolerates wide variations in temperature, pH, TP and dissolved inorganic carbon (Lessmann et al ; Grigorszky et al ), but the presence of G . uberrimum in rock pools contradicts its reported preference for low pH (<8) and TP concentrations (<25 μg L −1 , Niesel et al ). However, this dinoflagellate was also associated with a wide temperature range, high light and non‐stratified conditions (Niesel et al ).…”

Section: Discussionmentioning

confidence: 85%

“…uberrimum in rock pools contradicts its reported preference for low pH (<8) and TP concentrations (<25 μg L −1 , Niesel et al ). However, this dinoflagellate was also associated with a wide temperature range, high light and non‐stratified conditions (Niesel et al ).…”

Section: Discussionmentioning

confidence: 85%

“…In the two shallow pools, the distribution of Parvodinium umbonatum (Ådgrundet) correlated negatively and Gymnodinium uberrimum (Storgrund) positively with temperature in the middle of August. Parvodinium umbonatum tolerates wide variations in temperature, pH, TP and dissolved inorganic carbon (Lessmann et al 2000;Grigorszky et al 2003), but the presence of G. uberrimum in rock pools contradicts its reported preference for low pH (<8) and TP concentrations (<25 μg L −1 , Niesel et al 2007). However, this dinoflagellate was also associated with a wide temperature range, high light and non-stratified conditions (Niesel et al 2007).…”

Section: Discussionmentioning

confidence: 99%

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Phytoplankton, physical and chemical microscale variations in three brackish rock pools

Häggqvist

Lindholm

2016

Phycological Research

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SUMMARY Variations at the microscale in phytoplankton distribution with respect to physical and chemical variables in three brackish rock pools of different depth, size and exposure were studied during the growth season. Three hypotheses were made about the microspatial characteristics of the rock pool habitat: (i) there are distinct microscale variations in physical and chemical variables, (ii) the microscale distribution of phytoplankton is related to characteristic physical and/or chemical variables, and (iii) microscale variations are more pronounced in deep rock pools. Variations were studied at a 10 cm scale by close interval siphon sampling. Physical and chemical variations were small irrespective of rock pool. Prevailing weather, as well as the similar round basin shape of the pools contributed to the similarities. Variations in phytoplankton microscale distributions were clear and consistent throughout the study period, and less variable in the deepest pool compared to the shallower ones. The distribution of dominant phytoplankton species correlated with microscale variations in temperature, dissolved oxygen and pH, often during seasonal minima or maxima. The microscale correlations implied that short reaction times of phytoplankton enabled them to exploit, or be influenced by, brief, local variations. The results demonstrated the importance of studies at fine scales to disentangle processes even in shallow weather‐influenced ecosystems.

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“…At the same time, insufficient light conditions favor mixotrophic species in the phytoplankton competition, and dinoflagellates are potential mixotrophs; in particular, bacterivory of G. uberrimum has been reported (Callieri et al. 2006, Niesel et al. 2007).…”

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confidence: 99%

Cell-Specific Extracellular Phosphatase Activity of Dinoflagellate Populations in Acidified Mountain Lakes1

Novotná

Nedbalová

Kopáček

et al. 2010

Journal of Phycology

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High bulk extracellular phosphatase activity (PA) suggested severe phosphorus (P) deficiency in plankton of three acidified mountain lakes in the Bohemian Forest. Bioavailability of P substantially differed among the lakes due to differences in their P loading, as well as in concentrations of aluminum (Al) and its species, and was accompanied by species-specific responses of phytoplankton. We combined the fluorescently labeled enzyme activity (FLEA) assay with image cytometry to measure cellspecific PA in natural populations of three dinophyte species, occurring in all the lakes throughout May-September 2007. The mean cell-specific PA varied among the lakes within one order of magnitude: 188-1,831 fmol AE cell )1 AE h )1 for Gymnodinium uberrimum (G. F. Allman) Kof. et Swezy, 21-150 fmol AE cell )1 AE h )1 for Gymnodinium sp., and 22-365 fmol AE cell )1 AE h )1 for Peridinium umbonatum F. Stein. To better compare cell-specific PA among the species of different size, the values were normalized per unit of cell biovolume (amol AE lm )3 AE h )1 ) for further statistical analysis. A step-forward selection identified concentrations of total and ionic Al together with pH as significant factors (P < 0.05, Monte Carlo permutation test), explaining cumulatively 57% of the total variability in cell-specific PA. However, this cell-specific PA showed an unexpected reverse trend compared to an overall gradient in P deficiency of the lake plankton. The autecological insight into dinophyte cell-specific PA therefore suggested other factors, such as light availability, mixotrophy, and ⁄ or zooplankton grazing, causing further PA variations among the acidified lakes.

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The occurrence of the Dinophyte species Gymnodinium uberrimum and Peridinium willei in German reservoirs

Cited by 18 publications

References 22 publications

Spatiotemporal dynamics of C and N isotopic signature of zooplankton: a seasonal study on a man-made lake in the Mediterranean region

Spatiotemporal dynamics of C and N isotopic signature of zooplankton: a seasonal study on a man-made lake in the Mediterranean region

Phytoplankton, physical and chemical microscale variations in three brackish rock pools

Cell-Specific Extracellular Phosphatase Activity of Dinoflagellate Populations in Acidified Mountain Lakes1

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