Turbulent mixing and phytoplankton spring bloom development in a deep lake

Peeters, Frank; Straile, Dietmar; Lorke, Andreas; Ollinger, Dieter

doi:10.4319/lo.2007.52.1.0286

Cited by 96 publications

(119 citation statements)

References 41 publications

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“…This is an experimentally backed approach (Norberg and DeAngelis 1997) commonly used in minimal models of phytoplankton-zooplankton interaction (Scheffer et al 2001;Peeters et al 2007). The algal growth rate, which is dependent on water temperature, light intensity I (W m 22 ), silicate concentration Si (mg L 21 ), and phosphorus cell quota Q (mg P mm 23 ), was calculated as…”

Section: Symbolmentioning

confidence: 99%

Phytoplankton response to climate warming modified by trophic state

Huber

Adrian

Gerten

2008

Limnology & Oceanography

113

104

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We investigated the combined effect of reduced phosphorus supply and warmer winter and spring conditions on the diatom spring bloom of a shallow lake. Simulations with a simple dynamic model indicated that reduced ice cover and increasing water temperatures resulted in a more intense and earlier bloom independently of phosphorous concentrations. However, whereas the collapse of the bloom was caused by silicate limitation under high phosphorus supply, it was caused by Daphnia grazing under reduced phosphorus supply. This switch from a bottom-up to a top-down driven collapse of the diatom spring bloom explains why, despite similarly mild winters, the bloom was observed earlier under high than under reduced phosphorus supply in the lake studied. Thus, an assessment of possible changes in nutrient loading is crucial when anticipating how phytoplankton could evolve under future climate warming.

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Section: Symbolmentioning

confidence: 99%

Phytoplankton response to climate warming modified by trophic state

Huber

Adrian

Gerten

2008

Limnology & Oceanography

113

104

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“…In deep lakes, the onset of the spring phytoplankton bloom is coupled to the onset of thermal stratification, i.e. the transition from strong to weak turbulent mixing (Peeters et al 2007b), which increases the mean light exposure of the cells, but limits subsequent nutrient supply (Wetzel 2001;Winder and Schindler 2004b). Studies in European lakes found that the duration of deep mixing after warmer winters decreased and earlier lake stratification promoted earlier onset of the phytoplankton bloom in spring (Weyhenmeyer et al 2002;Peeters et al 2007a).…”

Section: Introductionmentioning

confidence: 99%

Effects of spring warming and mixing duration on diatom deposition in deep Tiefer See, NE Germany

et al. 2016

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Monitoring during three meteorologically different spring seasons in 2012, 2013, and 2014 revealed that temperature increase in spring, which influences spring lake mixing duration, markedly affected nutrient availability and diatom deposition in a sediment trap close to the bottom of deep Tiefer See, NE Germany. Deposition of Stephanodiscus taxa and small Cyclotella taxa was much higher after late ice out and a deep, short lake mixing period in spring 2013, compared to that after gradual warming and lengthy lake mixing periods in spring 2012 and 2014, when only brief or marginal ice cover occurred. Availability of dissolved Si and P was 33% and 20% higher, respectively, in 2013 compared to 2014. The observed relation between high (low) diatom deposition and short (lengthy) mixing duration in spring was applied to varved sediments deposited between AD 1924 and 2008. Low detrital Si content in trapped material and a sediment core enabled use of µXRF-counts of Si as a proxy for diatom silica. The spring mixing duration for 1951-2008 was derived from FLake-model calculations. The spring warming duration related to lake mixing was approximated from air temperatures for 1924-2008 using the dates when daily mean air temperature exceeded 5°C (start) and 10°C (end). Diatom silica deposition showed a significant (p<0.0001) inverse linear relationship with the modeled spring mixing duration (R² = 0.36) and the spring warming duration (R² = 0.28). In both cases, the relationship is strengthened when data from the period of low diatom production (1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005) is excluded (R² = 0.59 and R² = 0.35). Part of this low diatom production is related to external nutrient supply that favored growth of cyanobacteria at the expense of diatoms. This approach shows that diatom Si deposition was strongly influenced by the availability of light and nutrients, related to the duration of lake mixing and warming in spring, during most of the studied period. The remaining unexplained variability, however, indicates that additional factors influence Si deposition. Further tests in other deep, temperate lakes are necessary to verify if this relation is a common feature and consequently, if diatom Si can be used as a proxy for spring mixing duration in such lakes.

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“…Henson et al (2006) studied the effect of meteorological conditions on interannual variability in timing and magnitude of spring bloom in the Irminger Basin, North Atlantic. Peeters et al (2007b) analyzed to what extent the onset and early development of the spring phytoplankton bloom depends on seasonal changes in turbulent mixing, solar radiation and water temperature. Henson (2007) pointed out that the onset of water column stability is closely linked to the timing of the phytoplankton spring bloom.…”

Section: Introductionmentioning

confidence: 99%

Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China

Cai

et al. 2011

Limnologica

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a b s t r a c tThe increased air temperature is expected to have important driver on spring phytoplankton dynamics. To test whether spatial heterogeneity modifies the synchronous responses of phytoplankton to regional temperature driver, we evaluate temporal coherences for physical factors (temperature, water stability and non-algal light extinction), nutrients (nitrogen, phosphorus and silicon), and biomass and density of phytoplankton by Pearson correlation analysis and synchrony for phytoplankton community dynamics by Mantel test and nonmetric multi-dimensional scaling (NMS), during spring bloom (February 23-April 28, 2005) within Xiangxi Bay, a high spatial gradient bay of Three-Gorges Reservoir (China). The high level of temporal coherences for surface water temperature (r = 0.946, p < 0.01) and relative water column stability (r = 0.750, p < 0.01) were found between pair sites (A and B), in which the increase trends occurred with increase in regional air temperature during the study period. However, the low synchrony for phytoplankton dynamics were indeed observed between Site A and B, especially for the density of common dominant taxa (Cyclotella spp.: r = 0.155, p = 0.388) and community structure (Mantel test: r = 0.351). Moreover, the local habitat characteristics such as nutrient (nitrogen and phosphorus) and non-algal light extinction showed low levels of temporal coherence. It indicated that local community of phytoplankton varies rather independently within the single lentic bay with high spatial heterogeneity and that dispersal of algal organisms among locations cannot overwhelm out these local dynamics. Contrary to many studies, the present results argued that, in a small geographic area (i.e., a single reservoir bay of approximately 24 km length), spatial gradients also may influence spring phytoplankton response to regional temperature driver.

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Turbulent mixing and phytoplankton spring bloom development in a deep lake

Cited by 96 publications

References 41 publications

Phytoplankton response to climate warming modified by trophic state

Phytoplankton response to climate warming modified by trophic state

Effects of spring warming and mixing duration on diatom deposition in deep Tiefer See, NE Germany

Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China

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