Stability and change of phytoplankton communities in a highly dynamic environment—the case of large, shallow Lake Balaton (Hungary)

Honti, Márk; Istvánovics, Vera; Osztoics, András

doi:10.1007/978-1-4020-6158-5_25

Cited by 12 publications

(14 citation statements)

References 20 publications

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“…In shallow lakes, where wind-induced entrainment of meroplanktonic diatoms is an important process, mean turbidity can approach (Honti et al 2007) or even exceed (Schelske et al 1995) that in the Szamos River. Similarly to the observations made in lakes (Carrick et al 1993;Schelske et al 1995), the formation of resting propagules in fluvial meroplanktonic diatoms might extend the period when meroplanktonic algae are favored in our rivers.…”

Section: Discussionmentioning

confidence: 99%

“…(1) In a modeling study, Honti et al (2010) showed that 10% of the Chl flux at the outflow of the Zala River (drainage area is 1528 km 2 , L 5 100 km, Q 5 4 m 3 s 21 ) represented the necessary inoculation to support the prevailing algal biomass through the entire fluvial network where t w extended to nearly 2 weeks because of a number of small reservoirs. Without reservoirs, t w was estimated to drop to one-tenth of the present value.…”

Section: River Nmentioning

confidence: 99%

“…Such species may dominate during windy summers (Padisá k 1992; Honti et al 2007) or during other times when there is wind-induced resuspension (Padisák and Dokulil 1994;Schelske et al 1995). Carrick et al (1993) argued that meroplanktonic diatoms in Lake Apopka, Florida, were planktonic species adapted to survive long periods on an aphotic bottom by forming resting propagules that quickly rejuvenated upon light exposure when resuspended.…”

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confidence: 99%

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Phytoplankton growth in three rivers: The role of meroplankton and the benthic retention hypothesis

Istvànovic

Honti

2011

Limnology & Oceanography

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We analyzed long-term (5-8 yr) hourly time series of chlorophyll (Chl) converted from fluorescence measurements in relation to discharge and light in three medium-to large-size rivers, where planktonic diatoms dominated during the growing season. Overall, there was an inverse relationship between discharge and Chl. At fine temporal scales, flow pulses were typically accompanied by an increase in diatom Chl. In contrast, chlorophytes were usually diluted. The increase in diatoms was likely due to resuspension of meroplanktonic species from the bottom. The benthic retention hypothesis proposes that rapidly sedimenting diatoms take advantage of a prolonged benthic residence provided that the enhanced retention is sufficient to compensate for slower light-supported growth at the bottom relative to water. This hypothesis was tested with simple growth models. Although the rivers were highly turbid and did not support net growth when flow exceeded a rather low threshold, benthic retention might have favored low-light-adapted algae during more than half of the period when net growth was possible. Among the physical factors, the rate of resuspension might be the critical factor that determines the ultimate success of a meroplanktonic life cycle strategy. The three rivers of this study rarely supported persistent planktonic populations. We propose that self-sustaining populations of riverine algae are primarily based on meroplanktonic diatom species, whereas truly planktonic populations, mostly chlorophytes, depend on periodic inoculations from out-of-channel sources.

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Section: Discussionmentioning

confidence: 99%

Section: River Nmentioning

confidence: 99%

mentioning

confidence: 99%

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Phytoplankton growth in three rivers: The role of meroplankton and the benthic retention hypothesis

Istvànovic

Honti

2011

Limnology & Oceanography

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“…As a result, catastrophic consequences such as species turnover and algae blooms are common in aquatic ecosystems [3,5,6,10]. Thus, studies on the stability of phytoplankton community and its influencing factors are essential to develop appropriate conservation strategies in aquatic ecosystems [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Environmental Factors on the Temporal Stability of Phytoplankton Biomass in a Eutrophic Man-Made Lake

Zhang

Zhao

et al. 2016

Water

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Abstract:The stability of phytoplankton biomass is important in maintaining the health of an aquatic ecosystem. In this study, the main environmental factors and phytoplankton biomass were investigated monthly from May 2011 to April 2013 in a eutrophic lake. The influence of both the mean values and variability (standard deviation) of environmental factors on the temporal stability index (TSI, measured as coefficient of variation) of phytoplankton was analyzed. Complex relationships were observed between the mean environmental factors and phytoplankton TSI: a positive relationship for dissolved oxygen (DO) and pH, a negative relationship for total nitrogen (TN) and ammonia nitrogen (NH 4 + -N), a unimodal relationship for total phosphorus (TP), and no relationship for water temperature (WT). Mean values of DO and pH mainly influenced the stability of phytoplankton through increasing the average total biomass. However, mean TN and NH 4 + -N concentrations destabilized phytoplankton TSI primarily through increasing the variability of community biomass. There were also complex relationships between the variability of environmental factors and phytoplankton TSI: a negative relationship for TN, a unimodal relationship for NH 4 + -N and TP, and no relationship for WT, DO, and pH. The variability of nutrient concentrations mainly affected phytoplankton TSI through influencing the variability of community biomass, while their influence on the average total biomass was weak. Results in this research will be helpful in understanding the influence of environmental factors on the temporal stability of phytoplankton.

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“…U kontekstu njene ekologije u ribnjacima vaţna su istraţivanja fitoplanktona u plitkom jezeru Balaton i ribnjacima u MaĊarskoj (Padisák & Reynolds, 1998;Borics et al, 2000;Honti et al, 2007;Hajnal & Padisák, 2008), u ribnjacima u Ĉeškoj (Pechar, 2000;Hašler et al, 2004;Hašler et al, 2008), u dva plitka jezera u Nemaĉkoj (Mischke, 2003;Wiedner et al, 2008), u plitkim jezerima u Francuskoj (Briand et al, 2002;Brient et al, 2008), u plitkoj akumulaciji u Estoniji (Pedusaar et al, 2010), u hipereutrofnim jezerima i ribnjacima u Belgiji (Degans & De Meester, 2002;Willame et al, 2005;Willame et al, 2006), ali i van Evrope, u plitkom jezeru u Argentini (Sinistro et al, 2007) i eutrofnoj akumulaciji u Brazilu (Fonseca & Bicudo, 2008). Reynolds et al (2002) navode da stanište vrste Planktothrix agardhii odlikuje povećana mutnoća tj.…”

Section: Kvantitativna Analiza Fitoplanktonaunclassified

The effect of different supplemental feed types in semi-intensive production of common carp fry (Cyprinus carpio) on the structure and dynamics of pond ecosystems

Ćirić¹

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Stability and change of phytoplankton communities in a highly dynamic environment—the case of large, shallow Lake Balaton (Hungary)

Cited by 12 publications

References 20 publications

Phytoplankton growth in three rivers: The role of meroplankton and the benthic retention hypothesis

Phytoplankton growth in three rivers: The role of meroplankton and the benthic retention hypothesis

Effects of Environmental Factors on the Temporal Stability of Phytoplankton Biomass in a Eutrophic Man-Made Lake

The effect of different supplemental feed types in semi-intensive production of common carp fry (Cyprinus carpio) on the structure and dynamics of pond ecosystems

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