Winter phytoplankton communities in different depths of three mesotrophic lakes (Łęczna-Włodawa Lakeland, Eastern Poland)

Pasztaleniec, Agnieszka; Lenard, Tomasz

doi:10.2478/s11756-008-0062-7

Cited by 10 publications

(7 citation statements)

References 18 publications

(35 reference statements)

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“…In the present study, both the numbers and biomass of phytoplankton were higher than those reported previously for mesotrophic/eutrophic lakes (Agbeti & Smol, 1995;Pasztaleniec & Lenard, 2008;Wojciechowska & Lenard, 2014). An intense bloom of phytoplankton, caused by the colonial chrysophyte S. uvella, was observed in April.…”

Section: Discussioncontrasting

confidence: 75%

Autotrophic and heterotrophic plankton under ice in a eutrophic temperate lake

Kalinowska

Grabowska

2016

Hydrobiologia

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Ice cover can considerably influence the food web structure and dynamics of lake ecosystems during winter. The aim of this study was to test the hypothesis that, due to unfavourable conditions, abundances of planktonic organisms are low under ice. The components of the microbial loop (nanoflagellates, ciliates) and the classical food web (algae, rotifers, crustaceans) were investigated in a eutrophic lake from January to April, at 7-day intervals. The phytoplankton was dominated by the mixotrophic chrysophyte Synura uvella, which formed an intense phytoplankton bloom. Nanoflagellates (mostly heterotrophic forms) and ciliates (oligotrichs, prostomatids) were present in relatively high numbers. Rotifers were represented by the algivorous taxa (Notholca squamula, Polyarthra dolichoptera) and reached surprisingly high abundances. There were no significant correlations between physical parameters and protists, but correlations were apparent between the thickness of the ice and the numbers of cyanobacteria, diatoms (negative) and chrysophytes (positive). The absence of crustaceans and relationships between rotifers and both algae and nanoflagellates indicate that these groups were probably a crucial factor determining the abundance and composition of the rotifer community. These results suggest that the microbial loop had a central role in the functioning of the ecosystem under ice in this eutrophic lake.

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Section: Discussioncontrasting

confidence: 75%

Autotrophic and heterotrophic plankton under ice in a eutrophic temperate lake

Kalinowska

Grabowska

2016

Hydrobiologia

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“…This is often attributed to severe abiotic conditions associated with extended ice cover [15,27,28]. Underwater light conditions in our investigation were not quantified.…”

Section: Discussionmentioning

confidence: 91%

“…Winter is generally considered to be an unfavorable period for phytoplankton growth in boreal, high-latitude regions [ 3 , 7 , 19 ]. This is often attributed to severe abiotic conditions associated with extended ice cover [ 15 , 27 , 28 ]. Underwater light conditions in our investigation were not quantified.…”

Section: Discussionmentioning

confidence: 99%

“…A similar circumstance has been described for hypertrophic Lake Utah (USA), where concentrations of mineral and organic phosphorus are very high [ 3 ], and in shallow lakes of North Dakota, USA [ 7 ]. The euglenoids and cryptomonads flagellates are well known to typify cold waters, tending to prosper under ice in water-bodies of various types, invoking their cold-resistance, mobility and mixotrophy [ 7 , 15 , 19 , 28 , 41 , 42 ]. Almost complete disappearance of zooplankton towards the end of winter is peculiar to Lake Nero [ 26 ].…”

Section: Discussionmentioning

confidence: 99%

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The structure of winter phytoplankton in Lake Nero, Russia, a hypertrophic lake dominated by Planktothrix-like Cyanobacteria

2013

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BackgroundThe permanent dominance of Planktothrix-like сyanobacteria has been often reported for shallow eutrophic\hypertrophic lakes in central Europe in summer\autumn. However studies on phytoplankton growth under ice cover in nutrient-rich lakes are very scarce. Lake Nero provides a good example of the contrasting seasonal extremes in environmental conditions. Moreover, the ecosystem underwent a catastrophic transition from eutrophic to hypertrophic 2003–05, with dominance of filamentous cyanobacteria in summer\autumn. Towards the end of the period of ice cover, there is an almost complete lack of light and oxygen but abundance in nutrients, especially ammonium nitrogen, soluble reactive phosphorus and total phosphorus in lake Nero. The aim of the present study was to describe species composition and abundance of the phytoplankton, in relation to the abiotic properties of the habitat to the end of winters 1999–2010. We were interested if Planktothrix-like сyanobacteria kept their dominant role under the ice conditions or only survived, and how did the under-ice phytoplankton community differ from year to year.ResultsSamples collected contained 172 algal taxa of sub-generic rank. Abundance of phytoplankton varied widely from very low to the bloom level. Cyanobacteria (Limnothrix, Pseudanabaena, Planktothrix) were present in all winter samples but did not always dominate. Favourable conditions included low winter temperature, thicker ice, almost complete lack of oxygen and high ammonium concentration. Flagellates belonging to Euglenophyta and Cryptophyta dominated in warmer winters, when phosphorus concentrations increased.ConclusionA full picture of algal succession in the lake may be obtained only if systematic winter observations are taken into account. Nearly anoxic conditions, severe light deficiency and high concentration of biogenic elements present a highly selective environment for phytoplankton. Hypertrophic water bodies of moderate zone covered by ice in winter and dominated by Planktothrix - like сyanobacteria in summer/autumn may follow several scenarios in the end of winter. It may be intense proliferation сyanobacteria normally dominating in summer, or the switch to the other species like the euglenoids and cryptomonads flagellates, or almost total depletion of phytoplankton.

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“…Low light conditions in spring caused by a white ice layer and/or snow on ice are critical for the development of primary producers and consumers as their growth and reproduction is dependent on light and convection underneath ice 37,38 . Most vulnerable to white ice conditions and snow on ice are photoautotrophs in lakes 39 , in particular nonmotile photoautotrophs that are dependent on radiatively-driven convection to reach sufficient light (e.g., diatoms) 40,41 . Motile taxa can have an advantage during low light conditions under-ice 13 .…”

Section: Light Transmittance Through White Ice and Ecological Effectsmentioning

confidence: 99%

Towards critical white ice conditions in lakes under global warming

et al. 2022

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The quality of lake ice is of uppermost importance for ice safety and under-ice ecology, but its temporal and spatial variability is largely unknown. Here we conducted a coordinated lake ice quality sampling campaign across the Northern Hemisphere during one of the warmest winters since 1880 and show that lake ice during 2020/2021 commonly consisted of unstable white ice, at times contributing up to 100% to the total ice thickness. We observed that white ice increased over the winter season, becoming thickest and constituting the largest proportion of the ice layer towards the end of the ice cover season when fatal winter drownings occur most often and light limits the growth and reproduction of primary producers. We attribute the dominance of white ice before ice-off to air temperatures varying around the freezing point, a condition which occurs more frequently during warmer winters. Thus, under continued global warming, the prevalence of white ice is likely to substantially increase during the critical period before ice-off, for which we adjusted commonly used equations for human ice safety and light transmittance through ice.

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Winter phytoplankton communities in different depths of three mesotrophic lakes (Łęczna-Włodawa Lakeland, Eastern Poland)

Cited by 10 publications

References 18 publications

Autotrophic and heterotrophic plankton under ice in a eutrophic temperate lake

Autotrophic and heterotrophic plankton under ice in a eutrophic temperate lake

The structure of winter phytoplankton in Lake Nero, Russia, a hypertrophic lake dominated by Planktothrix-like Cyanobacteria

Towards critical white ice conditions in lakes under global warming

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