Holocene shifts in the primary producer community of large, shallow European Lake Peipsi, inferred from sediment pigment analysis

Tõnno, Ilmar; Nauts, Kristiina; Belle, Simon; Nõmm, Monika; Freiberg, Rene; Kõiv, Toomas; Alliksaar, Tiiu

doi:10.1007/s10933-019-00067-3

Cited by 13 publications

(10 citation statements)

References 54 publications

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“…Brown siliceous algae are well adapted and tolerant algae species that thrive in oligotrophic conditions in symbiosis with other algae species and bacteria (Bird and Kalff, 1986;Wetzel, 2001). Similar observations of algae composition were made in Lake Peipsi (Tõnno et al, 2019;Estonia) and Lake…”

Section: Low Trophic Levels With a Deep Oxic-anoxic Boundarysupporting

confidence: 80%

“…Prolonged periods of anoxia leading to intense recycling of phosphorous from the sediments would decrease the N:P ratio in the water column promoting nitrogen fixation by N-fixing algae (Howarth et al, 1999;Vitousek et al, 2002). Similar trends in lake trophy evolution are reported from nearby Lake Szurpiły (Kinder et al, 2019) and Lakes Albano and Peipsi (Lami et al, 2000;Tõnno et al, 2019). An increase of Chromatium (okenone, PSB) over Chlorobium (isorenieratene, GSB) with increasing lake trophy has been reported from other lakes, e.g.…”

Section: Gradually Increasing Trophy Levels With a Shallower Oxic-anomentioning

confidence: 83%

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Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Makri¹,

Lami²,

Tu³

et al. 2020

Preprint

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Abstract. Global spread of hypoxia and altered mixing regimes in freshwater systems is a growing major environmental concern. Climate change and human impact are expected to increasingly deteriorate aquatic ecosystems. The study of processes and drivers of such changes in the past provides a great asset for prevention and remediation in the future. We used a multi-proxy approach combining high-resolution Hyperspectral Imaging (HSI) pigment data, with specific HPLC chlorophylls and carotenoids to examine Holocene trophic state changes and anoxia evolution in meromictic Lake Jaczno, NE Poland. A redundancy analysis RDA including pollen-inferred vegetation cover, temperature and human impacts provides insight into specific conditions and drivers of changing trophic and redox states in the lake. Anoxic and sulfidic conditions established in Lake Jaczno after initial basin infilling 9500 years ago. Until 6700 cal BP, lake trophy was relatively low, water turbidity was high, and green sulfur bacteria (GSB) were abundant within the phototrophic community, suggesting a deep oxic–anoxic boundary and weak stratification. The period between 6700–500 cal BP is characterized by constantly increasing lake production and a gradual shift from GSB to purple sulfur bacteria (PSB), suggesting a shallower oxic–anoxic boundary and pronounced stratification. Yet, the presence of spheroidene and speroidenone in the sediments indicates intermittent anoxia. After 500 cal BP, increasing human impact, deforestation and intensive agriculture promoted lake eutrophication, with a shift to PSB dominance and establishment of permanent anoxia and meromixis. Our study unambiguously documents the legacy of human impact on processes determining eutrophication and anoxia.

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Section: Low Trophic Levels With a Deep Oxic-anoxic Boundarysupporting

confidence: 80%

Section: Gradually Increasing Trophy Levels With a Shallower Oxic-anomentioning

confidence: 83%

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Makri¹,

Lami²,

Tu³

et al. 2020

Preprint

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“…average temperatures) over the period after ice-recession from the area [21,47,48]. The algal community, a keystone functional group of lake ecosystems [14], became gradually more abundant in biomass when both average winter and summer temperatures rose, and most probably formed blooms during the Holocene Thermal Maximum (HTM, ~8.0-4.0 kyr; [18,49]). Thereafter, following climate cooling, the algal biomass decreased.…”

Section: (D) Environmental Drivers Disturbance Periods and Change Pomentioning

confidence: 99%

“…Primary producers are the base of most aquatic food webs, therefore variability in their biomass and productivity leads to predominant control over the whole lacustrine ecosystem [13,14]. Several primary producers in a lake are short-living benthic or pelagic algae that can respond rapidly to changing environmental conditions such as water temperature, humification and nutrient load [15][16][17][18]. Naturally, the lake responds to a warmer climate with increased water temperature, so thermophilic bloom-forming cyanobacteria could gain a competitive advantage over other algal groups in the near future [19,20] in temperate regions.…”

Section: Introductionmentioning

confidence: 99%

Drivers of change and ecosystem status in a temperate lake over the last Post-Glacial period from 14.5 kyr

Tõnno

Freiberg

Talas

et al. 2020

Preprint

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Understanding the long-term dynamics of ecological communities on the centuries-to-millennia scale is important for explaining present-day biodiversity patterns. Placing these patterns in a historical context could yield reliable tools for predicting possible future scenarios. Paleoarchives of macro-and micro-fossil remains, and most importantly biomarkers such as fossil pigments and ancient DNA present in various sedimentary deposits, allow long term changes in ecological communities to be analysed. We use recent compilations of data including fossil pigments, metabarcoding of sedimentary ancient DNA and microfossils together with data analysis to understand the impact of gradual versus abrupt climate changes on a lake`s ecosystem status over the last 14.5 kyr. We give examples of hypotheses that need long-term data, which can be addressed using well-established paleoproxy variables. These variables describe the climate, together with vegetation change and the appearance of anthropogenic forcing, either as a gradual change or an abrupt event. We were able to detect abrupt changes in the lake ecosystem during the stable period of the Holocene Thermal Maximum and we highlight the increased frequency and degree of perturbation in lakes due to non-immediate human activity over a larger region. Both observations demonstrate an impaired relationship between a gradual external driver and ecosystem response and apply to future scenarios of climate warming and increased human impact in north-eastern Europe.

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“…Rising mean global temperature can potentially worsen lake anoxia by enhancing water stratification and algal blooms (Adrian et al, 2009;Woolway and Merchant, 2019). Higher lake trophy and reducing conditions in anoxic bottom waters can have diverse and profound negative effects on lake ecosystems, such as toxic algal blooms, fish kills, biodiversity loss (Smol, 2010;Battarbee and Bennion, 2012;Makri et al, 2019), and nutrient recycling into the water column from the sediment through redox processes (Gächter, 1987;Tu et al, 2019). Hence, the global spread of hypoxia is growing into a major environmental concern (Diaz and Rosenberg, 2008).…”

Section: Introductionmentioning

confidence: 99%

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Makri

Lami

et al. 2021

Biogeosciences

View full text Add to dashboard Cite

Abstract. Global spread of hypoxia and less frequent mixing in lakes is a major growing environmental concern. Climate change and human impact are expected to increasingly deteriorate aquatic ecosystems. The study of processes and drivers of such changes in the past provides a great asset for prevention and remediation in the future. We used a multiproxy approach combining high-resolution bulk pigment data measured by hyperspectral imaging (HSI) with lower-resolution specific chlorophyll types and carotenoids measured by HPLC to examine Holocene trophic state changes and anoxia evolution in the meromictic Lake Jaczno, NE Poland. A redundancy analysis (RDA) including pollen-inferred vegetation cover, temperature and human impacts provides insight into specific conditions and drivers of changing trophic and redox states in the lake. Anoxic and sulfidic conditions were established in Lake Jaczno after initial basin infilling 9500 years ago. Until 6700 cal BP, lake trophy was relatively low, water turbidity was high and green sulfur bacteria (GSB) were abundant within the phototrophic community, suggesting a deep oxic–anoxic boundary and weak stratification. The period between 6700–500 cal BP is characterized by constantly increasing lake production and a gradual shift from GSB to purple sulfur bacteria (PSB), suggesting a shallower oxic–anoxic boundary and pronounced stratification. Yet, the presence of spheroidene and speroidenone in the sediments indicates intermittent anoxia. After 500 cal BP, increasing human impact, deforestation and intensive agriculture promoted lake eutrophication, with a shift to PSB dominance and establishment of permanent anoxia and meromixis. Our study unambiguously documents the legacy of human impact on processes determining eutrophication and anoxia.

show abstract

Holocene shifts in the primary producer community of large, shallow European Lake Peipsi, inferred from sediment pigment analysis

Cited by 13 publications

References 54 publications

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Drivers of change and ecosystem status in a temperate lake over the last Post-Glacial period from 14.5 kyr

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

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