Early human impact in a 15,000-year high-resolution hyperspectral imaging record of paleoproduction and anoxia from a varved lake in Switzerland

Makri, Stamatina; Rey, Fabian; Gobet, Erika; Gilli, Adrian; Tinner, Willy; Grosjean, Martín

doi:10.1016/j.quascirev.2020.106335

Cited by 23 publications

(38 citation statements)

References 58 publications

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“…S1, supplementary material) with very low uncertainties (ca. 6-8 %) comparable to other studies (Butz et al, 2017;Schneider et al, 2018;Makri et al, 2020;Sanchini et al, 2020). Between ca.…”

Section: Combining Sedimentological and Biogeochemical Data To Infer supporting

confidence: 88%

“…meromixis as described in Makri et al (2020). Bphe a and b is produced by anoxygenic phototrophic purple sulfur and non-sulfur bacteria that proliferate in illuminated anoxic habitats (Yurkov and Beatty, 1998;Madigan and Jung, 2009).…”

Section: Methodsmentioning

confidence: 99%

“…A proper assessment of these changes requires highresolution data that is impossible to reach using HPLC data alone. Yet, the combination of high-resolution (μmscale) calibrated HSI bulk data for TChl and Bphe, combined with scanning XRF and compound specific HPLC data, provides a unique opportunity for paleoproduction and paleooxygenation reconstructions at sub-seasonal scale for multi-millennial-long records (Butz et al, 2017;Makri et al, 2020). This approach is directly applicable to diverse lacustrine (Butz et al, 2017;Schneider et al, 2018;Makri et al, 2020;Sanchini et al, 2020) and potentially marine environments (Hubas et al, 2011(Hubas et al, , 2013 with uncertain past redox state changes.…”

Section: Combining Sedimentological and Biogeochemical Data To Infer mentioning

confidence: 99%

“…This offset can be produced by matrix effects, i.e. the variability of the reflectance of the sediment matrix or substances that absorb in the same range as chlorophylls and their diagenetic products (590-730 nm) (Makri et al, 2020). Interestingly, GSB (isorenieratene) peak between 9200 and 7000 cal BP (Fig.…”

Section: Combining Sedimentological and Biogeochemical Data To Infer mentioning

confidence: 99%

“…The role of human impact with regard to anoxia and interrelated catchment processes (deforestation/afforestation and nutrient inputs) has also been shown in other lakes with diverse timing of human impact onset. For example, Lake Moossee (Makri et al, 2020) and Soppensee (Lotter, 1999) on the Swiss Plateau, Lakes Albano and Nemi in Italy , Lake Zazari in Greece (Gassner et al, 2020) with an early Mid-Holocene human impact, and Lake Szurpiły (Kinder et al, 2019) in the vicinity of Lake Jaczno with a late human impact, mainly in the last 500 years.…”

Section: Th Century Eutrophication Shallow Oxic-anoxic Boundary Anmentioning

confidence: 99%

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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: Combining Sedimentological and Biogeochemical Data To Infer supporting

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Combining Sedimentological and Biogeochemical Data To Infer mentioning

confidence: 99%

Section: Combining Sedimentological and Biogeochemical Data To Infer mentioning

confidence: 99%

Section: Th Century Eutrophication Shallow Oxic-anoxic Boundary Anmentioning

confidence: 99%

See 3 more Smart Citations

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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A Holocene high‐resolution record of aquatic productivity, seasonal anoxia and meromixis from varved sediments of Lake Łazduny, North‐Eastern Poland: insight from a novel multi‐proxy approach

Sanchini

Szidat

Tylmann

et al. 2020

J Quaternary Science

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Anthropogenic eutrophication and spreading anoxia in freshwater systems is a global concern. Little is known about anoxia in earlier historic times under weaker human impact, or under prehistoric natural conditions with different trophic, land cover and climatic regimes. We use a novel approach that combines high-resolution hyperspectral imaging with µ-XRF and HPLC-pigment data, which allows us to assess chloropigments (productivity) and bacteriopigments (anoxia) at seasonal subvarve-scale resolution. Our~9700 cal a BP varved sediment record from NE Poland suggests that productivity increased stepwise from oligotrophic Early Holocene conditions (until 9200 cal a BP) to mesotrophic conditions in the Mid-and Late Holocene. Natural eutrophication was mainly a function of progressing landscape evolution with intense weathering under dense forest and warm-moist climatic conditions. Generally, anoxia increased with increasing productivity. Seasonal anoxia and some multi-decadal periods of meromixis were the common mixing patterns throughout the Holocene except for a period of persisting meromixis between~5200 and 2000 cal a BP. Anthropogenic deforestation around 400 cal a BP resulted in substantially better lake oxygenation despite high productivity. In this small lake, aquatic productivity and lakeshore forest cover (wind shield) were more important factors controlling oxic/anoxic conditions than Holocene temperature variability.

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Neolithic human activity caused eutrophication in small central European lakes

Grudzinska,

Courtney-Mustaphi,

Rey

et al. 2024

CATENA

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Early human impact in a 15,000-year high-resolution hyperspectral imaging record of paleoproduction and anoxia from a varved lake in Switzerland

Cited by 23 publications

References 58 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

A Holocene high‐resolution record of aquatic productivity, seasonal anoxia and meromixis from varved sediments of Lake Łazduny, North‐Eastern Poland: insight from a novel multi‐proxy approach

Neolithic human activity caused eutrophication in small central European lakes

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