Quantifying the effect of testate amoeba decomposition on peat-based water-table reconstructions

Swindles, Graeme T.; Roland, Thomas P.; Amesbury, Matthew J.; Lamentowicz, Mariusz; McKeown, Michelle; Sim, Thomas G.; Fewster, Richard E.; Mitchell, Edward A. D.

doi:10.1016/j.ejop.2020.125693

Cited by 10 publications

(4 citation statements)

References 18 publications

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“…This taxon and the presence of abundant diatoms (which were observed during TA analysis but not subject of further study) suggest a fen environment (rather than an ombrotrophic bog), which is in agreement with the botanical data. Testate amoebae are often poorly preserved under fen-type conditions, possibly due to predation, physical disaggregation or chemical dissolution, or a combination of these (Roe et al, 2002;Swindles and Roe, 2007;Swindles et al, 2020).…”

Section: Palaeoenvironmentmentioning

confidence: 99%

Dating basal peat: The geochronology of peat initiation revisited

Quik

Palstra

Beek

et al. 2022

Quaternary Geochronology

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Section: Palaeoenvironmentmentioning

confidence: 99%

Dating basal peat: The geochronology of peat initiation revisited

Quik

Palstra

Beek

et al. 2022

Quaternary Geochronology

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“…Testate amoebae are widely used in bioindication ( Payne 2007 ) of water table depth and surface moisture in mires ( Zheng et al 2019 , Krashevska et al 2020 , Swindles et al 2020 , Qin et al 2021b , Šímová et al 2022 ), organic matter content ( Laggoun‐Défarge et al 2007 , Escobar et al 2008 , Daza et al 2020 ), macronutrients ( Wilkinson and Mitchell 2010 , Patterson et al 2012a ), acidity ( Payne 2009 , Lamentowicz et al 2011 , Patterson et al 2012b , Siver et al 2020 , Sim et al 2021 ), metal ions concentration ( Nguyen-Viet et al 2006 , Asada and Warner 2009 , Cockburn et al 2020 ) in aquatic environments, ecosystem restoration ( Carballeira and Pontevedra-Pombal 2021 , Qin et al 2021a , Evans et al 2023 , Creevy et al 2023 ) etc. Testate amoebae are successfully applied in quantitative reconstructions of hydrological regimes ( Lamentowicz et al 2017 , Tsyganov et al 2017 , Swindles et al 2019 , Zhang et al 2022 ), serving as a valuable proxy.…”

Section: Introductionmentioning

confidence: 99%

Biodiversity of testate amoebae in Sphagnum bogs: the dataset from forest-steppe ecotone (Middle Volga Territory, Russia)

Saldaeva,

Babeshko,

Chernyshov

et al. 2024

BDJ

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Testate amoebae are a polyphyletic group of unicellular eukaryotic organisms that are characterised by a rigid shell and inhabit mostly freshwater and terrestrial ecosystems. They are particularly abundant in peatlands, especially in Sphagnum-dominated biotopes. Peatland hydrology is the most important influence on testate amoebae communities. The good preservation of the shells in peat deposits and their response to hydrological regime changes are the principles for palaeohydrological reconstructions. Any changes in the water balance of mires should be expected to have far-reaching effects on biogeochemical cycles, productivity, carbon dioxide and methane exchange. This paper presents a dataset (Darwin Core Archive – DwC-A) on the distribution of Sphagnum-dwelling testate amoebae in nine mires located in the forest-steppe subzone of the East European Plane. The dataset includes information about 86 taxa belonging to 29 genera and contains 3,123 occurrences of 49,874 individuals. The following environmental variables are provided: microtopography, oxidising and reducing potential, total mineralisation, substrate temperature, acidity, substrate wetness and water table depth. These data might be used for biogeographical and palaeoecological studies, including quantitative reconstructions.

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“…According to Sládecek (1979), aquatic organisms can serve as indicators, therefore being possible to assess the water quality according to its presence, and in isolated cases, even in recognition of its absence. But testate amoebae have been used as bioindicators through other habitats, including peatlands and soils (Freitas et al, 2022;Tran, 2020;Swindles et al, 2020) e Online Library. Todos os artigos selecionados foram categorizados por cronologia, periódico de publicação, país, afiliação dos autores, se o estudo era empírico ou experimental, se incluía apenas amebas testáceas e aspectos do meio ambiente.…”

Section: Introductionmentioning

confidence: 99%

Testate amoebae (Amorphea, Amoebozoa, Cercozoa) as bioindicators: a scientometric review

et al. 2022

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Aim The free-living protists testate amoebae are recognized as being bioindicators, able to reveal environmental alteration via remodifying richness, diversity and abundance of species. To assess the scientific production on the use of testate amoebae as bioindicators, a scientometric analysis was undertaken from 1960 to 2020. Methods The sourcing of scientific articles derived from Google Academic, Scielo, Science Direct and Online Library research platforms. All selected papers were factored according to chronology, journal of publication, country, authors’ affiliation, whether the study was empirical or experimentation, if it included solely testate amoebae or other groups of organisms, and aspects of the environment. Results A total of 215 papers from ninety-two journals revealed a notable increase in publication numbers over the last decades. The two journals that most published data on this theme were Microbial Ecology and Ecological Indicators. Whilst the largest number of papers was published in the European Continent, the countries that most contributed to the subject were Canada in the temperate region and Brazil in the tropics. Edward A.D. Mitchell published the largest number of studies and regarding institutions the Franche-Comté University. The majority of papers that associated testaceans as bioindicators were empirical, conducted with Thecamoebian inhabiting moss and as such, dissociated from other groups. Conclusions Despite a suggested uptick in research of testaceans as bioindicators, our results indicate a concentration of studies to limited regions of the globe. In another aspect, a great number of studies assess testaceans’ community as-a-whole, showing a shortage of in-depth knowledge into species and functional groups. Therefore, our survey points to a wide variety of aquatic ecosystems devoid of study matter, indicating the need to foster the research on testate amoeba's role as bioindicators especially in the tropical regions.

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Quantifying the effect of testate amoeba decomposition on peat-based water-table reconstructions

Cited by 10 publications

References 18 publications

Dating basal peat: The geochronology of peat initiation revisited

Dating basal peat: The geochronology of peat initiation revisited

Biodiversity of testate amoebae in Sphagnum bogs: the dataset from forest-steppe ecotone (Middle Volga Territory, Russia)

Testate amoebae (Amorphea, Amoebozoa, Cercozoa) as bioindicators: a scientometric review

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