Ecology of testate amoebae along an environmental gradient from
bogs to calcareous fens in East-Central Europe: development of
transfer functions for palaeoenvironmental reconstructions

J 2022

Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions

ŠÍMOVÁ, Anna, Martin JIROUŠEK, Patrícia SINGH, Petra HÁJKOVÁ, Michal HÁJEK et. al.

Basic information

Original name

Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions

Authors

ŠÍMOVÁ, Anna (203 Czech Republic, guarantor, belonging to the institution), Martin JIROUŠEK (203 Czech Republic, belonging to the institution), Patrícia SINGH (703 Slovakia, belonging to the institution), Petra HÁJKOVÁ (203 Czech Republic, belonging to the institution) and Michal HÁJEK (203 Czech Republic, belonging to the institution)

Edition

Palaeogeography, Palaeoclimatology, Palaeoecology, Netherlands, Elsevier, 2022, 0031-0182

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10618 Ecology

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 3.000

RIV identification code

RIV/00216224:14310/22:00126379

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.palaeo.2022.111145

UT WoS

000842837800001

Keywords in English

Protist; Peatland; Poor–rich gradient; Trophic gradient; Water table; Europe

Abstract

V originále

Testate amoebae play an important role in biomonitoring and the understanding of peatland (palaeo)ecology. However, their application has been mainly limited to Sphagnum-dominated peatlands, especially ombrotrophic bogs. To facilitate wider use of these microorganisms, we explored their ecology along a gradient from mineral-poor acidic bogs to mineral-rich calcareous fens with tufa formation using a new calibration dataset of over 250 samples from East-Central Europe. Specifically, we examined environmental controls on testate amoebae along the complete gradient and separately in the minerotrophic (pH >5.5) and ombrotrophic (pH <5) parts. Based on these findings, we developed and statistically evaluated transfer function models for the dominant factors controlling the community composition of these protists. Multivariate statistical analysis showed that groundwater pH was the main driver of species composition in the full and minerotrophic datasets. In contrast, testate amoeba communities in the ombrotrophic dataset were primarily structured by depth to water table (DWT). Under leave-one-out cross-validation (LOO), the best-performing model for DWT gave a prediction error (RMSEP) of 5.43 cm. The most robust models for groundwater mineral richness yielded RMSEPLOO of 0.45 and 0.27 pH units, for the full and the minerotrophic dataset respectively. This is the first study to present a complete set of testate amoeba-based transfer functions that allow reconstructions of Holocene hydrochemical and hydrological (hydroclimatic) variability in different mire types within one region. The new models open up the possibility for testate amoebae to become a valuable tool in palaeoecological research, although further work is needed to fully assess their performance and usefulness in practice.

Links

GX19-28491X, research and development project

Name: Centrum pro evropské vegetační syntézy (CEVS) (Acronym: CEVS)

Investor: Czech Science Foundation

Citovat

ŠÍMOVÁ, Anna, Martin JIROUŠEK, Patrícia SINGH, Petra HÁJKOVÁ and Michal HÁJEK. Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions. Palaeogeography, Palaeoclimatology, Palaeoecology. Netherlands: Elsevier, 2022, vol. 601, September, p. "111145", 17 pp. ISSN 0031-0182. Available from: https://dx.doi.org/10.1016/j.palaeo.2022.111145.

@article{1883618,
   author = {Šímová, Anna and Jiroušek, Martin and Singh, Patrícia and Hájková, Petra and Hájek, Michal},
   article_location = {Netherlands},
   article_number = {September},
   doi = {http://dx.doi.org/10.1016/j.palaeo.2022.111145},
   keywords = {Protist; Peatland; Poor–rich gradient; Trophic gradient; Water table; Europe},
   language = {eng},
   issn = {0031-0182},
   journal = {Palaeogeography, Palaeoclimatology, Palaeoecology},
   title = {Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions},
   url = {https://doi.org/10.1016/j.palaeo.2022.111145},
   volume = {601},
   year = {2022}
}

TY  - JOUR
ID  - 1883618
AU  - Šímová, Anna - Jiroušek, Martin - Singh, Patrícia - Hájková, Petra - Hájek, Michal
PY  - 2022
TI  - Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions
JF  - Palaeogeography, Palaeoclimatology, Palaeoecology
VL  - 601
IS  - September
SP  - "111145"
EP  - "111145"
PB  - Elsevier
SN  - 00310182
KW  - Protist
KW  - Peatland
KW  - Poor–rich gradient
KW  - Trophic gradient
KW  - Water table
KW  - Europe
UR  - https://doi.org/10.1016/j.palaeo.2022.111145
N2  - Testate amoebae play an important role in biomonitoring and the understanding of peatland (palaeo)ecology. However, their application has been mainly limited to Sphagnum-dominated peatlands, especially ombrotrophic bogs. To facilitate wider use of these microorganisms, we explored their ecology along a gradient from mineral-poor acidic bogs to mineral-rich calcareous fens with tufa formation using a new calibration dataset of over 250 samples from East-Central Europe. Specifically, we examined environmental controls on testate amoebae along the complete gradient and separately in the minerotrophic (pH >5.5) and ombrotrophic (pH <5) parts. Based on these findings, we developed and statistically evaluated transfer function models for the dominant factors controlling the community composition of these protists. Multivariate statistical analysis showed that groundwater pH was the main driver of species composition in the full and minerotrophic datasets. In contrast, testate amoeba communities in the ombrotrophic dataset were primarily structured by depth to water table (DWT). Under leave-one-out cross-validation (LOO), the best-performing model for DWT gave a prediction error (RMSEP) of 5.43 cm. The most robust models for groundwater mineral richness yielded RMSEPLOO of 0.45 and 0.27 pH units, for the full and the minerotrophic dataset respectively. This is the first study to present a complete set of testate amoeba-based transfer functions that allow reconstructions of Holocene hydrochemical and hydrological (hydroclimatic) variability in different mire types within one region. The new models open up the possibility for testate amoebae to become a valuable tool in palaeoecological research, although further work is needed to fully assess their performance and usefulness in practice.
ER  -

ŠÍMOVÁ, Anna, Martin JIROUŠEK, Patrícia SINGH, Petra HÁJKOVÁ and Michal HÁJEK. Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions. \textit{Palaeogeography, Palaeoclimatology, Palaeoecology}. Netherlands: Elsevier, 2022, vol.~601, September, p.~''111145'', 17 pp. ISSN~0031-0182. Available from: https://dx.doi.org/10.1016/j.palaeo.2022.111145.

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