Successional change of testate amoeba assemblages along a space-for-time sequence of peatland development

Hui Zhang, Minna Väliranta, Matthew J. Amesbury, D. J. Charman, Anna Laine, Eeva-Stiina Tuittila

Research output: Contribution to journalArticleScientificpeer-review

Abstract

It is well established that in ombrotrophic bogs, water-table depth (WTD) is the primary environmental control on testate amoeba distribution. However, the environmental controls on testate amoebae in minerotrophic fens are less well known and successional change in their assemblages associated with fen-bog peatland development has been scarcely investigated. Here we investigate a peatland space-for-time sequence resulting from postglacial rebound on the west coast of Finland, to assess successional patterns in testate amoeba communities and their relationships with environmental variables during peatland development. Sample sites along a 10-km transect from coast to inland ranged from a recently emerged wet meadow to a mature bog. Environmental variables (e.g., peat thickness, carbon and nitrogen content, pH, WTD and vegetation) were measured alongside testate amoeba samples. Results showed that even though the distribution of testate amoebae was to some extent determined by the succession stage, many taxa had wide WTD and pH ranges. The primary environmental control for many taxa changed along the succession. In conclusion, the ecological constraints on testate amoebae in minerotrophic systems are more complex than in bogs. The detected patterns also complicate the use of testate amoebae as a primary proxy in palaeoecological reconstructions where fen-to-bog shifts occur. (C) 2018 Elsevier GmbH. All rights reserved.

Original languageEnglish
JournalEuropean Journal of Protistology
Volume66
Pages (from-to)36-47
Number of pages12
ISSN0932-4739
DOIs
Publication statusPublished - Oct 2018
MoE publication typeA1 Journal article-refereed

Fields of Science

  • Ecological constraints
  • Fen environment
  • Peatland succession
  • Testate amoebae
  • SPHAGNUM-DOMINATED PEATLANDS
  • FEN-BOG TRANSITION
  • PALEOHYDROLOGICAL RECONSTRUCTION
  • VERTICAL MICRODISTRIBUTION
  • TESTACEANS PROTOZOA
  • SOUTHERN FINLAND
  • REPLICATE CORES
  • WATER TABLES
  • RAISED BOGS
  • MULTI-PROXY
  • 1181 Ecology, evolutionary biology

Cite this

Zhang, Hui ; Väliranta, Minna ; Amesbury, Matthew J. ; Charman, D. J. ; Laine, Anna ; Tuittila, Eeva-Stiina. / Successional change of testate amoeba assemblages along a space-for-time sequence of peatland development. In: European Journal of Protistology. 2018 ; Vol. 66. pp. 36-47.
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abstract = "It is well established that in ombrotrophic bogs, water-table depth (WTD) is the primary environmental control on testate amoeba distribution. However, the environmental controls on testate amoebae in minerotrophic fens are less well known and successional change in their assemblages associated with fen-bog peatland development has been scarcely investigated. Here we investigate a peatland space-for-time sequence resulting from postglacial rebound on the west coast of Finland, to assess successional patterns in testate amoeba communities and their relationships with environmental variables during peatland development. Sample sites along a 10-km transect from coast to inland ranged from a recently emerged wet meadow to a mature bog. Environmental variables (e.g., peat thickness, carbon and nitrogen content, pH, WTD and vegetation) were measured alongside testate amoeba samples. Results showed that even though the distribution of testate amoebae was to some extent determined by the succession stage, many taxa had wide WTD and pH ranges. The primary environmental control for many taxa changed along the succession. In conclusion, the ecological constraints on testate amoebae in minerotrophic systems are more complex than in bogs. The detected patterns also complicate the use of testate amoebae as a primary proxy in palaeoecological reconstructions where fen-to-bog shifts occur. (C) 2018 Elsevier GmbH. All rights reserved.",
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author = "Hui Zhang and Minna V{\"a}liranta and Amesbury, {Matthew J.} and Charman, {D. J.} and Anna Laine and Eeva-Stiina Tuittila",
year = "2018",
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Successional change of testate amoeba assemblages along a space-for-time sequence of peatland development. / Zhang, Hui; Väliranta, Minna; Amesbury, Matthew J.; Charman, D. J.; Laine, Anna; Tuittila, Eeva-Stiina.

In: European Journal of Protistology, Vol. 66, 10.2018, p. 36-47.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Successional change of testate amoeba assemblages along a space-for-time sequence of peatland development

AU - Zhang, Hui

AU - Väliranta, Minna

AU - Amesbury, Matthew J.

AU - Charman, D. J.

AU - Laine, Anna

AU - Tuittila, Eeva-Stiina

PY - 2018/10

Y1 - 2018/10

N2 - It is well established that in ombrotrophic bogs, water-table depth (WTD) is the primary environmental control on testate amoeba distribution. However, the environmental controls on testate amoebae in minerotrophic fens are less well known and successional change in their assemblages associated with fen-bog peatland development has been scarcely investigated. Here we investigate a peatland space-for-time sequence resulting from postglacial rebound on the west coast of Finland, to assess successional patterns in testate amoeba communities and their relationships with environmental variables during peatland development. Sample sites along a 10-km transect from coast to inland ranged from a recently emerged wet meadow to a mature bog. Environmental variables (e.g., peat thickness, carbon and nitrogen content, pH, WTD and vegetation) were measured alongside testate amoeba samples. Results showed that even though the distribution of testate amoebae was to some extent determined by the succession stage, many taxa had wide WTD and pH ranges. The primary environmental control for many taxa changed along the succession. In conclusion, the ecological constraints on testate amoebae in minerotrophic systems are more complex than in bogs. The detected patterns also complicate the use of testate amoebae as a primary proxy in palaeoecological reconstructions where fen-to-bog shifts occur. (C) 2018 Elsevier GmbH. All rights reserved.

AB - It is well established that in ombrotrophic bogs, water-table depth (WTD) is the primary environmental control on testate amoeba distribution. However, the environmental controls on testate amoebae in minerotrophic fens are less well known and successional change in their assemblages associated with fen-bog peatland development has been scarcely investigated. Here we investigate a peatland space-for-time sequence resulting from postglacial rebound on the west coast of Finland, to assess successional patterns in testate amoeba communities and their relationships with environmental variables during peatland development. Sample sites along a 10-km transect from coast to inland ranged from a recently emerged wet meadow to a mature bog. Environmental variables (e.g., peat thickness, carbon and nitrogen content, pH, WTD and vegetation) were measured alongside testate amoeba samples. Results showed that even though the distribution of testate amoebae was to some extent determined by the succession stage, many taxa had wide WTD and pH ranges. The primary environmental control for many taxa changed along the succession. In conclusion, the ecological constraints on testate amoebae in minerotrophic systems are more complex than in bogs. The detected patterns also complicate the use of testate amoebae as a primary proxy in palaeoecological reconstructions where fen-to-bog shifts occur. (C) 2018 Elsevier GmbH. All rights reserved.

KW - Ecological constraints

KW - Fen environment

KW - Peatland succession

KW - Testate amoebae

KW - SPHAGNUM-DOMINATED PEATLANDS

KW - FEN-BOG TRANSITION

KW - PALEOHYDROLOGICAL RECONSTRUCTION

KW - VERTICAL MICRODISTRIBUTION

KW - TESTACEANS PROTOZOA

KW - SOUTHERN FINLAND

KW - REPLICATE CORES

KW - WATER TABLES

KW - RAISED BOGS

KW - MULTI-PROXY

KW - 1181 Ecology, evolutionary biology

U2 - 10.1016/j.ejop.2018.07.003

DO - 10.1016/j.ejop.2018.07.003

M3 - Article

VL - 66

SP - 36

EP - 47

JO - European Journal of Protistology

JF - European Journal of Protistology

SN - 0932-4739

ER -