Swindles, GT orcid.org/0000-0001-8039-1790, Kelly, TJ, Roucoux, KH et al. (1 more author) (2018) Response of testate amoebae to a late Holocene ecosystem shift in an Amazonian peatland. European Journal of Protistology, 64. pp. 13-19. ISSN 0932-4739
Abstract
To date there have only been two studies using testate amoebae as palaeoecological indicators in tropical peatlands. Here we present a new ∼500-year testate amoeba record from San Jorge, a domed peatland in Peruvian Amazonia, which has a well-constrained vegetation history based on pollen analysis. We observe a major shift from Hyalosphenia subflava to Cryptodifflugia oviformis-dominated communities at ∼50 cm depth (c. AD 1760), which suggests a change to drier conditions in the peatland. The application of a statistical transfer function also suggests a deepening of the water table at this time. The transition in the microbial assemblage occurs at a time when pollen and geochemical data indicate drier conditions (reduced influence of river flooding), leading to an ecosystem switch to more ombrotrophic-like conditions in the peatland. Our work illustrates the potential of testate amoebae as important tools in tropical peatland palaeoecology, and the power of multiproxy approaches for understanding the long-term development of tropical peatlands.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018, Elsevier GmbH. This is an author produced version of a paper published in European Journal of Protistology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Amazonia; Amazon rainforest; Palaeohydrology; Testate amoebae; Tropical peatlands |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) > Ecology & Global Change (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Mar 2018 10:13 |
Last Modified: | 15 Mar 2019 01:39 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ejop.2018.03.002 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:128856 |