Lancaster EPrints

Vertical zonation of testate amoebae in the Elatia Mires, northern Greece : palaeoecological evidence for a wetland response to recent climate change or autogenic processes?

Payne, Richard J. and Pates, Jackie M. (2009) Vertical zonation of testate amoebae in the Elatia Mires, northern Greece : palaeoecological evidence for a wetland response to recent climate change or autogenic processes? Wetlands Ecology and Management, 17 (4). pp. 355-364. ISSN 0923-4861

[img]
Preview
PDF (Greecepalaeo_after_review.pdf)
Download (141Kb) | Preview

    Abstract

    The Elatia Mires of northern Greece are unique ecosystems of high conservation value. The mires are climatically marginal and may be sensitive to changing hydroclimate, while northern Greece has experienced a significant increase in aridity since the late twentieth century. To investigate the impact of recent climatic change on the hydrology of the mires, the palaeoecological record was investigated from three near-surface monoliths extracted from two sites. Testate amoebae were analysed as sensitive indicators of hydrology. Results were interpreted using transfer function models to provide quantitative reconstructions of changing water table depth and pH. AMS radiocarbon dates and 210Pb suggest the peats were deposited within the last c. 50 years, but do not allow a secure chronology to be established. Results from all three profiles show a distinct shift towards a more xerophilic community particularly noted by increases in Euglypha species. Transfer function results infer a distinct lowering of water tables in this period. A hydrological response to recent climate change is a tenable hypothesis to explain this change; however other possible explanations include selective test decay, vertical zonation of living amoebae, ombrotrophication and local hydrological change. It is suggested that a peatland response to climatic change is the most probable hypothesis, showing the sensitivity of marginal peatlands to recent climatic change.

    Item Type: Article
    Journal or Publication Title: Wetlands Ecology and Management
    Additional Information: The original publication is available at www.springerlink.com
    Uncontrolled Keywords: Mires ; Peatlands ; Climate change ; Testate amoebae ; Palaeohydrology
    Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
    Departments:
    ID Code: 30741
    Deposited By: Dr Jackie Pates
    Deposited On: 03 Dec 2009 09:33
    Refereed?: Yes
    Published?: Published
    Last Modified: 23 Jul 2014 14:50
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/30741

    Actions (login required)

    View Item