Identifying environmental drivers of fungal non-pollen palynomorphs in the montane forest of the eastern Andean flank, Ecuador

Loughlin, Nicholas J.D.; Gosling, William D. and Montoya, Encarni (2018). Identifying environmental drivers of fungal non-pollen palynomorphs in the montane forest of the eastern Andean flank, Ecuador. Quaternary Research, 89(01) pp. 119–133.

DOI: https://doi.org/10.1017/qua.2017.73

Abstract

Samples taken from sedimentary archives indicate that fungal non-pollen palynomorphs (NPPs) can be used to provide information on forest cover, fire regime, and depositional environment in the eastern Andean flank montane forest of Ecuador. Within the 52 samples examined, 54 fungal NPP morphotypes are reported, of which 25 were found to be previously undescribed. Examination of fungal NPPs over a gradient of forest cover (2–64%) revealed three distinct assemblages: (1) low (<8%) forest cover Neurospora, IBB-16, HdV-201, OU-102, and OU-110 indicative of an open degraded landscape; (2) medium (8–32%) forest cover Cercophora-type 1, Xylariaceae, Rosellinia-type, Kretzschmaria deusta, Amphirosellinia, Sporormiella, and Glomus suggestive of a forested landscape disturbed by herbivores and soil erosion; and (3) high (32–63%) forest cover Anthostomella fuegiana, OU-5, OU-101, OU-108, and OU-120. Environmental variables for forest cover (forest pollen), available moisture (aquatic remains), regional fire regime (microcharcoal), and sediment composition (organic carbon) were found to explain ~40% of the variance in the fungal NPP data set. Fire was found to be the primary control on fungal NPP assemblage composition, with available moisture and sediment composition the next most important factors.

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About

  • Item ORO ID
  • 54596
  • Item Type
  • Journal Item
  • ISSN
  • 0033-5894
  • Project Funding Details
  • Funded Project NameProject IDFunding Body
    NERC DTG 2013 (RED Form SE-13-076-WG)NE/L501888/1NERC (Natural Environment Research Council)
    Evaluation of tropical forests sensitivity to past climate changes (SE-11-091-WG)NE/J018562/1NERC (Natural Environment Research Council)
    Radiocarbon Facility East KilbrideNRCF010001NERC
    Evaluation of tropical forests sensitivity to past climate changes (SE-11-091-WG)NE/J018562/1NERC (Natural Environment Research Council)
    OU-2011-DTG-Funding 3 Studentships (SE-11-052-AC)NE/J500288/1NERC (Natural Environment Research Council)
  • Keywords
  • Palaeoecology; Palaeoenvironment; Neotropics; Ecuador; Sample effect; Forest cover; Available moisture; Regional fire regime; Sediment composition; Depositional environment
  • Academic Unit or School
  • Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
    Faculty of Science, Technology, Engineering and Mathematics (STEM)
  • Copyright Holders
  • © 2017 University of Washington
  • Depositing User
  • ORO Import

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