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Chironomids, temperature and numerical models

A reply to Seppälä

Bibliographic Data

ID12266936
AuthorsAtte Korhola (0000-0003-2577-6502, University of Helsinki, corresponding author), H J B Birks (0000-0002-5891-9859, Botanical Institute, University of Bergen, Allégaten 41, N-5007 Bergen, Norway, and Environmental Change Research Centre, University College London, 26 Bedford Way, London WC1H 0AP, UK), Heikki Olander (Geological Survey of Finland), T Blom (0000-0003-1861-4599, Department of Geography, PO Box 64, FIN-00014 University of Helsinki, Finland)
Year2001
Volume11
Issue5
Pages615-622
Publication date2001-07-01
Open AccessYes
TypeARTICLE
VenueThe Holocene (JOURNAL)
Journal identifiersISSN: 0959-6836 • E-ISSN: 1477-0911
PublisherSAGE Publishing (PUBLISHER • US)
DOI10.1177/095968360101100513
OpenAlexW2069716748
LanguageEN
Citations received3
References cited44

We reply to comments by Seppälä (2001) concerning the suitability of the surface-water temperature measurements and mean July air temperature estimates used by Olander et al. (1999) to derive quantitative chironomid-temperature transfer functions. We use new data for water temperatures based on two-hourly recordings from thermistors installed in 32 lakes and air-temperature data from an automatic weather station at one lake to refute Seppälä’s accusations that our field data are unsatisfactory. We also respond to Seppälä’s suggestions about factors influencing chironomid distribution and abundance and suggest that there is a serious confusion of temporal and spatial scales between Seppälä’s ideas and the Olander et al. study. We attempt to explain the underlying logic behind empirical transfer functions that form a major part of Holocene quantitative environmental reconstructions and the major assumptions behind such transfer functions as Seppälä appears not to understand the basis or the assumptions of such widely used numerical models in palaeolimnology. We respond to Seppälä’s comments that lakewater pH and distance beyond tree-line have been inadequately measured and answer his erroneous understanding that a helicopter was used to facilitate lake sampling. We briefly consider Seppälä’s suggestion that a helicopter can totally mix the surface water of a lake for many hours

Air temperature · Climatology · Confusion · Field (mathematics · Geography · Hydrology (agriculture · Meteorology · Sampling (signal processing · Computer Science · Environmental Science · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Mathematics · Tree-ring climate responses · Geology

  • A chironomid-based reconstruction of summer temperatures in NW Iceland since AD 1650

    Open Access•Peter G Langdon, Chris Caseldine et al.•Quaternary Research•2011

  • Revealing the Emperor's new clothes

    Open Access•Lisa R Belyea•The Holocene•2007

  • John Birks

    Open Access•Richard W Battarbee, Henry Lamb et al.•The Holocene•2014

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    Open Access•Ian R Walker, Rolf W Mathewes•Quaternary Research•1987

  • A Quantitative Holocene Climatic Record from Diatoms in Northern Fennoscandia

    Open Access•Atte Korhola, Jan Weckström et al.•Quaternary Research•2000

  • Aquatic Invertebrates as Paleoclimatic Indicators?

    Open Access•Barry G Warner, Brenda J Hann•Quaternary Research•1987

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  • An expanded calibration model for inferring lakewater and air temperatures from fossil chironomid assemblages in northern Fennoscandia

    Open Access•Heikki Olander, H J B Birks et al.•The Holocene•1999

  • Unsatisfactory field data in a calibration model for inferring past temperatures from chironomid assemblages in northern Fennoscandia

    Open Access•MATTI SEPPÄLÄ•The Holocene•2001

Citations per year0.16
Citation span2007 - 2014 (8)
Highly citedNo

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