Chironomids, temperature and numerical models: a reply to Seppälä
We reply to comments by Seppälä (2001) concerning the suitability of the surface-water temperature measurements and mean July air temperature estimates used by Olanderet al. (1999) to derive quantitative chironomid-temperature transfer functions. We use new data for water temperatures based on two-h...
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Online Access: | https://hdl.handle.net/1956/2503 https://doi.org/10.1177/095968360101100513 |
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ftunivbergen:oai:bora.uib.no:1956/2503 2023-05-15T16:12:02+02:00 Chironomids, temperature and numerical models: a reply to Seppälä Korhola, Atte Birks, Harry John Betteley Olander, Heikki Blom, Tom 2001 application/pdf https://hdl.handle.net/1956/2503 https://doi.org/10.1177/095968360101100513 eng eng SAGE urn:issn:0959-6836 https://hdl.handle.net/1956/2503 https://doi.org/10.1177/095968360101100513 Chironomidae Calibration modelling Transfer functions Summer temperature Palaeotemperatures Field measurements Northern Fennoscandia VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed Journal article 2001 ftunivbergen https://doi.org/10.1177/095968360101100513 2023-03-14T17:42:45Z We reply to comments by Seppälä (2001) concerning the suitability of the surface-water temperature measurements and mean July air temperature estimates used by Olanderet 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 Olanderet 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. Article in Journal/Newspaper Fennoscandia University of Bergen: Bergen Open Research Archive (BORA-UiB) The Holocene 11 5 615 622 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Chironomidae Calibration modelling Transfer functions Summer temperature Palaeotemperatures Field measurements Northern Fennoscandia VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
Chironomidae Calibration modelling Transfer functions Summer temperature Palaeotemperatures Field measurements Northern Fennoscandia VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Korhola, Atte Birks, Harry John Betteley Olander, Heikki Blom, Tom Chironomids, temperature and numerical models: a reply to Seppälä |
topic_facet |
Chironomidae Calibration modelling Transfer functions Summer temperature Palaeotemperatures Field measurements Northern Fennoscandia VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
We reply to comments by Seppälä (2001) concerning the suitability of the surface-water temperature measurements and mean July air temperature estimates used by Olanderet 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 Olanderet 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. |
format |
Article in Journal/Newspaper |
author |
Korhola, Atte Birks, Harry John Betteley Olander, Heikki Blom, Tom |
author_facet |
Korhola, Atte Birks, Harry John Betteley Olander, Heikki Blom, Tom |
author_sort |
Korhola, Atte |
title |
Chironomids, temperature and numerical models: a reply to Seppälä |
title_short |
Chironomids, temperature and numerical models: a reply to Seppälä |
title_full |
Chironomids, temperature and numerical models: a reply to Seppälä |
title_fullStr |
Chironomids, temperature and numerical models: a reply to Seppälä |
title_full_unstemmed |
Chironomids, temperature and numerical models: a reply to Seppälä |
title_sort |
chironomids, temperature and numerical models: a reply to seppälä |
publisher |
SAGE |
publishDate |
2001 |
url |
https://hdl.handle.net/1956/2503 https://doi.org/10.1177/095968360101100513 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
urn:issn:0959-6836 https://hdl.handle.net/1956/2503 https://doi.org/10.1177/095968360101100513 |
op_doi |
https://doi.org/10.1177/095968360101100513 |
container_title |
The Holocene |
container_volume |
11 |
container_issue |
5 |
container_start_page |
615 |
op_container_end_page |
622 |
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1765997261388513280 |