Subfossil chironomid variability in surface sediment samples from Icelandic lakes: implications for the development and use of training sets |
| |
| Authors: | Naomi Holmes Peter G Langdon Chris J Caseldine |
| |
| Institution: | (1) Department of Geography, University of Exeter in Cornwall, Treliever Road, Penryn, Cornwall, TR10 9EZ, UK;(2) Palaeoecology Laboratory, School of Geography, University of Southampton, Highfield, Southampton, SO17 1BJ, UK |
| |
| Abstract: | A suite of surface sediment samples from three Icelandic lakes was analysed for subfossil chironomid head capsules, and a
quantitative July air temperature inference model was applied to the data to investigate whether there was significant variability
among samples taken from a lake. Ordination and simple regression methods were used to analyse the relationships between environmental
and sedimentological variables and the chironomid assemblages and inferred temperature data. Substrate was the most important
influence on the chironomid assemblages and inferred temperatures, while water depth at the sampling location had no relationship
with the chironomid-inferred temperatures. Within-lake variability of the chironomid assemblages and their inferred temperatures,
however, were not significant statistically, suggesting that in lakes of western and northwest Iceland within-lake sampling
location has no effect on the data obtained, and therefore on training set samples. |
| |
| Keywords: | Subfossil chironomid Iceland Palaeolimnology Temperature reconstruction Within-lake variability |
| 本文献已被 SpringerLink 等数据库收录！ |
|
