Journal of Paleolimnology

, Volume 26, Issue 2, pp 147–159

Chironomid-based paleosalinity records in southern British Columbia, Canada: a comparison of transfer functions

  • Markus L. Henrichs
  • Ian R. Walker
  • Rolf W. Mathewes
Article

DOI: 10.1023/A:1011180810493

Cite this article as:
Henrichs, M.L., Walker, I.R. & Mathewes, R.W. Journal of Paleolimnology (2001) 26: 147. doi:10.1023/A:1011180810493

Abstract

Chironomid remains from Big Lake, British Columbia were analysed and paleosalinities were estimated using a pre-existing transfer function and several developed using new regression methods. A two component partial-least-squares model (PLS-2) had the highest coefficient of determination (R2(Jackknifed) = 0.75) and lowest root-mean-squared error-of-prediction (RMSEP). As compared to the pre-existing model, it was also less sensitive to the influence of rare taxa. Nevertheless, the marginally larger R2(Jackknifed) and lower RMSEP do not clearly identify a single best model. The models were applied to Big, Mahoney and Kilpoola lakes, revealing the sensitivity of paleosalinity inferences to model selection. A synopsis of chironomid-based paleosalinities in British Columbia and their correspondence with other paleoclimatic data are presented and discussed.

Chironomid salinity transfer function paleosalinity climate Holocene British Columbia 

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Markus L. Henrichs
    • 1
    • 2
    • 3
  • Ian R. Walker
    • 1
    • 2
  • Rolf W. Mathewes
    • 2
  1. 1.Biology DepartmentOkanagan University CollegeKelownaCanada
  2. 2.Department of Biological SciencesSimon Fraser UniversityBurnabyCanada
  3. 3.Climate Impacts Research CentreAbiskoSweden

Personalised recommendations