WALKER, IR; SMOL, JP; ENGSTROM, DR; BIRKS, HJB; (1991) AN ASSESSMENT OF CHIRONOMIDAE AS QUANTITATIVE INDICATORS OF PAST CLIMATIC-CHANGE. CAN J FISH AQUAT SCI , 48 (6) 975 - 987.
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The distribution among Labrador (Canada) lakes of remains from 21 chironomid taxa was analysed by means of canonical correspondence analysis (CCA). Tests with partial CCA of three hypotheses revealed that the distributions of chironomid taxa were significantly correlated with summer surface-water temperature and maximum lake depth, but not sediment organic content. In addition, an exploratory CCA revealed possible relationships of chironomid fauna with residual longitude and Fe concentration. A weighted-averaging-regression/calibration model of the chironomid-temperature relationship (derived from a temperature-constrained CCA) allowed the summer surface-water temperature of lakes to be inferred from chironomid remains. Accurate quantitative reconstructions of late glacial and Holocene temperature variations should be possible from fossil Chironomidae.
|Title:||AN ASSESSMENT OF CHIRONOMIDAE AS QUANTITATIVE INDICATORS OF PAST CLIMATIC-CHANGE|
|Keywords:||CANONICAL CORRESPONDENCE-ANALYSIS, BRITISH-COLUMBIA, MACROINVERTEBRATE COMMUNITIES, ENVIRONMENTAL VARIABLES, CHYDORID CLADOCERA, PH RECONSTRUCTION, LAKE-SEDIMENTS, NORTH-AMERICA, MARION LAKE, VEGETATION|
|UCL classification:||UCL > School of Arts and Social Sciences > Faculty of Social and Historical Sciences > Geography|
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