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| RECONSTRUCTION OF PAST CHANGES IN SALINITY AND CLIMATE USING A DIATOM-BASED TRANSFER-FUNCTION |
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| Author(s): FRITZ SC, JUGGINS S, BATTARBEE RW, ENGSTROM DR |
| Source: NATURE Volume: 352 Issue: 6337 Pages: 706-708 Published: AUG 22 1991 |
| Times Cited: 161 References: 18 |
| Abstract: THE prospect of global warming has focused attention on the role of palaeoecology in testing the accuracy and sensitivity of climate-model predictions, in identifying past analogues for future climate change, and in placing model-predicted climate responses in the context of natural climate variability 1,2. Proxy data for climate reconstruction can be derived from many sources, including the palaeolimnological record 3,4. In closed-basin lakes in arid and semi-arid regions, shifts in effective moisture lead to the concentration or dilution of dissolved salts, and these changes in salinity are clearly reflected in the composition of lacustrine diatom assemblages 5-8. Here we refine a previously published 9 diatom-based transfer function for the reconstruction of past changes in salinity of lakes in the northern Great Plains region of North America, and apply the refined transfer function to a late-glacial and Holocene sediment record from Devils Lake, North Dakota. Our results show that there were a number of alternations between fresh and saline conditions during the Holocene and hence demonstrate the utility of the technique in reconstructing past changes in regional climate. |
| Document Type: Article |
| Language: English |
| Reprint Address: FRITZ, SC (reprint author), UNIV MINNESOTA, LIMNOL RES CTR, 310 PILLSBURY DR SE, MINNEAPOLIS, MN 55455 USA |
Addresses:
1. UCL, ENVIRONM CHANGE RES CTR, DEPT GEOG, LONDON WC1H 0AP, ENGLAND |
| Publisher: MACMILLAN MAGAZINES LTD, 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: GC064 |
| ISSN: 0028-0836 |
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