The construction of a diatom-based chlorophyll a transfer function and its application at three lakes on Signy Island (maritime Antarctic) subject to differing degrees of nutrient enrichment

被引:116
作者
Jones, VJ [1 ]
Juggins, S [1 ]
机构
[1] UNIV NEWCASTLE UPON TYNE, DEPT GEOG, NEWCASTLE UPON TYNE NE1 7RU, TYNE & WEAR, ENGLAND
关键词
D O I
10.1111/j.1365-2427.1995.tb00901.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
1. Canonical correspondence analysis of a diatom and water chemistry dataset from fifty-nine maritime Antarctic lakes situated on Signy and Livingston Islands showed that nutrients and functions of nutrients (NH4+, chlorophyll a) accounted for a significant fraction of the variance in the diatom data. 2. Weighted averaging regression was used to construct a diatom-based transfer function for inferring chlorophyll a concentrations from sediment core diatom assemblages. 3. The transfer function was applied to Pb-210-dated sediment cores from three lakes (Moss, Sombre and Heywood) receiving different levels of nutrient input from fur seal populations, i.e, low, medium and high, respectively. 4. Moss Lake showed relatively stable reconstructed chlorophyll a values, and no evidence of recent eutrophication, agreeing with measured chlorophyll a concentrations at the site. 5. Changes in diatom assemblages and results of chlorophyll a reconstructions at Sombre Lake suggested that nutrient enrichment had occurred, which could be clearly linked to fluctuations in the measured water chemistry over the last 10-14 years. 6. Despite recorded increases in recent nutrient inputs there was no apparent diatom response at Heywood Lake.
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收藏
页码:433 / 445
页数:13
相关论文
共 60 条
[2]   RECENT PALEOLIMNOLOGY OF 3 SHALLOW DANISH LAKES [J].
ANDERSON, NJ ;
ODGAARD, BV .
HYDROBIOLOGIA, 1994, 275 :411-422
[3]   A COMPARISON OF SEDIMENTARY AND DIATOM-INFERRED PHOSPHORUS PROFILES - IMPLICATIONS FOR DEFINING PREDISTURBANCE NUTRIENT CONDITIONS [J].
ANDERSON, NJ ;
RIPPEY, B ;
GIBSON, CE .
HYDROBIOLOGIA, 1993, 253 (1-3) :357-366
[4]  
[Anonymous], 1986, HDB HOLOCENE PALAEOE
[5]   RADIOMETRIC DATING OF LAKE-SEDIMENTS FROM SIGNY ISLAND (MARITIME ANTARCTIC) - EVIDENCE OF RECENT CLIMATIC-CHANGE [J].
APPLEBY, PG ;
JONES, VJ ;
ELLISEVANS, JC .
JOURNAL OF PALEOLIMNOLOGY, 1995, 13 (02) :179-191
[6]  
BAKER ALAN N., 1967, N Z J BOT, V5, P453
[7]  
BARTLEIN PJ, 1993, ELK LAKE MINNESOTA E, P275
[8]  
BATTARBEE RW, 1991, QUATERNARY LANDSCAPE, P129
[10]   DIATOMS AND PH RECONSTRUCTION [J].
BIRKS, HJB ;
LINE, JM ;
JUGGINS, S ;
STEVENSON, AC ;
TERBRAAK, CJF .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 1990, 327 (1240) :263-278