Siliceous microfossil succession in Lake Michigan
نویسندگان
چکیده
منابع مشابه
Siliceous microfossil succession in Lake Michigan
Quantitative analysis of siliceous microfossils in 210Pb-dated Lake Michigan sediments shows five time zones in microfossil abundance and composition. Sediments deposited before 1885 contain low abundances comprising species associated with very oligotrophic lakes. Between 1885 and 1925 abundance increases slowly as does the ratio of planktonic diatoms to benthic diatoms and chrysophyte remains...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 1990
ISSN: 0024-3590
DOI: 10.4319/lo.1990.35.4.0959