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Paleolimnological comparison of the Laurentian Great Lakes based on diatoms
Author(s) -
Stoermer E. F.,
WoZin J. A.,
Schelske C. L.
Publication year - 1993
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1993.38.6.1311
Subject(s) - paleolimnology , ordination , diatom , ecological succession , physical geography , cluster (spacecraft) , geography , oceanography , environmental science , geology , ecology , biology , computer science , programming language
We used cluster analysis to compare records of diatom succession recorded in dated cores from offshore basins of the five Great Lakes. Most recently deposited samples from Lakes Erie and Ontario are far removed from the cluster centroid, as are samples deposited in Lakes Huron and Michigan during forest clearance. Most recently deposited samples from Lake Superior are also clearly segregated, but occupy the opposite end of the ordination. At a lower level, samples clustered by lake and time. For each lake, sample clusters from presettlement, early industrialization, and postindustrialization were identified. Relationships of cluster structure allow inferences concerning the comparative state of the lakes at different periods in their history.