Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Algal Dynamics and Tropohic Interactions in the Recent History of Frains Lake, Michigan

Heath Joseph Carney
Ecology
Vol. 63, No. 6 (Dec., 1982), pp. 1814-1826
Published by: Wiley
DOI: 10.2307/1940123
Stable URL: http://www.jstor.org/stable/1940123
Page Count: 13
  • Download ($42.00)
  • Subscribe ($19.50)
  • Cite this Item
Algal Dynamics and Tropohic Interactions in the Recent History of Frains Lake, Michigan
Preview not available

Abstract

Analysis of a 10-m sediment core taken from the center of Frains Lake, Michigan, reveals distinct changes in diatom and chrysophycean cyst assemblages following European settlement @?1830 AD. The presettlement planktonic diatom flora was dominated by Cyclotella species. The postsettlement flora was dominated first by eurytopic taxa, including Melosira granulata, Fragilaria construens, and F. crotonesis, and then by a complex of small Stephanodiscus species, particularly S. hantzschii. Cluster analysis and principal component analysis indicate three major stages in the recent development of Frains Lake, the greatest shift in the diatom assemblage occurring with settlement. Diatom succession bears a striking resemblance to patterns in other North American and European lakes. Stockner's A/C (Araphidineae/Centrales) ratios does not adequately indicate recent changes in the trophic status of Frains Lake. The recent succession of diatoms does agree with predictions based on the Si:P ratio and resource-based theory. Kerfoot's hypothesis that an increase in planktivorous fish caused a shift in postsettlement zooplankton composition is evaluated on the basis of algal microfossil data. I propose that shifts in the algal assemblage and other resources have influenced zooplankton community structure.

Page Thumbnails

  • Thumbnail: Page 
[1814]
    [1814]
  • Thumbnail: Page 
1815
    1815
  • Thumbnail: Page 
1816
    1816
  • Thumbnail: Page 
1817
    1817
  • Thumbnail: Page 
1818
    1818
  • Thumbnail: Page 
1819
    1819
  • Thumbnail: Page 
1820
    1820
  • Thumbnail: Page 
1821
    1821
  • Thumbnail: Page 
1822
    1822
  • Thumbnail: Page 
1823
    1823
  • Thumbnail: Page 
1824
    1824
  • Thumbnail: Page 
1825
    1825
  • Thumbnail: Page 
1826
    1826