Monitoring submersed vegetation in a mesotrophic lake: correlation of two spatio-temporal scales of change

The submersed vegetation of mesotrophic, alkaline Chenango Lake in New York, USA, was monitored at two spatio-temporal scales: a 200 m 2 grid censused annually from 1978 to 1993 and again in 2001 (12,800 quadrats), and a 1.8 ha littoral zone sampled every 6–10 years (1978, 1984, 1991, and 2001; 3600...

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Bibliographic Details
Published in:Aquatic botany 2004-05, Vol.79 (1), p.33-50
Main Authors: Titus, John E, Grisé, David, Sullivan, Gary, Stephens, Mark D
Format: Article
Language:English
Subjects:
Chara vulgaris
Cyprinus carpio
Freshwater
Scale
Submersed macrophytes
Vallisneria americana
Vegetation dynamics
Vegetation sampling
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Summary:The submersed vegetation of mesotrophic, alkaline Chenango Lake in New York, USA, was monitored at two spatio-temporal scales: a 200 m 2 grid censused annually from 1978 to 1993 and again in 2001 (12,800 quadrats), and a 1.8 ha littoral zone sampled every 6–10 years (1978, 1984, 1991, and 2001; 3600 quadrats). The grid vegetation fluctuated rather erratically for the first 11 years with each of the dominant species showing a different pattern of change. Frequency values for Chara vulgaris were the most dynamic, while those for Vallisneria americana were the most stable. After 1989, grid vegetation declined, so that by 2001, only four of the original 11 species were present (including the original dominants), and the total number of observations declined to
ISSN:0304-3770
1879-1522
DOI:10.1016/j.aquabot.2003.11.006