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On the changes in the structure of two algal populations: species diversity and stability

✍ Scribed by F. Symons

Publisher
Springer
Year
1972
Tongue
English
Weight
140 KB
Volume
40
Category
Article
ISSN
1573-5141

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✦ Synopsis

Two assumptions were made: 1. when comparing two sample places in the same pond, the one taken nearer to the water edge will show a more diversified populations structure. 2. The population taken nearer to the water edge having a more diversified population structure will be more self-regulatory than the one taken from the open water.

For each of those two assumptions a quantitative measure was proposed. The calculated coefficients did seem to confirm the assumptions.

THE DATA Two algal populations sampled in the same pond are compared. A survey of the original observations has already been given in a previous paper (SYMONS, 1970): cell numbers found for each of 21 species in 16 collections (fortnightly herborisations from 20/3/66 till 16/10/66) from each of two sample places (sample place 5 taken near to the water edge and sample place 6 at about 3 m away from it, pond Blankaert at Woumen).

Only the following species of a more extensive census are taken into consideration:

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