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Sizes and daily growth rates of two algal phytoplankters in the field
Author(s) -
COBELAS M. ALVAREZ,
VELASCO J. L.,
RUBIO A.,
ACOSTA F. J.
Publication year - 1987
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1987.tb01301.x
Subject(s) - biology , chlorophyceae , zoology , growth rate , algae , population , ecology , botany , demography , mathematics , chlorophyta , geometry , sociology
SUMMARY 1. Measurements of daily growth rates, colony widths and lengths and cell widths and lengths were made on Fotterella tetrachlorelloides Buck and Staurastrum longiradiatum West & West (Chlorophyceae), collected from an eutrophic reservoir close to Madrid (Spain) on nine consecutive days of June 1983. 2. F. tetrachlorelloides exhibited growth followed by a period of decay, whilst S. longiradiatum grew more or less continuously throughout the observations. 3. A colony length‐width relationship was statistically significant throughout the growth period of F. tetrachlorelloides , but not when the population was decaying. This relationship was always statistically significant in S. longiradiatum . There was an inverse relationship between volume and daily growth rate in S. longiradiatum , but no such correlation was found in F. tetrachlorelloides . 4. The time course of statistical volume distributions and daily growth rates suggested that F. tetrachlorelloides was undergoing clonal ageing during the study.