8132

• UCREFRP Catalog Number: 8132
• Author: Lieberman, D. and T. Burke.
• Title: Limnology and Drift of Particulate Organic Matter Through the Lower Colorado River.
• USFW Year: 1991.
• USFW - Doc Type: Denver, CO.
• Copyright Material: NO

Table 32A.-The concentration of phytoplankton and zooplankton (>505-µm size-fraction) at Imperial Dam
(Jan. 1987 to June 1987).
Phytoplankton Taxa
1/5 2/9 3/18 4/20 5/18 6/22
Bacillariophyta (diatoms) p c a c c
Chlorophyta (green algae) a p a c c
Cyanophyta (blue-green algae) a p
Pyrrhophyta (dinoflagellates)
Rhodophyta (red algae)
Macrophyta P va p c
p = present (1-100 No./L)
c = common (101-1000 No./L)
a = abundant (1001-6000 No./L)
va = very abundant (>6001 No./L)
Zooplankton Taxa 1/5 2/9 3/18 4/20 5/18 6/22
Nauplius
Diaptomus spp.
Bosmina sp.
Daphnia spp. P p p
Daphnia eggs p P
Leptodora kindtii
Animal Fragments p
p = present (1-5 individuals/L)
c = common (6-15 individuals/L)
a = abundant (16-25 individuals/L)
va = very abundant (>25 individuals/L)
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