Plankton studies in a mangrove environment: I first assessment of standing stock and principal ecological factors
1 - The quantitative relation between net phytoplankton, nanoplankton and zooplankton during the high and low tide for five days at a fixed station is reported here. The samples were collected at surface, 2 and 4 m near the Baguassu river, a typical region of mangrove environment. 2 - Measurements were made of transparence, salinity, temperature, pH, dissolved oxygen, suspended matter and dry weight (inorganic + organic). Culture of bacteria was also carried out to determine the degree of contamination of the water. 3 - Total phytoplankton cell counts were lower during high tide showing a good inverse correlation to salinity. 4 - The total organic matter varied from 6.80 to 16.80 mg/l and the dry organic matter of net plankton varied from 0.084 to 3.64 mg/m³. These results are presumably due to a great portion of the particulate matter that may be originated from nanoplankton and fine detritus. 5 - The average of nanoplankton was 97% greater than net phytoplankton and the net phytoplankton was in average 99,7% greater than zooplankton.
Main Authors: | Teixeira,Clovis, Kutner,Miryam B. |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Instituto Oceanográfico da Universidade de São Paulo
1962
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0373-55241962000300006 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Plankton studies in a mangrove environment II: the standing stock and some ecological factors
by: Teixeira,C., et al.
Published: (1965) -
Plankton studies in a mangrove environment III: bacteriological analysis of waters in Cananéia
by: Watanabe,Ko, et al.
Published: (1965) -
Plankton studies in a mangrove environment: IV. size fractionation of the phytoplankton
by: Teixeira,C., et al.
Published: (1967) -
Plankton studies in a mangrove environment: V. salinity tolerances of some planktonic crustaceans
by: Tundisi,J., et al.
Published: (1968) -
Plankton studies in a mangrove environment: VII. size fractionation of the phytoplankton: some studies on methods
by: Tundisi,J., et al.
Published: (1968)