|
KMID : 0380119820050000117
|
|
Korean Journal of Ecology
1982 Volume.5 No. 0 p.117 ~ p.122
|
|
|
Physico-Chemical Environment and Productivity of the Phytoplankton Community in the Jido Pond Ecosystem
|
|
Song Seung-Dal
M. Anwarul Huque
|
|
|
Abstract
|
|
|
|
The Jido Pond system was investigated from April, 1979 through March, 1980, in respect of seasonal changes in physico-chemical factors: i.e., temperature, pH, DO, BOD, COD, Cl^-, Ma^++, alkalinity, detergent, SiO_2, PO_4^3-, NH_4^+, NO_2^-, NO_3^-, total N, OM and OC; phytoplankton community growth; and the ecosystem metabolism. The phytoplankton community was represented by 23 species belonging to Chlorophyta, Bacillariophyta and Cyanophyta; each sharing 11, 9 and 3 respectively. The Chlorophyceans dominated the phytoplankton community contributing 75% of the total algal counts. The ranges of biotic diversity indices were, d, 0.85∼2.80; H, 1.10∼2.40; c. 0.13∼0.40; and e, 0.56∼0.90. The chlorophyll standing crop varied in between 0.043 and 0.385g/㎠ surface area. The ranges of photosynthetic and respiratory rates were 0.36∼4.50; and 0.10∼1.40 O_2 ㎎/l/hr, respectively. The monthly areal net primary production varied from 23.9 to 305.1C g/㎡/month. The Eu of the net production seasonally varied in between 0.31 and 7.80%, and the annual mean was 2.44%. The annual turnover times of phosphorus and nitrogen were 20 and 3 days, respectively.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|