ENVIS Centre, Ministry of Environment & Forest, Govt. of India

Printed Date: Saturday, January 25, 2020

Agniar estuary

Agniar estuary
 
 
Name of the River
Agniar river
Place
Keelathottam
District
Pudukottai
State
Tamil Nadu
Latitude
10° 20’N
Longitude
79° 23’E
Length
5 km
Average depth
0.5 m
Width
2 m
Type of the Estuary
Bar-built
Nature of the Substratum
Muddy
Commercially important Finfishes
Oysters
 
 
Image

Map

River Basin Map

 

 

 

 

Correlation coefficient (r) values between the environmental parameters.

Sl. No.
Parameters
At.temp.
W.temp.
pH
 
Salinity
 
DO
 
Silicate
Phosphorous
Nitrate
1
At.temp.
1
 
 
 
 
 
 
 
 
 
 
2
W.temp.
0.7618
1
 
 
 
 
 
 
 
 
 
3
pH
0.8244
0.7918
 
1
 
 
 
 
 
 
 
4
Salinity
0.8396
0.714
0.88582
 
1
 
 
 
 
 
5
DO
-0.608
-0.721
-0.6831
-0.6439
 
1
 
 
 
6
Silicate
-0.745
-0.639
-0.7843
-0.9036
0.8024
1
 
 
7
phosphorous
-0.647
-0.781
-0.6643
-0.7924
0.765
0.8457
1
 
8
Nitrate
-0.827
-0.786
-0.8295
-0.9144
0.8518
0.9042
0.8356368
1

  

Flora and fauna

 
Phytoplankton
 
Asterionella sp.
Ceratium sp.
Closterium sp.
Fragilaria sp.
Nitzschia sp.
Peridinium sp.
Planktonella sol
Thalassiothrix longisima
Thalassiothrix nitzschicoides
 
Algae
 
Eudorina
Merismopedia
Microcystis
Oscillatoria
Spirogyra
Volvox
 
 
Zooplankton
 
Acartia
Acetes sp.
Acrocalanus
Centropages
Euterpina sp.
Longipedia sp.
Macrosetella sp.
Microsetella sp.
Oithona sp.
Paracalanus
Pseudodiatptomus
 
 
 
References

Sukumaran, M., K. Muthukumaravel and R. Sivakami, 2013. Seasonal variations in physico-chemical characteristics of Agniar estuary southeast coast of India. Asia Pacific Journal of Research, 2(8): 108–120.

Habib Mohamed, T.A.M. and A. Abdul Rahaman, 1987. Seasonal distribution of Plankton in Agniar estuary. Journal of the Marine Biological Association of India, 29(1&2): 273–279.