1 - Cochin University of Science and Technology
1 - Cochin University of Science and Technology
1 - Cochin University of Science and Technology
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3. 1. Hydrography<br />
3. 1. 1. Temperature<br />
3. 1. 2. Salinity<br />
3. 1. 3. pH<br />
3. 1. 4. Di3solved oxygen<br />
3. 1 .5. Nutrients<br />
Chapter. 3<br />
ENVIRONMENTAL PARAMETERS<br />
3. 2. Comparison <strong>of</strong> stations based on hydrography parameters<br />
3. 3. Sediment characteristics<br />
3. 3. 1. S<strong>and</strong>! silt/ clay fraction<br />
3. 3. 2. Organic carbon<br />
3. 4. Rain fall patterns<br />
3. 1. Hydrography<br />
The parameters studied were temperature (atmospheric <strong>and</strong> sea<br />
surface), salinity (sea surface <strong>and</strong> interstitial), pH, dissolved oxygen,<br />
nutrients (sea surface <strong>and</strong> interstitial) such as P04, Si0 3 , N0 2 <strong>and</strong> N0 3 • For<br />
the study <strong>of</strong> hydrological parameters, the sampling stations were<br />
categorised in three areas. Stations 1 <strong>and</strong> 2, which were closer to each<br />
other, registered identical values <strong>and</strong> therefore together treated as study<br />
area 1. Similarly stations 3 <strong>and</strong> 4 were treated as study area 2 <strong>and</strong> stations<br />
5 <strong>and</strong> 6 as study area 3.<br />
3. 1. 1. Temperature eC)<br />
Atmospheric temperature<br />
At southern seagrass area, the temperature varied from 26.2°C<br />
(December 1999) to 31.6°C (October 1999). In the northern seagrass area,
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