COBIA (Rachycentron canadum) - World Wildlife Fund
COBIA (Rachycentron canadum) - World Wildlife Fund
COBIA (Rachycentron canadum) - World Wildlife Fund
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mg/L<br />
micrograms/m2<br />
% organic matter<br />
micrograms/m2<br />
Environmental Monitoring 2003-<br />
2008<br />
Summary Average Water Column Chlorophyll of aResults<br />
November 2003 - December 2004<br />
Average Benthic Chlorophyll-a<br />
November 2003 - December 2004<br />
0.2<br />
0.18<br />
0.16<br />
0.14<br />
0.12<br />
0.1<br />
40<br />
35<br />
30<br />
25<br />
20<br />
0.08<br />
0.06<br />
0.04<br />
0.02<br />
0<br />
10 100 300 500 (Control)<br />
Distance (m)<br />
Snapper Cobia Control<br />
15<br />
10<br />
5<br />
0<br />
6.0<br />
0 10 100 300 500 (control)<br />
Distance (m)<br />
0.004<br />
5.5<br />
0.004<br />
5.0<br />
4.76 4.68 4.75<br />
0.003<br />
0.003<br />
0.002<br />
0.002<br />
0.001<br />
0.001<br />
4.5<br />
4.0<br />
3.5<br />
3.0<br />
2.5<br />
2.0<br />
1.5<br />
0.000<br />
Ammonia Nitrite Nitrate Phosphate<br />
1.0<br />
Snapper Cobia Control<br />
Chlorophyll-a, dissolved nutrients, organic matter in sediments:<br />
No significant or cumulative impacts found in the water column and at the bottom<br />
Alston et al. 2005; 2006; Collins, J. 2006 (thesis); Benetti et al. 2006 (<strong>World</strong> Aquaculture); Brand et al. (MS in prep.)
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