The document summarizes the key points of a study on fish populations in a certain body of water from 1996-2009. It notes that fish populations declined by 10% from 1996-2000 but then rebounded by 50% from 2000-2005. However, from 2005-2009 the populations declined again by 30% according to the study.

1. F
29 F F F
F . F . F
F F F F F
F
. F F F
F F F F F
15 F 20 F F F F
F
F F F F F
F F F F F
F F 10 %
F 5 F F
F F F 50 % F F
F F F F F F F
F F F F
F F F 30 F
F
F F F 1996-1997
2007 2008-2009
F F3 F F F F F
F F F
F F F F F F

2. F F F F F F F FF
F F 24
FF
. F F F
F F F
F F F F F F F
60
F F F F
F F F F F F F
F F F F F FF
F F F F
F F F F
F F F F F
F F F F
FF F F F FF
F F F F F F 20 F
F F F F F F 21 F F F
F
. F F F F F
F F F
F F
F 12 F
1900 F 10 F
20 % F F F
F F F
F F F F F F
F
F F F
F F
F F F
F F
F F F F

3. F F F F F F F
F F
F F F F F F F
F F F F F
F F F F F
F F . F F F F F
F F F F
F F F F F F
F F F F
F 2-3 100 F
0.7-0.8 F F 60-70 F
F F F F 0.3-0.4 F
F
F F
F F
F F F F F F
F F F F F F F
F F F F F F FF
F F F F F F
F F F F F F F
F F F F
/////////////////////////////////////////
F F
02-5647000 F 1461-1462 e-mail : thaismc@nstda.or.th