Environment and development
in coastal regions and in small islands
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Coastal region and small island papers 3

Table 7. CARICOMP weekly habitat measurements:
Monthly mean of light attenuation (Secchi disk), 1992-1995.

Bahamas: BFS Colombia: INVEMAR Saba, NA: SMP
Barbados: BRI Jamaica: DBML, UWI Trinidad & Tobago: IMA
Belize: CBC Mexico: PMOR Venezuela: USB
Bermuda: BBSR Puerto Rico: UPR Venezuela: EDIMAR
Bonaire, NA: BMP    

 

Bahamas: Bahamian Field
Station		 Map
1995
Month Mo. # Coral reef    
mean and SD
(Secchi disk m)		 Seagrass   
mean and SD
(Secchi disk m)
Jan 37 44.7 11.6    
Feb 38 41.3 5.1    
Mar 39 42.2 2.8    
Apr 40 44.3 5.9 *8.8  
May 41 43.0 8.7 13.6 0.9
Jun 42 *37.0 12.7 17.6 1.2
Jul 43 *37.0   14.6 2.5
Aug 44 *34.0   10.9 3.8
Sep 45 *34.0      
Oct 46 *37.0   *9.6 0.4
Nov 47 32.0 2.8 10.2 2.4
Dec 48        
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Barbados: Bellairs Research Institute Map
1992     1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 1 13 25 37     *12.3   18.4 1.3 11.7 2.8     5.5 1.6 5.7 3.1 3.6 0.5
Feb 2 14 26 38     *17.3 2.1 16.7 1.1 13.2 0.8     7.4 5.2 6.6 0.4 4.3 2.0
Mar 3 15 27 39     18.9 3.6 18.8 1.2 13.3 2.2     8.6 5.3 6.1 0.5 5.0 1.8
Apr 4 16 28 40     18.7 1.5 *19.0 0.1 13.6 0.7     5.1 4.8 *7.3 5.8 6.8 2.0
May 5 17 29 41     18.4 2.4 11.7 4.3 *18.4 8.0     10.0 3.5 *7.3 3.8 *7.0 2.9
Jun 6 18 30 42         11.0 1.0 *14.1 0.1         5.3 0.7 *5.3 0.5
Jul 7 19 31 43     19.6 1.5 11.9 4.0         9.1 4.8 4.2 1.0    
Aug 8 20 32 44     17.8 2.6 *10.6 2.5 13.5 0.6     9.5 4.0 5.8 2.1 3.6 0.5
Sep 9 21 33 45     19.4 2.5 15.3 1.4         4.9 1.6 7.7 2.4 *2.9 0.1
Oct 10 22 34 46     18.1 0.9 11.2 2.8 14.0 2.0     5.0 1.9 5.1 1.6 4.1 0.4
Nov 11 23 35 47 *20.3   17.2 2.9 7.1 1.7 10.9 5.5 *9.0   4.2 1.8 5.1 1.3 2.9 2.1
Dec 12 24 36 48 11.5 10.0     *7.1 2.1 *8.1 2.1 *3.8 0.8 *6.6 3.4 *5.7 0.5 4.2 1.2
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Belise: Smithsonian Institute, Carrie Bow Cay
1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 13 25 37 24.5 0.7 17.3 0.6 19.0 4.0 12.7 2.5 14.0 1.0 7.0 3.7
Feb 14 26 38 21.6 2.3 16.3 1.8 *16.0 2.8 14.0 4.2 15.4 0.5 8.7 4.9
Mar 15 27 39 20.8 4.4 17.8 6.8 23.0 6.9 12.1 2.7 9.3 3.6 13.3 3.0
Apr 16 28 40 22.5 4.1 25.7 1.3 21.8 6.2 15.8 1.3 12.7 2.1 10.9 1.2
May 17 29 41 21.7 0.3 *20.5 1.4 21.6 0.9 11.0 1.7 *8.0 1.4 14.3 1.0
Jun 18 30 42 16.6 4.7 22.1 4.7 34.8 3.4 10.9 1.3 12.8 4.6 13.0 3.2
Jul 19 31 43 19.5 0.4 26.7 1.9 *35.5 3.5 10.3 2.2 14.9 0.9 11.0 2.0
Aug 20 32 44 21.7 2.0 *23.4 3.3 22.6 10.1 15.3 1.2 *14.3 1.8 13.9 3.0
Sep 21 33 45         17.8 2.5         10.5 2.7
Oct 22 34 46         11.4 4.5         9.4 5.3
Nov 23 35 47         23.2 9.3         8.8 5.1
Dec 24 36 48 *14.0   *21.5 6.4 25.3 2.1 *14.0   *13.0 0.0 *9.0 5.7
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Bermuda: Bermuda Biological Station for Research Map
1992     1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 1 13 25 37     *40.5 10.6 *36.6 1.3 *39.8       *17.0 4.9 *14.1 5.2 *14.4  
Feb 2 14 26 38         *36.3   *30.0       *15.3 0.0 *13.7 0.4 *12.0  
Mar 3 15 27 39     *50.0       29.8 4.5     18.1 2.1 *12.5 3.0 21.7 3.9
Apr 4 16 28 40         *34.5 3.5 *17.0       *14.0   *14.0 2.8 *25.3 12.3
May 5 17 29 41     *41.0   39.7 6.7 *50.0       12.8 1.1 13.9 0.3 *12.8  
Jun 6 18 30 42     34.4 4.7 *34.0 15.6 *33.5 10.6     23.3 2.4 *14.1 1.3 *13.0 2.5
Jul 7 19 31 43     31.7 5.0 *27.0 2.8 43.0 7.5     15.4 2.1 *13.0   *17.4 2.1
Aug 8 20 32 44     29.4 1.2 26.5 3.4         12.2 0.2 10.3 2.4 *7.3 1.3
Sep 9 21 33 45 39.4 10.5 33.2 4.3 *25.1 10.0 *19.7 2.8 11.2 4.0 11.6 2.8 12.8 0.6 *11.3 2.8
Oct 10 22 34 46 *25.0       *15.5   *29.0   11.1 1.5     11.4 1.7 *11.6 0.8
Nov 11 23 35 47 30.2 11.0         *32.0 14.3 16.7 2.9 *12.0   *8.0   *13.5 3.1
Dec 12 24 36 48 *45.9 6.9 *15.0       *42.5   *13.9 0.4 *12.8 2.3     *12.6  
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Bonaire, Netherlands Antilles:
Bonaire Marine Park		 Map
1994  1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)
Jan 25 37     24.7 2.5
Feb 26 38     25.5 1.0
Mar 27 39     26.4 4.3
Apr 28 40     26.9 3.9
May 29 41     25.9 3.3
Jun 30 42     27.4 3.0
Jul 31 43     27.4 1.9
Aug 32 44 21.6 4.9 26.9 1.1
Sep 33 45 21.2 2.3 29.2 1.8
Oct 34 46 22.0 4.1 27.7 1.4
Nov 35 47     24.1 1.3
Dec 36 48     25.8 1.4

 

Colombia: INVEMAR Map
1992     1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 1 13 25 37     *7.0   11.5 0.6 13.1 0.1     *3.5   3.0 1.9 3.2 1.8
Feb 2 14 26 38     10.8 1.0 12.9 1.7 13.0 2.2     5.7 2.0 6.6 3.1 5.7 3.3
Mar 3 15 27 39     12.3 3.2 14.7 4.0 15.7 3.9     6.8 2.1 7.3 0.4 4.6 2.1
Apr 4 16 28 40     15.7 4.9 12.5 5.6 16.8 1.7     6.7 0.3 6.6 4.3 4.9 2.8
May 5 17 29 41     8.0 2.6 15.5 3.4 18.2 3.7     3.8 1.6 7.5 3.7 10.2 4.5
Jun 6 18 30 42     12.4 5.0 12.7 2.9 11.5 4.8     5.1 1.8 3.9 1.3 4.9 2.1
Jul 7 19 31 43     10.3 1.3 11.8 1.1 14.3 0.5     4.2 1.5 3.0 0.9 4.3 0.9
Aug 8 20 32 44     14.5 5.1 16.0 1.0 10.8 4.2     6.0 4.3 7.3 4.9 5.3 1.5
Sep 9 21 33 45 *14.0   11.5 3.3 14.6 4.9 14.0 2.6 *9.0   7.9 2.0 6.2 1.9 6.2 1.7
Oct 10 22 34 46 16.2 4.6 15.8 3.8 9.0 4.8 11.1 4.2 7.2 2.6 6.8 2.3 6.7 3.1 5.5 1.0
Nov 11 23 35 47 14.0 5.7 11.6 2.5 15.8 4.2 15.8 2.4 4.9 2.6 6.1 5.8 7.5 3.5 3.8 2.7
Dec 12 24 36 48 *17.0 1.4 12.8 1.6 13.0 3.6 14.7 0.8 *3.0 0.7 4.7 4.6 3.0 1.9 3.9 3.2
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Jamaica: Discovery Bay Marine Laboratory,
University of the West Indies		 Map
1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 13 25 37 31.0 1.3 22.2 7.3     19.5 2.0 14.5 2.2 *11.0  
Feb 14 26 38 29.1 1.4 25.3 4.8 *24.3 0.4 17.5 1.0 13.4 0.7 *13.0  
Mar 15 27 39 29.7 2.9 *22.5   *17.0 4.2 17.1 1.7 *17.1   *13.1 0.1
Apr 16 28 40 28.8 4.5 *25.0   20.1 4.2 12.1 2.2 *11.3   11.7 2.9
May 17 29 41 *20.8 9.5 21.0 5.4 19.8 2.3 14.2 2.9 13.1 2.1 *10.0  
Jun 18 30 42 26.4 6.3 25.6 5.0 19.0 1.5 15.2 3.0 11.3 2.1 13.8 1.8
Jul 19 31 43 30.9 0.4 20.4 0.2 23.2 8.1 14.0 1.7 12.2 2.1 10.8 1.9
Aug 20 32 44 31.5 7.8 22.0 3.1 27.9 5.2 11.5 1.6 12.8 1.8 10.0 1.5
Sep 21 33 45 31.2 6.3 *22.0   24.0 1.7 13.3 1.1 *14.2   10.7 1.0
Oct 22 34 46 36.1 5.6 26.0 1.0 *24.0   12.9 1.4 12.0 0.7 *12.8 3.9
Nov 23 35 47     *15.0   *22.0 4.2     *12.0   8.7 1.3
Dec 24 36 48         22.7 1.8         12.8 2.8
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Mexico: Universidad Nacional Autónoma, Puerto Morelos Map
1992     1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 1 13 25 37     18.8 1.0 *17.0 5.7 *22.5 0.0     19.9 0.8 12.9 3.1 15.4 2.4
Feb 2 14 26 38     25.1 4.3 *18.1 4.4 *22.6       21.4 1.6 17.9 1.9 *16.2 4.9
Mar 3 15 27 39     *21.0 2.8 19.3 1.8 21.9 2.1     17.3 5.6 17.2 2.9 15.0 0.4
Apr 4 16 28 40     22.0 2.7 *20.7 1.2         16.1 4.9 15.1 0.6 *13.1 0.1
May 5 17 29 41     20.4 5.0 20.7 2.1 21.6 5.4     15.8 2.2 13.8 0.9 15.3 0.8
Jun 6 18 30 42     18.6 4.6 *22.0 1.4 *21.8 2.5     16.1 0.8 14.1 0.9 16.7 2.1
Jul 7 19 31 43     18.7 0.6 21.5 1.4 *22.1 2.7     15.3 1.9 16.5 1.8 *17.6 0.7
Aug 8 20 32 44     19.0 2.5 23.8 3.9 23.5 3.9     15.2 1.0 15.0 1.2 15.3 2.3
Sep 9 21 33 45     21.1 1.9 *23.7 2.8 25.9 1.7 *17.0   14.6 1.8 *13.8 0.1 14.1 1.5
Oct 10 22 34 46 *25.7 8.6 20.0 4.3 *22.1 0.1     13.8 2.6 14.4 1.8 *14.3 0.1 *8.0  
Nov 11 23 35 47 22.9 4.1 21.3 8.1 *24.0   23.7 5.8 20.5 2.7 11.4 2.0 *16.2   15.8 2.2
Dec 12 24 36 48 22.1 1.6 20.7 2.1 *15.3   26.6 5.3 19.7 3.8 11.9 0.6 *12.9 0.8 17.3 4.0
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Puerto Rico: University of Puerto Rico Map
1993     1994     1995
Month Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 13 25 37 *12.8 1.1 *10.3 0.4     *9.0 1.6
Feb 14 26 38 *13.5   *6.0       9.6 3.6
Mar 15 27 39 12.5 5.5 *10.9       8.5 1.0
Apr 16 28 40 *13.0 4.2         *7.4 0.9
May 17 29 41 *6.5 2.1 *15.0       *9.0 2.1
Jun 18 30 42 *10.5 0.7            
Jul 19 31 43 *12.5 0.7            
Aug 20 32 44 *9.5 2.1         *5.3  
Sep 21 33 45 *10.0 2.8     10.2 1.1 *10.1  
Oct 22 34 46 *15.3 6.7 7.3 2.6 12.9 1.5 7.2 1.3
Nov 23 35 47 *9.0 1.4     10.9 0.7 *8.9 2.8
Dec 24 36 48 *12.0   *6.0   *12.7 0.8 *8.0 1.4
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Saba, Netherlands Antilles: Saba Marine Park Map
1992     1993     1994     1995
Mo. Mo. # Coral reef    
mean and SD (Secchi disk m)		 Seagrass   
mean and SD (Secchi disk m)
Jan 1 13 25 37     21.7 2.5     24.5 1.0     19.6 1.4     24.5 1.0
Feb 2 14 26 38     24.0 2.8     22.0 3.5     22.5 3.0     22.0 3.5
Mar 3 15 27 39     22.0 6.9 *15.0   23.8 1.8     22.0 5.3     23.8 1.8
Apr 4 16 28 40     25.5 3.8 23.0 2.7 21.3 1.2     25.0 4.8     22.0 1.6
May 5 17 29 41     25.3 3.8 22.0 1.6 21.6 2.5     25.0 4.2     21.6 2.5
Jun 6 18 30 42     18.5 2.0 19.8 1.3 19.7 0.6     17.7 1.2     19.7 0.6
Jul 7 19 31 43     25.8 11.1 19.0 1.2         21.8 5.2        
Aug 8 20 32 44     24.5 1.7 18.8 4.4 17.3 3.1     23.0 2.4     17.3 3.1
Sep 9 21 33 45 25.3 1.5 22.8 2.6 22.3 2.2     19.4 5.9 21.5 3.5        
Oct 10 22 34 46 30.3 3.9 *24.0   21.3 9.3 *21.0   29.2 4.7 *24.0   19.8 5.9 *20.0  
Nov 11 23 35 47 12.5 4.1     23.3 2.2 *20.0 0.0 13.3 3.8     23.3 2.2 *20.0 0.0
Dec 12 24 36 48 19.0 1.0     23.8 1.5 20.3 1.5 17.7 0.6     23.4 2.2 *20.5 2.1
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Trinidad & Tobago:
Institute of Marine Affairs		 Map
1994 
Mo. Mo. # Coral reef    
mean and SD
(Secchi disk m)		 Seagrass   
mean and SD
(Secchi disk m)
Jan 25 15.5 0.9 3.5 2.8
Feb 26 14.2 2.8 4.8 2.0
Mar 27 *11.8 0.4 *7.5 0.7
Apr 28 *7.0   *7.0  
May 29 *12.5 4.9 *8.5 4.9
Jun 30 *17.0   *7.0  
Jul 31 *14.0   *8.0  
Aug 32        
Sep 33        
Oct 34        
Nov 35        
Dec 36        
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Venezuela: Universidad de Simon Bolivar Map
1992     1993     1994     1995
Mo. Mo. # Coral reef    
mean (Secchi disk m)		 Seagrass   
mean (Secchi disk m)		 Mangrove
mean (Secchi disk m)
Jan 1 13 25 37   *6.9 *10.0 *11.5   *4.2 *11.9 *10.5   *3.0 *5.0
Feb 2 14 26 38     *11.5 *15.0     *9.0 *9.0   *2.0 *4.0
Mar 3 15 27 39   *8.0 *10.0 *7.4   *7.0 *8.0 *5.5   *3.8 *2.1
Apr 4 16 28 40   *10.0 *8.0     *3.0 *5.0     *2.0  
May 5 17 29 41   *10.0 *12.0 *9.0   *4.0   *7.0     *3.0
Jun 6 18 30 42   *7.5   *8.0   *10.0   *4.0     *3.0
Jul 7 19 31 43   *9.0 *8.5 *10.0   *7.5 *4.5 *11.0 *4.0 *2.5  
Aug 8 20 32 44   9.0 *15.5     *5.0 *5.8   *3.8 *3.5  
Sep 9 21 33 45 *6.0 *11.0 *9.5   *3.6 *7.0 *7.5   *3.0    
Oct 10 22 34 46 *10.7   *9.0   *5.2 *9.9 *9.0   *3.4    
Nov 11 23 35 47   *8.4 *6.0   *4.7 *4.0 *7.0   *4.0 *5.6  
Dec 12 24 36 48     *10.5     *3.0 *8.5   *3.8 *3.0  
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

Venezuela: EDIMAR Map
  1993     1994     1995
Mo. Mo. # Seagrass 
 mean and SD (Secchi disk m)
Jan 13 25 37 1.8 1.0 *4.2 0.9 *3.1 1.3
Feb 14 26 38 3.2 2.3 *1.8 1.1 *2.1 0.5
Mar 15 27 39 2.2 1.0 2.1 0.5 2.8 1.0
Apr 16 28 40 1.8 0.6 *2.5 0.7 *4.7 2.4
May 17 29 41 2.9 0.5 2.2 0.0 2.4 0.6
Jun 18 30 42 1.5 0.4 3.6 2.5 *2.0 0.9
Jul 19 31 43 1.6 0.2 *4.3 0.4 *4.4 2.3
Aug 20 32 44 4.0 3.4 4.7 2.5 *5.2  
Sep 21 33 45 3.3 1.6 *3.5 0.0 *3.5 0.7
Oct 22 34 46 2.7 0.8 *2.2 1.2 *2.9 1.9
Nov 23 35 47 2.2 0.3 3.3 1.2 3.3 1.6
Dec 24 36 48 2.9 0.7 *4.0   *3.9 2.3
*Monthly mean values calculated from less than 3 weeks data; values without SD indicate only 1 week's measurement, values with SD indicate 2 weeks' measurement.

 

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