DARK BOTTLE RESULTS AT 
JAMESTOWN ( M nrf 2 day -1 ) 
N 
liJ I i i i i I i i 
<-500 -500 -250 
j ii 
♦i i i i i i*i i i i 
250 500 
Ni 
• • 
i i i i i i i i»i«i 
•l«l I I I I I I I I LI 
-50 -25 
Cu 
0 
(I) 
25 50 >50 
• • 
I I I l l I I I l»l» 
l l*M»l I l I I I 
-50 -25 0 
Cd 
25 50 
• • 
I I M !•! I I 1 * 1 * 
*1*1 1*1 1 I I 1 I J 
- 2.0 - 1.0 
1.0 2.0 
Figure 2-3. Histograms of dark bottle results at Jamestown North, 
calculated as fluxes (see text). Units are mM m‘2 day’^. 
19 
