TRACE METAL FLUXES AT 

 JAMESTOWN {/L^M m'^day"') 



N 



l^ 



-1000 -500 







500 1000 >I000 



Nl 



I I I 1*1 Ui i«l*l«t*i I 1*1 I I I I I I 



50 -25 25 50 



(I) 



Cu 



I I I I I I I 1*1*1 



I I I I I I 1 1 I 



50 



25 





 (2) 



25 50 



Cd 







1*1 I I I I I I I I 



1.0 2.0 



-2.0 -1.0 



Figure 2-4. Histograms of heavy metal fluxes at Jamestown North 



(units are mM m"2 day"! ). 



20 



