Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
Gradients and Dispersal Patterns of Organic Matter and Metals as Recorded in Narragansett Bay Sediments
David Murray, Warren Prell, and numerous students
Funding: Brown OVPR seed grant, URI‐Seagrant, RI‐INBRE, NE Interstate Water Pollution Control Commission (EPA grant)
Murray, D.W., Prell, W.L., Rincon, C.E., and Saarman, E., 2007. Physical property and chemical characteristics of surface sediment grab samples from Narragansett Bay and the Providence and Seekonk Rivers, a summary of the Brown University Narragansett Bay Sediment Project (BUNBSP). Narragansett Bay Estuary Program Report NBEP‐07‐127.
Surface Grab Samples363: grain size, C, N,111: chemistry
= Seekonk River= Prov River= Upper Bay
+ = Greenwich Bay= West Passage
x = East Passage
= Seekonk River= Prov River= Upper Bay
+ = Greenwich Bay= West Passage
x = East Passage
ERL: effects range‐ low (10%)ERM: effects range‐median (50%)Long et al, 1995, Env. Mgt., 19: 81‐97
1850 ‐>
1610
1660
1710
1760
1810
1860
1910
1960
20100 50 100
Year AD
Pb (ppm) 0.0 0.4 0.8 1.2Hg (ppm)
Dep
th (cm)
Upper Narragansett Bay Core 8