Field Photos for:
Delaware River Estuary Bioaccumulation Field Study. Ashley, Baker, Secor and
Velinsky (2001-2002) Delaware River Basin Commission ($243,492).
Spatial and Temporal Variability in Food Web Structures in the Delaware
River Estuary. Horwitz, Ashley and Velinsky. (2001-2002). Environmental
Associates of Philadelphia. ($40,300).
In collaboration with University of Maryland's research scientists
Drs. Joel Baker and Dave Secor, Patrick Center researchers (Drs. Ashley
and Velinsky) will assess the
concentration of PCBs in biota and sediment within the Delaware River
Shown in this picture, scientists haul in otter trawl nets in hopes of
collecting representative species within various zones of the estuary.
A concurrent research project, funded by some members of the Academy
of Natural Sciences' "Environmental Associates", allows our
Fisheries Department (Dr. Rich Horwitz, Mr. Paul Overbeck, and Mr. Kevin
O'Donnell) to perform lavage (or gut purging) on collected channel catfish
and white perch.
This will allow us to access dietary similarities
and differences within different regions of the estuary.
This information will be critical when DRBC's forumulates its bioaccumulation model.