Orcasphere

Thomas Gries We collected samples upstream of the southern boundary of the lower Duwamish clean up area and then compared with samples taken further downstream.   Background: focus on Harbor Island and a cleanup site at river mile 4.8, site selection and future load inluenced by sediment transport model and analysis report: >95% sediment load from [...]

Jeff Stern Mapping C flow through the food web can help us understand trophic strucure and species interactions and ass feeding guilds and which species may be most at risk from bioaccumulation.  Our model is a steady state partitioning (Arnot and Gobas, 2004; Condon, 2007) that uses Tim Essingtons trophic structure data, diet data from [...]

N long-term fate and bioaccumulation of PCBs in Puget Sound, Models of contaminant kinetics: Davis 2004 includes an active 10cm layer in Puget Sound Field data: In Puget Sound 1400kg PCBs (estimates range from 600-3500) are in active layer compared with ~7kg in water and ~40kg in biota (estimated from Sandy’s measurments) [PCB] in water: [...]

James Maroncelli Phase 1 of toxic loadings to PS initiated in 2006 by a coalition (PSAT+WA Ecology+…): realized that air deposition was an important pathway Phase 2: spring 07 $300k from EPA, $300 from Ecology TPA, $55k NOAA funded all programs (because we established a framework for project prioritzation) Surface runoff Atmospheric depositino Permitted wastewater [...]