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Full-Text Articles in Physical Sciences and Mathematics
Assessing Water Treatment Residuals As A Filtration Media For Phosphorus Removal At Wapato Lake - Tacoma, Wa, Brian Hite, Megan Hintz
Assessing Water Treatment Residuals As A Filtration Media For Phosphorus Removal At Wapato Lake - Tacoma, Wa, Brian Hite, Megan Hintz
Salish Sea Ecosystem Conference
Wapato Lake in Tacoma, WA is a 23-acre urban lake that has had problems of eutrophication and toxic algae blooms for over a hundred years. Inputs of phosphorus from both environmental and anthropogenic sources contribute to this problem. Much of the 900-acre watershed consists of residential or commercial development, increasing the amount of stormwater containing increased levels of phosphorus. Past management efforts designed to control eutrophication at Wapato included constructing a diversion structure to route phosphorus rich stormwater around the lake. This plan increased the retention time of Wapato to ≈ 8.5 years. We have been tasked by the City …
From Boat To Beach: Using Drift Cards To Improve Our Knowledge Of Ocean Currents, Areas At Risk And Oil Spill Trajectories., Andrew Rosenberger, Alexandra Woodsworth, Ross Dixon
From Boat To Beach: Using Drift Cards To Improve Our Knowledge Of Ocean Currents, Areas At Risk And Oil Spill Trajectories., Andrew Rosenberger, Alexandra Woodsworth, Ross Dixon
Salish Sea Ecosystem Conference
In October 2013, Raincoast Conservation Foundation and Georgia Strait Alliance launched 1644 drift cards from 9 locations along the shipping route through the Salish Sea to Vancouver, British Columbia. Drift cards are 4x6” pieces of marine plywood painted bright yellow and numbered. Drift cards have historically been used to assess the way in which floating objects move in various contexts, including potential oil spills from underwater pipelines, marine park planning, sewage outflows and more. In this case, these drift cards were released in the context of Kinder Morgan’s plans to twin the Trans Mountain pipeline, which if approved would see …
Quantification Of Pharmaceuticals, Personal Care Products, And Perfluoroalkyl Substances In Elliott Bay Sediments (Seattle, Washington), Margaret Dutch, Sandra Weakland, Valerie Partridge
Quantification Of Pharmaceuticals, Personal Care Products, And Perfluoroalkyl Substances In Elliott Bay Sediments (Seattle, Washington), Margaret Dutch, Sandra Weakland, Valerie Partridge
Salish Sea Ecosystem Conference
Pharmaceuticals and Personal Care Products (PPCPs) and Perfluoroalkyl Substances (PFASs) are identified as Chemicals of Emerging Concern (CECs) in Puget Sound due to their potential to cause adverse toxicological, biological, and ecological effects when introduced into the environment. Characterization of sources, transport patterns, and the fate of CECs in the environment has been prioritized as part of the Puget Sound Ecosystem Monitoring Program toxics monitoring strategy. These chemicals have been detected in ground water, rivers, and streams in the Pacific Northwest and in influent, effluent, and biosolids from Puget Sound municipal wastewater treatment plants over the past decade. They were …
A Molecular Framework To Identify Novel Modes Of Action Of Endocrine Disrupting Compounds In Shellfish, Mackenzie Gavery, Steven (Steven Beyer) Roberts
A Molecular Framework To Identify Novel Modes Of Action Of Endocrine Disrupting Compounds In Shellfish, Mackenzie Gavery, Steven (Steven Beyer) Roberts
Salish Sea Ecosystem Conference
Concern over human and wildlife health has brought increased attention to a group of emerging environmental contaminants referred to as endocrine disrupting compounds (EDCs). While progress has been made in describing the effects of these compounds, there are still gaps in our understanding of alternative modes of action and physiological effects outside of the reproductive axis, particularly in invertebrates. One way that EDCs may elicit these changes is through disruptions to normal epigenetic mechanisms. Epigenetics refers to heritable processes that alter gene activity without manipulating the underlying DNA sequence. Epigenetic marks, such as DNA methylation, are important regulators of gene …
Salmonid Early Response To Restored Freshwater Floodplain, Erin Morgan, Jeffery R. Cordell, Lauren Rich
Salmonid Early Response To Restored Freshwater Floodplain, Erin Morgan, Jeffery R. Cordell, Lauren Rich
Salish Sea Ecosystem Conference
Shortly after the construction of the Hansen Creek floodplain restoration project in 2010-2011, we conducted a pilot study of the initial use of the site by juvenile salmonids and the early development of invertebrate communities. We found that juvenile Coho salmon collected from the restored floodplain during periodic inundation events had higher instantaneous rations (a measure of feeding intensity) than Coho collected during regular monthly sampling in the creek channels. The floodplain site also had consistently higher insect abundances. Applying the data and lessons learned from the pilot study, we undertook a more comprehensive 13-month study of Hansen creek and …