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Articles 1141 - 1170 of 2456

Full-Text Articles in Physical Sciences and Mathematics

Key Factors Influencing Change In Pacific Herring Populations: A Qualitative Network Model Approach, Tessa B. Francis Apr 2018

Key Factors Influencing Change In Pacific Herring Populations: A Qualitative Network Model Approach, Tessa B. Francis

Salish Sea Ecosystem Conference

Pacific herring are a foundational species in the Salish Sea, providing important cultural, social, economic, and ecological benefits throughout the ecosystem. While herring are common across the Salish Sea, patterns of their abundance in recent years vary spatially. Herring are subject to many factors that may influence their abundance and distribution, but there is no agreement on what the key factors are or, therefore, how to address local declines and support herring resilience. Here, we present results from a qualitative network model of the herring ecological system evaluating the relative support for the influence of different possible factors on herring …

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Comparing Marine Survival Among Chinook And Coho Salmon And Steelhead Trout In The Salish Sea, Kathryn L. Sobocinski, Eric John Ward, Correigh M. Greene Apr 2018

Comparing Marine Survival Among Chinook And Coho Salmon And Steelhead Trout In The Salish Sea, Kathryn L. Sobocinski, Eric John Ward, Correigh M. Greene

Salish Sea Ecosystem Conference

Recent work on marine survival in Chinook and coho salmon and steelhead trout has shown a decline in marine survival in the Salish Sea that was not evident in other regions. For Chinook, the decline was not explained well by oceanographic patterns, and for coho, regional-scale patterns were suggested as important in understanding survival. Recent work on the development of indicators of Puget Sound steelhead survival has shown that predator abundance and patterns in hatchery releases, as well as oceanographic conditions are informative in predicting marine survival. While the three species of focus for the Salish Sea Marine Survival Project …

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Spatio-Temporal Variation In The Nearshore Forage Fish Community In The Strait Of Juan De Fuca, Kinsey L. Frick, Anna Kagley, Kurt Fresh, Larry Ward, Jameal Samhouri, A. Ole Shelton Apr 2018

Spatio-Temporal Variation In The Nearshore Forage Fish Community In The Strait Of Juan De Fuca, Kinsey L. Frick, Anna Kagley, Kurt Fresh, Larry Ward, Jameal Samhouri, A. Ole Shelton

Salish Sea Ecosystem Conference

Nearshore marine habitats in the Salish Sea support populations of many fish species including migrating juvenile salmon, benthic sculpins, and rearing and spawning forage fish. The Strait of Juan de Fuca (SJF) is critical as a corridor between the Pacific Ocean and inland water bodies. Though known to utilize this area, the population dynamics of ecologically important forage fish are poorly understood. Over 9 years of monthly beach seine sampling (April – September) at 24 sites along 70 km of coastline in the SJF, we have observed high variability in fish catch across years, sites, and seasons. Annual catches ranged …

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Is Local Adaptation A Factor In Planning Eelgrass Restoration? Initial Assessment Of Responses To Temperature By Eelgrass Growing Across A Stressor Gradient, Kate Buenau, Celia Thurman, John Vavrinec, A. B. (Amy B.) Borde, Ronald M. Thom Apr 2018

Is Local Adaptation A Factor In Planning Eelgrass Restoration? Initial Assessment Of Responses To Temperature By Eelgrass Growing Across A Stressor Gradient, Kate Buenau, Celia Thurman, John Vavrinec, A. B. (Amy B.) Borde, Ronald M. Thom

Salish Sea Ecosystem Conference

Large-scale eelgrass restoration in an environment as complex as the Salish Sea requires estimating the effects of a wide range of environmental conditions (e.g. temperature, salinity, turbidity) on the effectiveness of restoration actions in different locations. We have developed a spatial model of eelgrass growth in response to environmental drivers, based on physiological data collected in Sequim Bay, WA, to aid in identifying restoration sites. However, field tests suggest that the model underestimates the capability of eelgrass to grow in conditions more stressful than Sequim Bay. A critical uncertainty is the extent of localized genotypic and/or phenotypic adaptations by eelgrass …

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Lower Big Quilcene River Multiple Benefits Restoration Project, Michelle Myers, Mendy Harlow Apr 2018

Lower Big Quilcene River Multiple Benefits Restoration Project, Michelle Myers, Mendy Harlow

Salish Sea Ecosystem Conference

A coalition led by the Hood Canal Salmon Enhancement Group (HCSEG), Jefferson County (County), and The Nature Conservancy (TNC) are partnering on an integrated multiple benefits floodplain protection and restoration project along the lower 3 miles of the Big Quilcene River. This multiple benefits project combines concepts and actions as a result of recent stakeholder and project area landowner outreach efforts. The restoration and protection project will address a suite of community needs including flood risk reduction, salmon habitat restoration, shellfish protection, water quality improvements, recreational access, education, and economic vitality. Project design and protection elements in the Lower Big …

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Data And Industrial Stormwater General Permit Benchmarks; What We Know, Deanna Seaman, Anita Fichthorn Apr 2018

Data And Industrial Stormwater General Permit Benchmarks; What We Know, Deanna Seaman, Anita Fichthorn

Salish Sea Ecosystem Conference

The Port of Tacoma and the Northwest Seaport Alliance are subject to three types of general stormwater management permits. In our quest for improving the water quality of the discharges from our properties, we have collected a large amount of water quality data. We use that data to inform source control and treatment technologies we deploy on our sites. We also share our data and results with tenants to help inform them of their source control and treatment choices based on the actual stormwater chemistry generated by site activities. We also use the data to customize treatment media recipes.

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The Puget Sound Federal Task Force: An Orientation To The Task Force, Reflections On The First Year And Preview Of What's Ahead, Gina Bonifacino, Peter Murchie Apr 2018

The Puget Sound Federal Task Force: An Orientation To The Task Force, Reflections On The First Year And Preview Of What's Ahead, Gina Bonifacino, Peter Murchie

Salish Sea Ecosystem Conference

Coordination and collaboration between government agencies is essential to protect and restore Puget Sound. Prior to 2016, U.S. federal agencies coordinated as the Puget Sound Federal Caucus, operating mostly at the regional level without a formal plan or budget. With the Puget Sound Congressional delegation, Puget Sound Partnership, tribes and others recognizing that formal program and budget coordination at the federal level was needed to effectively protect and restore Puget Sound and Treaty protected resources, the White House Council on the Environmental Quality (CEQ) led 9 federal Cabinet Secretaries and agency directors to sign a Memorandum of Understanding (MOU) forming …

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Salish Sea Model Ecosystem - Lower Trophic: Episodic Nutrient Supply In The Northern Strait Of Georgia, Elise Olson, Susan E. Allen Apr 2018

Salish Sea Model Ecosystem - Lower Trophic: Episodic Nutrient Supply In The Northern Strait Of Georgia, Elise Olson, Susan E. Allen

Salish Sea Ecosystem Conference

Salish Sea Model Ecosystem - Lower Trophic (SMELT) is a three-dimensional biogeochemical model coupled to a NEMO-based physical model of the Salish Sea, run operationally at UBC as part of the SalishSeaCast system. In this presentation, we will first establish the model's skill at reproducing nitrate concentrations by comparison with data from the Pacific Salmon Foundation’s citizen science program and Institute of Ocean Sciences repeat surveys. We will then discuss episodic nitrate supply to the surface waters of the northwest Strait of Georgia. This phenomenon is evident as a region of elevated mean (March-November) and standard deviation (April-September) of surface …

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The Effects Of Anti-Sea Lice Drugs And Pesticides On Marine Zooplankton, Jenna Keen Apr 2018

The Effects Of Anti-Sea Lice Drugs And Pesticides On Marine Zooplankton, Jenna Keen

Salish Sea Ecosystem Conference

The quality of near-shore coastal waters and estuaries is of great concern to North Americans, particularly as these ecosystems become increasingly threatened by pollution. An improved understanding of chemical impacts on near-shore ecosystems is essential to responsible stewardship of these coastal areas. In recent years, the aquaculture industry has become a major contributor to the Canadian economy, however, this industry’s use of chemicals, including those used in disinfectants, anti-fouling paints, and feed additives has resulted in the contamination of local net pen areas. Another complication of these net-pen areas is the abundance of sea lice on the fish, which the …

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Farmers' Relationship With Nature: How And Why It Matters, Adrian Semmelink, Kai M.A. Chan, Terre Satterfield Apr 2018

Farmers' Relationship With Nature: How And Why It Matters, Adrian Semmelink, Kai M.A. Chan, Terre Satterfield

Salish Sea Ecosystem Conference

Understanding why producers adopt best management practices (BMPs) is vital to protecting waterbodies such as the Salish Sea. While the economic bottom line is important to agricultural producers, they also make decisions through a socio-cultural lens influenced by their world-views and psychological biases. This presentation provides insights into economic, and non-economic motivations underling farming practices in British Columbia. We conducted 166 surveys and 30 on-farm interviews with agricultural producers across British Columbia (BC) as part of an assessment of BC’s Environmental Farm Plan program. The survey results find diverse motivations for farming. Non-economic motivations including lifestyle, reputation, and stewardship of …

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Modeling Change In The Transboundary Salish Sea, Tessa B. Francis Apr 2018

Modeling Change In The Transboundary Salish Sea, Tessa B. Francis

Salish Sea Ecosystem Conference

No abstract provided.

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Surf Smelt Spawning Habitat Trends In South Puget Sound, Erin Dilworth, Phillip Dionne Apr 2018

Surf Smelt Spawning Habitat Trends In South Puget Sound, Erin Dilworth, Phillip Dionne

Salish Sea Ecosystem Conference

Forage fish such as surf smelt (Hypomesus pretiosus) are a crucial piece of the marine food web in the Salish Sea as they are a vital conduit of energy from primary producers to higher level consumers, like marine mammals, seabirds, and salmon. Protection of forage fish spawning habitat is afforded under the Washington State Hydraulic Code, but in order for this habitat to be protected we must be able to document where it occurs. Surveys for nearshore spawning forage fish were first implemented by the Washington Department of Fish and Wildlife (WDFW) beginning in 1972. These early surveys were sometimes …

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Recent And Projected Seasonal Changes To River Flows Combine With Human Pressures To Restructure The Base Of The Marine Food Web In Puget Sound, Christopher Krembs, Julia Bos, S. L. Albertson, Mya Keyzers, Allison Brownlee Apr 2018

Recent And Projected Seasonal Changes To River Flows Combine With Human Pressures To Restructure The Base Of The Marine Food Web In Puget Sound, Christopher Krembs, Julia Bos, S. L. Albertson, Mya Keyzers, Allison Brownlee

Salish Sea Ecosystem Conference

Quantifying large-scale climate impacts, ecosystem responses, and human pressures requires sustained ecosystem monitoring and data integration. The Salish Sea is influenced by oceanic processes and hydrological cycles on land. The interplay of processes across the land-ocean continuum benefits the Puget Sound ecosystem by extending the productive cold-water food web of the upwelling system off Washington’s coast into Puget Sound during summer while buffering water temperatures in winter. Circulation patterns that drive water exchange between Puget Sound and the ocean are responding to climate and the timing of river flows. Historically the freshet and coastal upwelling coincide in summer and allow …

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Warm Water Temperature Regimes In Eelgrass Beds (Z. Marina And Z. Japonica) Of Padilla Bay, Wa, Heath Bohlmann, Jude K. Apple, Nicole Burnett, Suzanne Shull Apr 2018

Warm Water Temperature Regimes In Eelgrass Beds (Z. Marina And Z. Japonica) Of Padilla Bay, Wa, Heath Bohlmann, Jude K. Apple, Nicole Burnett, Suzanne Shull

Salish Sea Ecosystem Conference

Padilla Bay, WA has over 3300 hectares of eelgrass with vast areas of intermixed beds of the native Zostera marina and non-native Zostera japonica. Water temperature is thought to be one of the primary influences on eelgrass distribution, and long term monitoring shows that temperatures in Padilla Bay have increased substantially (mean increase >2°C) from 2011 through 2016. We were interested to see if changes in eelgrass distribution were correlated with the changes we observed in water temperature in Padilla Bay, however, our long term temperature monitoring station is located in a shallow channel within the eelgrass beds. Because of …

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Sensitivity Of The Regional Ocean Acidification And Carbonate System In Puget Sound To Ocean And Freshwater Inputs, Laura Bianucci, Wen Long, Tarang Khangaonkar, G. J. Pelletier, Anise Ahmed, Teizeen Mohamedali, Mindy Roberts, Cristiana Figueroa-Kaminsky Apr 2018

Sensitivity Of The Regional Ocean Acidification And Carbonate System In Puget Sound To Ocean And Freshwater Inputs, Laura Bianucci, Wen Long, Tarang Khangaonkar, G. J. Pelletier, Anise Ahmed, Teizeen Mohamedali, Mindy Roberts, Cristiana Figueroa-Kaminsky

Salish Sea Ecosystem Conference

While ocean acidification was first investigated as a global phenomenon, coastal acidification has received significant attention in recent years, as its impacts have been felt by different socio-economic sectors (e.g., high mortality of shellfish larvae in aquaculture farms). As a region that connects land and ocean, the Salish Sea (consisting of Puget Sound and the Straits of Juan de Fuca and Georgia) receives inputs from many different sources (rivers, wastewater treatment plants, industrial waste treatment facilities, etc.), making these coastal waters vulnerable to acidification. Moreover, the lowering of pH in the Northeast Pacific Ocean also affects the Salish Sea, as …

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Going Up The Production Stream To Protect The Salish Sea, Sean Smith Apr 2018

Going Up The Production Stream To Protect The Salish Sea, Sean Smith

Salish Sea Ecosystem Conference

The world today is awash in a sea of chemicals. Many of which on are defined as persistent, bioaccumulative and toxic (PBTs). PBTs substances are a class of compounds that have high resistance to degradation from abiotic and biotic factors, high mobility in the environment and high toxicity. These PBTs can migrate from products into the water, air, or soil where they can remain for decades damaging the environment and hurting public health and wildlife. While regulatory agencies have done an excellent job addressing smoke stack and water pipe emission, today much of the pollution that enters our environment comes …

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Diffusive Gradient Thin-Films In Seawater: Time Integrated Technique For Aqueous Trace Metal Monitoring In Impacted Waterways, Jonathan Strivens, Robert Johnston, Nicholas Schlafer, Nicholas Hayman, Jill M. Brandenberger, Gunther Rosen, Michelle Aylward, Paul Caswell, Matt Jabloner, Heather Jennings Apr 2018

Diffusive Gradient Thin-Films In Seawater: Time Integrated Technique For Aqueous Trace Metal Monitoring In Impacted Waterways, Jonathan Strivens, Robert Johnston, Nicholas Schlafer, Nicholas Hayman, Jill M. Brandenberger, Gunther Rosen, Michelle Aylward, Paul Caswell, Matt Jabloner, Heather Jennings

Salish Sea Ecosystem Conference

As part of an ambient monitoring program being conducted for the Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Sinclair and Dyes Inlets of the Puget Sound, receiving waters of the Inlets are routinely monitored for trace metals and toxicity to assess water quality status, track progress in achieving water quality goals, and demonstrate protection of aquatic life. Recently, aqueous metal bioavailability using diffusive gradient thin-film (DGT) passive samplers has been incorporated into the monitoring program. The DGT samplers allow for the measurement of trace metal concentrations integrated over time via in situ chelation of labile metals. The DGT …

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Noaa Rockfish Recovery Management And Research In The Salish Sea, Washington, James R. (James Robert) Selleck, Dan Tonnes Apr 2018

Noaa Rockfish Recovery Management And Research In The Salish Sea, Washington, James R. (James Robert) Selleck, Dan Tonnes

Salish Sea Ecosystem Conference

Rockfish are a long-lived species group that provide an important function for the food web dynamics in the Salish Sea, as both a mid-level trophic predator and important prey source, and they hold cultural significance to the region. Rockfish are comprised of over 25 different species locally, and over 60 species from California to Alaska. Many species experienced declines since the 1980’s, and two species are listed in the Salish Sea under ESA as threatened (yelloweye) or endangered (Bocaccio). Different species occupy a range of habitat types, from deep-water rock piles and hard bottom substrate, to nearshore kelp forests and …

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Satellite-Derived Ecosystem Indicators: A Retrospective Analysis Of High Resolution Ocean Color And Sea Surface Temperature Products In The Salish Sea, Benjamin Leonard, Brandon S. Sackmann, Nicholas Shonka Apr 2018

Satellite-Derived Ecosystem Indicators: A Retrospective Analysis Of High Resolution Ocean Color And Sea Surface Temperature Products In The Salish Sea, Benjamin Leonard, Brandon S. Sackmann, Nicholas Shonka

Salish Sea Ecosystem Conference

A complete set of MERIS CoastColour data products (2002 to 2012) were developed for the greater Salish Sea, including Puget Sound, Strait of Georgia, and the continental shelf/slope off Washington and Vancouver Island, BC. These data were processed by Integral Consulting Inc. for the Salish Sea Marine Survival Project and is being made available to the regional research community for any number of applications. The dataset includes both nearshore and offshore processed satellite data products at 300 m resolution for over 10 years (3 day revisit). Data products highlight seasonal water quality trends in the Salish Sea and show how …

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Shoreline Armoring Implementation Strategy: A Regional Strategy To Support And Align Actions From Local To Regional Scales, Jennifer Griffiths Apr 2018

Shoreline Armoring Implementation Strategy: A Regional Strategy To Support And Align Actions From Local To Regional Scales, Jennifer Griffiths

Salish Sea Ecosystem Conference

Puget Sound recovery is guided by regional and local strategies developed and implemented by a diverse array of actors. Implementation Strategies are a regional planning approach designed to advance and enhance recovery efforts towards specific Puget Sound Vital Sign indicator targets. The Shoreline Armoring Vital Sign aims to reduce the impacts of shoreline armor on the Puget Sound nearshore. The Shoreline Armoring Implementation Strategy addresses the interconnected nature of regulatory, incentive, technological, and planning solutions to reduce armor impacts and recover shoreline processes in Puget Sound. This poster describes four strategies to advance recovery that leverage past and ongoing investments …

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The Challenges Of Moving From Framework Development To The Real World: Operationalising An Oil Vulnerability Framework For Oil Spill Response In The Canadian Pacific Region, Lucie Hannah, Matthias Herborg, Candice St. Germain, Sharon Jeffery Apr 2018

The Challenges Of Moving From Framework Development To The Real World: Operationalising An Oil Vulnerability Framework For Oil Spill Response In The Canadian Pacific Region, Lucie Hannah, Matthias Herborg, Candice St. Germain, Sharon Jeffery

Salish Sea Ecosystem Conference

To support oil spill response planning, and to focus data collection within the Department of Fisheries and Oceans, Canada (DFO), an oil vulnerability framework was developed in 2016, and applied to the Pacific region. Using a criteria scoring (Exposure, Sensitivity and Recovery categories) and screening process, the framework identifies and ranks species sub-groups in terms of their vulnerability to oil. The framework outputs have been applied during oil spill exercises and during the recent Jake Shearer incident near Bella Bella in Nov 2017. Operationalising the framework at the spatial scale and within the time constraints of oil spill response requires …

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Forecasted Flow And Temperature Changes In Fish-Bearing Streams Of The Hood Canal And Strait Of Juan De Fuca, Ryan Murphy, Cynthia Rossi Apr 2018

Forecasted Flow And Temperature Changes In Fish-Bearing Streams Of The Hood Canal And Strait Of Juan De Fuca, Ryan Murphy, Cynthia Rossi

Salish Sea Ecosystem Conference

Critical freshwater fish spawning and rearing habitats in western Washington State are sensitive to environmental changes. Concern is growing among tribes and other natural resources managers over the impacts that climate change might have on economically and culturally important fish populations. In 2016, the Point No Point Treaty Council initiated a multi-stage project which aims to forecast stream flow and stream temperature changes throughout the 21st century for fish-bearing watersheds which drain into the Hood Canal and eastern Strait of Juan de Fuca. The high-resolution Distributed Hydrology Soil Vegetation model (DHSVM) and coupled RBM stream temperature model are used to …

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Citizen Science Demonstrates Need And Importance At Whatcom County Beaches, Natalie Lord, Olivia Latimer, Eleanor Hines Apr 2018

Citizen Science Demonstrates Need And Importance At Whatcom County Beaches, Natalie Lord, Olivia Latimer, Eleanor Hines

Salish Sea Ecosystem Conference

The Blue Water Task Force (BWTF) is a volunteer-run, water testing, education and advocacy program of the Surfrider Foundation. The purpose is to engage citizen scientists in monitoring pollution and provide pollution prevention awareness at popular marine recreation areas. The Northwest Straits (NWS) Chapter samples monthly at six sites in the Bellingham Bay area for enterococcus, an indicator bacteria. Whatcom County often has beach closures throughout the summer due to poor water quality that does not meet the federal standards for recreation. One such location is Little Squalicum Beach, which has a permanent swimming advisory due to high bacteria levels. …

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Soundtoxins: A Puget Sound Harmful Algae Monitoring Partnership, Teri King, Lyndsey Claassen, Jerry Borchert, Vera Trainer Apr 2018

Soundtoxins: A Puget Sound Harmful Algae Monitoring Partnership, Teri King, Lyndsey Claassen, Jerry Borchert, Vera Trainer

Salish Sea Ecosystem Conference

SoundToxins is a diverse partnership of aquaculture businesses, federal, tribal, state, and local governments, education institutions, and Puget Sound residents that monitor for harmful algae in Puget Sound, managed by NOAA’s Northwest Fisheries Science Center and Washington Sea Grant. The intensively trained partners provide early warning of harmful algal bloom (HAB) events by evaluating water samples gathered weekly from 35 stations throughout Puget Sound looking specifically for Dinophysis, Alexandrium, Pseudo-nitschia and Azadinium and alerting health and natural resource agencies of their presence and concentration. The online database and mapping allows for near-real time viewing of data entered by SoundToxins partners …

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Assessment Of Fecal Glucocorticoid Metabolites Of Cortisol And Corticosterone In Captive Sea Otters, Enhydra Lutris, Amy Olsen, Shawn Larson Apr 2018

Assessment Of Fecal Glucocorticoid Metabolites Of Cortisol And Corticosterone In Captive Sea Otters, Enhydra Lutris, Amy Olsen, Shawn Larson

Salish Sea Ecosystem Conference

Glucocorticoid hormones in blood are frequently measured as indicators of vertebrate stress response. Sea otters (Enhydra lutris), common in zoos and aquariums, have been documented to secrete both cortisol and corticosterone from adrenal glands. Animals under human care allow for longitudinal study, and non-invasive collection of samples are a priority to the Seattle Aquarium. Glucocorticoid hormones are secreted, metabolized, and excreted in feces. Fecal samples can be collected opportunistically without contaminating the sample with a stress response from handling or taking blood. These samples are often coupled with extensive environmental and medical health notes, which can retrospectively link peaks with …

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Citizen Science In The Aquatic Reserves, Erica Bleke Apr 2018

Citizen Science In The Aquatic Reserves, Erica Bleke

Salish Sea Ecosystem Conference

The Department of Natural Resources (DNR) has designated eight Aquatic Reserves in the state of Washington that encompass important native ecosystems on state-owned aquatic lands. Seven of these reserves are in the Salish Sea, and of these, six are supported by Citizen Stewardship Committees. These Committees are made up of dedicated local volunteers who help the DNR implement the management actions of their nearby reserve through outreach, education, and citizen science projects. Within the network of the Aquatic Reserves, the current citizen science being conducted by volunteers is diverse and dependent upon the needs of the reserve and the skillset …

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Inventory Methods For Sea Asparagus In The Salish Sea: Working With Indigenous Communities To Integrate Uav Technology And Aquatic Plant Management, Jessica Holden, Carolyn Whittaker, Cydne Potter, Cory Frank Apr 2018

Inventory Methods For Sea Asparagus In The Salish Sea: Working With Indigenous Communities To Integrate Uav Technology And Aquatic Plant Management, Jessica Holden, Carolyn Whittaker, Cydne Potter, Cory Frank

Salish Sea Ecosystem Conference

On the west coast of British Columbia, licences for the harvesting of sea asparagus are issued annually, requiring information on the baseline distribution and available biomass of the resource. While previous research has documented the biomass of sea asparagus in saltwater marshes of Boundary Bay and Cowichan Bay, this inventory is limited in geographic scope. Traditional ground transect survey methods are expensive and not feasible for expansion of inventory work across the Strait of Georgia. The use of small Unmanned Aerial Vehicles (UAVs) has gained recognition as a highly effective and accessible approach for mapping coastal vegetation. In this study, …

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Assessing 21st Century Contaminants Of Concern Using Integrative Passive Sampling Devices To Obtain More Meaningful And Cost Effective Data On Impacts From Stormwater Runoff, Robert Johnston, Michelle Aylward, Gunther Rosen, Jonathan Strivens, Nicholas Schlafer, Jill M. Brandenberger, Nicholas Hayman, Jason Belden, Marienne Colvin, Heather Jennings, Matt Jabloner, Paul Caswell Apr 2018

Assessing 21st Century Contaminants Of Concern Using Integrative Passive Sampling Devices To Obtain More Meaningful And Cost Effective Data On Impacts From Stormwater Runoff, Robert Johnston, Michelle Aylward, Gunther Rosen, Jonathan Strivens, Nicholas Schlafer, Jill M. Brandenberger, Nicholas Hayman, Jason Belden, Marienne Colvin, Heather Jennings, Matt Jabloner, Paul Caswell

Salish Sea Ecosystem Conference

In many cases stormwater compliance monitoring is labor intensive, expensive, and largely unsuccessful in providing the data needed to support stormwater management goals. In addition, data from manual grab sampling and automated composite sampling are rarely collected in a manner that provides the information required to identify sources of contamination, evaluate the effectiveness of Best Management Practices, and inform effective decision making. Furthermore, monitoring is often driven by the need to meet low concentration benchmarks for metals and other constituents that do not take into account loading into the receiving waters, resulting in arbitrary monitoring requirements (monthly or seasonally) that …

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Assessing The Impacts Of Toxic Mixtures Over A Broad Geographic Scale: Challenges And First Steps, David Hugh Baldwin, Julann A. Spromberg, Jessica I. Lundin, Cathy A. Laetz, Nathaniel L. Scholz Apr 2018

Assessing The Impacts Of Toxic Mixtures Over A Broad Geographic Scale: Challenges And First Steps, David Hugh Baldwin, Julann A. Spromberg, Jessica I. Lundin, Cathy A. Laetz, Nathaniel L. Scholz

Salish Sea Ecosystem Conference

Assessing the risks posed by chemical mixtures is a complex process. Ideally, details are available on exposure (e.g. which chemicals and what concentrations) and effects (e.g. mechanisms of action and toxicity data). This can be challenging even for a single location and time such as a lab or field site. Ecological risk assessments often need to cover much larger scales such as an entire watershed or a wide-ranging species. This increase in scale substantially increases the complexity. Thousands of chemicals in use lead to potential environmental mixture exposures, including pesticide runoff and municipal wastewater discharges. At the landscape scale the …

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Assessing Bulkhead Removal And Shoreline Restoration Using Boat-Based Lidar, George M. Kaminsky, Hannah Drummond, Heather M. Weiner, Diana Mccandless, Hacking Amanda Apr 2018

Assessing Bulkhead Removal And Shoreline Restoration Using Boat-Based Lidar, George M. Kaminsky, Hannah Drummond, Heather M. Weiner, Diana Mccandless, Hacking Amanda

Salish Sea Ecosystem Conference

The Washington State Department of Ecology performed before and after boat-based lidar surveys of a shoreline restoration project involving the removal of ~800 feet of armoring from the base of a historic feeder bluff at Edgewater Beach, along Eld Inlet in South Puget Sound. As part of the restoration project, 700 feet of bulkheads, two rock revetments, a large wood and rock groin, and several large boulders were removed or realigned from the site in fall 2016. Removal of the armoring is expected to reconnect the historic feeder bluff at the updrift end of the project site with the adjacent …

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