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Articles 391 - 420 of 432
Full-Text Articles in Life Sciences
Skagit Delta Alternatives Analysis: Using Output From The Salish Sea Hydrodynamic Model To Quantify Benefits And Impacts Of Restoration Project Concepts, Jenna Friebel, Jenny Lynn Baker, Polly Hicks
Skagit Delta Alternatives Analysis: Using Output From The Salish Sea Hydrodynamic Model To Quantify Benefits And Impacts Of Restoration Project Concepts, Jenna Friebel, Jenny Lynn Baker, Polly Hicks
Salish Sea Ecosystem Conference
The Skagit Hydrodynamic Model Project was initiated by the Farms, Fish, and Flood Initiative (3FI) to conduct a landscape-scale alternative analysis in the Skagit River delta region. Twenty-three proposed restoration projects were assessed based on a number of quantitative indicators identified by representatives from each interest (Farm, Fish, and Flood). The study area focused on the Skagit River delta downstream of Mount Vernon, Washington. This reach of the Skagit River is tidally influenced and includes both the North Fork and South Fork distributaries, Skagit Bay, Padilla Bay, and the Swinomish Channel. The study area indirectly included approximately 55,000 acres of …
Where Have All The Forage Fish Gone? Response Of Rhinoceros Auklets To An Anomalously Poor Breeding Season, Peter Hodum, Scott F. Pearson, Tom Good
Where Have All The Forage Fish Gone? Response Of Rhinoceros Auklets To An Anomalously Poor Breeding Season, Peter Hodum, Scott F. Pearson, Tom Good
Salish Sea Ecosystem Conference
The effectiveness of using seabirds as indicators of marine conditions is predicated on the idea that focal species are sensitive to changes in environmental parameters. Species with more behavioral plasticity may be less sensitive to and presumably buffered from a wider range of environmental conditions, thereby compensating for potential perturbations in the system. Rhinoceros Auklet (Cerorhinca monocerata) breeding populations in Washington State typically show little interannual variability in reproductive parameters, suggesting that they are relatively insensitive to the range of conditions that they typically experience. However, in 2016, we documented a highly anomalous breeding season for Rhinoceros Auklets on Protection …
Shoreline Armor Removal: Challenges And Solutions To Working With Private Property Owners, Lisa Kaufman
Shoreline Armor Removal: Challenges And Solutions To Working With Private Property Owners, Lisa Kaufman
Salish Sea Ecosystem Conference
Shoreline armoring is a pressure on the nearshore ecosystem altering a variety of sediment and biological processes which in turn alter the structure and function of the nearshore ecosystem. It is also a subject that elicits an emotional response from landowners concerned about the stability of their shoreline property in the face of sea level rise and increasing storm surge. The Northwest Straits Foundation and its partners have been engaging with shoreline landowners to encourage behavior change through education, outreach, and incentives that remove or reduce the barriers for consideration of alternatives to hard armor. This presentation will highlight the …
A Gis Solution To Evaluating Remedial Alternatives In Sediment Remediation And Recovery, Leon M. Delwiche
A Gis Solution To Evaluating Remedial Alternatives In Sediment Remediation And Recovery, Leon M. Delwiche
Salish Sea Ecosystem Conference
NewFields supports the Washington State Department of Ecology (Ecology) with sediment issues related to cleanup in various ports and harbors in Puget Sound, Washington. To be compliant with Ecology’s regulations, sites must attain sediment cleanup levels (SCLs) for hazardous substances within a reasonable timeframe through a combination of active remediation and natural recovery. To derive optimal site cleanup scenarios compliant with regulations a methodology was needed to estimate the spatial and temporal extent of remediation. A GIS-based sediment remediation/recovery model was designed using ESRI ArcGIS Model Builder. The model incorporates the SEDCAM sediment attenuation model and analytical results derived from …
Recognizing And Integrating Wildlife As Elwha Restoration Agents, John F. Mclaughlin, Kim Sager-Fradkin, Kurt Jenkins, Rebecca Mccaffery, Patti Happe
Recognizing And Integrating Wildlife As Elwha Restoration Agents, John F. Mclaughlin, Kim Sager-Fradkin, Kurt Jenkins, Rebecca Mccaffery, Patti Happe
Salish Sea Ecosystem Conference
Ecosystem restoration involving large dam removal spans large spatial extents, long time scales, and diverse societal constituencies. Restoration success requires collaboration among partner organizations. Success also can be facilitated by integrating components and processes of the ecosystem itself in restoration planning and practice. We review early and future roles of wildlife in restoration of valleys flooded by Elwha dams, with implications for dam removals on other rivers. Detecting early wildlife responses depended on baseline inventories prior to dam removal, followed by monitoring during and after dam removal. Pre-removal studies revealed patterns of small and mid-sized mammal occupancy, bear movement, amphibian …
Distribution Of Paralytic Shellfish Toxins In Whole And Partial Butter Clams And Comparison To Traditional Preparation Methods, Misty Peacock, Rosa Hunter, Marco Hatch
Distribution Of Paralytic Shellfish Toxins In Whole And Partial Butter Clams And Comparison To Traditional Preparation Methods, Misty Peacock, Rosa Hunter, Marco Hatch
Salish Sea Ecosystem Conference
The Salish Sea is home to numerous shellfish species which are harvested for commercial, recreational, subsistence, and cultural uses. Shellfish bioaccumulate biotoxins which can cause harm to human health. Paralytic shellfish toxins (PSTs) and Alexandrium spp., the marine phytoplankton that produce them, are regularly present in the Salish Sea, with the earliest written record from 1793. Indigenous people have experienced the effects of PSTs and other biotoxins for millennia. Traditional Indigenous knowledge and practices used to reduce biotoxin exposure include seasonal timing of harvest, observation of wildlife, and shellfish preparation methods. To further reduce the risk of shellfish poisoning, Coast …
Salmon Farms: Are We Making Progress, Alexandra Morton
Salmon Farms: Are We Making Progress, Alexandra Morton
Salish Sea Ecosystem Conference
Commercial finfish aquaculture has endured a turbulent thirty years since its arrival in British Columbia. The international record on the state of wild salmonid populations exposed to salmon farms is not encouraging as there is no region where salmon farming and stable wild salmonid populations coexist. The industry has made changes as it matures, reporting better siting, sea lice control and vaccines. However at the same time the number of fish per farm has risen to 1.7 million, adjacent commercial fisheries are largely closed, orca are increasing failing to carry offspring full term and First Nations are without food fish. …
Apex Predator Behaviour In A Changing Salish Sea: Determining The Role Bald Eagle Foraging Behaviour Plays In Nutrient Cycling And Terrestrial Food Webs Under Diminishing Salmon Populations, Kristen Walters, Ron Ydenberg, John Reynolds
Apex Predator Behaviour In A Changing Salish Sea: Determining The Role Bald Eagle Foraging Behaviour Plays In Nutrient Cycling And Terrestrial Food Webs Under Diminishing Salmon Populations, Kristen Walters, Ron Ydenberg, John Reynolds
Salish Sea Ecosystem Conference
The semelparous salmonid species are the ecological foundation of Pacific Northwest coastal ecosystems, which span across the international border to encompass the Salish Sea. The annual return of salmonids to their natal streams and decomposition of their carcasses deposits marine-derived nutrients into freshwater ecosystems, which are integral to food web dynamics, nutrient cycling and habitat quality. Bald eagles (Haliaeetus leucocephalus) are apex predators that congregate along riverbanks to scavenge accumulated carcasses, which results in individuals using piracy to steal food items from others. Winners fly to nearby trees to consume carcasses, which are dropped to the forest floor and decomposed …
Water Quality Effects Of Fish Habitat Restoration At Lone Tree Creek, Nicole Casper, Shannon M. Buckham
Water Quality Effects Of Fish Habitat Restoration At Lone Tree Creek, Nicole Casper, Shannon M. Buckham
Salish Sea Ecosystem Conference
Lone Tree Creek is located on the Swinomish Indian Tribal Community (SITC) Reservation. The creek’s watershed includes pocket estuary habitat, discharges over shellfish beds, an important resource for the Swinomish People, and flows into northern Skagit Bay. In 2006, extensive creek restoration replaced culverts, restored tidal influence to the pocket estuary, and planted riparian buffers, successfully restoring rearing habitat for juvenile Chinook salmon. Beyond fish habitat benefits, SITC wanted to assess long-term restoration effects on creek water quality and its associated pocket estuary, lagoon and bay. Water quality monitoring for conventional parameters and bacteria spanned 1997-2016 (10 years pre- and …
Policy, Science, Economics And Culture At A Crossroads: Restoring The Deschutes River Estuary, Dave Peeler, Sue Patnude
Policy, Science, Economics And Culture At A Crossroads: Restoring The Deschutes River Estuary, Dave Peeler, Sue Patnude
Salish Sea Ecosystem Conference
The potential restoration of the Deschutes Estuary in South Puget Sound has raised a unique set of disparate policy, scientific, economic and cultural interests and perspectives. The Deschutes River Estuary historically provided habitat for an abundance of shellfish and a large estuarine area for migrating salmonids at the southern extreme of Puget Sound. In 1951 the State constructed a dam across the estuary, totally transforming the estuary and creating Capitol Lake, a freshwater body. The dam also provided a transportation route to West Olympia across Budd Inlet. Creation of the lake also transformed the habitat, hydrology and water quality of …
Response Of Salish Sea Circulation And Water Quality To Climate Change And Sea Level Rise, Wenwei Xu, Tarang Khangaonkar, Karthik Balaguru, Ben Cope, Jeffrey Arnold
Response Of Salish Sea Circulation And Water Quality To Climate Change And Sea Level Rise, Wenwei Xu, Tarang Khangaonkar, Karthik Balaguru, Ben Cope, Jeffrey Arnold
Salish Sea Ecosystem Conference
There is much interest in the Pacific Northwest community and water quality management agencies to better understand and predict long term changes in the Salish Sea water quality given periodic occurrences of hypoxia and evidence of coastal acidification. However, the projected interaction of riverine and estuarine systems under potential future climate-change scenarios is not well characterized in the Salish Sea area. In this study, the Salish Sea Model of circulation and water quality developed using FVCOM-ICM model was applied to provide insights on how estuarine/nearshore environments may be impacted in the future. It serves as a proof-of-concept assessment of the …
Mortality Risk And Social Network Position In Southern Resident Killer Whales (Orcinus Orca): Sex Differences And The Importance Of Salmon Abundance, Sam Ellis, Daniel Franks, Stuart Nattrass, Michael Cant, Michael Weiss, Deborah Giles, Kenneth C. Balcomb, Darren Croft
Mortality Risk And Social Network Position In Southern Resident Killer Whales (Orcinus Orca): Sex Differences And The Importance Of Salmon Abundance, Sam Ellis, Daniel Franks, Stuart Nattrass, Michael Cant, Michael Weiss, Deborah Giles, Kenneth C. Balcomb, Darren Croft
Salish Sea Ecosystem Conference
An individual's ecological environment affects its mortality risk, which in turn has fundamental consequences for life-history evolution and population viability. In many species, social relationships are likely to be an important component of an individual's environment, and therefore mortality risk. Here, we examine the relationship between social position and mortality risk in Southern resident killer whales (Orcinus orca) using over three decades of social and demographic data. We find that the social position of male, but not female, killer whales in their social unit predicts their mortality risk. More socially integrated males have a significantly lower risk of mortality than …
Engineering Sustainable Shorelines: An Evaluation Framework, Jessica Wilson, John Readshaw, Cliff Robinson, Luke Sales, Bob Weir
Engineering Sustainable Shorelines: An Evaluation Framework, Jessica Wilson, John Readshaw, Cliff Robinson, Luke Sales, Bob Weir
Salish Sea Ecosystem Conference
Over the past century, many of the shorelines in the Salish Sea have undergone a transformation from natural to armoured. In response, there is now a significant push to use soft solutions, such as gravel beaches and vegetation, to try to mitigate effects on the natural environment. While in many areas soft solutions are entirely appropriate, in others they do not provide adequate protection from erosion or flooding. This presentation explores the idea that a one-size-fits-all solution is insufficient, and outlines a novel evaluation framework to assess the feasibility of shoreline protection works using 11 environmental and engineering performance indicators. …
Applying The Tools In The Marine Shoreline Design Guidelines (Msdg) To Select Marine Bank Protection Techniques, Corey Morss, Padraic Smith
Applying The Tools In The Marine Shoreline Design Guidelines (Msdg) To Select Marine Bank Protection Techniques, Corey Morss, Padraic Smith
Salish Sea Ecosystem Conference
The Marine Shoreline Design Guidelines (MSDG) was released four years ago to describe coastal process generally, site analysis, selection of appropriate shore protection, and design as well as if bank protection was needed at all. WDFW encourages use of the MSDG to assure the range of options are considered, specific to the characteristics of the site. As a means of continuing to support MSDG as a design guideline, and helping to familiarize non-designers with its concepts WDFW will develop and deliver a series of collaborative workshops, training sessions, and technical assistance for both design and non-design professionals and the restoration …
Evaluating Anthropogenic Threats To Endangered Killer Whales To Inform Effective Recovery Plans, Robert Lacy, Rob Williams, Erin Ashe, Chris Clark, Kenneth C. Balcomb, Lauren Brent, Daren Croft, Deborah Giles, Paul C. Paquet, Misty Macduffee
Evaluating Anthropogenic Threats To Endangered Killer Whales To Inform Effective Recovery Plans, Robert Lacy, Rob Williams, Erin Ashe, Chris Clark, Kenneth C. Balcomb, Lauren Brent, Daren Croft, Deborah Giles, Paul C. Paquet, Misty Macduffee
Salish Sea Ecosystem Conference
Understanding cumulative effects of multiple threats is key to guiding effective management to conserve endangered species. The critically endangered, Southern Resident killer whale population of the northeastern Pacific Ocean provides a data-rich case to explore anthropogenic threats on population viability. Primary threats include: limitation of preferred prey, Chinook salmon; anthropogenic noise and disturbance, which reduce foraging efficiency; and high levels of stored contaminants, including PCBs. We constructed a population viability analysis to explore possible demographic trajectories and the relative importance of anthropogenic stressors. The population is fragile, with no growth projected under current conditions, and decline expected if new or …
Monitoring And Adaptation Management Of Revegetation In The Former Elwha Reservoirs, Joshua Chenoweth, Mike Mchenry
Monitoring And Adaptation Management Of Revegetation In The Former Elwha Reservoirs, Joshua Chenoweth, Mike Mchenry
Salish Sea Ecosystem Conference
Dam removal on the Elwha River exposed over 280 hectares of valley slope, terrace, and floodplain landforms covered in millions of cubic meters of sediments deposited before and during dam removal. These sediments are either extremely coarse in texture (sands, gravels and cobbles) or very fine (silt and clay) and range in depth from 0.5 to 20 meters. This unprecedented condition dictated an adaptive management approach to revegetation. A seven-year revegetation plan that included over 90 permanent plots monitored annually was implemented to provide management with insight into natural and managed revegetation progress in these distinctly different sediment surfaces. With …
Estimating River Flows Across Basins Using Water Isotopes, Lillian Mcgill, Ashley E. Steel, Renee J. Brooks
Estimating River Flows Across Basins Using Water Isotopes, Lillian Mcgill, Ashley E. Steel, Renee J. Brooks
Salish Sea Ecosystem Conference
Global warming is expected to dramatically alter the timing and quantity of water within the nation’s river systems; however, these impacts will be heterogeneous both within river basins and across regions. A detailed understanding of the spatial and temporal dynamics of water sources across river networks is therefore central to managing the impacts of climate change. Stable isotopes of water (2H:1H & 18O:16O) provide an emerging method for elucidating the contributions of varying water sources to rivers. Because the stable isotope composition of precipitation varies geographically, variation in the stable isotope composition of river water indicates the volume-weighted integration of …
Application Of Salish Sea Model: Water Quality Improvement Through Anthropogenic Nutrient Reductions, Anise Ahmed
Application Of Salish Sea Model: Water Quality Improvement Through Anthropogenic Nutrient Reductions, Anise Ahmed
Salish Sea Ecosystem Conference
Salish Sea includes a network of coastal waterways spanning the southwest British Columbia (Canada) and northwest Washington State (USA) and includes the major waterbodies, the Strait of Georgia, the Strait of Juan de Fuca and Puget Sound. The Salish Sea Model was developed by PNNL in cooperation with Ecology based on the unstructured FVCOM model for hydrodynamics and the CE-QUAL-ICM model for water quality. The model is forced by river and wastewater inflows, tides, wind and solar radiation. The land based freshwater inputs include almost 100 wastewater plants (municipal and industrial) as well as another 100 or so watershed inflows …
Pcb And Pbde Levels In Southern And Northern Resident Killer Whales: Update On Contaminant Levels And Related Health Effects, Marie Noel, Gina Maria Ylitalo, Brad Hanson, Jared R. Towers, Peter Ross
Pcb And Pbde Levels In Southern And Northern Resident Killer Whales: Update On Contaminant Levels And Related Health Effects, Marie Noel, Gina Maria Ylitalo, Brad Hanson, Jared R. Towers, Peter Ross
Salish Sea Ecosystem Conference
Salish Sea’s killer whale populations are among the most contaminated marine mammals in the world and face risks related to the effects of polychlorinated biphenyls (PCBs) and related contaminants such as polybrominated diphenylethers (PBDEs). While PCBs have long been banned, they continue to present toxic risks to marine mammals, along with a number of other, emerging persistent, bioaccumulative and toxic (PBT) contaminants. Since PBTs have been identified as a threat to the recovery of resident killer whale populations under the auspices of the US Endangered Species Act and the Canadian Species at Risk Act (SARA), documenting the presence, trends and …
Reanalysis Of Continuous Shellfish Monitoring Data In Pursuit Of Temporal And Spatial Patterns Of Paralytic Shellfish Toxins In The Puget Sound/Salish Sea, Margaret L. Taylor, Erika Mcphee-Shaw, Stephanie K. Moore, Cheryl Greengrove
Reanalysis Of Continuous Shellfish Monitoring Data In Pursuit Of Temporal And Spatial Patterns Of Paralytic Shellfish Toxins In The Puget Sound/Salish Sea, Margaret L. Taylor, Erika Mcphee-Shaw, Stephanie K. Moore, Cheryl Greengrove
Salish Sea Ecosystem Conference
Harmful algal blooms (HABs) are of growing concern on the West Coast of North America. The dinoflagellate Alexandrium catanella is known to produce toxins that have the potential to concentrate in shellfish and, when consumed by humans or marine mammals, may result in Paralytic Shellfish Poisoning (PSP) leading to illness or death. In Puget Sound, the Washington State Department of Health (WDOH) collects and tests shellfish samples to protect the health and safety of shellfish consumers as well as the livelihood of the extensive local shellfish industry. Such data have been collected since the 1950s. We analyze data from 2003 …
Boundary Bay Ambient Monitoring Program, Carrie Hightower
Boundary Bay Ambient Monitoring Program, Carrie Hightower
Salish Sea Ecosystem Conference
Metro Vancouver Regional District’s (MVRD’s) Integrated Liquid Waste and Resource Management Plan (ILWRMP) includes a regulatory requirement to conduct ambient monitoring programs to assess, evaluate and forecast the effects of wastewater and stormwater discharges on the receiving environments. The Boundary Bay Ambient Monitoring Program (BBAMP) was initiated in 2009, in partnership with the Ministry of Environment, municipalities of Surrey, Delta and White Rock. Currently, the City of Surrey conducts monitoring of the upland fresh water conditions in tributaries and rivers that discharge into the bay while Metro Vancouver conducts marine monitoring in the bay. The fresh water and marine monitoring …
River And Wastewater Effluent Nutrient Inputs Into The Salish Sea Model, Teizeen Mohamedali, Anise Ahmed, Sheelagh Mccarthy
River And Wastewater Effluent Nutrient Inputs Into The Salish Sea Model, Teizeen Mohamedali, Anise Ahmed, Sheelagh Mccarthy
Salish Sea Ecosystem Conference
The Salish Sea Model was developed by Pacific Northwest National Laboratories in collaboration with the Washington State Department of Ecology. The model is being used to evaluate the relative effects of human nutrient inputs and climate influences on the occurrence of low dissolved oxygen (DO) levels throughout the Salish Sea, with a focus on evaluating water quality in Puget Sound. Developing an inventory of point and nonpoint source nutrient inputs entering the Salish Sea is essential to the model’s development. This presentation will present some significant updates to nutrient inputs developed for the Salish Sea Model from wastewater treatment plants …
Some Like It Hot: Using Citizen Science To Identify Marine Bird Hotspots In Puget Sound, Timothy Jones, Scott F. Pearson, Julia Parrish, Toby Ross, Peter Hodum, Eric John Ward, Jennifer Lang, Adam Sedgley
Some Like It Hot: Using Citizen Science To Identify Marine Bird Hotspots In Puget Sound, Timothy Jones, Scott F. Pearson, Julia Parrish, Toby Ross, Peter Hodum, Eric John Ward, Jennifer Lang, Adam Sedgley
Salish Sea Ecosystem Conference
Puget Sound, situated in the southern portion of the Salish Sea, supports approximately 172 marine bird species that face a multitude of threats, ranging from chronic oiling to entanglement in derelict fishing gear. As local population numbers shift due to both intrinsic and extrinsic forcing (e.g., on the breeding grounds), understanding the pattern of species' use of habitats and locations across the Sound can inform conservation planning. Using data collected by the Puget Sound Seabird Survey (PSSS) - a citizen science program that collects information on the abundance and distribution of marine birds in the nearshore environment throughout Puget Sound …
Planning, Implementation, And Monitoring Pacific Salmonid Recovery Following The Removal Of Two Hydroelectric Dams On Washington's Elwha River, Roger J. Peters, Jeff Duda, George Pess, Martin Liermann, Sam Brenkman, Pat Crain, Brian Winter, Mike Mchenry, Joseph H. Anderson, Tim Randle
Planning, Implementation, And Monitoring Pacific Salmonid Recovery Following The Removal Of Two Hydroelectric Dams On Washington's Elwha River, Roger J. Peters, Jeff Duda, George Pess, Martin Liermann, Sam Brenkman, Pat Crain, Brian Winter, Mike Mchenry, Joseph H. Anderson, Tim Randle
Salish Sea Ecosystem Conference
The removal of Elwha and Glines Canyon dams on the Elwha River is the largest existing dam removal project in the United States. Project planning, implementation, and monitoring have occurred over 30 years and has required diverse technical expertise. Because of the size and nature of the project—two high-head dams releasing massive amounts of sediment into the river, estuary, and nearshore ecosystem—the project was unprecedented and required a great deal of technical expertise to plan, execute, and monitor. The relative success of this project required effective collaboration among individuals and organizations with varying missions. Individuals with diverse technical expertise (i.e., …
River Otters Of The Green-Duwamish: Biomonitors Of Ecological Health, Michelle Wainstein, Fred Koontz, Bobbi Miller, Gina Maria Ylitalo, Bernadita F. Anulacion, Daryle Boyd, Sandra O’Neill, Philippe Thomas, Cornelya Klutsch
River Otters Of The Green-Duwamish: Biomonitors Of Ecological Health, Michelle Wainstein, Fred Koontz, Bobbi Miller, Gina Maria Ylitalo, Bernadita F. Anulacion, Daryle Boyd, Sandra O’Neill, Philippe Thomas, Cornelya Klutsch
Salish Sea Ecosystem Conference
River otters (Lontra canadensis) are apex predators that play an important role in aquatic ecosystems. They accumulate contaminants via their diet of fish and invertebrates, potentially serving as biomonitors of watershed health. In summer and fall 2016, we collected 33 otter scats from sites along the Green-Duwamish River, ranging from river miles 0-54. River miles 0-5 represent the Lower Duwamish Waterway (LDW), a U.S. Superfund site slated for a 17-year remediation. Concentrations of polychlorinated biphenyls (PCBs) at sites in the LDW were 9.1 and 19.3 mg/kg (geometric means, lipid weight) - above the reported threshold value of 9 mg/kg associated …
Geomorphic Challenges To Restoring Puget Sound Beaches, Hugh Shipman
Geomorphic Challenges To Restoring Puget Sound Beaches, Hugh Shipman
Salish Sea Ecosystem Conference
Beaches constitute more than 50% of Puget Sound’s 4000 km shoreline. More than a quarter are armored or buried under fill and many others have been impacted indirectly by changes to adjacent shorelines and to sediment transport regimes. Restoring these beaches typically involves removing bulkheads and groins, excavating historic fill, replacing lost sediment, and replumbing tidal inlets and stream mouths. We often emphasize process-based restoration, but for beaches, what does this mean? Geomorphic processes operating on beaches include erosion, deposition, overwash, sediment supply and transport, stream flow, and shoreline migration. These physical processes in turn impact ecosystems by shaping the …
Comparison Of Alexandrium Spp. Surface Sediment Cyst Maps From Quartermaster Harbor In 2007 And 2017, Cheryl Greengrove, Julie Masura, Thanh-Thuy Nguyen, Mitchell Schatz
Comparison Of Alexandrium Spp. Surface Sediment Cyst Maps From Quartermaster Harbor In 2007 And 2017, Cheryl Greengrove, Julie Masura, Thanh-Thuy Nguyen, Mitchell Schatz
Salish Sea Ecosystem Conference
Quartermaster Harbor (QMH), in central Puget Sound, has historically been a hotspot for the occurrence of the toxic dinoflagellate Alexandrium spp. and associated summer shellfish bed closures. Alexandrium spp. overwinters as cysts in the sediment and germinates into swimming vegetative cells during the summer when conditions are right. Alexandrium spp. produces neurotoxins which can be concentrated in the tissue of filter-feeding shellfish, which in turn can be fatal to humans if ingested. In 2005, the first Puget Sound wide surface sediment cyst mapping survey found QMH to have the highest concentration of Alexandrium spp. cysts in the sound. A more …
Sightings Of Southern Resident Killer Whales In The Salish Sea 1976-2014, Shawn Larson, Jennifer Olsen, Richard Osborne
Sightings Of Southern Resident Killer Whales In The Salish Sea 1976-2014, Shawn Larson, Jennifer Olsen, Richard Osborne
Salish Sea Ecosystem Conference
Southern Resident Killer Whales (SRKWs) or orcas, Orcinus orca, are resident year round in the Salish Sea, the inland waterways of Washington State and Southern British Columbia. The Whale Museum (TWM) has been collecting opportunistic sightings reports on SRKWs since 1976 with a goal of providing managers and regulatory agencies with reliable spatial data on SRKWs. Information in this database comes from five identified killer whale sighting sources and is systematically evaluated for accuracy before integration into the data set. To date, TWM sighting database has documented a total of 83,428 SRKW sightings in the Salish Sea. Sightings are concentrated …
3d Hydrodynamic Modeling Of Lower Fraser River, Shaheli Masoom, Li Gu
3d Hydrodynamic Modeling Of Lower Fraser River, Shaheli Masoom, Li Gu
Salish Sea Ecosystem Conference
3-D Hydrodynamic Modelling of Lower Fraser River Shaheli Masoom and Li Gu Environmental Management and Quality Control Division, Liquid Waste Services Department, Metro Vancouver, Burnaby B.C., Canada Email: shaheli.masoom@metrovancouver.org; li.gu@metrovancouver.org Abstract Lower Fraser River, the largest fresh water inflow into the Salish Sea, receives discharges from the urban area of the Metro Vancouver region, along with treated effluent from three of Metro Vancouver Regional District’s (MVRD) wastewater treatment plants. The complex dynamics of this estuarine river plays a crucial role in the fate and effect of these liquid discharges. In particular, the mixing of fresh river water with dense saline …
Comprehensive Data Management For An Ocean Observatory: Onc's Oceans 2.0, Richard Dewey, Benoit Pirenne, Reyna Jenkyns
Comprehensive Data Management For An Ocean Observatory: Onc's Oceans 2.0, Richard Dewey, Benoit Pirenne, Reyna Jenkyns
Salish Sea Ecosystem Conference
Ocean Networks Canada operates several comprehensive cabled ocean networks and a suite of single-point marine observing systems across Canada. Data flow in real-time from hundreds of sensors, installed beneath the ocean bottom, though the water column, and at the ocean surface. ONC has built a complimentary data management system, Oceans 2.0 that allows for real-time acquisition, secure storage, data exploration, and data product delivery. Key elements of the Oceans 2.0 data management system will be high-lighted, with a focus on best practices and lessons learned.