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Full-Text Articles in Life Sciences
Lessons From Long Time-Series Of Benthic Invertebrate Communities In The Southern Salish Sea, And An Expansion Of Parameters To Assess Nutrient Loading And Climate Change Pressures, Valerie Partridge, Margaret Dutch, Sandra Weakland, Dany Burgess, Angela Eagleston
Lessons From Long Time-Series Of Benthic Invertebrate Communities In The Southern Salish Sea, And An Expansion Of Parameters To Assess Nutrient Loading And Climate Change Pressures, Valerie Partridge, Margaret Dutch, Sandra Weakland, Dany Burgess, Angela Eagleston
Salish Sea Ecosystem Conference
Changes in habitat and benthic invertebrates indicate responses of the ecosystem to stressors. Since 1989, the Washington State Department of Ecology has monitored sediments and benthic invertebrate communities annually at ten sentinel stations. This is a unique and important dataset, providing yearly insights into benthic community structure and abundance cycles of individual species. Except where events destabilized the habitats and communities, the sediments at these ten long-term stations, and the invertebrate communities inhabiting them, have largely remained stable over time, though with some drift and cycles in species composition and abundance. A few of these long-term stations, however, have experienced …
Potential Interactions Of Sea Level Rise And Sedimentation In The Lower Puyallup River, Jeff Parsons
Potential Interactions Of Sea Level Rise And Sedimentation In The Lower Puyallup River, Jeff Parsons
Salish Sea Ecosystem Conference
Sea level rise and sedimentation have both been documented to contribute to future flooding in the densely developed Lower Puyallup River valley. However, their impacts have only been analyzed in isolation. In the Lower Puyallup River, these processes will interact. As sea level rises, the salt wedge, which is often flushed from leveed river channel, will be increasingly located in the leveed river channel, exacerbating sedimentation issues. Since the reach is no longer dredged, this sedimentation will decrease conveyance and increase the risk of the flooding over time. The interactions of the salt wedge and sedimentation will be nonlinear and …
Microplastics Contamination In Blue Mussels (Mytilus Edulis (L.)) And Marine Sediments Along The Coast Of British Columbia, Canada, Megane Neauport, Marie Noel, Anahita Etemadifar, Peter Ross
Microplastics Contamination In Blue Mussels (Mytilus Edulis (L.)) And Marine Sediments Along The Coast Of British Columbia, Canada, Megane Neauport, Marie Noel, Anahita Etemadifar, Peter Ross
Salish Sea Ecosystem Conference
Contamination of marine ecosystems with microplastics (plastic particles ≤ 5mm) is now recognized as a serious and growing threat to sealife. One major concern is that invertebrates, fish, seabirds and marine mammals mistake plastic for food, leading to suffocation, blockage of the gut and/or malnutrition. Microplastics have been detected in sediment around the world, highlighting the propensity of this matrix to serve as a sink. Due to their extensive filter-feeding activity, marine bivalves are directly exposed to this structural pollutant. In the present study, we investigate microplastics contamination in nearshore subtidal sediment and mussel samples collected at 43 sites along …
Source, Transport, And Age Of Sediment From Cascade Volcano Watersheds To The Nearshore: Insights For Contaminant And Ecological Studies, Renee Takesue, Kathy Conn, Margaret Dutch
Source, Transport, And Age Of Sediment From Cascade Volcano Watersheds To The Nearshore: Insights For Contaminant And Ecological Studies, Renee Takesue, Kathy Conn, Margaret Dutch
Salish Sea Ecosystem Conference
Inputs of sediment and sediment-bound contaminants from urbanized watersheds to the nearshore region are a growing concern as coastal populations increase around the Salish Sea and worldwide. Geochemical sourcing and aging of nearshore sediment is one potential way to: a) distinguish land-derived sediment in nearshore environments, b) gain insights about how sediment and contaminants are redistributed, and c) determine how recently they were deposited. Sediments from Cascade volcanoes have distinct geochemical compositions that allow discrimination between land-derived (volcanic) and marine (lowland) sediment. As sediment is transported by rivers to the nearshore, it adsorbs particle-reactive contaminants and short-lived radionuclides, and the …
Spatial Distribution Of Benthic Macroinvertebrate Biomass In Puget Sound: Establishing A Baseline, Dany Burgess, Angela Eagleston, Margaret Dutch, Valerie Partridge, Sandra Weakland
Spatial Distribution Of Benthic Macroinvertebrate Biomass In Puget Sound: Establishing A Baseline, Dany Burgess, Angela Eagleston, Margaret Dutch, Valerie Partridge, Sandra Weakland
Salish Sea Ecosystem Conference
Since 1989, Ecology’s Marine Sediment Monitoring Program has collected data to assess the condition of Puget Sound’s sediment-dwelling invertebrate communities (benthos). These long-term data reveal declines in benthos abundance and taxa richness in parts of Puget Sound that do not appear to be correlated with concentrations of chemical contaminants in the sediment. In 2016, a biomass and size classification component was added to the suite of benthic community indices analyzed, as part of a large-scale program redesign intended to shed more light on alternate causes of declining benthos, such as climate change and nutrient enrichment. Benthic invertebrate biomass not only …
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 …