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Articles 1 - 15 of 15
Full-Text Articles in Physical Sciences and Mathematics
Interactive Effects Of Ocean Acidification And Ocean Warming On Pacific Herring (Clupea Pallasi) Early Life Stages, Brooke Love, Cristina Villalobos, M. Brady Olson
Interactive Effects Of Ocean Acidification And Ocean Warming On Pacific Herring (Clupea Pallasi) Early Life Stages, Brooke Love, Cristina Villalobos, M. Brady Olson
Salish Sea Ecosystem Conference
The synergy of ocean acidification and ocean warming may lead to negative marine organism responses not apparent under single stressors. While adult fish are effective acid-base regulators, and presumably less affected by environmental stressors, early life stages may be more susceptible. Pacific herring are ecologically and economically important forage fish, native to the U.S. Pacific Northwest (PNW). However, the herring populations in the PNW have experienced reductions in stock abundance. This study focused on the combined effects of ocean acidification and ocean warming on Pacific herring embryo and larval life stages. Pacific herring embryos were incubated under a factorial design …
Blue Carbon: Port Of Seattle’S Kelp, Eelgrass And Shellfish Enhancement Pilot Project, Jon Sloan
Blue Carbon: Port Of Seattle’S Kelp, Eelgrass And Shellfish Enhancement Pilot Project, Jon Sloan
Salish Sea Ecosystem Conference
The Port of Seattle is working to become carbon neutral by 2050. In addition to reducing emissions, the Port’s strategy includes enhancing carbon sequestration through habitat restoration. To that end, the Port completed a study in 2017 to quantify sequestration benefits associated with different land cover and habitat types found in the Duwamish River estuary and Elliott Bay, including riparian forest, marsh, mudflat, eelgrass and kelp beds. The review determined that kelp and eelgrass – so called “blue carbon” – provide highly significant sequestration benefits. In fact, they sequester more carbon than almost any other habitat type in the world. …
Seasonal Patterns Of Estuarine Acidification In Seagrass Beds Of The Snohomish Estuary, Wa, Stephen Pacella, Cheryl A. Brown, T. Chris Mochon-Collura, George G. Waldbusser, Rochelle G. Labiosa, Burke Hales
Seasonal Patterns Of Estuarine Acidification In Seagrass Beds Of The Snohomish Estuary, Wa, Stephen Pacella, Cheryl A. Brown, T. Chris Mochon-Collura, George G. Waldbusser, Rochelle G. Labiosa, Burke Hales
Salish Sea Ecosystem Conference
Recent studies have begun to explore physical and biogeochemical mechanisms of carbonate chemistry variability in a variety of coastal habitats, including coral reefs, upwelling margins, and inland seas. To our knowledge, there have been limited mechanistic studies of annual carbonate chemistry variability in nearshore estuarine environments. Here, we present autonomous sensor and grab sample data of carbonate chemistry covering a 10 month period from two subtidal seagrass bed sites in Possession Sound, WA. Simple mass balance stoichiometric models are used to evaluate seasonal drivers of carbonate system parameters in the seagrass beds. Simulations of increasing anthropogenic carbon (Canth) burdens in …
Ameliorating Ocean Acidification: Towards A Model Relating Pco2, Irradiance And Leaf Area Index Of Zostera Marina (Eelgrass) In Padilla Bay, Wa, Tyler Tran, Brooke Love, Sylvia Yang, Cinde Donoghue
Ameliorating Ocean Acidification: Towards A Model Relating Pco2, Irradiance And Leaf Area Index Of Zostera Marina (Eelgrass) In Padilla Bay, Wa, Tyler Tran, Brooke Love, Sylvia Yang, Cinde Donoghue
Salish Sea Ecosystem Conference
In nearshore, soft-sediment habitats of the Salish Sea, eelgrass (Zostera marina L.) meadows have been identified as potential mitigators of ocean acidification (OA) because their photosynthetic activity can decrease pCO2, increase pH and provide refuge for organisms sensitive to OA. The diurnal light cycle controls photosynthetic production of eelgrass and therefore, along with tidal cycles, exerts strong controls on variations in pCO2 in nearshore environment. In this study, we investigate the carbon uptake rates for eelgrass under varying light, ambient pCO2 conditions and eelgrass densities (leaf area index). The magnitude of changes predicted based on experimentally derived photosynthetic rates, measured …
Elevated Carbon Dioxide Alters Neural Signaling And Anti-Predator Behaviors In Ocean Phase Coho Salmon (Oncorhynchus Kisutch), Chase Williams, Evan Gallagher, Andrew Dittman, Paul Mcelhany, Shallin Busch, Theo Bammler, James Macdonald
Elevated Carbon Dioxide Alters Neural Signaling And Anti-Predator Behaviors In Ocean Phase Coho Salmon (Oncorhynchus Kisutch), Chase Williams, Evan Gallagher, Andrew Dittman, Paul Mcelhany, Shallin Busch, Theo Bammler, James Macdonald
Salish Sea Ecosystem Conference
Elevated levels of CO2 have been shown to disrupt numerous neurological sensory systems in marine fish. This is of concern as Pacific salmon rely heavily on an important neurosensory system for survival, the olfactory system. In this study, we investigated the effects of elevated CO2 on a salmon olfactory driven behavior, as well as changes in neural signaling and gene expression within the peripheral and central olfactory system. Juvenile coho salmon were exposed to three different levels of CO2 for two weeks. These included a current CO2 level with a pH of 7.8, a medium CO2 level with a pH …
Variability In Water Column Respiration In Salish Sea Waters And Implications For Coastal And Ocean Acidification, Jude K. Apple, Claire Cook, Natasha R. Christman, Shauna Bjornson, J. A. (Jan A.) Newton
Variability In Water Column Respiration In Salish Sea Waters And Implications For Coastal And Ocean Acidification, Jude K. Apple, Claire Cook, Natasha R. Christman, Shauna Bjornson, J. A. (Jan A.) Newton
Salish Sea Ecosystem Conference
Water column respiration is a key driver of carbon cycling, ocean acidification, and oxygen dynamics in marine ecosystems. However, empirical estimates of the range and variability of respiration and its relative contribution to ocean acidification are seldom measured. In 2014, we began measuring respiration rates at multiple sites in the central Salish Sea (San Juan Islands, Bellingham Bay) and then initiated routine monitoring of water column respiration at multiple sites in Padilla Bay National Estuarine Research Reserve (NERR). Measurements in Padilla Bay were integrated into the well-established NERR System Wide Monitoring Program (SWMP). Our investigation revealed that 1) rates of …
From Knowledge To Action: Advancing Washington State's Strategic Response On Ocean Acidification, Julie D. Horowitz, Martha Kongsgaard
From Knowledge To Action: Advancing Washington State's Strategic Response On Ocean Acidification, Julie D. Horowitz, Martha Kongsgaard
Salish Sea Ecosystem Conference
In the five years since the Blue Ribbon Panel’s 2012 report “Ocean Acidification: From Knowledge to Action”, there have been significant scientific advances and progress on the recommended actions. The Marine Resources Advisory Council (MRAC) saw a need to re-evaluate the 2012 strategy, resulting in a 2017 Addendum to the Blue Ribbon Panel on Ocean Acidification report. The Addendum is a companion report that expands upon the 2012 work. New research emphasizes and justifies the need for more concerted efforts to combat ocean acidification as the North American west coast experiences some of the earliest and most advanced signs of …
Salish Sea Model: Ocean Acidification Module And The Response To Regional Anthropogenic Nutrient Sources, G. J. Pelletier, Laura Bianucci, Wen Long, Tarang Khangaonkar, Teizeen Mohamedali, Anise Ahmed, Cristiana Figueroa-Kaminsky, Nina Bednarsek
Salish Sea Model: Ocean Acidification Module And The Response To Regional Anthropogenic Nutrient Sources, G. J. Pelletier, Laura Bianucci, Wen Long, Tarang Khangaonkar, Teizeen Mohamedali, Anise Ahmed, Cristiana Figueroa-Kaminsky, Nina Bednarsek
Salish Sea Ecosystem Conference
Several monitoring programs indicate the presence of lower pH and related changes in carbonate system variables in the Salish Sea. This project expands the existing Salish Sea Model to evaluate carbonate system variables. This project quantifies the influences of regional nutrient sources on acidification. The model accounts for Pacific Ocean upwelled water, regional human nutrient contributions, and air emissions around the Salish Sea. This effort also identifies geographical areas and seasons experiencing greater influence from regional sources of nutrients to Salish Sea waters. Results from this effort indicate that increased dissolved inorganic nitrogen, phytoplankton biomass, and non-algal organic carbon caused …
Omega Oracle: Forecasting Estuarine Carbonate Weather, Cameron Allen, George G. Waldbusser, Burke Hales
Omega Oracle: Forecasting Estuarine Carbonate Weather, Cameron Allen, George G. Waldbusser, Burke Hales
Salish Sea Ecosystem Conference
There are serious concerns about ecological, social, and economic impacts in the Pacific Northwest due to Ocean Acidification (OA). We built a system to predict aragonite saturation state (Ω) of seawater in Netarts Bay, Oregon based on large scale forcing parameters. An artificial neural network – trained against a continuous, multiyear monitoring record of carbonate chemistry – learns a regression estimate of Ω based on seasonality, tides, and wind conditions. This approach is agnostic to the details of the underlying chemical and biological processes offering a distinct modelling perspective. The result is a conceptually simpler and more strictly empirical parameterization …
Liveocean: A Daily Forecast Model Of Biogeochemistry In Washington Marine Waters, Parker Maccready, Samantha A. Siedlecki, Ryan M. Mccabe
Liveocean: A Daily Forecast Model Of Biogeochemistry In Washington Marine Waters, Parker Maccready, Samantha A. Siedlecki, Ryan M. Mccabe
Salish Sea Ecosystem Conference
LiveOcean is a daily forecast model of ocean conditions for the coastal waters of Washington, Oregon, and Vancouver Island, as well as the Salish Sea. It is forced with realistic tides, winds, rivers, and ocean conditions. The model simulates biogeochemical properties including phytoplankton, nitrate, dissolved oxygen, dissolved inorganic carbon, and alkalinity, up to 3 days in the future. It is used for the prediction of ocean acidification events in coastal estuaries, and for harmful algal bloom events on coastal beaches. I will describe the model construction, comparisons with observations, uses, and future developments.
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
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 …
The Story So Far: An In Situ Pairing Of Chemical Oceanography And Physiology, Helen Gurney-Smith, Kayla Mohns, Caitlin Smith, Tamara Brown, Brenna Collicutt, Anne Haegert, Wiley Evans
The Story So Far: An In Situ Pairing Of Chemical Oceanography And Physiology, Helen Gurney-Smith, Kayla Mohns, Caitlin Smith, Tamara Brown, Brenna Collicutt, Anne Haegert, Wiley Evans
Salish Sea Ecosystem Conference
Climate change is a pressing environmental concern, and understanding how abiotic variation contributes to population dynamics and persistence may ultimately predict the fates of species. Ocean acidification negatively impacts a range of species, including those using calcium carbonate for shell formation such as shellfish, which are important as ecosystem engineers and for food security. While much is known about carbonate chemistry and impacts of ocean acidification on the U.S. Pacific coast, there is limited regional information in British Columbia (BC), especially in socio-economically important coastal zones for aquaculture and migrating fisheries populations. Laboratory experimentation mimicking future climate scenarios provide valuable …
Results From The Baynes Sound Environmental Intelligence Collaboration (Baseic), Wiley Evans, Darlene Winterburn, Katie Pocock, Carrie Weekes, Alex Hare
Results From The Baynes Sound Environmental Intelligence Collaboration (Baseic), Wiley Evans, Darlene Winterburn, Katie Pocock, Carrie Weekes, Alex Hare
Salish Sea Ecosystem Conference
Baynes Sound, in the northern Salish Sea, hosts more than 50% of the BC shellfish aquaculture industry, with Pacific oyster (Magallana gigas) as the dominant production species. The known vulnerability of this species to ocean acidification (OA)-driven changes in seawater chemistry – specifically through alteration in calcium carbonate (CaCO3) mineral stability, combined with periodic production problems in Baynes Sound – have led to a growing concern regarding possible contemporaneous impacts of OA in spite of lacking environmental intelligence detailing baseline conditions. In order to build our understanding of current biogeochemical patterns in this key Salish Sea setting, the BC Shellfish …
Patterns And Variability In Ocean Acidification Conditions In Puget Sound And The Strait Of Juan De Fuca, J. A. (Jan A.) Newton, Simone Alin, Beth Curry, Adrienne J. Sutton, John Mickett, Richard A. Feely, Marine Lebrec, Dana Greeley, Wendi Ruef, Andrea Fassbender, Terrie Klinger
Patterns And Variability In Ocean Acidification Conditions In Puget Sound And The Strait Of Juan De Fuca, J. A. (Jan A.) Newton, Simone Alin, Beth Curry, Adrienne J. Sutton, John Mickett, Richard A. Feely, Marine Lebrec, Dana Greeley, Wendi Ruef, Andrea Fassbender, Terrie Klinger
Salish Sea Ecosystem Conference
The Washington Ocean Acidification Center is working with NOAA and other partners to increase understanding of ocean acidification dynamics and spatial variability in the Salish Sea, and how these correlate with planktonic responses. These data are critical for assessing water quality, areas with higher or lower OA stress, and to understand effects on the food web. Two main strategies are employed; seasonal ship cruises provide spatial coverage and the ability to collect plankton, while mooring buoys provide information on mechanisms and the range of variation due to the high-resolution and constant coverage they provide. Results show a strong degree of …
Does Eelgrass Act As An Ocean Acidification Refuge For Shellfish In The Salish Sea?, Bonnie Becker, Michelle Mccartha, Micah Horwith
Does Eelgrass Act As An Ocean Acidification Refuge For Shellfish In The Salish Sea?, Bonnie Becker, Michelle Mccartha, Micah Horwith
Salish Sea Ecosystem Conference
Marine waters worldwide are becoming more acidic due to increasing atmospheric carbon dioxide levels. Changes in pH are heterogeneous in space and time and can be affected by physical and biological processes, including photosynthesis and respiration of plants and animals. Previous studies have shown that seagrass beds, which contain a large amount of plant biomass, can alter the carbonate chemistry in the immediate area, with higher pH during the day and lower pH at night. We explored the effects of this pattern on bivalve shellfish at four sites in Puget Sound and Willapa Bay. Pumped water samples were taken at …