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Articles 1 - 30 of 57
Full-Text Articles in Marine Biology
The Olympic Coast As A Sentinel: An Integrated Social-Ecological Regional Vulnerability Assessment To Ocean Acidification, Courtney Cochran
The Olympic Coast As A Sentinel: An Integrated Social-Ecological Regional Vulnerability Assessment To Ocean Acidification, Courtney Cochran
Benefits of Ocean Observing Catalog (BOOC)
Timestamp: 44862.4626207986 Email Address: courtney.cochran@noaa.gov Name: Courtney Cochran Affiliation: NOAA Affiliate (UCAR Contractor) Program Office/Division: Ocean Acidification Program Position Title: Program Specialist III Title of use case: The Olympic Coast as a Sentinel: An Integrated Social-Ecological Regional Vulnerability Assessment to Ocean Acidification Authors or Creators: Newton, J. ; Poe, M. ; Alin, S. ; Chadsey, M. ; Feely, R. ; Fradkin, S. ; Hagen, J. ; Ledford, J. ; Koehlinger, J. A. ; Schumacher, J. ; Siedlecki, S. ; Svec, R. ; Waddell, J. ; Watkinson-Schutten, M Affiliations of Authors or Creators: University of Washington Applied Physics Lab and the …
Effects Of Ph, Eelgrass, And Settlement Substrate On The Growth Of Juvenile Magallana (Crassostrea) Gigas, A Commercially Important Oyster Species, Johnny S. Roche
Effects Of Ph, Eelgrass, And Settlement Substrate On The Growth Of Juvenile Magallana (Crassostrea) Gigas, A Commercially Important Oyster Species, Johnny S. Roche
Cal Poly Humboldt theses and projects
Worsening ocean acidification (OA), resulting from ongoing absorption of atmospheric carbon dioxide (CO2) by the oceans, threatens marine life globally. Calcifying organisms, especially their early life stages, are particularly vulnerable; this includes the economically important Pacific oyster, Magallana (Crassostrea) gigas. Uptake of dissolved CO2 through photosynthesis by seagrasses, like eelgrass (Zostera marina), may benefit calcifying organisms by increasing pH and carbonate availability. I conducted laboratory and field experiments to quantify carbonate chemistry modification by eelgrass and potential mitigation of OA impacts on growth in juvenile Pacific oysters. In the laboratory experiment, daytime …
Validation Of Pilot Protocol: Damage Scoring Of Puget Sound Mollusk Shells, Lauren Doffing
Validation Of Pilot Protocol: Damage Scoring Of Puget Sound Mollusk Shells, Lauren Doffing
Environmental Science Undergraduate Theses
The Marine Sediment Monitoring Team at the Washington State Department of Ecology observed damage to mollusk shells while studying the benthic communities of Puget Sound. A pilot protocol was written to allow researchers to quantify the damage. Two researchers independently followed the protocol, including reference photos, for a set of samples collected in 2019 from an urban bay, East Possession Sound. Two scores were given to each specimen: highest-level damage and extent of highest-level damage. An additional score was given to bivalve species: rust/stain. The sets of scores were compared to determine if the protocol yielded similar values between the …
Photorespiration In Eelgrass (Zostera Marina L.): A Photoprotection Mechanism For Survival In A Co₂-Limited World, Billur Celebi-Ergin, Richard C. Zimmerman, Victoria J. Hill
Photorespiration In Eelgrass (Zostera Marina L.): A Photoprotection Mechanism For Survival In A Co₂-Limited World, Billur Celebi-Ergin, Richard C. Zimmerman, Victoria J. Hill
OES Faculty Publications
Photorespiration, commonly viewed as a loss in photosynthetic productivity of C3 plants, is expected to decline with increasing atmospheric CO2, even though photorespiration plays an important role in the oxidative stress responses. This study aimed to quantify the role of photorespiration and alternative photoprotection mechanisms in Zostera marina L. (eelgrass), a carbon-limited marine C3 plant, in response to ocean acidification. Plants were grown in controlled outdoor aquaria at different [CO2]aq ranging from ~55 (ambient) to ~2121 μM for 13 months and compared for differences in leaf photochemistry by simultaneous measurements of O2 flux and …
Late Afternoon Seasonal Transition To Dissolution In A Coral Reef: An Early Warning Of A Net Dissolving Ecosystem?, Laura Stoltenberg, Kai G. Schulz, Coulson A. Lantz, Tyler Cyronak, Bradley D. Eyre
Late Afternoon Seasonal Transition To Dissolution In A Coral Reef: An Early Warning Of A Net Dissolving Ecosystem?, Laura Stoltenberg, Kai G. Schulz, Coulson A. Lantz, Tyler Cyronak, Bradley D. Eyre
Marine & Environmental Sciences Faculty Articles
There are concerns that reefs will transition from net calcifying to net dissolving in the near future due to decreasing calcification and increasing dissolution rates. Here we present in situ rates of net ecosystem calcification (NEC) and net ecosystem production (NEP) on a coral reef flat using a slack-water approach. Up until dusk, the reef was net calcifying in most months but shifted to net dissolution in austral summer, coinciding with high respiration rates and a lower aragonite saturation state (Ωarag). The estimated sediment contribution to NEC ranged from 8 – 21 % during the day and 45 …
The Role Of Symbiotic Algae In The Acclimatization Of Oculina Arbuscula To Ocean Acidification, Erin M. Arneson
The Role Of Symbiotic Algae In The Acclimatization Of Oculina Arbuscula To Ocean Acidification, Erin M. Arneson
Electronic Theses and Dissertations
Ocean acidification (OA) caused by CO2 emissions is projected to decrease seawater pH to 7.6 by 2100. Scleractinian corals are at risk because excess H+ in seawater binds to carbonate (CO32-), reducing its availability for CaCO3 skeletons. The energy demand for skeletal growth increases as pH decreases because corals must actively purge excess H+ from their seawater sourced calcifying fluid to maintain high calcification rates. In scleractinian corals it is hypothesized that photosynthesis by symbiotic algae is critical to meet this increased energy demand. To test this hypothesis, I conducted laboratory and field …
Porewater Carbonate Chemistry Dynamics In A Temperate And A Subtropical Seagrass System, Theodor Kindeberg, Nicholas R. Bates, Travis A. Courtney, Tyler Cyronak, Alyssa Griffin, Fred T. Mackenzie, May-Linn Paulsen, Andreas J. Andersson
Porewater Carbonate Chemistry Dynamics In A Temperate And A Subtropical Seagrass System, Theodor Kindeberg, Nicholas R. Bates, Travis A. Courtney, Tyler Cyronak, Alyssa Griffin, Fred T. Mackenzie, May-Linn Paulsen, Andreas J. Andersson
Marine & Environmental Sciences Faculty Articles
Seagrass systems are integral components of both local and global carbon cycles and can substantially modify seawater biogeochemistry, which has ecological ramifications. However, the influence of seagrass on porewater biogeochemistry has not been fully described, and the exact role of this marine macrophyte and associated microbial communities in the modification of porewater chemistry remains equivocal. In the present study, carbonate chemistry in the water column and porewater was investigated over diel timescales in contrasting, tidally influenced seagrass systems in Southern California and Bermuda, including vegetated (Zostera marina) and unvegetated biomes (0–16 cm) in Mission Bay, San Diego, USA …
Will Shark Skin Dissolve Under High Co2?, Emily K. Witt
Will Shark Skin Dissolve Under High Co2?, Emily K. Witt
Scientific Communication News
No abstract provided.
Taking The Metabolic Pulse Of The World's Coral Reefs, Tyler Cyronak, Andreas J. Andersson, Chris Langdon, Rebecca Albright, Nicholas R. Bates, Ken Caldeira, Renee Carlton, Jorge E. Corredor, Rob B. Dunbar, Ian Enochs, Jonathan Erez, Bradley D. Eyre, Jean-Pierre Gattuso, Dwight Gledhill, Hajime Kayanne, David I. Kline, David A. Koweek, Coulson Lantz, Boaz Lazar, Derek Manzello, Ashly Mcmahon, Melissa Melendez, Heather N. Page, Isaac R. Santos, Kai G. Schulz, Emily Shaw, Jacob Silverman, Atsushi Suzuki, Lida Teneva, Atsushi Watanabe, Shoji Yamamoto
Taking The Metabolic Pulse Of The World's Coral Reefs, Tyler Cyronak, Andreas J. Andersson, Chris Langdon, Rebecca Albright, Nicholas R. Bates, Ken Caldeira, Renee Carlton, Jorge E. Corredor, Rob B. Dunbar, Ian Enochs, Jonathan Erez, Bradley D. Eyre, Jean-Pierre Gattuso, Dwight Gledhill, Hajime Kayanne, David I. Kline, David A. Koweek, Coulson Lantz, Boaz Lazar, Derek Manzello, Ashly Mcmahon, Melissa Melendez, Heather N. Page, Isaac R. Santos, Kai G. Schulz, Emily Shaw, Jacob Silverman, Atsushi Suzuki, Lida Teneva, Atsushi Watanabe, Shoji Yamamoto
Tyler Cyronak
Worldwide, coral reef ecosystems are experiencing increasing pressure from a variety of anthropogenic perturbations including ocean warming and acidification, increased sedimentation, eutrophication, and overfishing, which could shift reefs to a condition of net calcium carbonate (CaCO3) dissolution and erosion. Herein, we determine the net calcification potential and the relative balance of net organic carbon metabolism (net community production; NCP) and net inorganic carbon metabolism (net community calcification; NCC) within 23 coral reef locations across the globe. In light of these results, we consider the suitability of using these two metrics developed from total alkalinity (TA) and dissolved inorganic carbon (DIC) …
Permeable Coral Reef Sediment Dissolution Driven By Elevated Pco2 And Pore Water Advection, Tyler Cyronak, Isaac R. Santos, Bradley D. Eyre
Permeable Coral Reef Sediment Dissolution Driven By Elevated Pco2 And Pore Water Advection, Tyler Cyronak, Isaac R. Santos, Bradley D. Eyre
Tyler Cyronak
Ocean acidification (OA) is expected to drive the transition of coral reef ecosystems from net calcium carbonate (CaCO3) precipitating to net dissolving within the next century. Although permeable sediments represent the largest reservoir of CaCO3 in coral reefs, the dissolution of shallow CaCO3 sands under future pCO2 levels has not been measured under natural conditions. In situ, advective chamber incubations under elevated pCO2 (~800 µatm) shifted the sediments from net precipitating to net dissolving. Pore water advection more than doubled dissolution rates (1.10 g CaCO3 m−2 d−1) when compared to …
Hysteresis Between Coral Reef Calcification And The Seawater Aragonite Saturation State, Ashly Mcmahon, Isaac R. Santos, Tyler Cyronak, Bradley D. Eyre
Hysteresis Between Coral Reef Calcification And The Seawater Aragonite Saturation State, Ashly Mcmahon, Isaac R. Santos, Tyler Cyronak, Bradley D. Eyre
Tyler Cyronak
Some predictions of how ocean acidification (OA) will affect coral reefs assume a linear functional relationship between the ambient seawater aragonite saturation state (Ωa) and net ecosystem calcification (NEC). We quantified NEC in a healthy coral reef lagoon in the Great Barrier Reef during different times of the day. Our observations revealed a diel hysteresis pattern in the NEC versus Ωa relationship, with peak NEC rates occurring before the Ωa peak and relatively steady nighttime NEC in spite of variable Ωa. Net ecosystem production had stronger correlations with NEC than light, temperature, nutrients, pH, …
Drivers Of Pco2 Variability In Two Contrasting Coral Reef Lagoons: The Influence Of Submarine Groundwater Discharge, Tyler Cyronak, Isaac R. Santos, Dirk V. Erler, Damien T. Maher, Bradley D. Eyre
Drivers Of Pco2 Variability In Two Contrasting Coral Reef Lagoons: The Influence Of Submarine Groundwater Discharge, Tyler Cyronak, Isaac R. Santos, Dirk V. Erler, Damien T. Maher, Bradley D. Eyre
Tyler Cyronak
The impact of groundwater on pCO2 variability was assessed in two coral reef lagoons with distinct drivers of submarine groundwater discharge (SGD). Diel variability of pCO2 in the two ecosystems was explained by a combination of biological drivers and SGD inputs. In Rarotonga, a South Pacific volcanic island, 222Rn‐derived SGD was driven primarily by a steep terrestrial hydraulic gradient, and the water column was influenced by the high pCO2 (5501 µatm) of the fresh groundwater. In Heron Island, a Great Barrier Reef coral cay, SGD was dominated by seawater recirculation through the sediments …
Enhanced Acidification Of Global Coral Reefs Driven By Regional Biogeochemical Feedbacks, Tyler Cyronak, Kai G. Schulz, Isaac R. Santos, Bradley D. Eyre
Enhanced Acidification Of Global Coral Reefs Driven By Regional Biogeochemical Feedbacks, Tyler Cyronak, Kai G. Schulz, Isaac R. Santos, Bradley D. Eyre
Tyler Cyronak
Physical uptake of anthropogenic CO2 is the dominant driver of ocean acidification (OA) in the open ocean. Due to expected decreases in calcification and increased dissolution of CaCO3 framework, coral reefs are thought to be highly susceptible to OA. However, biogeochemical processes can influence the pCO2 and pH of coastal ecosystems on diel and seasonal time scales, potentially modifying the long‐term effects of increasing atmospheric CO2. By compiling data from the literature and removing the effects of short‐term variability, we show that the average pCO2 of coral reefs throughout the globe has increased ~3.5‐fold …
Antagonistic Effects Of Ocean Acidification And Rising Sea Surface Temperature On The Dissolution Of Coral Reef Carbonate Sediments, Daniel Trnovsky, Laura Stoltenberg, Tyler Cyronak, Bradley D. Eyre
Antagonistic Effects Of Ocean Acidification And Rising Sea Surface Temperature On The Dissolution Of Coral Reef Carbonate Sediments, Daniel Trnovsky, Laura Stoltenberg, Tyler Cyronak, Bradley D. Eyre
Tyler Cyronak
Increasing atmospheric CO2 is raising sea surface temperature (SST) and increasing seawater CO2 concentrations, resulting in a lower oceanic pH (ocean acidification; OA), which is expected to reduce the accretion of coral reef ecosystems. Although sediments comprise most of the calcium carbonate (CaCO3) within coral reefs, no in situ studies have looked at the combined effects of increased SST and OA on the dissolution of coral reef CaCO3 sediments. In situ benthic chamber incubations were used to measure dissolution rates in permeable CaCO3 sands under future OA and SST scenarios in a coral reef …
Effects Of Reduced Ph On Health Biomarkers Of The Seagrass Cymodocea Nodosa, Regan A. Mcenaney
Effects Of Reduced Ph On Health Biomarkers Of The Seagrass Cymodocea Nodosa, Regan A. Mcenaney
DePaul Discoveries
Ocean acidification is a growing problem that may affect many marine organisms in the future. Within 100 years the pH of the ocean is predicted to decrease to 7.8, from the current ocean pH of around 8.1. Using phenolic acid levels as a stress indicator as well as respiration and chlorophyll content as a measure of health, the effect of lowering pH was tested on the seagrass, Cymodocea nodosa, in a controlled environment. Plant samples, water, and soil were taken from the Bay of Cádiz, Spain, and placed in aquaria in a temperature-controlled room. One control group was left …
Ocean Change Within Shoreline Communities: From Biomechanics To Behaviour And Beyond, Brian Gaylord, Kristina M. Barclay, Brittany M. Jellison, Laura L. Jurgens, Aaron T. Ninokawa, Emily B. Rivest, Lindsey R. Leighton
Ocean Change Within Shoreline Communities: From Biomechanics To Behaviour And Beyond, Brian Gaylord, Kristina M. Barclay, Brittany M. Jellison, Laura L. Jurgens, Aaron T. Ninokawa, Emily B. Rivest, Lindsey R. Leighton
VIMS Articles
Humans are changing the physical properties of Earth. In marine systems, elevated carbon dioxide concentrations are driving notable shifts in temperature and seawater chemistry. Here, we consider consequences of such perturbations for organism biomechanics and linkages amongst species within communities.In particular,we examine case examples of altered morphologies and material properties, disrupted consumer–prey behaviours, and the potential for modulated positive (i.e. facilitative) interactions amongst taxa, as incurred through increasing ocean acidity and rising temperatures. We focus on intertidal rocky shores of temperate seas as model systems, acknowledging the longstanding role of these communities in deciphering ecological principles. Our survey illustrates the …
Oysters And Eelgrass: Potential Partners In A High Pco2 Ocean, Maya L. Groner, Colleen A. Burge, Ruth Cox, Natalie D. Rivlin, Mo Turner, Kathryn L. Van Alstyne Dr., Sandy Wyllie-Echeverria, John Bucci, Philip Staudigel, Carolyn S. Friedman
Oysters And Eelgrass: Potential Partners In A High Pco2 Ocean, Maya L. Groner, Colleen A. Burge, Ruth Cox, Natalie D. Rivlin, Mo Turner, Kathryn L. Van Alstyne Dr., Sandy Wyllie-Echeverria, John Bucci, Philip Staudigel, Carolyn S. Friedman
Shannon Point Marine Center Faculty Publications
Ocean acidification (OA) threatens calcifying organisms such as the Pacific oyster, Crassostrea gigas. In contrast, eelgrass, Zostera marina, can benefit from the increase in available carbon for photosynthesis found at a lower seawater pH. Seagrasses can remove dissolved inorganic carbon from OA environments, creating local daytime pH refugia. Pacific oysters may improve the health of eelgrass by filtering out pathogens such as Labyrinthula zosterae, which causes eelgrass wasting disease (EWD). Using a laboratory experiment, we found that co-culture of eelgrass with oysters reduced the severity of EWD. EWD was also reduced in more acidic waters, which negatively …
Thresholds And Drivers Of Coral Calcification Responses To Climate Change, Niklas Kornder, Bernhard Riegl, Joana Figueiredo
Thresholds And Drivers Of Coral Calcification Responses To Climate Change, Niklas Kornder, Bernhard Riegl, Joana Figueiredo
Marine & Environmental Sciences Faculty Articles
Increased temperature and CO2 levels are considered key drivers of coral reef degradation. However, individual assessments of ecological responses (calcification) to these stressors are often contradicting. To detect underlying drivers of heterogeneity in coral calcification responses, we developed a procedure for the inclusion of stress–effect relationships in ecological meta‐analyses. We applied this technique to a dataset of 294 empirical observations from 62 peer‐reviewed publications testing individual and combined effects of elevated temperature and pCO2 on coral calcification. Our results show an additive interaction between warming and acidification, which reduces coral calcification by 20% when pCO2 levels exceed …
The Effects Of Ocean Acidification On The Gametogenesis Of The Red Tree Coral, Primnoa Pacifica, Ashley Rossin
The Effects Of Ocean Acidification On The Gametogenesis Of The Red Tree Coral, Primnoa Pacifica, Ashley Rossin
Electronic Theses and Dissertations
Primnoa pacifica, otherwise known as the Red Tree Coral, is one of the most ecologically important corals in the North Pacific. This species is an ecosystem engineer, providing essential habitat for commercially important fish and invertebrate species. Ocean acidification (OA) threatens corals and all calcifying organisms and is more prevalent in polar and sub-polar regions as the concentration of CO2 is higher and there is a lowered buffering capacity due to low alkalinity in colder waters. The impact from a chemical shift in the oceans could alter the role of P. pacifica as an ecosystem engineer in predicted ocean …
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 …