August 24, 2017 Average global temperatures and carbon dioxide (CO2) levels are expected to increase in the coming decades. Implications for ocean ecosystems include shifts in microbial community structure and subsequent modifications to nutrient pathways. Studying how predicted future temperature and CO2 conditions will impact the biogeochemistry of the
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Calcifying algae maintain settlement cues to larval abalone following algal exposure to extreme ocean acidification
August 21, 2017 Ocean acidification (OA) increasingly threatens marine systems, and is especially harmful to calcifying organisms. One important question is whether OA will alter species interactions. Crustose coralline algae (CCA) provide space and chemical cues for larval settlement. CCA have shown strongly negative responses to OA in previous
Solid state sensor for simultaneous measurement of total alkalinity and pH of seawater
August 21, 2017 Authors Ellen M Briggs, Sergio Sandoval, Ahmet Erten, Yuichiro Takeshita, Andrew C. Kummel, and Todd R. Martz Abstract A novel design is demonstrated for a solid state, reagent-less sensor capable of rapid and simultaneous measurement of pH and Total Alkalinity (AT) using ion sensitive field effect
Similar oyster reproduction across estuarine regions differing in carbonate chemistry
August 10, 2017 In laboratory studies, shellfish larvae often respond negatively to augmented [CO2], but no prior tests have related wild bivalve larval performance and carbonate chemistry spatiotemporally. The geography of Willapa Bay (Washington, USA) naturally generates two distinct regions of carbonate chemistry where non-native Pacific oysters (Crassostrea gigas)
Climate, Anchovy, and Sardine | Annual Review of Marine Science
August 10, 2017 David M. Checkley, Rebecca G. Asch, and Ryan R. Rykaczewski http://www.annualreviews.org/doi/10.1146/annurev-marine-122414-033819 Download PDF Abstract Anchovy and sardine populated productive ocean regions over hundreds of thousands of years under a naturally varying climate, and are now subject to climate change of equal or greater magnitude occurring over decades