Reference Library: West Coast

Chemical and biological impacts of ocean acidification along the west coast of North America

  • Posted on: Fri, 12/16/2016 - 10:17
  • By: jackie

The continental shelf region off the west coast of North America is seasonally exposed to water with a low aragonite saturation state by coastal upwelling of CO2-rich waters. To date, the spatial and temporal distribution of anthropogenic CO2 (Canth) within the CO2-rich waters is largely unknown. Here we adapt the multiple ...

Water quality criteria for an acidifying ocean: Challenges and opportunities for improvement

  • Posted on: Tue, 11/01/2016 - 11:50
  • By: jackie

Acidification has sparked discussion about whether regulatory agencies should place coastal waters on the Clean Water Act 303(d) impaired water bodies list. Here we describe scientific challenges in assessing impairment with existing data, exploring use of both pH and biological criteria. Application of pH criteria is challenging because present coastal ...

Lessons from two high CO2 worlds – future oceans and intensive aquaculture

  • Posted on: Fri, 10/28/2016 - 13:40
  • By: jackie

Exponentially rising CO2 (currently ~400 µatm) is driving climate change and causing acidification of both marine and freshwater environments. CO2 directly affects acid–base and ion regulation, respiratory function and aerobic performance in aquatic animals. Elevated CO2 projected for end of this century (e.g. 800–1000 µatm) can also impact physiology, and have substantial ...

The Pacific oyster, Crassostrea gigas, shows negative correlation to naturally elevated carbon dioxide levels: Implications for near-term ocean acidification effects

  • Posted on: Wed, 06/15/2016 - 21:10
  • By: petert

At an oyster hatchery on the Oregon coast, researchers found that production of oyster larvae and growth of young oysters dropped when the aragonite saturation state decreased in seawater. (Laboratory study)

Extracellular acid–base regulation during short-term hypercapnia is effective in a shallow-water crab, but ineffective in a deep-sea crab

  • Posted on: Mon, 06/13/2016 - 05:56
  • By: Anonymous

Experiments with deep-sea and shallow-water crab species from the U.S. west coast indicated that deep-sea animals, which are adapted to a stable environment and have reduced metabolic rates, lack the short-term acid–base regulatory capacity to cope with the sudden, large increases in carbon dioxide that would occur if carbon dioxide ...

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