The impact of oyster aquaculture on the estuarine carbonate system

  • Posted on: Thu, 07/14/2022 - 13:29
  • By: kcanesi

Abstract: Many studies have examined the vulnerability of calcifying organisms, such as the eastern oyster (Crassostrea virginica), to externally forced ocean acidification, but the opposite interaction whereby oysters alter their local carbonate conditions has received far less attention. We present an exploratory model for isolating the impact that net calcification and ...

Controls on buffering and coastal acidification in a temperate estuary

  • Posted on: Thu, 07/14/2022 - 13:18
  • By: kcanesi

Abstract: Estuaries may be uniquely susceptible to the combined acidification pressures of atmospherically driven ocean acidification (OA), biologically driven CO2 inputs from the estuary itself, and terrestrially derived freshwater inputs. This study utilized continuous measurements of total alkalinity (TA) and the partial pressure of carbon dioxide (pCO2) from the mouth of ...

Biocalcification in the eastern oyster (Crassostrea virginica) in relation to long-term trends in Chesapeake Bay pH

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

Estuarine waters are more susceptible to acidification because they are subject to multiple acid sources and are less buffered than marine waters. Consequently, estuarine shell-forming species may experience acidification sooner than marine species although, the tolerance of estuarine calcifiers to pH changes is poorly understood. This study analyzed 23 years ...

Health and population-dependent effects of ocean acidification on the marine isopod Idotea balthica

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

The immune responses of grazing isopods (Idotea balthica) in the Baltic Sea dropped by 60 to 80 percent after the isopods were placed in ocean acidification conditions for 20 days. In addition, isopods from a low salinity site, where their health was already compromised, suffered 100 percent mortality when placed ...

Inter-decadal variability in zooplankton and phytoplankton abundance on the Newfoundland and Scotian shelves

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

This study analyzed changes in phytoplankton and zooplankton on the Newfoundland and Scotian shelves from 1962 to 2003 in relation to changes in oceanography. Three categories of phytoplankton (color, diatoms, dinoflagellates) increased in abundance in the 1990s, and these increases generally persisted into 2001–2003. This is believed to be a ...

Gulf of Maine intermediate waters

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

This study analyzed thermohaline dynamics of the Gulf of Maine based on data published in 1968. It describes six water masses: Maine Surface Water, Maine Intermediate Water, and Maine Bottom Water as interior water masses; and Scotian Shelf Water, Slope Water, and Georges Bank Water as exterior water masses. ...

Influences of oceanographic processes on the biological productivity of the Gulf of Maine

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

The Gulf of Maine's unusual geography and oceanography make it distinct from other continental shelf ecosystems. It has deep basins, shallow offshore banks that limit water flow between the Gulf and the open Atlantic Ocean, strong tidal mixing of it shallower waters, and a seasonal cycle of intense winter cooling, ...

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