Effects of seawater temperature and pH on the boring rates of the sponge Cliona celata in scallop shells

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

Ocean acidification increased the rate at which sponges bored into scallop shells. At pH 7.8, sponges bored twice the number of papillar holes and removed two times more shell weight than at pH 8.1. Greater erosion caused by the lower pH weakened the scallop shells. A warmer water temperature had ...

Effects of pCO2 on physiology and skeletal mineralogy in a tidal pool coralline alga Corallina elongata

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

A coralline red alga that lives in tide pools, where it is common for CO2 levels to fluctuate tremendously daily and seasonally, was relatively robust to ocean acidification conditions, compared to other types of coralline algae. (Laboratory study)

Post-larval development of two intertidal barnacles at elevated CO2 and temperature

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

Post-larvae of an intertidal barnacle (Elminius modestus) grew more slowly under ocean acidification conditions, but there were no impacts on its shell calcium content and survival by either ocean acidification or warmer temperature. were observed in high CO2 but there were no impacts on shell calcium content and survival by ...

Relative influences of ocean acidification and temperature on intertidal barnacle post-larvae at the northern edge of their geographic distribution

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

Ocean acidification (pH 7.7) impaired growth and development of an intertidal barnacle (Semibalanus balanoides), but warmer temperature (+4 °C) did not. The mineral composition of the shells did not change with either ocean acidification or warmer temperature. The combination of reduced growth and maintained mineral content suggests that the barnacles ...

Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation.

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

A species of copepod (Tisbe battagliai) had decreased reproduction and growth when exposed to ocean acidification conditions. Over time, these changes could result in smaller brood sizes, smaller females, and perhaps later maturing females, which could destabilize the food web. (Laboratory study)

Deformities in larvae and juvenile European lobster (Homarus gammarus) exposed to lower pH at two different temperatures

  • Posted on: Wed, 03/30/2016 - 16:03
  • By: petert

The ongoing warming and acidification of the world's oceans are expected to influence the marine ecosystems, including benthic marine resources. Ocean acidification may especially have an impact on calcifying organisms, and the European lobster (Homarus gammarus) is among those species at risk. A project was initiated in 2011 aiming to ...

Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2

  • Posted on: Wed, 03/30/2016 - 15:58
  • By: petert

Ocean acidification reduces the concentration of carbonate ions and increases those of bicarbonate ions in seawater compared with the present oceanic conditions. This altered composition of inorganic carbon species may, by interacting with ultraviolet radiation (UVR), affect the physiology of macroalgal species. However, very little is known about how calcareous ...

Elevated pCO2 exposure during fertilization of the bay scallop Argopecten irradians reduces larval survival but not subsequent shell size

  • Posted on: Wed, 03/30/2016 - 14:03
  • By: petert

Ocean acidification, characterized by elevated partial pressure of CO2 (pCO2), generally has negative effects on early life stages of invertebrates. We tested the idea that fertilization is a critical CO2 exposure stage for the bay scallopArgopecten irradians by determining the effects on bay scallops of exposure to high CO2 (pCO2 ~2600 ppm, pH ~7.30) from ...

Early Exposure of Bay Scallops (Argopecten irradians) to High CO2 Causes a Decrease in Larval Shell Growth

  • Posted on: Wed, 03/30/2016 - 14:00
  • By: petert

Ocean acidification, characterized by elevated pCO2 and the associated decreases in seawater pH and calcium carbonate saturation state (Ω), has a variable impact on the growth and survival of marine invertebrates. Larval stages are thought to be particularly vulnerable to environmental stressors, and negative impacts of ocean acidification have been seen ...

Effects of past, present, and future ocean carbon dioxide concentrations on the growth and survival of larval shellfish

  • Posted on: Wed, 03/30/2016 - 13:54
  • By: petert

The combustion of fossil fuels has enriched levels of CO2 in the world’s oceans and decreased ocean pH. Although the continuation of these processes may alter the growth, survival, and diversity of marine organisms that synthesize CaCO3 shells, the effects of ocean acidification since the dawn of the industrial revolution are not ...

Pages