Effect of elevated pCO2 on the production of dimethylsulphonioproprionate (DMSP) and dimethylsulphide (DMS) in two species of Ulva (Chlorophyceae)

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

Intracellular concentration of DMSP remained unaffected in two macroalgae species (Ulva lactuca and U. clathrata) under ocean acidification conditions, but significant differences in extracellular production of DMSP and DMS occurred in U. lactuca. (Laboratory study)

Effects of high CO2 seawater on the copepod (Acartia tsuensis) through all life stages and subsequent generations.

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

Ocean acidification conditions did not affect survival, body size, or developmental speed of a copepod species during any of its life stages. Egg production and hatching rates also did not change among generations of females exposed to ocean acidification conditions. Thus, this copepod appears more tolerant to ocean acidification than ...

Effects of raised CO2 concentration on the egg production rate and early development of two marine copepods (Acartia steueri and Acartia erythraea)

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

Reproduction and larval development of two copepod species were sensitive to extreme ocean acidification conditions. The hatching rate tended to decrease, and mortality rate of young copepods tended to increase. (Laboratory study)

Sub-lethal effects of elevated concentration of CO2 on planktonic copepods and sea urchins

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

Under extreme ocean acidification conditions (pH 6.8), the egg production rates of copepods decreased significantly. For two species of sea urchins, fertilization rate of eggs decreased with increasing ocean acidification conditions. Furthermore, the size of urchin larvae decreased and deformities increased. These effects on marine life could lead to changes ...

Acidification and warming affect both a calcifying predator and prey, but not their interaction

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

Muscle length and claw strength of green crabs decreased after the crabs had been in ocean acidification conditions (pH 7.7) for 5 months. Periwinkles tended to have weaker shells in response to acidification. Predation by green crabs on periwinkles did not appear to change under ocean acidification conditions. (Laboratory study) ...

Sensitivity to ocean acidification parallels natural pCO2 gradients experienced by Arctic copepods under winter sea ice

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

Some copepods (Calanus species) in the Arctic routinely encounter a range of seawater pH levels each day as they migrate vertically in the ocean; they were not severely affected when exposed to ocean acidification conditions in the laboratory. In contrast, a copepod species (Oithona similis) that does not vertically migrate, ...

Impact of ocean acidification and elevated temperatures on early juveniles of the polar shelled pteropod Limacina helicina: Mortality, shell degradation, and shell growth.

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

When pre-winter juvenile pteropods were cultured at a range of warmer temperatures and ocean acidification levels for 29 days, temperature was the overriding cause of increased mortality. However, ocean acidification was the main factor in reducing shell diameter by 10-12 percent and increasing shell degradation by 41 percent. This study ...

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