Effects of ocean acidification, temperature and nutrient regimes on the appendicularian Oikopleura dioica: A mesocosm study

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

Appendicularians are free-swimming tunicates that are common in most oceans, coastal waters, and estuaries. They build delicate, gelatinous houses that they use to filter food from the water. This study found that appendicularian abundance increased with ocean acidification, warmer temperatures, and higher nutrient levels. This suggests that appendicularians will play ...

Reviewing the impact of increased atmospheric CO2 on oceanic pH and the marine ecosystem.

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

The world’s oceans contain an enormous reservoir of carbon, greater than either the terrestrial or atmospheric systems. The fluxes between these reservoirs are relatively rapid such that the oceans have taken up around 50% of the total carbon dioxide (CO2) released to the atmosphere via fossil fuel emissions and other ...

Maternal effects may act as an adaptation mechanism for copepods facing pH and temperature changes

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

Copepods produced more eggs in warmer temperatures, but the increase was smaller when copepods were simultaneously exposed to warmer temperature and ocean acidification conditions (lower pH). When pH changed between egg production and hatching, fewer eggs hatched. Warmer egg production temperature induced a positive maternal effect and increased the egg ...

Size-dependent pH effect on calcification in post-larval hard clam Mercenaria spp.

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

The shell calcification rates of small hard clams in five size classes (0.39, 0.56, 0.78, 0.98, and 2.90 mm shell height) decreased with increasingly severe ocean acidification conditions (pH 8.02, 7.64, and 7.41). Clams in the larger sizes were able to deposit new shell material even under corrosive conditions. However, ...

Impact of anthropogenic ocean acidification on thermal tolerance of the spider crab Hyas araneus

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

Thermal sensitivity of spider crabs, as indicated by heart rate, rose under increasing levels of ocean acidification conditions. The results suggest a narrowing of the spider crab's thermal window under moderate increases in ocean acidification. (Laboratory study)

Effects of ocean acidification and warming on the larval development of the spider crab Hyas araneus from different latitudes (54° vs. 79° N)

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

Spider crab larvae developed more slowly, grew less, and lower physiological fitness under increasing levels of ocean acidification conditions. (Laboratory study)

Effects of elevated CO2 and phosphorus supply on growth, photosynthesis and nutrient uptake in the marine macroalga Gracilaria lemaneiformis (Rhodophyta)

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

The amount of available phosphorus appeared to regulate how much inorganic carbon was used by a red alga grown at different levels of ocean acidification conditions. Growth reflected a balance between carbon and nutrient metabolism. (Laboratory study)

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