Larvae of the pteropod Cavolinia inflexa exposed to aragonite undersaturation are viable but shell-less

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

When larvae of Mediterranean pteropods were cultured in pH 7.82 water, they had malformations and less shell growth. At pH 7.51, the larvae did not make shells but survived and showed normal development. In a natural setting, the smaller shells or lack of shells would have both ecological and biogeochemical ...

The direct effects of increasing CO2 and temperature on non-calcifying organisms: Increasing the potential for phase shifts in kelp forests

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

Increased CO2 and temperature acted together to increase the growth of algal turfs, which produced twice as much biomass and covered four times as much space. Experimental removal of algal turfs led to greater establishment of young kelp. The findings suggest that ocean acidification and warming could potentially cause a ...

The growing human footprint on coastal and open-ocean biogeochemistry

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

Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record. Major observed trends include a shift ...

Near future ocean acidification increases growth rate of the lecithotrophic larvae and juveniles of the sea star Crossaster papposus

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

Common sunstar larvae and juveniles in ocean acidification conditions grew faster without apparent effects on survival or body structure. Unlike the larvae of some other sea star species that feed on plankton, larval common sunstars rely on nutrition provided in their egg. This difference in life history may enable some ...

Near-future level of CO2-driven ocean acidification radically affects larval survival and development in the brittlestar Ophiothrix fragilis

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

Brittlestar larvae died within 8 days after being transferred into acidified seawater (pH 7.9). The larvae had reduced growth and abnormal development and body structure. The brittlestar used in this study, Ophiothrix fragilis, dominates the seabed ecosystem off northwestern Europe, and the findings suggest that ocean acidification could lead to ...

Losers and winners in coral reefs acclimatized to elevated carbon dioxide concentrations

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

This field study in Papua New Guinea examined the effects of natural carbon dioxide seeps on coral reef ecosystems. At reduced pH, coral diversity was lower, population replenishment and abundance of some corals decreased, and interactions among species changed. Reef development ceased below pH 7.7. Ocean acidification, together with warmer ...

Contrasting resource limitations of marine primary producers: Implications for competitive interactions under enriched CO2 and nutrient regimes

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

Ocean acidification may favor growth of algal turfs rather than kelp forests. Such a change would affect the many species associated with algal turf or kelp forest habitats.

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