Reference Library: Seaweed and seagrasses

Response of eelgrass Zostera marina to CO2 enrichment: Possible impacts of climate change and potential for remediation of coastal habitats

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

When eelgrass was grown for a year under ocean acidification conditions in outdoor aquaria, they had greater reproductive output, below-ground biomass, and proliferation of new shoots. The findings suggest that ocean acidification will increase the productivity of seagrass meadows. (Laboratory study)

Combined effects of CO2, temperature, irradiance, and time on the physiological performance of Chondrus crispus (Rhodophyta)

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

Growth rate and biomass of a seaweed (the red alga Chrondrus crispus) increased only when ocean acidification was accompanied by warmer temperatures. Photosynthesis was reduced under ocean acidification conditions. (Laboratory study)

Altered kelp (Laminariales) phlorotannins and growth under elevated carbon dioxide and ultraviolet-B treatments can influence associated intertidal food webs

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

Two species of brown kelp responded differently to being grown for 55 days under ocean acidification conditions. One grew more, and the other grew less. There were negative indirect effects on black turban snails that fed on the kelp. (Laboratory study)

Combined effects of ocean acidification and solar UV radiation on photosynthesis, growth, pigmentation, and calcification of the coralline alga Corallina sessilis (Rhodophyta)

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

When a coralline alga was exposed to both ocean acidification and solar UV radiation, its growth, photosynthesis, and calcification rates were greatly reduced, compared to when it was exposed only to solar UV radiation. The calcified layer of the alga appeared to provide protection from UV. The results imply that ...

Ocean acidification affects growth but not nutritional quality of the seaweed Fucus vesiculosus (Phaeophyceae, Fucales)

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

A brown seaweed (Fucus vesiculosus) grew more slowly in ocean acidification conditions. Consumption of the seaweed by an isopod (Idotea emarginata) was not affected by ocean acidification or temperature. However, reduced growth of the seaweed at high CO2 concentrations might reduce its capability to recover from intense herbivory.

Volcanic carbon dioxide vents show ecosystem effects of ocean acidification

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

This study showed the effects of ocean acidification on ecosystems at coastal sites where volcanic CO2 vents lower the pH of the water. Along gradients of normal pH (8.1–8.2) to lowered pH (mean 7.8–7.9, minimum 7.4–7.5), typical rocky shore communities with abundant calcareous organisms shifted to communities lacking scleractinian corals ...

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