Bicarbonate addition promotes coral growth

Article Abstract:

Adding 2 mM of bicarbonate to aquaria in which there are tropical ocean water and Porites porites branches promotes skeletal growth of the coral, changing it by a factor of 2. Nitrate addition of ammonium addition reduced growth, but not when the extra bicarbonate was there. It appears that dissolved inorganic carbon (DIC) in the ocean is a limiting factor for growth of coral and that the limitation is greater if nitrate and ammonium are present. Adding DIC raises coral calcification rates and protects against nutrient enrichment.

Bicarbonates, Corals

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Volatile bromocarbons produced by Falkenbergia stages of Asparagopsis spp. (Rhodophyta)

Article Abstract:

Volatile bromocarbons produced by 12 Falkenbergia phase isolates of red algae Asparagopsis spp. (Rhodophyta) collected in widely separated locations, in both warm- and cold-water environments, are discussed. Greater irradiance brought higher halocarbon release rates. Qualitative and quantitative differences were found between isolates. Asparagopsis taxiformis is a red alga and has a dioecious gametophytic stage that alternates in life cycle with a heteromophic sporophyte, Falkenbergia hillebrandii.

Statistical Data Included, Halocarbons, Red algae

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