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Effect of Ammonium Enrichment on Respiration, Zooxanthellar Densities, and Pigment Concentrations in Two Species of Hawaiian Corals

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dc.contributor.author Stambler, Noga
dc.contributor.author Cox, Evelyn F.
dc.contributor.author Vago, Razi
dc.date.accessioned 2008-08-05T05:52:37Z
dc.date.available 2008-08-05T05:52:37Z
dc.date.issued 1994-07
dc.identifier.citation Stambler N, Cox EF, Vago R. 1994. Effect of ammonium enrichment on respiration, zooxanthellar densities, and pigment concentrations in two species of Hawaiian corals. Pac Sci 48(3): 284-290.
dc.identifier.issn 0030-8870
dc.identifier.uri http://hdl.handle.net/10125/2237
dc.description.abstract Small branch tips or "nubbins" of two species of Hawaiian corals, Pocillopora damicornis (Linnaeus) and Montipora verrucosa Vaughan, were exposed to four ammonium concentrations, ammonium-stripped < 2 uM), ambient (~2 uM), and two enriched (20 uM and 50 uM) in microcosm tanks. Nubbins represent replicates of a single coral colony. We examined the effect of ammonium enrichment on zooxanthellar densities, pigment concentrations, and respiration rates of the nubbins. Nubbins of both P. damicornis and M. verrucosa showed a trend of increased pigment concentration with elevated ammonium concentration. Pocillopora damicornis increased from 9.3 ug chlorophyll a cm-2 in the ammonium-stripped treatment to 24.8 ug cm-2 in the 50-uM ammonium treatment. Similarly, M. verrucosa increased from 1.9 to 19.4 ug chlorophyll a cm-2. There were no significant differences in algal densities, pigment concentrations per cell, pigment ratios, or respiration rates.
dc.language.iso en-US
dc.publisher University of Hawaii Press
dc.title Effect of Ammonium Enrichment on Respiration, Zooxanthellar Densities, and Pigment Concentrations in Two Species of Hawaiian Corals
dc.type Article
dc.type.dcmi Text
Appears in Collections: Pacific Science Volume 48, Number 3, 1994


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