SciELO - Scientific Electronic Library Online

 
vol.47 issue4Arrecifes coralinos de Bocas del Toro, Panamá: III. Distribución, estructura, diversidad y estado de conservación de los arrecifes de las islas Pastores, Cristóbal, Popa y Cayo AguaEfecto tóxico del DDT, clordano y agua de la presa Ignacio Ramírez (México), sobre Daphnia magna (Crustacea: Daphnidae) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744

Abstract

MUNGUIA-VEGA, Adrián  and  REYES-BONILLA, Héctor. Concentración de clorofila a en colonias de Pocillopora verrucosa (Scleractina) durante un blanqueamiento coralino en el Golfo de California, México (1997). Rev. biol. trop [online]. 1999, vol.47, n.4, pp.677-680. ISSN 0034-7744.

El Niño-Southern Oscillation 1997-98 significantly elevated sea temperatures in the Gulf of California and caused widespread coral bleaching starting in july 1997. Changes in chlorphyll a concentration by unit of area (cm2) among normal, discolored and totally bleached colonies of the coral Pocillopora verrucosa (=P. elegans) were determined in 27 colonies collected in october, 1997 at Ensenada de Muertos, Baja California peninsula, México (24° 03’ N), by spectrophotometric determinations. Mean pigment values varied from 2.06 µg/cm2 to 1.12 µg/cm2 and 0.09 µg/cm2 among normal, decolorated and totally bleached colonies, respectively, although statistically significant differences only appeared between completely bleached and normal corals. The low chlorophyll concentration of the healthy-looking ("normal") corals and the lack of differences in pigment concentrations between these and partially bleached corals, indicated that the former had actually suffered a previous loss of pigmentation and may have been recovering when sampled.

Keywords : Bleaching; Pocillopora verrucosa; Chloropyll a; Zooxanthellae; ENSO; Corals.

        · text in Spanish

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License