California State University, Northridge WordmarkOviatt Library WordmarkOviatt Library Catalog Wordmark
Author Wall, Christopher, author.
Title Effects of ocean acidification and temperature on the physiology of juvenile scleractinian corals / by Christopher Wall.
Published [Northridge, California] : California State University, Northridge, 2013.

 Electronic Book  QH51 .Z95 2013 W35eb    ONLINE
Description 1 online resource (vi, 152 pages)
Content Type text
Format online resource
File Characteristics text file PDF
Thesis M.S. California State University, Northridge 2013.
Bibliography Includes bibliographical references (pages 132-152).
Summary In this thesis research, the author used juvenile Seriatopora caliendrum from southern Taiwan, and massive Porites spp. from Moorea, French Polynesia, to experimentally evaluate the effects of ocean acidification (OA) on three important physiological processes of scleractinians: coral bleaching, calcification, and metabolism inferred through respiration and excretion rates. In Chapter II, using S. caliendrum, results from the research indicate that OA (841 μatm pCO2) does not affect juvenile S. caliendrum corals undergoing thermal bleaching at 30.53 °C, and OA alone does not result in coral bleaching under ambient temperatures (27.65 °C). Subsequently in Chapter III, the author describes having exposed juvenile massive Porites spp. to low-pH and elevated dissolved inorganic carbon (DIC) seawater within sealed respirometers incubated in situ. It was determined that low-pH (pHT 7.73, Ωarag = 2.27) at 976 μatm pCO2 had no effect on calcification, respiration, or the energetic expenditure concurrent with calcification relative to control conditions. However, elevated [DIC] (~3 mM) stimulated calcification under low-pH and low- Ωarag (pHT 7.69, Ωarag = 2.75), indicating calcification may be DIC limited under ambient [DIC] (~2 mM). These results agree with past studies identifying adult and juvenile massive Porites spp. as resistant to environmental stress, and emphasize the success and pragmatism of in situ designs for the future application of ecologically relevant OA experiments. Finally, in Chapter IV using S. caliendrum, the author determined that OA (885 μatm pCO2) affected the metabolism of intact juvenile corals by increasing nitrogen excretion, however OA did not affect rates of aerobic respiration or total protein content. Finally, preliminary results are presented that suggest OA (885 μatm pCO2) affects coral metabolism by increasing rates of nitrogen excretion, which has implications for amino acid and protein catabolism, as well as the capacity for corals to regulate intracellular pH.
Note Description based on online resource; title from PDF title page (viewed on January 09, 2013).
Subject Ocean acidification -- Physiological effect.
Corals -- Effect of water acidification on.
Local Subject Dissertations, Academic -- CSUN -- Biology.
OCLC number 850980498