Results 221 to 230 of about 18,793 (274)

Effects of solar ultraviolet radiation on coral reef organisms

Photochemical & Photobiological Sciences, 2009
Organisms living in shallow-water tropical coral reef environments are exposed to high UVR irradiances due to the low solar zenith angles (the angle of the sun from the vertical), the natural thinness of the ozone layer over tropical latitudes, and the high transparency of the water column.
Anastazia T, Banaszak, Michael P, Lesser
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Chemical Diversity of Coral Reef Organisms

2002
Coral reefs in the tropical and subtropical waters are habitats of diverse species of organisms, especially sessile invertebrates. These organisms have yielded numerous compounds having diverse chemical structures and biological activities. Some of them have been developed into anticancer agents which are now under clinical trials and some others as ...
Tatsuo Higa, Michael C. Roy, Junichi Tanaka, Ikuko I. Ohtani   +3 more
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Effects of ultraviolet radiation on corals and other coral reef organisms

Global Change Biology, 1996
AbstractThe discovery of the importance of solar ultraviolet radiation (UVR) as a factor affecting the biology of coral reefs dates only to about 1980. Interest has heightened during the past five years owing to the demonstration of loss of stratospheric ozone through human activities. We have only begun to document gross, qualitative effects of UVR on
J. MALCOLM SHICK, MICHAEL P. LESSER, PAUL L. JOKIEL   +2 more
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Competition Among Sessile Organisms on Coral Reefs

2010
Competition among sessile organisms is a major process on coral reefs, and is becoming more important as anthropogenic disturbances cause shifts in dominance to non-reef builders such as macroalgae, soft corals, ascidians, and corallimorpharians. Long-term monitoring and field experiments have demonstrated that competition for limited space can exert ...
Nanette E. Chadwick, Kathleen M. Morrow
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PROCESSES OF ORGANIC PRODUCTION ON CORAL REEFS

Biological Reviews, 1977
Summary1. The first quantitative studies of production on coral reefs were those of Sargent & Austin who showed that productivity on reefs was considerably higher than in surrounding waters. This high production occurred in spite of nutrient limitation and low productivity of offshore waters.
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Diseases of Coral Reef Organisms

1997
All coral reef organisms are susceptible to diseases, as are terrestrial organisms, but studying these diseases can be more difficult and much remains to be learned. Although health impairments of corals were first recognized only in the early 1970s, increasing numbers of infectious and non-infectious diseases, causing morbidity and mortality in ...
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Calcification and organic production on a Hawaiian coral reef

Marine Chemistry, 2011
Net ecosystem calcification rates (NEC) and net photosynthesis (NP) were determined from CO 2 seawater parameters on the barrier coral reef of Kaneohe Bay, Oahu, Hawaii. Autosamplers were deployed to collect samples on the barrier reef every 2 h for six 48-hour deployments, two each in June 2008, August 2009, and January/February 2010.
K.E.F. Shamberger, R.A. Feely, C.L. Sabine, M.J. Atkinson, E.H. DeCarlo, F.T. Mackenzie, P.S. Drupp, D.A. Butterfield   +7 more
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Consequences of Coral Bleaching for Sessile Reef Organisms

2009
Sessile organisms, such as corals and erect algae, provide a complex architecture on coral reefs that is important for capturing light and utilizing dissolved gases and plankton to maintain high primary production (Enriques et al. 2005; Finelli et al. 2006). These sessile organisms also provide refuge and shelter for many mobile animals (Chap. 9).
McClanahan, T.R., Weil, E., Cortés, J., Baird, A.H., Ateweberhan, M.   +4 more
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From molecules to moonbeams: Spawning synchrony in coral reef organisms

Invertebrate Reproduction & Development, 2008
Summary A mini-symposium at the 11th International Coral Reef Symposium highlighted significant advances towards understanding the factors controlling reproductive timing and spawning synchrony in coral reef organisms. Studies of the phenology of reef organisms are finally moving beyond the purely descriptive and researchers are starting to explore the
Guest, J.R., Baird, A.H., Clifton, K.E., Heyward, A.J.   +3 more
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Calcification and organic productivity at the world's southernmost coral reef

Marine Chemistry, 2020
Abstract Estimates of coral reef calcification and organic productivity provide valuable insight to community functionality and the response of an ecosystem to stress events. High-latitude coral reefs are expected to experience rapid changes in calcification rates and become refugia for tropical species following climate change and increasing ...
Kay L. Davis, Ashly McMahon, Rogger E. Correa, Isaac R. Santos   +3 more
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