Skip to main content

Free Content Effects of Turbidiy on the Photosynthesis and Respiration of Two South Florida Reef Coral Species

Download Article:
 Download
(PDF 622.2 kb)
 

Abstract:

The photosynthetic and respiratory responses of two scleractinian coral species from Florida, Dichocoenia stokesii and Meandrina meandrites were examined in vitro under conditions of elevated turbidity for up to 3 weeks. Turbidity ranges of 7–9, 14–16 and 28–30 NTU were tested and compared to controls at 0–2 NTU. The highest range corresponds with the maximum allowed during construction in Florida coastal waters. No differences were found between control and the 7–9 NTU groups. However, both species exhibited significant changes in P:R ratio after 2–3 days in both the 14–16 and the 28–30 NTU ranges compared to controls. Mucus production was clearly evident in the higher turbidity ranges. Exposure to 28–30 NTU depressed the P:R ratio to below 1.0, a level that was maintained for the 21-day duration of the experiments. Light was never less than the saturation value of either species, and no change in light quality was observed as a function of turbidity. Since no significant differences were observed in gross photosynthetic oxygen production among any of the treatment or control groups, the turbidity-related change observed in the P:R ratio appears due to increased respiration, rather than decreased photosynthesis. These results suggest that adherence to turbidity-related water quality standards as presently defined in Florida, may result in short term stress and long term decline in at least some coral species.

Document Type: Research Article

Publication date: September 1, 1995

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more