Photosynthethic carbon reduction by seagrasses exposed to ultraviolet b radiation. Final technical report
Technical Report
·
OSTI ID:5637073
The species of seagrasses were selected on the basis of their dominance in the marine system, contribution to total productivity, and importance to the life histories of organisms in the Indian River lagoon system along the central Florida east coast. The three seagrasses were Halophilia engelmannii, Halodule wrightii, and Syringodium filiforme. These seagrasses form an excellent experimental system as their areas of dominance fall more or less along a natural gradient of UV-B and photosynthetically active radiation (PAR) penetration. The sensitivity of photosynthesis in the seagrasses was determined and their photosynthetic response to levels of UV-B simulating atmospheric ozone depletion was monitored. Further experiments explore the possible attenuation or repair of UV-B induced photosynthetic inhibition by PAR, the role of epiphytic growth upon seagrasses as a protective UV-B shield, and the inhibition of photosynthesis in response to UV-A is studied.
- Research Organization:
- Florida Inst. of Tech., Melbourne (USA). School of Science and Engineering
- OSTI ID:
- 5637073
- Report Number(s):
- N-79-21742
- Country of Publication:
- United States
- Language:
- English
Similar Records
Inhibition of seagrass photosynthesis by ultraviolet-B radiation
The ecology of the seagrass meadows of the west coast of Florida: A community profile
Carbon uptake in a marine diatom during acute exposure to ultraviolet B radiation: Relative importance of damage and repair
Journal Article
·
Wed Jul 01 00:00:00 EDT 1981
· Plant Physiol.; (United States)
·
OSTI ID:6120647
The ecology of the seagrass meadows of the west coast of Florida: A community profile
Technical Report
·
Fri Sep 01 00:00:00 EDT 1989
·
OSTI ID:5302019
Carbon uptake in a marine diatom during acute exposure to ultraviolet B radiation: Relative importance of damage and repair
Journal Article
·
Thu Mar 31 23:00:00 EST 1994
· Journal of Phycology; (United States)
·
OSTI ID:6954991
Related Subjects
560400* -- Other Environmental Pollutant Effects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBON
CHEMICAL REACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENVIRONMENTAL EFFECTS
GRASS
IRRADIATION
NONMETALS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
RADIATION EFFECTS
RADIATIONS
SYNTHESIS
ULTRAVIOLET RADIATION
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBON
CHEMICAL REACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENVIRONMENTAL EFFECTS
GRASS
IRRADIATION
NONMETALS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
RADIATION EFFECTS
RADIATIONS
SYNTHESIS
ULTRAVIOLET RADIATION