Accession Number:

ADA634254

Title:

Spatial and Diel Variability in Photosynthetic and Photoprotective Pigments in Shallow Benthic Communities

Descriptive Note:

Corporate Author:

MIAMI UNIV FL ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE

Personal Author(s):

Report Date:

1997-09-30

Pagination or Media Count:

4.0

Abstract:

LONG-TERM GOALS. We expect considerable spatial and temporal variability in optical properties of shallow benthic and planktonic plant communities. Our long-term goal is to test the hypothesis that the diel component of this variability is predictable and can be separated from the noise of other types of variability, and used to characterize and evaluate the community. OBJECTIVES. Our major objective is to determine the spatial and temporal variability, particularly diel variability, in photosynthetic and photoprotective pigments and the fluorescence spectra of photosynthetic organisms found in different types of shallow marine benthic communities and the associated water column. APPROACH. We will collect sediment and water samples over 24 hour cycles in several types of environments, including carbonate Lee Stocking Island, Bahamas and silicate sands Monterey Bay, California, in the vicinity of coral reefs and seagrass beds. Photosynthetic and photoprotective pigments will be quantified in these samples using High Performance Liquid Chromatography. Changes in pigments over diel cycles will be related to field measurements of absorbance and fluorescence. Drs. Brand and Stephens are the key individuals participating in this part of the CoBOP program.

Subject Categories:

  • Biology
  • Physical and Dynamic Oceanography
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE