Diel patterns in optical properties of the chlorophyte Nannochloris sp.: relating individual-cell to bulk measurements
Article Abstract:
Diel patterns in attenuation cross section in the chlorophyte Nannochloris are related to changes in cell size as a result of growth and division, and to a lesser degree to changes in refractive index. Cell size, cell-specific beam attenuation and absorption, flow cytometric forward light scatter, and carbon content all show definite diel patterns, having minima around dawn and maxima around dusk. Cell division occurs soon after dark at any of six different light levels.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Measurement of solar-stimulated fluorescence in natural waters
Article Abstract:
An oceanic Fraunhofer line discriminator (OFLD) has been used to measure solar-stimulated fluorescence in the waters of Florida Bay and the Dry Tortugas. Optically deep, oligotrophic water with low concentration of chlorophyll a (Chl a) has measurable fluorescence near 698 nm. Moderately eutrophic shallow water has a negligible amount of fluorescence from Chl a or dissolved organic matter. Benthic surfaces such as brain coral are saturated under normal light.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Ocean scalar irradiance near-surface maxima. Light scattering and chlorophyll concentration in case 1 waters: a reexamination
- Abstracts: Responses of phytoplankton to varied resource availability in large lakes of the Greater Yellowstone Ecosystem
- Abstracts: Amino acids and hexosamines as indicators of organic matter degradation state in North Sea sediments. The role of adsorption in sediment-water exchange of phosphate in North Sea continental margin sediments
- Abstracts: The biogeochemical cycling of dissolved organic nitrogen in estuarine sediments. Rhythmic ammonium regeneration and flushing in intertidal sediments of the Sado estuary
- Abstracts: Development of a subsurface chlorophyll maximum at the entrance to the Gulf of Finland, Baltic Sea. A light-scattering matrix for unicellular marine phytoplankton