Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Effect of temperature on the growth response of the marine diatom Skeletonema costatum to light variation

Conference · · J. Phycol.; (United States)
OSTI ID:6653302
Spectral analysis of daily light intensity (I/sub 0/) over Rhode Island during the spring and summer months yields low autocorrelation coefficients for consecutive days; thus phytoplankton in well-mixed Narragansett Bay are subject to wide variations in daily light intensity. Natural diatom blooms incubated in dialysis at 100, 25 and 3% I/sub 0/ show the dominant diatom Skeletonema costatum attained maximum growth rates at I/sub 0/ or 0.50 I/sub 0/ after two days at 20/sup 0/C (summer bloom). During the spring bloom growth rates varied by < two-fold at I/sub 0/ to 3% I/sub 0/ during 4 day incubations. Axenic S. costatum cultured at 20/sup 0/C exhibited growth rates proportional to intensity after 12 h; at 10/sup 0/C growth rates did not vary until 24 h (second photoperiod) and at 2/sup 0/C rates were equal throughout 36 h. Four other marine diatoms exhibited similar responses in vitro. Thus the in situ growth rates of diatom species may closely reflect daily variations in light intensity during the summer, but require longer periods to respond to changes in light during the spring bloom periods when temperature is lower.
Research Organization:
Univ. of Rhode Island, Kingston
OSTI ID:
6653302
Conference Information:
Journal Name: J. Phycol.; (United States) Journal Volume: 14
Country of Publication:
United States
Language:
English

Similar Records

Chlorophyll turnover in Skeletonema costatum, a marine plankton diatom
Journal Article · Sun Jul 01 00:00:00 EDT 1979 · Plant Physiol.; (United States) · OSTI ID:5686308
Copper toxicity to Skeletonema costatum (Bacillariophyceae)
Journal Article · Tue Feb 28 23:00:00 EST 1978 · J. Phycol.; (United States) · OSTI ID:6817885
Studies of delta-aminolevulinic acid dehydrase from Skeletonema costatum, a marine plankton diatom
Journal Article · Sat Dec 31 23:00:00 EST 1977 · Plant Physiol., Suppl.; (United States) · OSTI ID:6138685

Related Subjects

560203* -- Thermal Effects-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALGAE
BAYS
BIOLOGICAL EFFECTS
BIOMASS
DAILY VARIATIONS
DIATOMS
ELECTROMAGNETIC RADIATION
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
ESTUARIES
GROWTH
NORTH ATLANTIC REGION
PHYSIOLOGY
PLANTS
RADIATIONS
RENEWABLE ENERGY SOURCES
RHODE ISLAND
SEASONAL VARIATIONS
SOLAR RADIATION
SURFACE WATERS
TEMPERATURE EFFECTS
VARIATIONS
VISIBLE RADIATION