Blooms of surf-zone diatoms along the coast of the Olympic Peninsula, Washington. VII. Variations of the carbon-to-nitrogen ratio in field samples and laboratory cultures of Chaetoceros armatum

Journal Article · Mon Mar 01 00:00:00 EST 1976 · Limnol. Oceanogr.; (United States)

DOI:https://doi.org/10.4319/lo.1976.21.2.0219· OSTI ID:7135062

Collos, Y; Lewin, J

Carbon-to-nitrogen ratios in particulate matter collected from the surf at Copalis Beach, Washington, from April to September 1972 ranged between 5.0 (April, May) and 11.2 (July). They were considered characteristic of living algae in the surf, mainly the diatom species Chaetoceros armatum. The high ratio in summer could result from a slower growth rate of the diatoms or increased irradiance. The relationship between nitrate reductase (NR) activity and C : N ratios in surf samples and laboratory cultures was also investigated. In exponentially growing cultures of C. armatum C : N ratios varied from 4.2 to 13.5, depending on culture conditions.

• Research Organization: Univ. of Washington, Seattle, WA (United States)
• OSTI ID: 7135062
• Journal Information: Limnol. Oceanogr.; (United States), Vol. 21:2
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
DIATOMS
PHYSIOLOGY
CARBON
CELL CULTURES
GROWTH
NITRATES
NITROGEN
OXIDOREDUCTASES
PARTICLES
QUANTITY RATIO
SEASONS
SEAWATER
WASHINGTON
ALGAE
BIOMASS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
ENZYMES
FLUIDS
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NONMETALS
NORTH AMERICA
OXYGEN COMPOUNDS
PACIFIC NORTHWEST REGION
PLANTS
RENEWABLE ENERGY SOURCES
USA
WATER
520100* - Environment
Aquatic- Basic Studies- (-1989)