Batch cultures of Skeletonema costatum were grown under continual
light saturation, with nitrogen nutrients in limiting concentrations.
Population parameters measured included ¹⁴C uptake,
chlorophyll a, particulate carbon and nitrogen, and ammonia, nitrate,
and nitrite, concentrations.
A method was developed for measuring cellular nutrient reservoirs
in laboratory cultures of marine phytoplankton....
Investigation was made into the influence of changing light
intensity on the organic and elemental composition of two species of
marine diatoms, Ditylum brightwellii and Skeletonema costatum.
Analysis was made of the relative changes in soluble and insoluble
carbohydrate; polar, non-polar, and total lipid; amino acids; proteins;
and total carbon,...
Observations were made of salinity, temperature, nitrate +
nitrite, phosphate, silicate, total available nitrogen, and chlorophyll
a in nine areas of the Alaskan Inside Passage during April of 1971.
In general all properties indicated the water to be well mixed throughout
this area. The conservative properties were particularly uniform.
The nature of the bioluminescence of Gonyaulax catenella is
similar to that observed for other dinoflagellates in culture, showing
photoperiod-entrained rhythms of luminescence and stimulability
with relatively constant luminescent capacity during scotophase. G.
catenella is very sensitive to stimulation and photoinbibition. The
nature of the response to stimulation by bubbling...
A detailed study of iron concentrations measured by the reducible,
reactive ferrous, and extractable methods was conducted in Auke Bay,
Alaska during June 1973 and in Hood Canal, Washington during October
1973 and April 1974. The concentrations by each method were generally
highest at the bottom and decreased towards the...
Natural populations of phytoplankton from Yaquina Bay, Oregon,
were incubated in large polyethelene bags in- situ, with and without
the natural assemblage of zooplankton. Samples were taken daily for
two weeks in April, 1974. The biomass of phytoplankton in the bag
without grazers reached values two to three times the...