Zobrazeno 1 - 10
of 21
pro vyhledávání: '"H. L. Conway"'
Autor:
H. L. Conway, Q. Dortch
Publikováno v:
Marine Biology. 79:151-164
The interaction between nitrate and ammonium uptake was examined as a function of preconditioning growth rate and nitrogen source by adding nitrate, ammonium, or both to nitrogen-sufficient,-deficient, and-starvedSkeletonema costatum (Grev.) Cleve an
Publikováno v:
Journal of the Fisheries Research Board of Canada. 34:545-551
We measured the concentration of diatom frustules and amorphous silicon per gram of dry sediment at 5-m intervals in the upper water column (0–40 m), in sediment traps placed at 37 and 60 m below the surface, and in a sediment core. The average con
Publikováno v:
Marine Biology. 35:177-186
Skeletonema costatum was grown in chemostats under ammonium or silicate limitation to examine its growth kinetics and changes in cellular chemical composition at different steady-state growth rates. When the relationship between the effluent limiting
Publikováno v:
Journal of the Fisheries Research Board of Canada. 34:537-544
Depth profiles of dissolved reactive silicon and amorphous particulate silicon were made at monthly intervals (April–November 1975) at stations along a southwest transect from Grand Haven, Michigan, to a point approximately in the center of the sou
Publikováno v:
Marine Biology. 43:19-31
Three marine diatoms, Skeletonema costatum, Chaetoceros debilis, and Thalassiosira gravida were grown under no limitation and ammonium or silicate limitation or starvation. Changes in cell morphology were documented with photomicrographs of ammonium
Autor:
H. L. Conway
Publikováno v:
Journal of the Fisheries Research Board of Canada. 35:286-294
By use of continuous-culture techniques, populations of the freshwater diatom Asterionella formosa were exposed to various concentrations of arsenic or cadmium for periods of 6–23 days. Sorption of arsenic (as arsenate) was a linear function of amb
Autor:
Paul Harrison, H. L. Conway
Publikováno v:
Marine Biology. 43:33-43
The kinetic response of ammonium- or silicate-limited and ammonium- or silicatestarved populations of Chaetoceros debilis, Skeletonema costatum, and Thalassiosira gravida was determined by a single addition of the limiting nutrient to a steady-state
Publikováno v:
Marine Ecology Progress Series. 52:301-312
Publikováno v:
Journal of the Fisheries Research Board of Canada. 34:552-558
Diatom biomass maxima occurred in spring and fall and produced a bimodal bloom sequence at an offshore Lake Michigan station. The maximum in May was preceded by rapid growth as indicated by increased values of primary productivity and pigment concent
Autor:
H. L. Conway
Publikováno v:
Marine Biology. 39:221-232
The effect of ambient ammonium concentration on the nitrate uptake rate of marine phytoplankton was investigated. These studies consisted of laboratory experiments using unialgal species and field experiments using natural phytoplankton communities.