. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 412 R. G. STROSS cr X \ o: LJ o o 00 cr o 0 P04 added unenriched (special storage) * j 20 24. _ B o'i i = Liter N^ 3 4 8 12 16 20 2 44 8 12 16 20 2< 2 A / * \ / / \ ^ * \ ^ // \\ I — fs \ \ T i ^f± ..» — *^* r V S C \/ n i i I I l__«fj i i i i i 8 12 16 20 24 4 TIME-ADT 8 12 16 20 24 FIGURE 3. Photosynthetic capacity with and without phosphate enrichment added at the time of incubation. Unenriched controls (dashed line) are the special storage shown in Figure 2. Solid line shows a second part of the
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 412 R. G. STROSS cr X \ o: LJ o o 00 cr o 0 P04 added unenriched (special storage) * j 20 24. _ B o'i i = Liter N^ 3 4 8 12 16 20 2 44 8 12 16 20 2< 2 A / * \ / / \ ^ * \ ^ // \\ I — fs \ \ T i ^f± ..» — *^* r V S C \/ n i i I I l__«fj i i i i i 8 12 16 20 24 4 TIME-ADT 8 12 16 20 24 FIGURE 3. Photosynthetic capacity with and without phosphate enrichment added at the time of incubation. Unenriched controls (dashed line) are the special storage shown in Figure 2. Solid line shows a second part of the same sample when enriched with phosphate and incubated with the controls. Note that dramatic stimulation was restricted to only one of 17 measurements, that shown at 1800 in B. extrinsic or intrinsic regulation. Two 20 liter carboys of water were removed from one of two tundra ponds at the beginning of each experiment. One carboy, the confinement control, was held outside of the laboratory usually shielded from the sun, when present. Samples from this carboy were paired with samples taken before each run directly from the pond. A second carboy was placed in a constant temperature (5° C) room at low light intensity (ca. 50 ft-c). The low temperature was similar to the morning minimum temperature of ponds at Barrow (71° N) where temperatures oscillate between 5° and 15° C on clear days. Small fluctuations in the daily pattern of photosynthetic capacities were evi- dent in samples taken directly from the pond (Fig. 2; dotted line) and suggest a small amplitude only. The confinement control also provided similarly phase indistinct, although statistically significant, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Lab
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
