492
D. J. TRANTER:
20-25
> 25
Imgm-II
Fig. 7. Chlorophyll a distribution with respect to latitude and month. Column values to 150 m.
(After HUMPHREY and KERR, 1969)
Fig. 8. Day zooplankton biomass with respect to latirude and month. Column values to 200 m.
(After TRANTER and KERR, 1969)
Surface nutrients were generally low, even in areas where upwelling had previously
been recorded (WYRTKI, 1962). Chlorophyll a was concentrated well beneath the surface,
usually at about 75 m. The depth of the photosynthetic layer, as indicated by light-
D. J. TRANTER:
20-25
> 25
Imgm-II
Fig. 7. Chlorophyll a distribution with respect to latitude and month. Column values to 150 m.
(After HUMPHREY and KERR, 1969)
Fig. 8. Day zooplankton biomass with respect to latirude and month. Column values to 200 m.
(After TRANTER and KERR, 1969)
Surface nutrients were generally low, even in areas where upwelling had previously
been recorded (WYRTKI, 1962). Chlorophyll a was concentrated well beneath the surface,
usually at about 75 m. The depth of the photosynthetic layer, as indicated by light-