Field observations reveal temporal shifts in chlorophyll concentration and nitracline coupling in the North Pacific subtropical gyre, highlighting dynamic nutrient-depth interactions.
The deep chlorophyll maxlmum (DCM) IS a widespread feature In the subtropical gyre of the North Paclflc In mid-August 1985 chlorophyll concentration increased In the DCM, then dechned over time at 95 to 110 m depth near 28"N 155"W During the higher chlorophyll perlod the DCM lay w ~t h i n the top of the nitracline Later, as the chlorophyll concentratlon decllned and the DCM deepened, following the 24 9 slgma-t surface, the maxlmum was above the nitracllne The DCM was also a maxlmum In abundance of autotrophlc flagellates Particulate nltrogen was retained over time in the euphotic zone relative to particulate carbon and chlorophyll Phytoplankton growth rate at 90 to 110 m depth averaged 0 11 d-' and phytoplankton carbon was about 10 pg I-', about 50 % of the total paruculate carbon
No takes yet. Share an insight, caveat, or question.
Eppley et al. (1988) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: