Publication de 6 numéros par an
ISSN Imprimer: 0018-8166
ISSN En ligne: 1943-5991
Indexed in
Assessment of Flux of Particulate Organic Phosphorus from the Photosynthesis Zone of the Deep-Water Section of the Black Sea
RÉSUMÉ
Simultaneously measured concentrations of particulate organic phosphorus (PPIM), particulate organic carbon (CPIM) and chlorophyll in the 0−100 m water layer, obtained over the years 1985−1994 in the western and central parts of the Black Sea were generalized. According to these indicators and regression equations, calculated on the basis of them, a series of weighted averages of the PPIM concentration in the deep-water part of the sea throughout the year was restored. On the basis of the calculated weighted average PPOM concentrations and rate of its sedimentation, within-year variability of sediment PPOM flux from the photosynthesis zone was estimated. Its maximal values corresponded to the cold, minimal − to the warm period of the year. Average annual values of PPOM flux, obtained on the basis of average monthly weighted mean of its concentrations, and calculated on the basis of the long-term average monthly values of the «new» primary production were practically identical and amounted to 46 and 44.9 mg-at P·m−2·year−1 respectively.