Journal article

Abundance distribution and flow-cytometric characterization of picophytoprokaryote populations in central (17 degrees S) and southern (20 degrees S) shelf waters of the Great Barrier Reef

ND Crosbie, MJ Furnas

Journal of Plankton Research | OXFORD UNIV PRESS | Published : 2001

Abstract

Synechococcus was more abundant and had a greater biomass than Prochlorococcus at most inshore and mid-shelf sites in the central (17°S) Great Barrier Reef (GBR), and at all shelf sites in the southern (20°S) GBR. Significant Prochlorococcus populations were confined to mid-and outer-shelf sites with mixed or partially stratified water columns of greater oceanic character in the central GBR, where depth-weighted average Synechococcus and Prochlorococcus abundances were better correlated with salinity, shelf depth and chlorophyll a concentration, than with concentrations of NH4+, NOx- (i.e. NO2- + NO3-), or PO43-. Vertical gradients of normalized mean cellular red and orange fluorescence of S..

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