A distinct bimodal distribution (Fig. 8) exists in the relation of its relative abundance with most physical parameters. It tolerates the global range of sea surface temperatures, salinity, temperature, and density stratification and is not
limited by these physical properties. Globigerina bulloides is most abundant in water masses at high southern latitudes and has distinct maxima in high northern latitudes and low latitude upwelling regions. Its geographic distribution and
data from other authors suggest a preference for productive environments (Brock et al., 1992; Duplessy et al., 1981; Hemleben et al., 1989; Kipp, 1976; Thiede, 1983; van Leeuwen, 1989; Zhang, 1985) where G. bulloides may be related to the
phytoplankton bloom succession (see discussion section of this paper).