Aquatic scientists have always been intrigued with concepts of scale. This interest perhaps stems from
the nature of ßuid dynamics in oceans and lakes energy cascades from spatial scales of kilometers
down to viscous scales at centimeters or less. Turbulent processes affect not only an organisms perception
of, and response to, the physical environment, but also the interaction between species, both within and
across trophic levels.
This volume has two first authors because it is a result of very intensive
teamwork between the two authors. We have had three brainstorm meetings,
each of approximately one week’s duration. There have been numerous pingpong
games (questions–answers–new proposals etc.) on the Internet. All the
chapters have major contributions from both of us. We hope that the volume
therefore demonstrates a synergistic effect, reflecting the positive teamwork
that is behind the volume.
Zubkov et al. (2000) found that Prochlorococcus spp. were the dominant cyanobacteria in the
northern and southern Atlantic gyres and the equatorial region, giving way to Synechococcus
spp. in cooler waters. Synechococcus cells also become more numerous and even reach
blooming densities near the tropical region affected by the Mauritanian upwelling. Finally,
the concentrations of Picoeukaryotes tend to be at their height in temperate waters.