A key question when trying to understand the global carbon cycle is whether the oceans are
net sources or sinks of carbon. This will depend on the production of organic matter relative …

In vitro observations of net community production (NCP) imply that the oligotrophic
subtropical gyres of the open ocean are net heterotrophic; in situ observations, in contrast …

Recent, parallel developments in the study of freshwater and marine ecosystems have
provided evidence that net heterotrophic systems (those in which respiratory organic matter …

The eastern boundary of the North Atlantic subtropical gyre extends from the northern tip of
the Iberian Peninsula at 43 N to south of Senegal at about 10 N, approximately the range of …

To investigate the effects of mesoscale eddies on prokaryotic assemblage structure and
activity, we sampled two cyclonic eddies (CEs) and two anticyclonic eddies (AEs) in the …

To test the hypothesis that in oligotrophic areas of the ocean respiration exceeds production,
a 12-month study was undertaken of in vitro-determined net oxygen production and …

Concurrent measurements of dark community respiration (DCR), gross production (GP), size
fractionated primary production (14C PP), nitrogen uptake, nutrients, chlorophyll a …

The aims of the Atlantic Meridional Transect (AMT) programme [www. amt-uk. org] are to
quantify the nature and causes of ecological and biogeochemical variability in the planktonic …

Abstract The tropical Indian Ocean consists of three basins, namely the Arabian Sea (AS),
Bay of Bengal (BoB) and Southern Indian Ocean (SIO), with relatively nutrient-rich waters in …

The grazing impact of protists on phytoplankton primary production in a highly oligotrophic
area of the subtropical north-east Atlantic, south-east of the Azores, was studied using the …