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The oceanography and ecology of the Ross Sea.
The continental shelf of the Ross Sea exhibits substantial variations in physical forcing, ice cover, and biological processes on a variety of time and space scales. Its circulation is characterized by advective inputs from the east and exchanges with off-shelf regions via the troughs along the nort...
Antagonistic coevolution of marine planktonic viruses and their hosts.
We consider the potential dynamics, underlying genetic mechanisms and fitness costs, and ecological impacts of virus-host coevolution in marine waters. Given that much of our knowledge is derived from laboratory experiments, we also discuss potential challenges and approaches in scaling up to divers...
A deep-time perspective of land-ocean linkages in the sedimentary record.
We discuss an integrated approach to the analysis of deep-time sediment archives (>10(6) years) that considers the entire system, from eroding catchments where sediment is produced to subsiding basins where sediment accumulates. This holistic approach is presented within the framework of fundamental...
Microbially mediated transformations of phosphorus in the sea: new views of an old cycle.
Phosphorus (P) is a required element for life. Its various chemical forms are found throughout the lithosphere and hydrosphere, where they are acted on by numerous abiotic and biotic processes collectively referred to as the P cycle. In the sea, microorganisms are primarily responsible for P assimil...
The ocean plays a critical role in global carbon cycling: it handles half of the global primary production, yielding the world's largest stock of reduced organic carbon (ROC) that supports one of the world's largest biomasses. However, the mechanisms whereby ROC becomes mineralized r...
Emerging topics in marine methane biogeochemistry.
Resurrecting the ecological underpinnings of ocean plankton blooms.
We endorse the view that blooms are not governed by abiotic factors controlling cell division, but rather reflect subtle ecosystem imbalances instigated by climate forcings or food-web shifts. The annual global procession of ocean plankton blooms thus represents a report on the recent history of pre...
Evaluation of in situ phytoplankton growth rates: a synthesis of data from varied approaches.
The use of clean sampling and incubation methods and the development of biomass-independent techniques for estimating the rates of growth and grazing mortality of phytoplankton in the ocean have resulted in estimates of phytoplankton growth rates that are approximately twice those reported prior to...
Causes for contemporary regional sea level changes.
Regional sea level changes can deviate substantially from those of the global mean, can vary on a broad range of timescales, and in some regions can even lead to a reversal of long-term global mean sea level trends. The underlying causes are associated with dynamic variations in the ocean circulatio...
Hypoxia, nitrogen, and fisheries: integrating effects across local and global landscapes.
We present an analysis of hypoxia, nitrogen loadings, and fisheries landings in 30 estuaries and semien-closed seas worldwide. Our results suggest that hypoxia does not typically reduce systemwide fisheries landings below what would be predicted from nitrogen loadings, except where raw sewage is rel...