Autotrophic picoplankton dynamics in a Chesapeake Bay sub-estuary

Freshwater autotrophic picoplankton : a review

Autotrophic picoplankton (APP) are distributed worldwide and are ubiquitous in all types of lakes of varying trophic state. APP are major players in carbon production in all aquatic ecosystems, including extreme environments such as cold ice-covered and/or warm tropical lakes and thermal springs. They often form the base of complex microbial food webs, becoming prey for a multitude of protozoan...

Hydrogen isotopes in dinosterol from the Chesapeake Bay estuary

The hydrogen isotope ratio of the dinoflagellate sterol dinosterol (4a,23,24-trimethyl-5a-cholest-22E-en-3b-ol) was measured in suspended particles and surface sediments from the Chesapeake Bay estuary in order to evaluate the influence of salinity on hydrogen isotope fractionation. D/H fractionation was found to decrease by 0.99 ± 0.23& per unit increase in salinity over the salinity range 10–...

Chesapeake bay: a second look.

Interactive Chesapeake Bay Simulation

Scientists use sophisticated numerical models to study ocean circulation and other physical systems, but the complex nature of such simulation software generally make them inaccessible to non-expert users. In principle, however, numerical models represent an ideal teaching tool, allowing users to model the response of a complex system to changing conditions. We have designed an interactive simu...

Accomplishments and Challenges in the Chesapeake Bay Program: Watershed and Estuary Models

The reduction of nutrient over-enrichment (eutrophication) is the most important undertaking in the restoration of the Chesapeake Bay ecosystem. Efforts toward this end are guided and evaluated though extensive use of linked simulation models of the airshed, watershed and estuary. These models track the inputs of nutrients through the watershed and into the bay and predict the consequences to w...