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Seasonal patterns of bacterivory by flagellates, ciliates, rotifers, and cladocerans in a freshwater planktonic community
Bacterivory in eutrophic Lake Oglethorpe, Georgia, was determined by direct observation of tracer particle uptake by all members of the planktonic community. Heterotrophic flagellates dominatedExpand
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Contribution of dissolved organic nitrogen from rivers to estuarine eutrophication
The bioavailibility of dissolved organic nitrogen (DON) in river water entering estuaries was examined for the Delaware and Hudson Rivers, USA. Water collected from above the salinity intrusion zoneExpand
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Bioavailability of DON from natural and anthropogenic sources to estuarine plankton
Utilization of dissolved organic nitrogen (DON) from natural (forests) and anthropogenic (animal pastures, urban/ suburban storm water runoff) sources (three sites per source) by estuarine planktonExpand
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Utilization of subsurface food resources for zooplankton reproduction: Implications for diel vertical migration theory
The water columns of lakes and oceans provide a diverse habitat gradient in which light, temperature, food, and predation risk all change with depth. Many planktonic organisms exhibit diel verticalExpand
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Atmospheric inputs of dissolved organic nitrogen stimulate estuarine bacteria and phytoplankton
Atmospheric deposition is recognized as a potentially large source of inorganic nutrients to many ecosystems. In marine systems, where nitrogen (N) is the nutrient typically limiting phytoplanktonExpand
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Mixotrophic Protists in Marine and Freshwater Ecosystems
Some protists from both marine and freshwater environments function at more than one trophic level by combining photosynthesis and particle ingestion. Photosynthetic algae from several taxa (mostExpand
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Light-dependent phagotrophy in the freshwater mixotrophic chrysophyte Dinobryon cylindricum
The mixotrophic (bacterivorous), freshwater chrysophyte Dinobryon cylindricum was cultured under a variety of light regimes and in bacterized and axenic cultures to investigate the role ofExpand
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Intracapsular algae provide fixed carbon to developing embryos of the salamander Ambystoma maculatum
SUMMARY Each spring, North American spotted salamander (Ambystoma maculatum) females each lay hundreds of eggs in shallow pools of water. Eggs are surrounded by jelly layers and are deposited asExpand
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Tintinnids and other microzooplankton — seasonal distributions and relationships to resources and hydrography in a Maine estuary
Species composition and abundance of tintinnids and other microzooplankton were studied in the Damariscotta River estuary, Maine, USA during the period March 1981 to May 1982. Peak tintinnid abun-Expand
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