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Initial Climate Change Scenario For The Western United States, United States Department Of The Interior, Bureau Of Reclamation
Initial Climate Change Scenario For The Western United States, United States Department Of The Interior, Bureau Of Reclamation
Meterology
Observations of atmospheric carbon dioxide (CO2) concentrations in recent decades have shown an accelerating upward trend due mainly to burning of fossil fuels. Physical considerations indicate that observed and projected increases in the concentrations of CO2 and other greenhouse gases in the atmosphere will lead to significant global warming. Previous authors have followed both empirical and theoretical approaches to develop scenarios for changed climate conditions. The most common empirical approach is the use of analogs of global warming drawn from historical records and paleoclimates. The principal theoretical approach involves the interpretation of output for general circulation models …
Development And Evaluation Of Tracer Particles For Use In Microzooplankton Herbivory Studies, Mary Putt
Development And Evaluation Of Tracer Particles For Use In Microzooplankton Herbivory Studies, Mary Putt
OES Faculty Publications
Two methods of preparing algae for use as tracer particles in single species measurements of microzooplankton herbivory were evaluated. Algae were either heat-killed and labelled with 5-(4,6-dichlorotriazin-2-yl amino fluorescein) (DTAF) (Rublee & Gallegos 1989; Mar, Ecol. Prog. Ser. 51: 221-227) or stained with hydroethidine (HYD). Both DTAF and HYD-stained algae were readily visible within the digestive vacuoles of most microzooplankton collected in estuarine and coastal waters of Massachusetts (USA) and preserved with Lugol's iodine. However, DTAF was ineffective at staining several chromophytic algae and the heat-kill process reduced cell volume by ≥ 50% in several of the algae which were …