leucine 93aug 26aug93-25sep93 Microheterotrophic bacterial production estimated by 3Hleucine from discrete water column samples. station event bottle(#) depth(m) protein(nCi/l/hr) bacterial_production(ngC/l/hr) bacterial_production(ngC/l/hr) bacterial_production(mgC/m3/d) Palmer Stations C and E, all "even" grid stations from BOPS bottles, most GoFlo and under-ice stations Seawater incubated at 0*C with 3H-leucine for 6 hrs. then filtered onto a glass fiber filter and stored at -20*C. 3H leucine incorporated into protein determined by acid precipitaion and base hydolysis. Leucine incorporation into protein is extrapolated to bacterial production using empirical laboratory-derived relationships. 3H leucine uptake is a measure of heterotrophic bacterial production. lter, southern ocean, antarctic, bacterial production Univ. HI, Marine Science Bldg. David M. Karl David M. Karl G. Tien, T. Rust G. Tien