prprodpi 9394pal 16oct93-3jan94 Primary Production based upon Photosynthesis-Irradiance relationships. Includes raw numbers in order to calculate the relationship. Look at fitted_parameters files for derived variables. Date, Station, Depth (meters), DPM's, PAR Irradiance derived variables not included in this description, but in files under fitted_parameters Station B - every 3 days - one 6-depth profile Station E - every 3 days - one 6-depth profile Station A,C,D - once a week - Surface and Chl a Maximum Other Stations - opportunistic To determine photosynthesis-irradiance (P-I) relationships, twenty- five 1 ml whole water samples for each discrete field sample were inoculated with H14CO3 (final concentration 3-6 mCi/ml) and placed in newly designed photosynthetrons. The photosynthetrons consisted of a milled aluminum block holding fifty 7 ml scintillation vials. Each block had hollowed out channels which circulate an ethylene glycol:water (1:1) solution for temperature control (+/- 0.05oC). The light source was two 75 watt FOS-8 Cool-Lux Inc. lamps (one lamp for each set of 25 samples). In order to eliminate the spectral bias of carbon uptake in white light, light was passed through a CuSo4 filter to eliminate far-red wavelengths of light. Neutral density Plexiglas filters were used to produce a variety of light intensities ranging from 0 to 1300 uEm-2s-1. After a 1.5 hour incubation at in situ temperatures , samples were fixed with 20 uL formalin solution, acidified with glacial acetic acid:methanol (1:30), and heat dried. National Diagnostics Liquiscint scintillation fluor was added and samples were counted on a LKB 1217 scintillation counter. Stations taken at pre-defined nearshore locations by southern ocean, lter, marginal ice zone, primary productivity, phytoplankton, carbon uptake, photosynthesis Tab-delimited ASCII. on-line LTER ~lter/lterdata/9394pal/productivity/data_files/*.* Barbara B. Prezelin Mark Moline Barbara B. Prezelin Allen Matlick Terence Evens, Sandi Roll Terence Evens, Sandi Roll Terence Evens, Sandi Roll Allen Matlick, Mark Moline Mark Moline, Allen Matlick 10/4/94 - datainfo 12/11/96 - data 12/12/96 - datainfo - Matlick Allen Matlick, Mark Moline