prprodpi 94jan 08jan94-07feb94 Photosynthesis-Irradiance phytoplankton data. Includes raw numbers in order to calculate the relationship. Scintillation counts and light measurements for productivity measurements. Date, Station, Depth (meters), DPM's, PAR Irradiance not calculated due to budgetary constraints. Calculation of actual productivity and p/i parameters will require the use of info which exists only as hardcopy logs in Barbara Prezelin's lab. If you wish to access these logs, contact Barbara Prezelin. Usually 1 depth profile per station. 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. Shipboard stations taken at pre-defined ship locations. southern ocean, lter, marginal ice zone, primary productivity, phytoplankton, carbon uptake, photosynthesis, palmer peninsula Tab-delimited ASCII. on-line LTER ~lter/lterdata/94jan/prprodpi/* 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, Allen Matlick 6/19/92 -info file 12/11/96 -data 12/12/96 - datainfo - Matlick Allen Matlick