EEGLE Nitrogren Cycling, March 2000 Surv-2000-070 Cruise, Lake Guardian Net NH4+ and amino acid (AA) uptake (positive numbers) and production (negative numbers) under natural light or dark conditions Ammonium regeneration and total uptake(light and dark) with standard errors(SE) "P" in station name indicates PO4 addition experiment Rates in uM h-1 Net NH4+ Net NH4+ NH4+ NH4+ Total NH4+ Total NH4+ Net Net Cruise Op # Station Uptake(L) SE Uptake(D) SE Reg(L) SE Reg(D) SE Uptake(L) SE Uptake(D) SE AA(L) SE AA(D) SE Mar-00 G2000071.11 SJRM-3 0.057 0.002 0.011 0.002 0.011 0.004 0.019 0.006 0.057 0.003 0.020 0.007 0.005 0.001 0.005 0.001 Mar-00 G2000071.11 SJRM-3P 0.059 0.002 0.011 0.001 0.024 0.005 0.019 0.003 0.069 0.005 0.022 0.003 0.006 0.002 0.007 0.001 Mar-00 G2000071.13 J15-5 0.012 0.001 0.008 0.001 0.004 0.003 0.002 0.003 0.007 0.003 0.005 0.004 0.032 0.001 0.029 0.001 Mar-00 G2000071.13 J15-5P 0.006 0.001 0.002 0.001 0.006 0.003 -0.015 0.011 0.011 0.003 -0.012 0.011 0.025 0.002 0.030 0.001 Mar-00 G2000071.05 J30-5 0.018 0.000 0.009 0.002 0.005 0.002 0.002 0.001 0.006 0.003 0.005 0.003 -0.001 0.001 0.003 0.001 Mar-00 G2000071.05 J30-5P 0.003 0.003 0.000 0.001 0.000 0.002 0.004 0.005 0.005 0.001 0.005 0.005 0.000 0.001 0.004 0.002 Mar-00 G2000072.15 NB20-10 0.031 0.003 0.014 0.004 0.006 0.002 0.007 0.002 0.008 0.003 -0.001 0.002 0.007 0.001 0.004 0.003 Mar-00 G2000072.15 NB20-10P 0.007 0.004 0.005 0.006 0.006 0.002 0.008 0.003 0.007 0.004 0.009 0.004 -0.002 0.005 0.002 0.001 Mar-00 G2000073.04 G15-5 -0.002 0.003 -0.006 0.002 0.004 0.006 0.011 0.011 0.008 0.009 0.013 0.013 -0.011 0.006 -0.007 0.000 Mar-00 G2000073.04 G15-5P -0.005 0.001 -0.006 0.002 0.003 0.003 0.002 0.001 0.006 0.004 0.004 0.002 -0.004 0.010 0.003 0.009 Mar-00 G2000072.24 G45-5 0.008 0.001 0.009 0.001 0.000 0.004 -0.004 0.008 0.001 0.003 0.002 0.005 -0.001 0.005 -0.007 0.003 Mar-00 G2000072.24 G45-5P 0.004 0.004 0.014 0.002 0.006 0.003 0.004 0.005 0.005 0.002 0.006 0.005 -0.007 0.002 -0.007 0.001 Mar-00 G2000074.08 C15-5 -0.005 0.001 -0.010 0.001 0.011 0.007 -0.001 0.007 0.013 0.010 -0.001 0.008 -0.019 0.002 -0.020 0.001 Mar-00 G2000074.08 C15-5P -0.012 0.004 -0.008 0.001 -0.006 0.011 0.009 0.009 -0.003 0.015 0.008 0.009 -0.018 0.001 -0.017 0.002 Mar-00 G2000074.19 C80-10 0.007 0.002 0.002 0.002 0.004 0.001 0.012 0.005 0.007 0.003 0.012 0.006 -0.003 0.003 -0.005 0.001 Mar-00 G2000074.19 C80-10P -0.010 0.001 -0.010 0.001 0.008 0.011 0.007 0.005 0.017 0.011 0.008 0.005 -0.013 0.008 -0.003 0.001