0 REUTER, JE LOEB, SL AXLER, RP CARLTON, RG GOLDMAN, CR 1985 TRANSFORMATIONS OF NITROGEN FOLLOWING AN EPILIMNETIC NITROGEN-FERTILIZATION IN CASTLE-LAKE, CA .1. EPILITHIC PERIPHYTON RESPONSES ARCHIV FUR HYDROBIOLOGIE STUTTGART E SCHWEIZERBART'SCHE VERLAGS 102 4 425-433 0003-9136