References
- Crooke , W. M. and Simpson , W. E. 1971 . Determination of ammonium of Kjeldahl digests of crops by an automated procedure. . Journal of the science of food and agriculture , 22 : 9 – 10 .
- Downes , M. T. 1978a . An automated determination of low reactive phosphorus concentrations in natural waters in the presence of arsenic, silicon and mercuric chloride. . Water research , 12 : 743 – 745 .
- _____ . 1978b . An improved hydrazine reaction method for the automated determination of low nitrate levels in freshwater. . Water research , 12 : 673 – 675 .
- Foree , E. G. , Jowell , W. J. and McCarty , P. L. Advances in water pollution research . Proceedings of the 5th International Conference of the Inter‐nation Association on Water Pollution Research . London. The extent of nitrogen and phosphorus regeneration from decomposing algae , Edited by: Jenkins , S. H. Pergamon Press .
- Gabrielson , J. O. , Birch , P. B. and Hamel , K. S. 1983 . Decomposition of Cladophora. II. In vitro studies of nitrogen and phosphorus regeneration. . Botanica marina , 26 : 173 – 179 .
- Golterman , H. L. 1975 . Physiological limnology , Developments in water science, 2 Amsterdam : Elsevier .
- Handbook of environmental data and ecological parameters . 1979 . Volume 6 of environmental sciences and applications , Volume 6 , 1162 London : Pergamon Press .
- Matsunaga , K. 1981 . Studies on the decompositive processes of phytoplanktonic organic matter. . Japanese journal of limnology , 42 : 220 – 229 .
- McColl , R. H. S. 1972 . Chemistry and trophic status of seven New Zealand lakes. . New Zealand journal of marine and freshwater research , 6 : 399 – 447 .
- Otsuki , A. and Hanya , T. 1972 . Production of dissolved organic matter from dead green algal cells. I. Aerobic microbial decomposition. . Limnology and oceanography , 17 : 248 – 257 .
- Viner , A. B. 1984 . Resistance to mixing in New Zealand lakes. . New Zealand journal of marine and freshwater research , 18 : 73 – 82 .
- Viner , A. B. and Kemp , L. 1983 . The effect of vertical mixing upon the phytoplankton of Lake Rotongaio (July 1979‐January 1981). . New Zealand journal of marine and freshwater research , 17 : 407 – 422 .
- Wetzel , R. G. 1975 . Limnology , Philadelphia : W. B. Saunders .
- White , E. 1983 . Lake Eutrophication in New Zealand — a comparison with other countries of the Organisation for Economic Co‐operation and Development. . New Zealand journal of marine and freshwater research , 17 : 437 – 444 .