Adams, F.S., Colf, H., Jr., and Massie, L.B.: 1973, ‘Element Constitution of Selected Aquatic Vascular Plants from Pennsylvania: Submerged and Floating Leaved Species and Rooted Emergent Species’, Environ. Pollut.
5, 117–147.
Google Scholar
Arnon, D.I.: 1949, ‘Copper Enzyme in Isolated Chloroplasts Polyphenoloxidase in Beta vulgaris’, Plant Physiol.
24, 115.
Google Scholar
Burton, M.A.S.: 1986, ‘Biological Monitoring of Environmental Contamination (Plants)’, prepared by Monitoring and Assessment Research Centre, Kings College, Univ. of London, pp. 175–188.
Charpentier, S., Garnier, J., and Flaugnatti, R.: 1987, ‘Toxicity and Bioaccumulation of Cadmium in Experimental Cultures of Duckweed Lemna polyrrhiza L.’, Bull. Environ. Contam. Toxicol.
38, 1055–1061.
Google Scholar
Corradi, M., Realini, M., and Bassi, M.: 1987, ‘Morphological Alterations Induced by Cr+6 in Fresh Water Plants’, 14th Int. Bot. Congr. Berlin, Abst., 407 pp.
Environmental Protection Agency: 1975, ‘Test Methods for Assessing the Effects of Chemicals on Plants’, in: R. Rubinstien and J. Smith (Eds.), EPA-560-17-008 Final Report, U.S. Environmental Protection Agency, Washington DC.
Google Scholar
Glandon, R.P. and McNabb, C.D.: 1978, ‘The Uptake of Boron by Lemna minor’, Aquat. Bot.
4, 53–64.
Google Scholar
Guilizzoni, P.: 1991, ‘The Role of Heavy Metals and Toxic Materials in the Physiological Ecology of Submerged Macrophytes’, Aquat. Bot.
41, 87–109.
Google Scholar
Husak, S., Sladecek, V., and Stadeckova, A.: 1989, ‘Fresh Water Macrophytes as Indicators of Organic Pollution’, Acta Hydrochim Hydrobiol.
17, 693–697.
Google Scholar
Hutchinson, T.C. and Czyrska, H.: 1975, ‘Heavy Metal Toxicity and Synergism to Floating Aquatic Weeds’, Verh. Int. Ver. Limnol.
19, 2102–2111.
Google Scholar
Jain, S.A., Vasundevan, P., and Jha, N.K.: 1989, ‘Removal of Some Heavy Metals from Polluted Water by Aquatic Plants: Studies on Duckweed and Water Velvet’, Biological Wastes
28, 115–126.
Google Scholar
Lisiecki, J.B. and McNabb, C.D.: 1975, ‘Dynamics of Hazardous Elements in Waste Water Ponds’. National Technical Information Service Springfield, VA, PB-248-404.
Google Scholar
Mangi, J., Schmidt, K., Gaines, L., and Turner, P.: 1978, ‘Effects of Chromium on Some Aquatic Plants’, Environ. Pollut.
16, 285–291.
Google Scholar
Nagano, T., Haltori, S., Nagai, T., Ukishima, Y., Unno, C., and Honma, T.: 1975, ‘Studies on Accumulation of Heavy Metals by Chlorella. Influence of Deleterious Concentration of Mercury, Cadmium, and Copper on the Growth of Chlorella’, Jour. Hygiene. Chem.
21, 301.
Google Scholar
Nasu, Y. and Kugimoto, M.: 1981, ‘Lemna (Duckweed) as an Indicator of Waste Pollution. I. The Sensitivity of Lemna Paucicostata to Heavy Metals’, Arch. Environ. Contam. Toxicol.
10, 159–169.
Google Scholar
Nasu, Y., Kugimoto, M., Tanaka, O., and Takimoto, A.: 1983, ‘Comparative Studies on the Absorption of Cadmium and Copper in Lemna Paucicostata’, Environ. Pollut. Ser. A
32, 201–209.
Google Scholar
Nasu, Y., Kugimoto, M., Tanaka, O., and Takimoto, A.: 1984, ‘Lemna as an Indicator of Water Pollution and the Absorption of Heavy Metals by Lemna’, in: Pascoe, D. and Edwards, R.W. (Eds.), Fresh Water Biological Monitoring, Conference Proceedings Pergamon, Oxford, U.K., 113–120 pp.
Ray, S.N. and White, W.J.: 1979, ‘Equisetum Arvense — ‘An Aquatic Vascular Plant as a Biological Monitor for Heavy Metal Pollution’’, Chemosphere
8, 125–128.
Google Scholar
Rodgers, J.H. Jr., Cherry, D.S., and Guthrie, R.K.: 1978, ‘Cycling of Elements in Duckweed (Lemna Perpusilla)’, in: An Ash Settling Basin and Swamp Drainage System Water Res.
12, 765–770.
Google Scholar
Schefler, W.C.: 1969, Statistics for the Biological Sciences, Addison Wesley, London.
Google Scholar
Sculthorpe, C.D.: 1967, The Biology of Aquatic Vascular Plants, Edward Arnold, London, 610 pp.
Google Scholar
Werff, M. van der and Pruyt, M.J.: 1982, ‘Long Term Effects of Heavy Metals on Aquatic Plants’, Chemosphere
11, 727–739.
Google Scholar
Whitton, B.A.: 1979, ‘Plants as Indicators of River Water Quality’, in: G.A. James and E. Lilean (Eds.), Biological Indicators of Water Quality, Wiley, London.
Google Scholar