230
References
Yan N D (1986) Empirical prediction of crustacean zooplankton biomass in nutrient-poor
Canadian shield lakes. Can J Fish Aquat Sci 43: 788-796
Yan N D Mackie G L Boomer D (1989) Seasonal patterns in metal levels of the net plankton of
three canadian shield lakes. Sci Total Environ 87/88: 439-461
Zaffagnini F (I987) Reproduction in Daphnia. Mem 1st Ital Idrobiol45: 245-284
Zaret T M (1980) Predation and freshwater communities. Yale University Press, New Haven
Zeuthen E (1953) Oxygen uptake as related to body size in organisms. Q Rev BioI 28: 1-12
Zevenboom W Mur L R (1980) N2-fIxing cyanobacteria: why they do not become dominant in
Dutch hypertrophic lakes? In: Barica J Mur L R (eds) Hypertrophic ecosystems. Dr W Junk,
The Hague, pp 123-130
References
Yan N D (1986) Empirical prediction of crustacean zooplankton biomass in nutrient-poor
Canadian shield lakes. Can J Fish Aquat Sci 43: 788-796
Yan N D Mackie G L Boomer D (1989) Seasonal patterns in metal levels of the net plankton of
three canadian shield lakes. Sci Total Environ 87/88: 439-461
Zaffagnini F (I987) Reproduction in Daphnia. Mem 1st Ital Idrobiol45: 245-284
Zaret T M (1980) Predation and freshwater communities. Yale University Press, New Haven
Zeuthen E (1953) Oxygen uptake as related to body size in organisms. Q Rev BioI 28: 1-12
Zevenboom W Mur L R (1980) N2-fIxing cyanobacteria: why they do not become dominant in
Dutch hypertrophic lakes? In: Barica J Mur L R (eds) Hypertrophic ecosystems. Dr W Junk,
The Hague, pp 123-130