The effects of cadmium on plankton populations under different manurial treatments
Recovery of plankton populations from exposure to 1 mg/l of cadmium was studied in an outdoor bioassay using inorganic fertilizers, cow dung or poultry litter as nutrient additions. Although 99% oj the plankton populations were eliminated immediately after exposure to cadmium, both zoo- and phytop...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universiti Putra Malaysia Press
1995
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3393/1/The_Effects_of_Cadmium_on_Plankton_Populations_under_Different_Manurial.pdf http://psasir.upm.edu.my/id/eprint/3393/ http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2018%20(2)%20Aug.%201995/02%20JTAS%20Vol.18%20(2)%201995%20(Pg%2089-94).pdf |
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| Institution: | Universiti Putra Malaysia |
| Language: | English |
| Summary: | Recovery of plankton populations from exposure to 1 mg/l of cadmium was studied in an outdoor bioassay using
inorganic fertilizers, cow dung or poultry litter as nutrient additions. Although 99% oj the plankton populations
were eliminated immediately after exposure to cadmium, both zoo- and phytoplankton densities began reappearing
at a slow rate from Day 15 of treatment. Zoo plankton populations of the treated vats became numerically
comparable to the control within 55 days of treatment. Poultry litter effected a quicker recovery of zooplankton
populations. However, phytoplankton populations did not recover from the cadmium stress in any of the nutrient
treatments even after 55 days. Dissolved cadmium was present in solution up to Day 15, while in the other
treatments it persisted up to 25 days. |
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