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- W2736202352 abstract "We investigated seasonal variations in some physicochemical regime, bacterioplankton and mycoplankton biotypes of Imo River in a Niger Delta region of Nigeria. Seven sampling points were established along the middle reaches of the river and in situ measurements and collection of water samples for laboratory analyses made according to standard methods. Correlation coefficient (r) was used in estimating relationships between variables while pairwise comparisons in seasonal variation were made with the studentized t-test. Large temporal variations were observed in turbidity (11.00-279.00; Mean= 96.70 ± 9.3 NTU), sulphate (0.90-8.10; mean= 4.35 ± 0.25 mg/L) and dissolved oxygen (DO) (4.50-8.81; mean= 6.96 ± 0.14 mg/L). Significant seasonal variations were observed in sulphate ion concentrations at P<0.05 only. More total heterotrophic bacteria (THB) (range= 2.30 x 102-2.8 x 102 cfu/mL) and total heterotrophic fungi (THF) counts (range= 5.0 x 101-7.5 x 101 cfu/mL) were recorded in the wet, while more hydrocarbon utilizing bacteria (HUB) counts (range= 8.50 x 101-1.00 x 102 cfu/mL) were recorded in the dry seasons. There was significant seasonal variations in THB, THF and HUB at P<0.05. At P<0.05, THC (r=0.633) and nitrate (r=0.623) correlated with the HUF. It was concluded that the study ecosystem was stable, with interacting physicochemical characteristics and seasonally variable bacterio- and myco-plankton compositions in a hydrocarbon rich ecozone. Keywords: Bacterioplankton, Mycoplankton, Imo River, Niger Delta, Hydrocarbonoclastic microorganisms." @default.
- W2736202352 created "2017-07-21" @default.
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- W2736202352 date "2017-03-18" @default.
- W2736202352 modified "2023-09-28" @default.
- W2736202352 title "Seasonal variations in physicochemical regime, bacterioplankton and mycoplankton of Imo River in Etche, Nigeria" @default.
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