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The physico-chemical as well as Macro invertebrate characteristics of Anya stream in Amaoba community, Abia state was
studied over a period of 5 months. The stream was investigated in 3 different outlined stations based on degree of human
interaction and the plant community along the length of the stream. The result indicated that human interaction influence to an
extent the physico-chemical parameter of the water. The phosphate value recorded was between 0.67±0.22 to 0.77±0.18 mg/l.
Total hardness ranged between 7.66±0.06 to 20.33±9.16mg/l while dissolved oxygen recorded 0.73±0.13 to 3.76±0.56 mg/l. The
rainfall amount recorded within the period of study had influence on some of the parameters. The surface water temperature
was lower in the wet months than in the dry ones. The nitrate concentration increased with an increase in the rainfall amount
recorded. All parameters assessed except for the pH and total phosphate fell within the acceptable standard of World Health,
Organization (WHO), Standard of Nigeria (SON), European Economic Community (EEC), Federal Ministry of Environment
(FMENV).There was significant difference in the monthly concentrations of theses chemical parameters when subjected to
Duncan and LSD analysis. However when the various stations were analyzed, there was no significant difference. A check list
of the planktonic abundance and macro invertebrates revealed a total of five zooplankton species, four phytoplankton and six
macro invertebrates. The zooplanktons encountered include Water flea, Branchionus plicatilis, Cyclops sp., calanus hyperboreus
and Moina sp. The phytoplanktons included the following species Spirogyra, Euglena, Green algae, Blue-green algae while the
macroinvertebrates were Water strider, Dragon flies, Damsel flies, Beetles, Water bugs, immature stages of Mosquitoes (larva,
pupa) and the adults respectively. Chlorophycene (spirogyra), had the highest cell density of phytoplankton with a percentage
of 100.0% obtained from a total of 184 cells/ml from four broad groups of phytoplankton, based on the result and following
standard criteria, the stream could be said to be suitable for domestic, industrial and agricultural uses, however basic treatment
can help improve the portability of water especially for drinking.
Biography
Okore Oghale Oâ??woma born, raised and trained in Nigeria. Oghale had her first Degree in Zoology from the University of Benin, Benin City, Nigeria. As a young and
explorative lady, eager to learn and acquire more knowledge, she proceeded to the Michael Okpara University of Agriculture, Umudike, Abia state Nigeria where
she had her M.Sc. Entomology under the tutelage of Prof. M. C. Eluwa ; the same University she completed her National Youth Service. She was later employed
in the University as an Academic staff. Oghale proceeded for the Doctorate degree in same University in the field of Entomology with interest in Entomophagy. Her
interest in the study of insects is overwhelming. Impacting knowledge to others is one of her greatest delights.
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