Research Journal of Environmental Sciences1819-34122151-8238Academic Journals Inc.10.3923/rjes.2010.101.114O. OmoigberaleMichael E. OgbeibuAnthony 2201042The impact of Dubri Oil Company operations on the macrobenthic
invertebrate fauna of Osse River, Edo State (Nigeria) was investigated
between July 2000 and June 2002. Fifty-seven taxa which were well represented
in the five stations were encountered. Ephemeroptera accounted for 26.30%,
Decapoda (21.53%), Diptera (17.04%), Annelida (11.31%), Odonata (6.56%),
Nematoda (1.45%), Coleoptera (0.75%) and Hemiptera (0.28%) of the total
number of organisms collected from the study stations. The family Naididae
(Annelida), Alpheidae (Decapoda), Chironomidae (Diptera), Baetidae (Ephemeroptera)
and Libellulidae (Odonata) were the most widespread. The overall abundance
of the macrobenthic invertebrate fauna was significantly different (p<0.05)
among the study stations. A posteriori Duncan Multiple Range (DMR) test
showed that the abundance was significantly higher (p<0.05) in stations
1, 2 and 5 than the other stations (3 and 4) which were not significantly
different (p>0.05) from each other. The diversity indices revealed
that taxa richness was highest in station 2 and lowest in station 5, while
Shanon Wiener and Evenness indices were higher in stations 1, 2 and 4
than those of other stations. The temporal dynamics showed higher macrobenthic
invertebrate fauna abundance during the dry season months than the rainy
season. The impact of crude oil exploration on macrobenthic invertebrate
fauna is reported.]]>Bidwell, A. and N.V. Clarke, 197742104110Bishop, J.E.,1973Brinkhurst, R.O.,19662131166Chapman, P.M. and J. Anderson, 20051163173Egglishaw, H.J., 196433463477Elliot, J.M., 19772nd Edn.,pp: 159pp: 159Ezemonye, L.I.N., J.O. Olomukoro and E. Igbinosun, 20045181192Hynes, H.B.N., 196157344388Magurran, A.E.,1988Reprint Edn.,pp: 179pp: 179Mellanby, H.,19636th Edn.,pp: 308pp: 308Needham, J.G. and P.R. Needham,19625th Edn.,pp: 96pp: 96Osemwegie, F.O. and J.O. Olomukoro,200415279296Ogbeibu, A.E. and A.B.M. Egborge,19954127Ogbeibu, A.E. and M.O. Omoigberale,200547280Ogbeibu, A.E. and B.J. Oribhabor,20023624272436Ogbeibu, A.E. and R. Victor, 19895685100Olomukoro, J.O. and A.B.M. Egborge,200315279296Olomukoro, J.O. and L.I.N. Ezemonye, 200742111Olomukoro, J.O. and R. Victor, 199925864Omoigberale, M.O. and A.E. Ogbeibu,200542732Omoigberale, M.O. and A.E. Ogbeibu, 200750266272Paterson, C.G. and C.H. Fernando, 197027213232Pennak, R.W., 19532nd Edn.,pp: 769pp: 769Powell, C.B.,19801980pp: 212225Rosenberg, D.M. and V.H. Resh,19931993pp: 1-9pp: 1-9Timm, H. and T. Mois, 200830138140Ward, H.B. and G.C. Whipple,19592nd Edn.,pp: 124pp: 124Williams, D.D. and B.W. Feltmate,1992Zar, J.H.,19842nd Edn.,Pages: 718Pages: 718