A SURVEY OF PHYSICO-CHEMICAL CHARACTERISTICS AND MACROINVERTEBRATE COMMUNITIES OF THREE CONTRASTING STREAMS IN DADIN KOWA, GOMBE STATE, NIGERIA
Keywords:
Physico-chemical, macroinvertebrates, streams, land-use, DadinkowaAbstract
A survey of physico-chemical characteristics and macroinvertebrate communities in three
contrasting streams in Dadin Kowa was carried out between March and June 2016. Physicochemical
parameters (i.e. temperature, pH, conductivity, turbidity, depth and width) and
macorinvertebrates were sampled forthnightly. It was observed that physico-chemical
characteristics of the three streams did not differ much except for conductivity which was
highest in stream B and lowest in stream A. Record showed five major taxa (Odonata,
Coleoptera, Hemiptera, Mollusca and the amorphous species) in the 3 streams. The
macroinvertebrate community composition observed were; Gomphidae 52.38% , Dyticidae
28.57%, Notonectidae 9.52%, Melanoides tuberculatus 7.14% and Amorphous species
2.38%. Results obtained reveals that macroinvertebrate community composition differed
between agricutural and urban streams. Land use activities taking place in the area might
have influenced these changes. There is the need to regulate the use of agrochemicals and
methods of effluents discharge into aquatic system.