Distribution and abundance of benthic macroinvertebrate in lande stream, tumu, gombe state, Nigeria

Abundance and distribution of Macroinvertebrate of Lande Stream, Tumu,Gombe State were evaluated. Three sampling sites (A, B, and C) were selected. Macro invertebrates sampled fortnightly for three months (September-November, 2019). The collected Macro invertebrates were identified using taxonomic keys. Simpson’s index was employed to determine the abundance in each sampling station.The results showed a total of 189 individual species of Macroinvertebrate in 7family among the five invertebrates taxa of Plecoptera, Coleoptera, Hemiptera, Odonata and Mollusca. The taxa abundance of LandeStream arranged in descending trend as Mollusca> Odonata> Coleoptera> Hemiptera>Plecoptera with respective total invertebrates values of 37.73%, 25.4%, 20.63%, 8.47% and 7.94%. The Simpson’s Species diversity index for the three sampling stations of A, B and C were 0.922, 0.9004 and 0.8613 respectively (Table 2, Figure 5) while the Dominance index of A, B and C were 0.078, 0.0996 and 0.1387 respectively. The Macro invertebrate abundance and distribution observed in this study showed Lande Stream can support the survival, growth and reproduction of organisms and has a potential for broaden ecological studies.