Keywords
Population
indices
protected
distribution
How to Cite
Abstract
The study evaluated the bird’s species diversity in Bodel forest reserve of Gashaka Gumti National Park (GGNP). The persistent decline in birds’ species population and their diversity posed a great challenge to its conservation, hence the need for the study in the location. Systematic sampling method was employed, in which three (3) transects of 1 km in length were laid at an interval of 200 m apart in the study site. Species of bird sighted along the transect were observed and recorded. Two diversity indices, Shannon-Weiner’s and Simpson were used to evaluate the bird’s species diversity. The species evenness was determined using evenness equation E = H’/Ln(S). Likewise, means, standard deviation and Coefficient of variation was estimated. The results on bird’s species distribution revealed a total of 788 birds, belonging to 73 species and 26 families in the study area. Lunchura cucullata had the highest frequency of 82 birds (10.4%), followed by Ploceus cuculatus with 50 birds (6.3%), while the least frequency of 1(0.1%) was recorded for Eliminilongi cauda. The two diversity indices revealed that bird species in Bodel forest reserve of Gashaka Gumti National Park are highly diverse. Simpson’s index gave a value of 0.97, while Shannon-Weinner’s index gave a value of 3.79 of species diversity in the reserve. T-test conducted shows that the two indices were significant in measuring bird’s species diversity, but, Shannon-Weiner’s index is mostly preferred due to its lower mean standard error (0.005). The study concludes that Bodel Forest reserve of Gashaka Gumti National Park is capable of sustaining a large population of bird species, if human interference is curtailed. Since birds occupy many tropic levels in a food chain, their occurrence should be protected and conserved as they are of helpful in environmental health indicator, pollinators, seed dispersal and as agent of pest control
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