Impact of oil palm cultivation on micro-arthropod diversity and nutrient status in the soil at a university in Nigeria

Abstract :

Oil palm plantations may alter soil nutrients and biodiversity in either ways. The impact of oil palm plantation on micro-arthropods abundance and diversity were evaluated and the soil nutrient status was ascertained. Soil samples were taken from a seven year old palm plantation and in a contiguous forest with a bucket-type auger. Micro-arthropods were extracted from the soils with a modified Berlese-Tullgren funnel. The micro-arthropods were extracted and identified with a dissecting microscope using dichotomous keys. Temperature, pH and moisture content of the soil samples were measured in situ, the Total Organic Carbon, and Total Organic Matter were determined with Walkley-Black Method. The nitrogen, phosphorus, and potassium contents of the soils were ascertained with Atomic Absorption Spectroscopy. A total of 844 micro-arthropods were extracted from the soil samples, they were grouped in 7 orders and 32 species. The order Oribatida was the most abundant (60%), followed by Hymenoptera (16%), Mesostigmata (10%), Collembola (7%) Coleoptera (4%), Diplura (2%), and Isopoda (1%). The essence of higher abundance of microarthropods at the contiguous forest, similar species diversity in both locations and higher levels of soil nutrients at the plantation were discussed.

Keyword :

Oil palm plantation, micro-arthropods, species diversity, soil nutrients, Nigeria

Author(s) : Gbarakoro, T. N., Abajue, M. C., Obi, J. C.
Downloads : 11
Published Issue : 2023 Vol. 18 Number 1

2023 Vol. 18 Number 1