Dinamika Populasi Oribatida pada Area Perkebunan Kelapa Sawit di Kecamatan Bajubang Kabupaten Batanghari Jambi

Abstract

Oribatida merupakan salah satu kelompok fauna tanah yang penting. Mereka memiliki peran dalam dekomposisi bahan organik di tanah. Tujuan penelitian ini untuk mempelajari dinamika populasi Oribatida dengan mengukur kelimpahan dan keanekaragaman Oribatida pada area perkebunan kelapa sawit dan mempelajari hubungan Oribatida dengan beberapa sifat tanah seperti C dan N total tanah, kadar air, suhu dan pH tanah pada area perkebunan kelapa sawit di Kecamatan Bajubang, Batanghari, Jambi.Contoh tanah dan serasah diambil dari empat lokasi yang berbeda (25 m x 25 m) dan dari setiap lokasi diambil masing - masing tiga contoh tanah pada gawangan mati dan gawangan hidup (berukuran 16 x 16 cm, kedalaman 5 cm). Pengambilan sampel ini dilakukan setiap bulan dari bulan November 2013 sampai Mei 2014. Sampel tersebut diekstrak menggunakan Kempson extractor. Identifikasi Oribatida dilakukan sampai tingkat famili dan indeks keanekaragamannya ditentukan menurut Shannon’s diversity index.

Oribatid mites are one of the important soil fauna groups. They have an important role in decomposition of organic matter in the soil. The objection of this research was to study population dynamics of Oribatid mites through determining the abundance and diversity of Oribatid mites and to study the correlation of Oribatid mites with some of soil properties such as total C and N, water content, temperature and soil acidity in oilpalm plantation at Bajubang, Batanghari, Jambi. Soil and litter samples were taken from four different locations (25 m x 25 m) and from each locations three samples were taken from litter lanes and open lanes, respectively (the size was 16 x 16 cm with a depth of soil was 5 cm). Samples weretaken every month, from November 2013 to May 2014. The samples were extracted using Kempson extractor. Identification of Oribatid was done to family leveland the diversity of Oribatid mites was measured using Shannon’s diversity index.