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All Journal Jurnal Entomologi Indonesia Journal of Applied Agricultural Science and Technology
Ulka Sri Asih
PT. Tolan Tiga Indonesia (SIPEF GROUP)
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Keanekaragaman laba-laba pada perkebunan kelapa sawit yang berbatasan dengan hutan Ulka Sri Asih; Yaherwandi Yaherwandi; Siska Efendi
Jurnal Entomologi Indonesia Vol 18 No 2 (2021): Juli
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.18.2.115

Abstract

Oil palm plantations bordering forests were thought to affect the biotic components that make up the diversity of ecosystems, especially species with high mobilization and adaptability, such as spiders. This study aims to identify spiders found in oil palm plantations and analyzing diversity and evenness at various distances of oil palm plantations from the forest. Observations of spiders were carried out on oil palm plantations bordered by forests in Nagari Gunung Selasih and Sungai Kambut, Pulau Punjung District, Dharmasraya Regency, West Sumatra Province. In oil palm plantations, a one km long transect line was made from the forest edge. In the sample plots, spiders were observed using a pitfall trap, knockdown, and hand collecting. Data were analyzed using the Shannon-Wiener diversity and evenness index. The highest spider species diversity index was found at a distance of 100–300 m from the forest, respectively 3.06, 3.05, and 3.11. The same is true for the highest evenness index at a distance of 100–300 m from the forest, respectively, namely 0.94, 0.94, and 0.95. In general, the results of this study indicate that the presence of forest bordering the forest is thought to affect spiders in oil palm plantations.
The Influence of Distance Between Oil Palm Plantations and Forest Ecosystems on Spider Diversity Ulka Sri Asih; Yaherwandi Yaherwandi; Siska Efendi
Journal of Applied Agricultural Science and Technology Vol. 7 No. 3 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i3.137

Abstract

Forest conversion to oil palm plantations forms a unique agroecosystem. Forests known as a source of biodiversity are bordered by oil palm plantations with low diversity. The location of the oil palm plantation, which is directly adjacent to the forest, is thought to affect the diversity of spiders found in the agroecosystem. This study aimed to determine the effect of the distance between oil palm plantations and forests on spider diversity. The research was conducted at oil palm production centers in West Sumatra Province, Indonesia, namely Dharmasraya Regency, Pulau Punjung District, Nagari Gunung Selasih, and Sungai Kambut. In oil palm plantations, 10 sample plots (1 m x 1m) were determined along the transect line, 1 km from the forest's edge. Spiders were collected using the pitfall trap, knockdown, and hand collection methods. The spider diversity was analyzed by applying the diversity and evenness index by Shannon-Wiener. The results showed that the distance of the oil palm plantation from the forest affected the diversity of spiders. The closer the oil palm plantation is to the forest, the higher the diversity of spiders. The results of this study can be one of the considerations for oil palm business actors to maintain forests as conservation areas for organisms that provide various ecosystem services, including spiders as predators of oil palm pests.
Co-Authors Efendi, Siska Yaherwandi