Temporal effects of forest thinning on spring tails (Entomobryomorpha: Collembola) assemblages at pulai (Alstonia scholaris) forest plantation in Banten

Abstract

Forest thinning affects the forest ecosystem, which changes abundance and diversity of insect species, including ground insects. This study aims to measure and analyze the effects of forest thinning on diversity of Entomobryomorpha at pulai (Alstonia scholaris) forest plantation. The study was carried out in thinning compartment of 15.30 ha. Eight circular sample plots with a radius of 17.8 m were placed systematically in the thinning compartment with a distance between plots of 45 m. A square subplot of 1m x 1m was placed in the center of each circular plotFive pitfall traps were installed in the subplot. Insects were harvested before forest thinning and 7 days after forest thinning. Mann Withney test was used to compare the abundance and composition of morphospecies of Entomobryomorpha before and after forest thinning. Pearson correlation test was used to measure the correlation between insect abundance and environmental factors. Forest thinning decreased the morphospecies composition of Entomobryomorpha and increased the abundance of Entomobryomorpha insects. The abundance of the Entomobryomorpha order correlated significantly with humidity, litter thickness, and canopy cover.

Efek Penyaradan Kayu terhadap Keanekaragaman Ekor Pegas (Collembola) di Hutan Alam Produksi Kalimantan Tengah

“…Penelitian Collembola di Indonesia telah banyak dilakukan pada suatu sistem penggunaan lahan tertentu seperti perkebunan, pertanian, dan pemukiman (Husamah et al, 2016;Erwinda et al, 2016;Warino et al, 2017), dan hanya mengkaji keanekaragaman Collembola pada suatu habitat tertentu (Widrializa et al, 2015;Haneda and Irfani, 2019). Penelitian keanekaragaman Collembola yang terkait dengan kegiatan pengelolaan hutan telah dilakukan dalam rangka revegetasi hutan bekas tambang (Nurtjahya et al, 2007) dan kegiatan penjarangan hutan tanaman (Budiaman et al, 2020). Di sisi yang lain, penelitian dampak penyaradan kayu di Indonesia sebagian besar menitikberatkan pada dampak penyaradan kayu terhadap sifat-sifat fisik tanah dan tegakan tinggal (Matangaran dan Suwarna 2012;Widiyatmo et al, 2014;Suwarna et al, 2014).…”