Abstract
Bogani Nani Wartabone National Park is a tropical low land rain forest. This region has high diversity of arthropods, i.e. spider. The aims of this study was to analyze the Community structure of spiders of spiders (Arachnida: Araneae) in various types of habitat at Bogani Nani Wartabone National Park North Sulawesi. Sampling was carried out at three habitat types, namely primary, secondary, and farm. The research was conducted from March to May 2014 by using pitfall trap (to collect spiders that move on the ground) and sweep net (to collect the spideron vegetation canopy). The number of spiders obtained during the study of was 1267 speciments. The specimens collected are consists 15 families, 71 genera, and 129 morphospecies. The Family which most individual abundance is family Tetragnathidae and the least was Ctenizidae. Salticidae were the most common family of species (30 species), while the least were Agelenidae, Ctenidae and Ctenizidae where each family has one species. Abundance, richness, diversity and evenness of species was higher in the farm, while the lowest in the secondary forest. The highest similarity index of spider communities was between primary forests and secondary forests. The results of this research can be used as a diversity database of spiders for conservation strategies in North Sulawesi.
Highlights
Bogani Nani Wartabone National Park is a tropical low land rain forest
The research was conducted from March to May 2014 by using pitfall trap and sweep net
The number of spiders obtained during the study of was 1267 speciments
Summary
Pada setiap plot dibuat empat transek dengan panjang 50 m dan jarak antar transek 15 m. Pengambilan sampel menggunakan perangkap sumuran (pitfall trap) dan jaring ayun (sweep net). Perangkap sumuran yang digunakan dalam penelitian ini terbuat dari gelas plastik (volume 220 ml, diameter = 5,3 cm dan tinggi = 9,8 cm) yang ditanam di tanah (Uniyal & Hore 2008). Sampel laba-laba yang terjebak disimpan dalam tabung pelastik yang telah diisi alkohol 95%. Pengambilan sampel dengan menggunakan jaring ayun dilakukan dengan mengayunkan jaring sebanyak 100 kali ayunan pada setiap transek. Pengambilan sampel laba-laba dengan perangkap sumuran dan jaring ayun dilakukan setiap bulan selama 3 bulan. Sampel yang berasal dari perangkap sumuran dan jaring ayun kemudian diidentifikasi sampai level morfospesies dan dihitung jumlah individunya.
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