Biodiversity of diversity of spiders (Aranaea) in Tangub City, Philippines

This study aimed to assess the biodiversity of spiders and their habitat complexity in Tangub City, Misamis Occidental, Philippines. The study utilized sweep netting and visual searching in established transect-quadrats on four sites namely; Mangrove forest of Barangays Maloro and Silangga, the City Courtyard and Northwestern Mindanao State College of Science and Technology from October 25-November 20, 2019. Results indicated a high degree of spider (Aranaea) diversity in Tangub City. The highest species diversity was found in site 4 Sulaton Island, Silangga (H=2.8705) and the lowest species diversity (H=2.3230) and richness (13 taxa) was found in the City Courtyard. A total of 388 individual spiders under 8 families, 11 genera and 23 species were trapped and identified. Physical parameters such as air temperature and relative humidity were observed as directly affecting the abundance of spiders in each habitat. Fractal analyses indicated all sites had low differences in terms of the fractal index and therefore fractal analysis could not be utilized as metric for assessing diversity in this study.