Systematics and diversity of spiders in the Northwestern slope of Mt. Arayat [Philippines]
2001
Endraca, G.D. | Totaan, E.V.
A descriptive study was undertaken generally to assess the systematics and diversity of spiders in the northwestern slope of Mt. Arayat. Atmospheric analysis was done in ten stations which were identified through the quadrant and transect line methods. The collected and preserved species were photographed and identified using a taxonomic key and upon verification at the Museum Of Natural History, UP Los Banos in consultation with Dr. Augusto Sumalde, Director of the Museum. Analysis of population was done using the diversity indices. The study revealed the following: 1.) there were 20 species belonging to 16 genera in 9 families; 2.) population fluctuation was attributed to the climatic factors existing during the time of study and other factors such as landslides, and overflowing of the Taqui creek that resulted to death and migration of spiders from the collection site; and 3.) Oxyopes javanus appeared to be the most diverse having a relative density of 8.43% and species diversity of 0.087. This species was the best in terms of the parameters with 727 individuals that were found in every type of vegetative habitat from grasses to trees
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