In order to select the best method to extract DNA from faeces of gray squirrel(Sciurus vulgaris),the PCR was used to detect sex determining region of the Y gene(SRY) so as to determine the sex ratio of the animals in the region of Sun Island.

Effects of different forest management alternatives on Sciurus vulgaris habitat;

The Hoarding Site Character of Sciurus vulgaris and Nucifraga caryocatactes in Liangshui Nature Reserve;

Behaviors of seed consuming and hoarding behaviors on Korean Pine (Pinus koraiensis) of 4 species,Sciurus vulgaris,Eutamias sibiricus,Nucifraga caryocatactes and Sitta europaea,were observed at compartment 19th in Liangshui National Nature Reserve from Oct.

Comparative Studies on the Seasonal Changes of Some Eco-physiological Indices of Red Squirrels, Sciurus vulgaris mantchuricus, in Northeast Forestry Region, China;

Study on the Strategy of Nutritional Adaptation in Red Squirrels(Sciurus vulgaris mantchuricus);

Methods Chinchillas were exposed to a 4 kHz narrow band noise at 108 dB SPL for 1h.

This experiment had 6 chinchillas right ears pre treated with R PIA(0 1 mmol/L 30 μl) 2 hours before exposure to 100 impulses at 150 dB peak SPL.

Nursery Techniques for Introduced Pinus quadrifolia and Pinus sabiniana;

Pinus quadrifolia and Pinus sabiniana are originally distributed respectively in California and north of Baja California as well as semi-arid area of Nevada,and normally mixed with pines and oaks with a clear vertical distribution structure.