搜索结果: 1-3 共查到“理学 population density”相关记录3条 . 查询时间(0.25 秒)
Percolation threshold determines the optimal population density for public cooperation
Percolation threshold optimal population density public cooperation
2012/5/28
While worldwide census data provide statistical evidence that firmly link the population density with several indicators of social welfare, the precise mechanisms underlying these observations are lar...
Limnochemical Factors Influencing the Seasonal Population Density, Secondary Production, and Calcium-to-Tissue Ratio in the Freshwater Limpet Septaria lineata (Archaeogastropoda: Neritidae)
Septaria freshwater limpet secondary production population density Ganga
2010/3/25
The distribution, secondary production, and calcium:tissue (Ca:tissue) ratio in relation to limno-chemical factors were studied in a freshwater limpet (Septaria lineata) population from the west bank ...
Responses of Meteorus Versicolor Wesm. (Hymenoptera, Braconidae) to the Population Density of Tephrina Arenacearia Den. et Schiff. (Lepidoptera. Geomatridae)
parasitoid functional numerical responses
2010/4/1
The purpose of this research was the determination of the effectiveness of Meteorus versicolor Wesm. in the control of Tephrina arenacearia Den. et Schiff. We studied the behavioral responses of this ...