BIO 311D Lecture Notes - Lecture 4: Carrying Capacity, Industrial Revolution
Document Summary
Population density - number of organisms per unit area. Exponential population growth - rapid growth; geometric rise of population as it grows in an ideal, limitless environment; j-shaped curve. Logistic population growth - a model displaying population growth that levels off as population size coming to the number of individuals an environment can hold. Carrying capacity - number of individuals an environment can hold. Density-dependent factor - pertains to any detail that varies according to a rise in population density; ex. competition for predation, food, etc. Density-independent factor - referring to any characteristic that is not affected by population density; ex. soil nutrients, weather, physical factors. Birth rate - rate at which people are born. Death rate - mortality, the rate of people dying. Population change - growth rate= all births minus all deaths. Population - a group of individuals of a single species living in same area.
