AN237 Lecture Notes - Lecture 28: Carrying Capacity, Exponential Growth, Natural Capital
Document Summary
An237 les 28, current world pop: 7. 7 billion, thomas robert malthus, principle of population 1798, exponential growth. Population growth natural capital: the organic and inorganic resources contained in the earths lands and waters providing for the goods we produce and consume. Malthus predicted significant hardship if the human population were to grow to exceed out natural capital. Carrying capacity: the population size of a given organism that a habitat could comfortably sustain given available resources, denoted by the symbol k; K fluctuates with variation in resources, and for human populations these include not only space, food, and water but also variables such as sanitation, health care and social capital. Birth and fertility rates: negative: more deaths than birth, positive: more births than deaths, replacement fertility rate: 2. 33 globally, total fertility rate. Average # children born per woman canada: 1. 59 (below replacement) niger: 7. 03. Per 1000 live births massive global variation niger: 87. 98.
