GEOS1001 Study Guide - Precautionary Principle, Natural Capital, Wollemia
Document Summary
Biophysical interactions which lead to diverse ecosystems and their functioning. Cycle of plants photosynthesis; nutrients recycled and retained. Levels of organization: a biological community of interac[ng organisms and their physical environment. Ecosphere: the collection of living and dead organisms interacting with one another and their non- living environment. This represents the aggregate of the world"s ecosystems. Any form of life: producers + consumers + decomposers. Same species living together in an area dynamic i. e. structure, age, genetics vary. Populations interacting biological, physical, chemical interactions. Productivity (expressed as either): biomass produced- new living matter/m2. Species biomass: the mass of one or more species, Community biomass: the mass of all species in the community including micro- organisms, plants and animals. It is expressed as the average mass per unit area. ) Energy flows + nutrient recycling = food chains heat loss in process of transfers. Energy flows- transfer of energy. The origin of all energy is the sun.
