The go-to data point used to indicate whether an institution is helping students reach success has tended to be its graduation rate. Post-graduation employment is another indicator but the definition of student success has evolved to include many more areas.
However, many examples exist of non-linear and sometimes abrupt changes in ecosystems. A change may be gradual until a particular pressure on the ecosystem reaches a threshold, at which point rapid shifts to a new state occur. Some non-linear changes can be very large and have substantial impacts on human well-being.
G. Secondary Succession â the series of changes that occur where the ecosystem has been disturbed but where soil and some organisms still exist. 1. Natural disturbances include fire, flood, hurricanes and tornadoes 2. Human disturbances include farming, logging, mining, 3. occurs where ecosystem currently exist 4.