Ecosystem problems can arise by:
¥1) Disruption of essential materials/nutrients
cycles
¥
a)
changing the rate of cycling by material overloads or leaks
a)
changing the rate of cycling by material overloads or leaks ¥
in the system
¥b)
breaking of the cycle
b)
breaking of the cycle¥c)
introduction of human-made chemicals into the system, especially
c)
introduction of human-made chemicals into the system, especially¥
those which have no natural decomposition chain
¥2) Disruption of energy flow(s)
¥a)
entropy or heat build-up in the system by consumption of too much
a)
entropy or heat build-up in the system by consumption of too much¥
energy by human society
¥b)
changing properties and/or composition of the atmosphere leading
b)
changing properties and/or composition of the atmosphere leading¥
to an increase or decrease in the solar energy input or output
¥
from the earth-atmosphere system
3) Disruption of the ecosystem by destruction of species diversity and/or the food web