Lecture Test 2

Why do we need to monitor aquatic ecosystems?

What are the benefits of dams?

What are the tradeoffs of dams?

What causes salinity?

What is primary salinisation?

What is secondary salinisation

What is salinity

What is sodicity

How is salinisation linked to land clearing

What are the management actions are available to counter salinity?

Why are rivers regulated

How does this impact the hydrology?

What are the environmental benefits can be achieved by the return of river flow?

What is a natural flood

What is watering with a regulator or pump

What conditions lead to algal blooms in the river Torrens?

What management options are available to improve water quality in the catchment and the lake?

What is a point source

What is diffuse pollution

Describe how mining has impacted on water quality with particular reference to heavy metals and acid mine drainage?

Draw a conceptual model of the hydrological cycle including groundwater?

What are the imputs to the hydrological cycle

What are the major outputs of the hydrological cycle

Describe how the water budget can inform water allocation

what does the water allocation do

what is the water allocation planning model?

How does the water budget identify whether the system is over-allocated

how does land use change affect the hydrological cycle

why can forestry affect groundwater resources?

What is logical induction

What is logical deduction

Describe some of the effects of Co2 pollution on the marine environment

Given increased nutrient runoff into the ocean causes environmental problems, what solutions could you offer.

What is a top down system

What is a bottom up system

describe why fishing causes cascading change within systems sensitive to changes in predator numbers?