What is the correct levels of organisation in an environment, from broadest to narrowest?
Landscape, Community, Population, Organism
Organism, Population, Ecosystem, Landscape
Ecosystem, Landscape, Organism, Population
What is an ecosystem?
Why is biodiversity important?
Case study: Mining on the McArthur River- What was the environmental problem?
Diversion of 5km of river to mine zinc underneath river
Leaching of acid, metals and salts into the river. Contamination of fish, elevated lead, zinc and mercury
Underestimation of impacts by non-independant environmental consultants
How much extinction are humans responsible for
20%
5%
80%
60%
What are currently the main threats to the environment?
Case study: Dam collapse in Brazil- What is the effect on the environment?
Highened arsenic and lead levels in the river(10-20 times regulated standard). Major impact on aquatic organisms.
Wall burst causing 19 deaths in village of Bento Rodigues in Brazil, sludge released into Doce river.
What is inter-generational equity?
Issue of sustainable development referring to fairness in the intertemporal distribution of the endowment with natural assets or of the rights to their exploitation.
Development that meets the needs of the present without compromising the ability of future generations
The Earth summit- a UN conference on Environment and Development
Which one is not a success of the Earth Summit?
Public Awareness
Foundation of International cooperation
Interest from private industry
Major improvements of issues addressed at the conference
Approximatley how much(%) of Australia's forests have been cleared or severely modified? Why is this a problem?
50. Hold significant ecosystems for birds, mammals and plants
20. Forests are major centres for biodiversity
90. Biodiversity increases with forest age
5. Not a problem
Why will Tasmania's state forests be a globally trusted source of sustainable timber and other products and services for this and future generations? Because they will sustain:
Biodiversity and habitats, jobs, carbon stores, clear air, water and healthy forests, science-based stewardship, community access and heritage.
Jobs. Timber
Tension between making money and looking after the environment
What are three consequences of mining?
What are consequences of water use from rivers and groundwater(Irrigation)?
Degradation of rivers and groundwater ecosytems
Degradation of rivers and groundwater ecosytems, loss of biodiversity, increased blue-green algae, invasive species, pollution.
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