BIOS1301

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

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

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 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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