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Year 7 Geography: Ecosystems

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Overview.pdf. Castlereagh Scribbly Gum and Agnes Banks Woodlands of the Sydney Basin Bioregion. The Great Barrier Reef. The Great Barrier Reef (GBR) stretches 2,300 kilometres along the Queensland coast and includes over 2,900 reefs, and around 940 islands and cays.

The Great Barrier Reef

The Great Barrier Reef Marine Park is 345,000 square kilometres in size, five times the size of Tasmania or larger that the United Kingdom and Ireland combined! The reef is immensely diverse. It is home to more than 1,500 species of fish, 411 types of hard coral, one-third of the world’s soft corals, 134 species of sharks and rays, six of the world’s seven species of threatened marine turtles, and more than 30 species of marine mammals, including the vulnerable dugong.

Add to that stunning marine suite as many as 3,000 molluscs and thousands of different sponges, worms and crustaceans, 630 species of echinoderms (starfish and sea urchins) and 215 bird species, of which 22 are seabirds. The GBR is listed under all four natural World Heritage criteria for its outstanding universal value. A natural investment Protecting our marine wonderland.

Coastal Upland Swamps in the Sydney Basin Bioregion. 124-conservation-advice. Chapter 8 Impacts of Introduced Species on Biodiversity. Coastal Sand Dunes Case Study Stockton. As mentioned in the previous chapter, humans have been responsible for changing the lithosphere and biosphere on Coastal Sand Dunes.

Coastal Sand Dunes Case Study Stockton

The Stockton Bight Coastal Sand Dunes are no exception and humans have had both positive and negative impacts upon them. 1. Positive Impacts a) Aboriginals, fire and the Encouragement of Biodiversity The most positive human impact that has been made on the Stockton Bight Coastal Sand Dunes was by the Aboriginal people, particularly the Worimi Nation. As explained earlier, vegetation plays two important roles on Coastal Sand Dunes. Some of the main vegetation species found at Stockton Bight -such as Banksias, Wattles, and Eucalypts- depend on fire for the propagation of their seeds and for the development of new growth.

By deliberately lighting fires, the indigenous peoples have contributed the growth of the thick forests and woodlands that were found in the secondary and tertiary vegetation zones. B)European Management 2. Coastal development Recreational Uses. Invasive Species - National Wildlife Federation. "Invasive species" — it doesn’t sound very threatening, does it?

Invasive Species - National Wildlife Federation

But these invaders, large and small, have devastating effects on U.S. wildlife. Invasive species are one of the leading threats to native wildlife. Approximately 42% of Threatened or Endangered species are at risk primarily due to invasive species. Human health and economies are also at risk from invasive species. The impacts of invasive species on our natural ecosystems and economy cost billions of dollars each year. What makes a species invasive? An invasive species can be any kind of living organism—an amphibian (like the cane toad pictured left), plant, insect, fish, fungus, bacteria, or even an organism’s seeds or eggs—that is not native to an ecosystem and which causes harm. An invasive species does not have to come from another country. How do invasive species spread? Invasive species are primarily spread by human activities, often unintentionally. Ships: Ships can carry aquatic organisms in their ballast water. Buloke-woodlands.pdf. Sp041_fs_ntsd08_buloke_woodlands_5sep08.pdf.

Parks & Wildlife Service - Threats to the Tasmanian Wilderness World Heritage Area. How you can help: You can encourage others to ‘do the right thing’ in our national parks and reserves.

Parks & Wildlife Service - Threats to the Tasmanian Wilderness World Heritage Area

Please report any illegal activities in national parks and reserves to police or the nearest Parks and Wildlife Service Office. Wildfires Unmanageable wildfires are probably the greatest realistic threat that could cause rapid, large-scale major ecological impacts to the World Heritage Area. In addition, inappropriate fire regimes (e.g. fires being too frequent, too infrequent, or too hot etc) can cause significant long-term changes to the nature and extent of vegetation communities, as well as giving rise to serious risks to public safety, built assets, and adjacent lands. The frequency and intensity of wild fires, especially the risk of unmanageable ‘landscape-scale fires’, is likely to increase as a result of human-induced climate change. What is being done to manage wildfires? How you can help: Use a fuel stove (e.g. a Trangia) when you are in the Tasmanian bush. Weeds Walker impacts.