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5.3 201-204 Impacts on ecosystem🦊 (Fuel reduction burning (FRB turns an…
5.3 201-204 Impacts on ecosystem🦊
Fuel reduction burning
FRB turns an intense fire into a low-intensity fire firefighters can control low-intensity fires more easily
Kangaroos, Lizards and other reptiles can all escape low intensity fires
The practice of fuel reduction burning helps reduce the amount of fuel available for a fire
After a low-intensity fire, animals such as kangaroos and wallabies move back into the are within a few days
When an intense fire sweeps through it can kill many native plants and animals
Conversationists are concerned that frequent burnings reduces the number of different types of living thing able to survive in an area
Many people in Australia are afraid of fire ad want to prevent fire, however when there is a long time between fires, the amount of fuel available causes and intense fire
Carefully planned burns can be used to create a variety of habitats
In the burnt areas still have all the same types of plants and animals as before, but the actual numbers of individuals may be less
The dense vegetation of areas left unburnt for a few years, provide small birds and other animals with protection from predators
Recently burnt areas provide habitats for animals that prefer open areas
Sustainable ecosystem
Natural ecosystems are sustainable ecosystems although human activity can change ecosystems
In a sustainable ecosystem there are a wide variety of species or different organisms found there
If a species cannot find a suitable place to live then it is danger of becoming extinct
Ecosystems that are diverse and are able to provide the needs of organisms living there over a long period of time are sustainable ecosystem
The valleys of the Blue Mountains are sustainable ecosystems that provide the resources for a variety of species
Extinction can be caused by climate change, disease, destruction f habitat, natural disasters or the development of a new species that s better adapted to the environment
Traditional use of fire
Another important adaption is the ability to recover quickly after fire has destroyed their leaves
Indigenous Australians used fire as a tool for hunting kangaroos and wallabies as they escaped the fire the aboriginals would catch the
Over 400 Australian species of plants will germinate after being exposed to smoke examples of these are, Acacia, grass trees and Banksia
Traditional Aboriginal burning practices used low-intensity fires that burned the grass and low shrubs without destroying the leaves at the tops of the tallest trees
Some plants in Australia have adapted to fire
When Europeans arrived in Australia, traditional Aboriginal burning practices gradually stopped
Fire causes rapid changes in ecosystems, fire has an important part of Australian ecosystems since before humans lived on the continent
Fire monitoring technology
Using observations from these satellites, fires in remote areas can be identified and fires in less remote areas can be monitored
Australians scientists and government agencies developed a new fire-monitoring system, this system uses satellites that have Moderate Resolution Imaging Spectroradiometer(MODIS) sensors
Different parts of Ausralia have different times of the year when fires are most likely to occur, these times are known as fire seasons
Introduced species
These species include:
Most of the animals and plants we use as food such as wheat and cattle
Pet animals such as cats and dogs
Animals used for transport and recreation such as the horse and the cattle
Many ornamental plants used in parks and gardens such as the jacaranda and roses
Many species of plants and animals have been introduce into Australia
The wool cotton and leather used to make clothes and furnishings come from introduced species
The majority of introduced species have benefited humans
Animal control
Introduced animals such as rabbits, foxes and cats, cause widespread damage to ecosystems, eating native animals and destroying efforts to grow crops through digging and eating seedlings
Native animals such as dingoes can cause problems for farmers by killing lambs for food
Animal control is often needed to restore native environments and assist farmers
Rabbits eat the crops that farmers buildings fences to protect their cattle and sheep, this leads to farmers building fences to protect their animals from both native and introduced predators
Dingo fence
This fence brought with it advantages and disadvantages for exaple fewer sheep where killed and eaten by dingoes but there are greater numbers of emus and kangaroos because there is no one to eat them so they compete for grass with the sheep
The aim of the fence was to keep the dingoes out of the farming areas of southeastern Australia
Dingoes were a problem for farmers in the late 1800s, between 1880 and 1885 a fence was constructed to protect the sheep and cattle of southern Queensland from attack by dingoes and other wild dogs