Environmental issue in Australia describes a number of

environmental issue Environmental issues are effects of human activity on the biophysical environment, most often of which are harmful effects that cause environmental degradation. Environmental protection is the practice of protecting the natural environment o ...

s which affect the

environment of Australia The Australian environment ranges from virtually pristine Antarctic territory and rainforests to degraded industrial areas of major cities. Forty distinct ecoregions have been identified across the Australian mainland and islands. Central Aus ...

. There are a range of such issues, some of the relating to

conservation in Australia Conservation in Australia is an issue of state and federal policy. Australia is one of the most biologically diverse countries in the world, with a large portion of species endemic to Australia. Preserving this wealth of biodiversity is importa ...

while others, for example the deteriorating state of Murray-Darling Basin, have a direct and serious effect on human

land use Land use involves the management and modification of natural environment or wilderness into built environment such as settlements and semi-natural habitats such as arable fields, pastures, and managed woods. Land use by humans has a long ...

and the economy. Many human activities including the use of

natural resources Natural resources are resources that are drawn from nature and used with few modifications. This includes the sources of valued characteristics such as commercial and industrial use, aesthetic value, scientific interest and cultural value. ...

have a direct impact on the

Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...

n environment. These issues are the primary concern of the

environmental movement in Australia Beginning as a conservation movement, the environmental movement in Australia was the first in the world to become a political movement. Australia is home to United Tasmania Group, the world's first green party. The environmental movement is r ...

Climate change

Climate change is now a major political talking point in Australia in the last two decades. Persistent

drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, an ...

, and resulting

water restrictions An outdoor water-use restriction is a ban or other lesser restrictions put into effect that restricts the outdoor use of water supplies. Often called a watering ban or hosepipe ban, it can affect: *irrigation of lawns * car washing *recreationa ...

during the first decade of the twenty-first century, are an example of natural events' tangible effect on economic and political realities . Australia ranks within the top ten countries globally with respect to greenhouse gas emissions per capital. The current federal and state governments have all publicly stated their belief that climate change is being caused by anthropogenic greenhouse gas emissions. Vocal minority groups within the population campaign against mining and coal-fired power stations in Australia, and such demonstrations are widely reported by the mainstream media. Similarly, vocal minority groups concurrently oppose wind energy schemes, despite being 'carbon neutral', on the grounds of local visual and noise impact and concern for the currently high cost and low reliability of wind energy. Despite the publication of the Garnaut report and the Green Paper on the proposed Carbon Pollution Reduction Scheme, public belief in anthropogenic climate change has noticeably eroded following the leaking of e-mails from the University of East Anglia's Climate Research Unit. There is claimed to be a net benefit to Australia in stabilising greenhouse gases in the atmosphere at 450ppm CO₂ eq in line with the prevailing political stance. Public disagreement with this opinion is generally dismissed as expression of vested interests, for example from the

coal industry Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead ...

Energy use

Australia is a major exporter and consumer of coal, the combustion of which liberates CO₂. Consequently, in 2003 Australia was the eighth highest emitter of CO₂ gases per capita in the world liberating 16.5 tonnes per capital. Australia is claimed to be one of the countries most at risk from

climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...

according to the

Stern report The Stern Review on the Economics of Climate Change is a 700-page report released for the Government of the United Kingdom on 30 October 2006 by economist Nicholas Stern, chair of the Grantham Research Institute on Climate Change and the Enviro ...

. Most of Australia's demand for electricity depends upon coal-fired thermal generation, owing to the plentiful indigenous coal supply, limited potential electric generation and political unwillingness to exploit indigenous uranium resources (although Australia accounted for the world's second highest production of uranium in 2005 to fuel a 'carbon neutral' domestic nuclear energy program. Australia does not require its vehicles to meet any fuel efficiency standards, in spite of its emissions reduction target under the

Paris Agreement The Paris Agreement (french: Accord de Paris), often referred to as the Paris Accords or the Paris Climate Accords, is an international treaty on climate change. Adopted in 2015, the agreement covers climate change mitigation, adaptation, and ...

Conservation

Conservation Conservation is the preservation or efficient use of resources, or the conservation of various quantities under physical laws. Conservation may also refer to: Environment and natural resources * Nature conservation, the protection and manageme ...

in Australia is an issue of state and federal policy. Australia is one of the most biologically diverse countries in the world, with a large portion of species endemic to Australia. Preserving this wealth of

biodiversity Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic ('' genetic variability''), species ('' species diversity''), and ecosystem ('' ecosystem diversity'') ...

is important for future generations. A key conservation issue is the preservation of biodiversity, especially by protecting the remaining rainforests. The destruction of habitat by human activities, including land clearing, remains the major cause of

biodiversity loss Biodiversity loss includes the worldwide extinction of different species, as well as the local reduction or loss of species in a certain habitat, resulting in a loss of biological diversity. The latter phenomenon can be temporary or permanent, de ...

in Australia. The importance of the Australian rainforests to the conservation movement is very high. Australia is the only western country to have large areas of rainforest intact. Forests provide timber, drugs, and food and should be managed to maximize the possible uses. Currently, there are a number of environmental movements and campaigners advocating for action on saving the environment, one such campaign is the Big Switch. Land management issues including clearance of native vegetation, reafforestation of once-cleared areas, control of exotic weeds and pests, expansion of dryland salinity, and changed fire regimes. Intensification of resource use in sectors such as forestry, fisheries, and agriculture are widely reported to contribute to biodiversity loss in Australia. Coastal and marine environments also have reduced biodiversity from reduced water quality caused by pollution and sediments arising from human settlements and agriculture. In central New South Wales where there are large plains of grassland, problems have risen from—unusual to say—lack of land clearing. The

Daintree Rainforest The Daintree Rainforest is a region on the northeast coast of Queensland, Australia, north of Mossman and Cairns. At around , the Daintree is a part of the largest continuous area of tropical rainforest on the Australian continent. The Daintr ...

, a tropical rainforest near

Daintree, Queensland Daintree is a rural town and locality in the Shire of Douglas, Queensland, Australia. In the , Daintree had a population of 129 people. Geography Daintree is a settlement in North Queensland north of Cairns and from Port Douglas, Queensland. ...

covering around 1200 square kilometres, is threatened by logging, development, mining and the effects of the high tourist numbers. There are some government programs in Australia which are the opposite of conservation (such as killing wildlife); an example of this is

shark culling Shark culling is the deliberate killing of sharks by government authorities, usually in response to one or more shark attacks. The term "shark control" is often used by governments when referring to culls. Shark culling has been criticized by envi ...

, which currently occurs in

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

and

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , establishe ...

Native fauna

Over a hundred species of fauna are currently under serious threat of extinction. The plight of some of these species receives more attention than others and recently the focus of many conservation organisations has been the critically endangered

northern hairy-nosed wombat The northern hairy-nosed wombat (''Lasiorhinus krefftii'') or yaminon is one of three extant species of Australian marsupials known as wombats. It is one of the rarest land mammals in the world and is critically endangered. Its historical rang ...

, the endangered

Tasmanian devil The Tasmanian devil (''Sarcophilus harrisii'') ( palawa kani: purinina) is a carnivorous marsupial of the family Dasyuridae. Until recently, it was only found on the island state of Tasmania, but it has been reintroduced to New South Wales ...

, northern

tiger quoll The tiger quoll (''Dasyurus maculatus''), also known as the spotted-tail quoll, the spotted quoll, the spotted-tail dasyure, native cat or the tiger cat, is a carnivorous marsupial of the quoll genus '' Dasyurus'' native to Australia. With male ...

, south eastern

red-tailed black cockatoo The red-tailed black cockatoo (''Calyptorhynchus banksii'') also known as Banksian- or Banks' black cockatoo, is a large black cockatoo native to Australia. Adult males have a characteristic pair of bright red panels on the tail that gives t ...

southern cassowary The southern cassowary (''Casuarius casuarius''), also known as double-wattled cassowary, Australian cassowary or two-wattled cassowary, is a large flightless black bird. It is one of the three living species of cassowary, alongside the dwarf c ...

, Tasmanian

wedge-tailed eagle The wedge-tailed eagle (''Aquila audax'') is the largest bird of prey in the continent of Australia. It is also found in southern New Guinea to the north and is distributed as far south as the state of Tasmania. Adults of this species have lo ...

Leadbeater's possum Leadbeater's possum (''Gymnobelideus leadbeateri'') is a critically endangered possum largely restricted to small pockets of alpine ash, mountain ash, and snow gum forests in the Central Highlands of Victoria, Australia, north-east of Melbou ...

and southern

corroboree frog Corroboree frogs ( ) comprise two species of frog native to the Southern Tablelands of Australia. Both species are small, poisonous ground-dwelling frogs. The two species are the southern corroboree frog (''Pseudophryne corroboree'') and the n ...

. Australia has a poor record of conservation of native fauna. The extinction of

Australian megafauna The term Australian megafauna refers to the megafauna in Australia during the Pleistocene Epoch. Most of these species became extinct during the latter half of the Pleistocene, and the roles of human and climatic factors in their extinction are ...

is attributed to the arrival of humans and since European settlement, 23 birds, 4 frogs, and 27 mammal species are also known to have become extinct.

Marine conservation

One of the notable issues with

marine conservation Marine conservation, also known as ocean conservation, is the protection and preservation of ecosystems in oceans and seas through planned management in order to prevent the over-exploitation of these marine resources. Marine conservation is i ...

in Australia is the protection of the

Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, A ...

. The Great Barrier Reef's environmental pressures include water quality from runoff, climate change and mass coral bleaching, cyclic outbreaks of the crown-of-thorns starfish, overfishing, and shipping accidents. The government of Queensland currently kills

shark Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachi ...

s in the Great Barrier Reef using

drum lines A drum line is an unmanned aquatic trap used to lure and capture large sharks using baited hooks. They are typically deployed near popular swimming beaches with the intention of reducing the number of sharks in the vicinity and therefore the prob ...

, causing damage to the

marine ecosystem Marine ecosystems are the largest of Earth's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the sur ...

. In 2021

announced the creation of 2 national marine parks in size of 740,000 square kilometers. With those parks 45% of the Australian marine territory will be protected.

Whaling

Whaling Whaling is the process of hunting of whales for their usable products such as meat and blubber, which can be turned into a type of oil that became increasingly important in the Industrial Revolution. It was practiced as an organized industr ...

in Australia took place from

colonisation Colonization, or colonisation, constitutes large-scale population movements wherein migrants maintain strong links with their, or their ancestors', former country – by such links, gain advantage over other inhabitants of the territory. When ...

in 1788. In 1979 Australia terminated whaling and committed to whale protection. The main varieties hunted were humpback,

blue Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when ...

right Rights are legal, social, or ethical principles of freedom or entitlement; that is, rights are the fundamental normative rules about what is allowed of people or owed to people according to some legal system, social convention, or ethical ...

and

sperm whale The sperm whale or cachalot (''Physeter macrocephalus'') is the largest of the toothed whales and the largest toothed predator. It is the only living member of the genus ''Physeter'' and one of three extant species in the sperm whale famil ...

Shark culling

Western Australia culled sharks in 2014, killing dozens of

tiger sharks The tiger shark (''Galeocerdo cuvier'') is a species of requiem shark and the last extant member of the family Galeocerdonidae. It is a large macropredator, capable of attaining a length over . Populations are found in many tropical and tempera ...

and causing public protest. Later that year it was abandoned, and the government of Western Australia continued to shoot and kill sharks it believed to be an "imminent threat" to humans from 2014 to 2017; this policy was criticized by senator Rachel Siewart for being environmentally damaging. From 1962 to the present, the government of

has killed sharks on

and

shark nets A shark net is a submerged section of gillnets placed at beaches designed to intercept large marine animals including sharks, with the aim to reduce the likelihood of shark attacks on swimmers. Shark nets used are gillnets which is a wall of n ...

, a process that also kills other animals such as

dolphins A dolphin is an aquatic mammal within the infraorder Cetacea. Dolphin species belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (t ...

and

dugong The dugong (; ''Dugong dugon'') is a marine mammal. It is one of four living species of the order Sirenia, which also includes three species of manatees. It is the only living representative of the once-diverse family Dugongidae; its closest m ...

s. From 1962 to 2018, Queensland's "shark control" program killed roughly 50,000 sharks, including sharks in the

.https://www.news.com.au/technology/science/animals/aussie-shark-population-is-staggering-decline/news-story/49e910c828b6e2b735d1c68e6b2c956e Aussie shark population in staggering decline. Rhian Deutrom. 14 December 2018. Retrieved 22 December 2018. Queensland's shark-killing program has been called "outdated, cruel and ineffective".https://www.ntd.tv/2018/09/04/video-endangered-hammerhead-sharks-dead-on-drum-line-in-great-barrier-reef/ Phillips, Jack (4 September 2018). "Video: Endangered Hammerhead Sharks Dead on Drum Line in Great Barrier Reef". ntd.tv. Retrieved 22 December 2018.

has a

shark net A shark net is a submerged section of gillnets placed at beaches designed to intercept large marine animals including sharks, with the aim to reduce the likelihood of shark attacks on swimmers. Shark nets used are gillnets which is a wall of net ...

program that kills sharks as well as other marine life. Between 1950 and 2008, 352 tiger sharks and 577 great white sharks were killed in the nets in New South Wales – also during this period, a total of 15,135 marine animals were killed in the nets, including whales and turtles.https://web.archive.org/web/20181002102324/https://www.marineconservation.org.au/pages/shark-culling.html "Shark Culling" (archived). marineconservation.org.au. Archived from the original on 2018-10-02. Retrieved 22 December 2018. There has been a very large decrease in the number of sharks in eastern Australia in recent years, and the shark-killing programs in Queensland and New South Wales are partly responsible for this decrease. Jessica Morris of

Humane Society International Humane Society International (HSI) is the international division of The Humane Society of the United States. Founded in 1991, HSI has expanded The HSUS's activities into Central and South America, Africa, and Asia. HSI's Asian, Australian, Cana ...

calls

a "knee-jerk reaction" and says, "sharks are top order predators that play an important role in the functioning of marine ecosystems. We need them for healthy oceans."

Oil spills

While there have been no

oil spill An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into t ...

environmental disasters of the scale of the

Exxon Valdez ''Oriental Nicety'', formerly ''Exxon Valdez'', ''Exxon Mediterranean'', ''SeaRiver Mediterranean'', ''S/R Mediterranean'', ''Mediterranean'', and ''Dong Fang Ocean'', was an oil tanker that gained notoriety after running aground in Prince Wi ...

in the country, Australia has a large oil industry and there have been several large oil spill

Spills remain a serious threat to the marine environment and Australian coastline. The largest spill to date was the Kirki (tanker), Kirki tanker in 1991 which dropped 17,280 tonnes of oil off the coast of

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to t ...

. In March 2009, the

2009 southeast Queensland oil spill The 2009 southeast Queensland oil spill occurred off the coast of southeast Queensland, Australia on 11 March 2009, when 230 tonnes of fuel oil, 30 tonnes of other fuel and 31 shipping containers containing 620 tonnes of ammonium nitrate spille ...

occurred, where 200,000 litres were spilled from the ''

MV Pacific Adventurer MV ''Pacific Mariner'', formerly MV ''Pacific Adventurer'', is a 1123 TEU geared multi-purpose container ship that gained notoriety after causing Queensland's largest oil spill on the east coast of Australia in March 2009. The ship is owned by ...

'' spilling more than 250 tonnes of oil, 30 tonnes of fuel and other toxic chemicals on Brisbane's suburban beaches. Premier

Anna Bligh Anna Maria Bligh (born 14 July 1960) is a lobbyist and former Australian politician who served as the 37th Premier of Queensland, in office from 2007 to 2012 as leader of the Labor Party. She was the first woman to hold either position. In ...

described the spill as "worst environmental disaster Queensland has ever seen".

Ocean dumping

A serious issue to the Australian marine environment is the dumping of rubbish from ships. There have been a number of cases, particularly involving the navy of Australian and other countries polluting Australian waters including the dumping of

chemical warfare Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons. This type of warfare is distinct from nuclear warfare, biological warfare and radiological warfare, which together make up CBRN, the military a ...

agents. Recently documented cases include the aircraft carrier

USS Ronald Reagan USS ''Ronald Reagan'' (CVN-76) is a , nuclear-powered supercarrier in the service of the United States Navy. The ninth ship of her class, she is named in honor of Ronald W. Reagan, President of the United States from 1981 to 1989. She was bu ...

in 2006 which was found to be dumping rubbish off the shores of

Moreton Island Moreton Island (Mulgumpin) is an island on the eastern side of Moreton Bay on the coast of South East Queensland, Australia. The Coral Sea lies on the east coast of the island. Moreton Island lies northeast of the Queensland capital, Brisban ...

. In Victoria, a large number of toxic drums containing

1,2-Dichlorobenzene 1,2-Dichlorobenzene, or orthodichlorobenzene (ODCB), is an organic compound with the formula CHCl. This colourless liquid is poorly soluble in water but miscible with most organic solvents. It is a derivative of benzene, consisting of two adjacent ...

xylenol, a substance very toxic to aquatic creatures washed up on beaches during May 2009 presumably fallen off a passing container ship.

Invasive species

Australia's geographical isolation has resulted in the evolution of many delicate ecological relationships that are sensitive to foreign invaders and in many instances provided no natural predators for many of the species subsequently introduced. Introduced plants that have caused widespread problems are

lantana ''Lantana'' () is a genus of about 150 species of perennial flowering plants in the verbena family, Verbenaceae. They are native to tropical regions of the Americas and Africa but exist as an introduced species in numerous areas, especially in ...

and the prickly pear bush. The introduction and spread of animals such as the

cane toad The cane toad (''Rhinella marina''), also known as the giant neotropical toad or marine toad, is a large, terrestrial true toad native to South and mainland Central America, but which has been introduced to various islands throughout Oceania ...

rabbit Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit sp ...

can disrupt the existing balances between populations and develop into environmental problems. The introduction of

cattle Cattle (''Bos taurus'') are large, domesticated, cloven-hooved, herbivores. They are a prominent modern member of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Adult females are referred to as cows and adult ...

into Australia and to a lesser extent the

dingo The dingo (''Canis familiaris'', ''Canis familiaris dingo'', ''Canis dingo'', or ''Canis lupus dingo'') is an ancient ( basal) lineage of dog found in Australia. Its taxonomic classification is debated as indicated by the variety of scienti ...

, are other examples of species that have changed the landscape. In some cases the introduction of new species can lead to

plague Plague or The Plague may refer to: Agriculture, fauna, and medicine *Plague (disease), a disease caused by ''Yersinia pestis'' * An epidemic of infectious disease (medical or agricultural) * A pandemic caused by such a disease * A swarm of pes ...

s and the extinction of endemic species. The introduced species

red fox The red fox (''Vulpes vulpes'') is the largest of the true foxes and one of the most widely distributed members of the Order (biology), order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe ...

has single-handedly caused the extinction of several species. Tasmania takes the threat of

introduction so seriously that it has a government sponsored taskforce to prevent fox populations from taking hold on the island.

Land degradation

According to

Jared Diamond Jared Mason Diamond (born September 10, 1937) is an American geographer, historian, ornithologist, and author best known for his popular science books '' The Third Chimpanzee'' (1991); ''Guns, Germs, and Steel'' (1997, awarded a Pulitzer Priz ...

, "Australia's number-one environmental problem s

land degradation Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land. It is viewed as any change or disturbance to the land perceived to be deleterious o ...

, '' Collapse: How Societies Choose to Fail or Succeed'',

Penguin Books Penguin Books is a British publishing, publishing house. It was co-founded in 1935 by Allen Lane with his brothers Richard and John, as a line of the publishers The Bodley Head, only becoming a separate company the following year. Land degradation results from nine types of damaging environmental impacts: * Clearance of native vegetation *

Overgrazing Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature res ...

by sheep *

Rabbits Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit sp ...

* Soil nutrient exhaustion *

Soil erosion Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, a ...

* Man-made

s * Weeds * Misguided governmental policies * Salinization

Logging and woodchopping

Clearcutting of

old growth forest An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance, and thereby exhibits unique ecological feature ...

s is continuing in parts of Australia. This often involves the destruction of natural ecosystems and the replacement with monoculture plantations. Australia had a 2018

Forest Landscape Integrity Index The Forest Landscape Integrity Index (FLII) is an annual global index of forest condition measured by degree of anthropogenic modification. Created by a team of 48 scientists, the FLII, in its measurement of 300m pixels of forest across the globe ...

mean score of 7.22/10, ranking it 46th globally out of 172 countries.

Land clearing

In the

prehistory of Australia The prehistory of Australia is the period between the first human habitation of the Australian continent and the colonisation of Australia in 1788, which marks the start of consistent written documentation of Australia. This period has been var ...

the

Indigenous Australians Indigenous Australians or Australian First Nations are people with familial heritage from, and membership in, the ethnic groups that lived in Australia before British colonisation. They consist of two distinct groups: the Aboriginal peoples ...

used

fire-stick farming Fire-stick farming, also known as cultural burning and cool burning, is the practice of Aboriginal Australians regularly using fire to burn vegetation, which has been practised for thousands of years. There are a number of purposes for doing this ...

which was an early form of land clearing which caused long term changes to the ecology. With European colonisation land clearing continued on a larger scale for agriculture – particularly for cattle, cotton and wheat production. Since European settlement a total of 13% of native vegetation cover has been lost. The extinction of 20 different mammals, 9 bird and 97 plant species have been partially attributed to land clearing. Land clearing is a major source of Australia's greenhouse gas emissions, and contributed to approximately 12 percent of Australia's total emissions in 1998. The consequences of land clearing include

dryland salinity Dryland salinity is a natural process for soil, just like other processes such as wind erosion. Salinity degrades land by an increase in soil salt concentration in the environment, watercourse or soil in unirrigated landscapes, being in excess of ...

and

soil erosion Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, a ...

. These are a major concern to the landcare movement in Australia. The clearing of native vegetation is controlled by Federal laws (indirectly), State law and local planning instruments. The precise details of regulation of vegetation clearing differ according to the location where clearing is proposed.

Soil salinity

Soil salinity Soil salinity is the salt (chemistry), salt content in the soil; the process of increasing the salt content is known as salinization. Salts occur naturally within soils and water. Salination can be caused by natural processes such as mineral wea ...

affects 50,000 km² of Australia and is predominantly due to land clearance.

Waterway health

The protection of waterways in Australia is a major concern for various reasons including habitat and biodiversity, but also due to use of the waterways by humans. The Murray-Darling Basin is under threat due to

irrigation in Australia Irrigation is a widespread practice required in many areas of Australia, the driest inhabited continent, to supplement low rainfall with water from other sources to assist in growing crops and pasture. Overuse or poor management of irrigation ...

, causing high levels of salinity which affect agriculture and biodiversity in

Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...

and

South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest o ...

. These rivers are also affected by pesticide run-off and drought.

Australian waterways facing environmental issues

Rivers and creeks in urban areas also face

s, particularly pollution.

Victoria

* Port Phillip (contamination –

silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel ...

; sediment; toxins; household chemicals; garden chemicals; E. coli; litter; flotsam and jetsam) *

Yarra River The Yarra River or historically, the Yarra Yarra River, ( Kulin languages: ''Berrern'', ''Birr-arrung'', ''Bay-ray-rung'', ''Birarang'', ''Birrarung'', and ''Wongete'') is a perennial river in south-central Victoria, Australia. The lower s ...

(contamination – E. coli; litter – 13 traps; logging; erosion; salinity) * Maribyrnong River (contamination – arsenic and heavy metals; litter – 1 trap) *

Mullum Mullum Creek Mullum Mullum Creek is a creek in the outer eastern suburbs of Melbourne, Victoria, Australia. It is the main watercourse of the Mullum Mullum Valley, a tributary of the Yarra River and Yarra Valley. For tens of thousands of years it was used a ...

(contamination – E. coli; litter) *

Murray River The Murray River (in South Australia: River Murray) (Ngarrindjeri: ''Millewa'', Yorta Yorta: ''Tongala'') is a river in Southeastern Australia. It is Australia's longest river at extent. Its tributaries include five of the next six longest ...

(salinity, erosion)

New South Wales

RhodesRemediationUnionCarbideHomebushBay

Parramatta River The Parramatta River is an intermediate tide-dominated, drowned valley estuary located in Sydney, New South Wales, Australia. With an average depth of , the Parramatta River is the main tributary of Sydney Harbour, a branch of Port Jackson. Se ...

(contamination – dioxins,

arsenic Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, b ...

coal tar Coal tar is a thick dark liquid which is a by-product of the production of coke and coal gas from coal. It is a type of creosote. It has both medical and industrial uses. Medicinally it is a topical medication applied to skin to treat pso ...

chromium Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium metal is valued for its high corrosion resistance and hard ...

lead Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, ...

and

phthalate Phthalates (, ), or phthalate esters, are esters of phthalic acid. They are mainly used as plasticizers, i.e., substances added to plastics to increase their flexibility, transparency, durability, and longevity. They are used primarily to soften ...

s) *

Darling River The Darling River (Paakantyi: ''Baaka'' or ''Barka'') is the third-longest river in Australia, measuring from its source in northern New South Wales to its conflu ence with the Murray River at Wentworth, New South Wales. Including its long ...

(salinity, erosion) *

Cooks River The Cooks River, a semi-mature tide-dominated drowned valley estuary, is a tributary of Botany Bay, located in south-eastern Sydney, New South Wales, Australia. The course of the long urban waterway has been altered to accommodate various deve ...

(pollution, algal blooms)

Queensland

* Bremer River (water grading F – lowest possible) *

Brisbane River The Brisbane River is the longest river in South East Queensland, Australia, and flows through the city of Brisbane, before emptying into Moreton Bay on the Coral Sea. John Oxley, the first European to explore the river, named it after the ...

Oxley Creek The Oxley Creek ( Yagara: ''Benarrawa'') is a creek that is a tributary of the Brisbane River, located in suburban Brisbane in the South East region of Queensland, Australia. Rising in the low hills in Scenic Rim Region, water from the large ...

(water grading D) *

Bulimba Creek Bulimba Creek, originally known as Doboy Creek or Doughboy Creek, is a perennial stream that is a tributary of the Brisbane River, located in suburban Brisbane in the South East region of Queensland, Australia. Course and features The Bulimba C ...

(threatened species due to land degradation; pollution; litter)

South Australia

River Torrens The River Torrens , (Karrawirra Parri / Karrawirraparri) is the most significant river of the Adelaide Plains. It was one of the main reasons for the siting of the city of Adelaide, capital of South Australia. It flows from its source in the ...

(contaminants – E. coli;

algal bloom An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. The term ''algae'' encompass ...

)

Water use

Water use is a major sustainability issue in Australia. Water is becoming a very very big problem for not only Australia but worldwide as where there are droughts occurring more often and only having limited use of the water and then there are even places that don't have any water at all such as India etc, we need conserve our water for the future and get more access to the water since we only have roughly 5% access to it.

Urbanisation

Reservoir VIC 3073, Australia - panoramio (3)

Australia is one of the most urbanised countries in the world. Many Australian cities have large urban footprints and are characterised by an unsustainable low density

urban sprawl Urban sprawl (also known as suburban sprawl or urban encroachment) is defined as "the spreading of urban developments (such as houses and shopping centers) on undeveloped land near a city." Urban sprawl has been described as the unrestricted growt ...

. This places demand on infrastructure and services which contributes to the problems of land clearing, pollution, transport related emissions, energy consumption, invasive species,

automobile dependency Car dependency is the concept that some city layouts cause cars to be favoured over alternate forms of transportation, such as bicycles, public transit, and walking. Overview In many modern cities, automobiles are convenient and sometimes nec ...

and

urban heat island An urban heat island (UHI) is an urban or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities. The temperature difference is usually larger at night than during the day, and is most apparent ...

The urban sprawl continues to increase at a rapid rate in most Australian cities, particularly the state capital cities, all of which (with the exception of

Hobart Hobart ( ; Nuennonne/ Palawa kani: ''nipaluna'') is the capital and most populous city of the Australian island state of Tasmania. Home to almost half of all Tasmanians, it is the least-populated Australian state capital city, and second-small ...

) are metropoleis. In some centres, such as

Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mounta ...

and

Greater Western Sydney Greater Western Sydney (GWS) is a large region of the metropolitan area of Greater Sydney, New South Wales (NSW), Australia that generally embraces the north-west, south-west, central-west, and far western sub-regions within Sydney's metropo ...

Greater Melbourne Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a metrop ...

and

South East Queensland South East Queensland (SEQ) is a bio-geographical, metropolitan, political and administrative region of the state of Queensland in Australia, with a population of approximately 3.8 million people out of the state's population of 5.1 million. Th ...

large metropolitan

conurbation A conurbation is a region comprising a number of metropolises, cities, large towns, and other urban areas which through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most cas ...

s threaten to extend for hundreds of kilometres and based on current population growth rates are expected to become

megacities A megacity is a very large city, typically with a population of more than 10 million people. Precise definitions vary: the United Nations Department of Economic and Social Affairs in its 2018 "World Urbanization Prospects" report counted u ...

in the 21st century. Most Australian cities population growth is a result of

migration Migration, migratory, or migrate may refer to: Human migration * Human migration, physical movement by humans from one region to another ** International migration, when peoples cross state boundaries and stay in the host state for some minimum le ...

in contrast to the Birth rate and fertility rate in Australia, which is contributing to the ongoing trend of

urbanisation Urbanization (or urbanisation) refers to the population shift from rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change. It is predominantly the ...

. In recent years, some cities have implemented

transit-oriented development In urban planning, transit-oriented development (TOD) is a type of urban development that maximizes the amount of residential, business and leisure space within walking distance of public transport. It promotes a symbiotic relationship between ...

strategies to curb the urban sprawl. Notable examples include

Melbourne 2030 The Metropolitan Strategy Melbourne 2030 is a Victorian Government strategic planning policy framework for the metropolitan area of Greater Melbourne, intended to cover the period 2001–2030. During this period the population of the metropolita ...

, South East Queensland Regional Plan and the Sydney Metropolitan Strategy. There are also population

decentralisation Decentralization or decentralisation is the process by which the activities of an organization, particularly those regarding planning and decision making, are distributed or delegated away from a central, authoritative location or group. Conce ...

programs at state and federal levels aimed at shifting populations out of the major centres and stemming the drivers to rapid urbanisation. Albury-Wodonga was part of the federal government's program of decentralisation begun in the 1970s, which has at times had relocation policies for immigration. The Victorian government has run a decentralisation program since the 1960s, having had a ministerial position appointed and ongoing promotional and investment programs for stimulating growth in Regional Victoria. However policy has swung over the decades, primarily due to local development priorities and agendas and a lack of federal co-ordination to the problem. Issues include large quantities of e-waste and toxic waste going into

landfill A landfill site, also known as a tip, dump, rubbish dump, garbage dump, or dumping ground, is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the wast ...

. Australia does not have restrictions on the dumping of toxic materials that are common in other countries, such as dumping

Cathode Ray Tube A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. The images may represent electrical waveforms ( oscilloscope), ...

s which leach heavy metals into water catchments. Due to the lack of sufficient sites for toxic waste disposal large quantities of toxic waste are trucked between states to remote dumping grounds or exported overseas in ships.

Mining issues

Australia has the largest reserves of

uranium Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weak ...

in the world and there has been a number of enquiries on uranium mining. The

anti-nuclear movement in Australia Nuclear weapons testing, uranium mining and export, and nuclear power have often been the subject of public debate in Australia, and the anti-nuclear movement in Australia has a long history. Its origins date back to the 1972–1973 debate o ...

is actively opposing mining as well as preventing the construction of nuclear power plants. At least 150 leaks, spills and licence breaches have occurred at the Ranger uranium mine between 1981 and 2009.

Controversial land use projects

The following is a list of controversial development projects due to concerns of environmental effects. This list includes projects required to submit an Environmental Effects Statement.

Notes and references

External links

Australian Environment Portal

Envirotalk
– Australia's largest environmental discussion forum
Environment Victoria
{{DEFAULTSORT:Environmental Issues in Australia