Ruqayyah Snyder
Lichens are composite organisms that are formed from the symbiosis of certain fungi and algae or cyanobacteria. They are found in a variety of habitats and environments in Australia, from the tropics of Queensland to the alpine areas of Tasmania and the arid interior. There are over 3000 known species of lichen in Australia, with some species being endemic to specific regions, such as Western Australia. Lichens are also found in Antarctica, with some species having distributions that include both Antarctica and parts of Australia.
| Characteristics | Values |
|---|---|
| Number of known species in Australia | 3,000-3,500 |
| Number of known species in Australia and its territories | 3,200-4,088 |
| Number of known species in Western Australia | Far fewer than in Eastern Australia |
| Number of endemic species in Australia | 1,000 |
| Number of endemic species in Australia and its territories | 1,495 |
| Number of endemic species in the six states, the Australian Capital Territory, and the Northern Territory | 1,370 |
| Number of known species in the Australian Antarctic | 3 |
| Habitats | All, including the arid interior |
| Substrates | Wood, bark, rock, leaves, stone masonry, concrete |
| Locations | Queensland, Tasmania, New South Wales, Victoria, Western Australia, Northern Territory, Australian Capital Territory, Antarctica, Papua New Guinea, New Zealand, Chile, Uruguay, Mauritius, Madagascar, Indian Ocean islands, parts of Asia, the Pacific, South America, Macaronesia, China, Europe, North America, South America, Africa |
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What You'll Learn
- Lichens are found in all habitats in Australia, including the arid interior
- They are diverse in tropical and temperate regions, especially near the east coast
- Some species are found in Western Australia, but more are known from the east
- Lichens are used as environmental indicators for pollution monitoring
- They are also found in Antarctica, surviving in extreme environments
Lichens are found in all habitats in Australia, including the arid interior
Lichens are composite organisms that are found in all habitats in Australia, including the arid interior. They are made up of a symbiotic relationship between a fungus and an alga or cyanobacterium. There are 3 main types of lichens: crustose, foliose, and fruticose. Crustose lichens form a thin crust on the surface they grow on, while foliose lichens form leaf-like lobes. Fruticose lichens, on the other hand, have a shrubby growth habit with round branches.
Lichens are known to occupy a wide variety of substrates, including wood, bark, rock, leaves, stone masonry, and even concrete. They are found in both natural environments and urban areas, although their tolerance for air pollution, particularly sulphur dioxide, is lower. Lichens are also known to have a slow growth rate, with some species in continental Antarctica growing as little as 1 cm per 1,000 years.
In Australia, lichens are especially diverse in tropical and temperate regions, particularly along the east coast from north Queensland to Tasmania. While there are fewer species in the semi-arid and arid parts of the country, their biomass in these regions is still significant. The ability of lichens to survive in extreme environments, including long periods of drought, makes them well-adapted to the varying Australian climate.
There are over 3,000 known species of lichens in Australia, with some sources citing up to 4,000 species, about 1,000 of which are endemic. Some examples of widespread lichens in Australia include Rhizocarpon geographicum, found on all continents, and Protoparmelia badia, found in alpine areas of southeast Australia, Antarctica, and montane areas in New Zealand and Papua New Guinea.
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They are diverse in tropical and temperate regions, especially near the east coast
Australia is home to a diverse range of lichens, with over 3,000 known species found across the country, including its arid interior. Lichens are composite organisms, typically consisting of a fungus and a green alga or cyanobacterium in a symbiotic relationship. They are able to survive in a variety of habitats, from the tropics to the Antarctic, showcasing their adaptability and ecological significance.
In Australia, lichens are especially diverse in tropical and temperate regions, particularly along the east coast, from North Queensland to Tasmania. This diversity can be attributed to the favourable environmental conditions in these regions. Some specific locations along the east coast that support a variety of lichen species include the East Kimberley region of Western Australia, Morton National Park in New South Wales, and Magnetic Island in Queensland.
The tropical regions of northern Australia host a variety of lichen species, including both pantropical and paleotropical species. Pantropical species, such as Dirinaria picta and Pyxine cocoes, are found in tropical regions worldwide, while paleotropical species, like Pertusaria cicatricosa and Phyllopsora africana, are unique to specific areas within the tropics. These paleotropical species are found in Queensland and northern New South Wales, showcasing the diversity of lichen species in these coastal regions.
The diversity of lichens in eastern Australia is further highlighted by the presence of species shared with other continents, particularly South America. For example, Tephromela alectoronica and Usnea inermis are found in both eastern Australia and South America. This distribution pattern suggests a connection between the lichen flora of these regions, which may be due to similar ecological conditions or historical biogeographical factors.
The temperate regions along the east coast, including New South Wales, Victoria, and Tasmania, also support a variety of lichen species. For example, Pseudocyphellaria beccarii is found in New South Wales and Queensland, showcasing its adaptability to different climatic conditions within the temperate zone. Additionally, the presence of lichens in Tasmania, such as Pseudocyphellaria argyracea and Strigula phaea, further emphasizes the diversity of lichen species in these temperate regions.
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Some species are found in Western Australia, but more are known from the east
There are over 3,000 species of lichen in Australia, with some sources citing 3,500 and others 4,088. They are found in all habitats, including the arid interior, and across all six states and territories.
Lichens are composite organisms made up of a fungus and an alga or cyanobacterium in a symbiotic relationship. They are photosynthetic and are found in a variety of natural and urban environments, including wood, bark, rock, leaves, stone masonry, and concrete.
While some lichen species are found in Western Australia, more are known from the east of the country. This may be due in part to the fact that more research has been conducted on eastern Australian lichens. For example, the species Diploschistes conceptionis is found in Western Australia, Chile, and Uruguay, but was only identified as being present in Western Australia in 2009. Similarly, Tephromela alectoronica and Usnea inermis are Australian-South American species found in both eastern and Western Australia but are more commonly found in the east.
Lichens are particularly diverse in tropical and temperate regions, especially near the east coast, from north Queensland to Tasmania. Some species found in tropical Australia are also found throughout the world's tropics, while others are found in large parts of the non-American tropics. For example, Dirinaria picta, Haematomma africanum, Pyxine cocoes, and Strigula subtilissima are found in northern Australia and throughout the tropics. Occasionally, tropical and subtropical species may extend into temperate areas if conditions are mild.
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Lichens are used as environmental indicators for pollution monitoring
Lichens are found in a diverse range of habitats across Australia, from the tropical rainforests of Queensland to the arid deserts of the Outback. They thrive on trees, rocks, and even bare soil, but their presence and health can provide valuable insights into the environmental conditions of an area. This is because lichens are You may want to see also Lichens are found in a wide variety of habitats in Australia, from the arid interior to the tropics. They grow on diverse substrates, including wood, bark, rock, leaves, stone masonry, and concrete. Australia is home to about 3,000-3,500 known species of lichen, with about 1,000 endemic species. Some species are unique to Western Australia, while others are shared between Eastern Australia and South America. The presence of lichens in Antarctica provides valuable insights into the region's ecology and climate. The study of lichen distribution and growth rates helps scientists understand the effects of climate change in this fragile ecosystem. Antarctica's unique and challenging environment serves as a natural laboratory for researching lichen adaptability and resilience. One example of a lichen species found in both Australia and Antarctica is Rhizocarpon geographicum. It is fairly common in at least the southeast and southwest of Australia and has also been found in Antarctica. Another example is Protoparmelia badia, which inhabits the alpine areas of southeast Australia and Antarctica, as well as montane areas in New Zealand and Papua New Guinea. The ability of lichens to survive in Antarctica's harsh conditions underscores their adaptability and ecological significance. Their presence in this extreme environment highlights the diversity and resilience of life, even in the most inhospitable places on Earth. You may want to see also Lichens are found in all habitats in Australia, including the arid interior. They are found in a wide variety of substrates, including wood, bark, rock, leaves, stone masonry, and concrete. They are found in both urban and natural environments, though fewer species can tolerate air pollution, especially sulphur dioxide. There are 3,500 known species of lichenised fungi in Australia, with about 1,000 endemic species. Some examples of lichens found in Australia include Rhizocarpon geographicum, Strigula phaea, and Pseudocyphellaria neglecta. Yes, lichens are found in most areas of Antarctica that are capable of supporting plant life. Lichens have been collected from as far south as 86°30'. They can survive the extreme conditions in Antarctica by exhibiting net photosynthesis while frozen at temperatures as low as -20°C and absorbing water vapour from snow and ice.Giraffes in Australia: An Unexpected Resident?
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They are also found in Antarctica, surviving in extreme environments
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