Tasmanian Temperate Rainforests
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Tasmanian Temperate Rainforests
The Tasmanian temperate rain forests are a temperate broadleaf and mixed forests ecoregion in western Tasmania. The ecoregion is part of the Australasian realm, which includes Tasmania and Australia, New Zealand, New Guinea, New Caledonia, and adjacent islands. Rainforest communities in Australia are classified as closed forests in which the canopy comprises 70–100% cover.Reid, J. B., Hill, R. S., Brown, M. J. & Hovenden, M. J. (2005) ''Vegetation of Tasmania'', Australian Biological Resources Study. . It can be divided into tropical, subtropical, monsoon and temperate rainforest. Tasmanian rainforest is classified and as cool temperate rainforest, it represents the most floristically complex and best developed form of this forest type in Australia. In Tasmania, they can be found in the West, Savage River National Park, South West, North East and in patches on the East Coast. On the mainland of Australia, cool temperate rainforest have a wide variety of woodland trees, but Tasma ...
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Lake Pedder
Lake Pedder, once a glacial outwash lake, is a man-made impoundment and diversion lake located in the southwest of Tasmania, Australia. In addition to its natural catchment from the Frankland Range, the lake is formed by the 1972 damming of the Serpentine and Huon rivers by the Hydro Electric Commission of Tasmania for the purposes of hydroelectric power generation. As a result, the flooded Lake Pedder now has a surface area of approximately , making it Tasmania's second largest lake. The original and modified lake In early 20th century the original lake was named after Sir John Pedder, the first Chief Justice of Tasmania. The name of the original lake was officially transferred to the new man-made impoundment. Although the new Lake Pedder incorporates the original lake, it does not resemble it in size, appearance or ecology. The new lake consists of an impoundment contained by three dams: * Serpentine Dam – a high rockfill dam with a concrete upstream face on the Serpe ...
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Vascular Plants
Vascular plants (), also called tracheophytes () or collectively Tracheophyta (), form a large group of land plants ( accepted known species) that have lignified tissues (the xylem) for conducting water and minerals throughout the plant. They also have a specialized non-lignified tissue (the phloem) to conduct products of photosynthesis. Vascular plants include the clubmosses, horsetails, ferns, gymnosperms (including conifers), and angiosperms (flowering plants). Scientific names for the group include Tracheophyta, Tracheobionta and Equisetopsida ''sensu lato''. Some early land plants (the rhyniophytes) had less developed vascular tissue; the term eutracheophyte has been used for all other vascular plants, including all living ones. Historically, vascular plants were known as "higher plants", as it was believed that they were further evolved than other plants due to being more complex organisms. However, this is an antiquated remnant of the obsolete scala naturae, and the term ...
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Lagarostrobos Franklinii
''Lagarostrobos franklinii'' is a species of conifer native to the wet southwestern corner of Tasmania, Australia. It is often known as the Huon pine or Macquarie pine, although it is actually a podocarp (Podocarpaceae), not a true pine (Pinaceae). It is the sole species in the genus ''Lagarostrobos''; one other species ''L. colensoi'' (endemic to New Zealand) formerly included has been transferred to a new genus ''Manoao''. The genus was also formerly included in a broader circumscription of the genus ''Dacrydium''. In molecular phylogenetic analyses ''Lagorostrobos'' was found to be related to ''Parasitaxus'' (a parasitic and monotypic genus from New Caledonia) and ''Manoao'', but their exact relationships are unresolved. The wood is highly prized for its golden yellow colour, fine grain, and natural oils that resist rotting. The chemical giving the timber its unique smell and preservative qualities is methyl eugenol. It has been planted in the grounds of Crathes Castle, Aberd ...
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Athrotaxis Selaginoides
''Athrotaxis selaginoides'' is a species of ''Athrotaxis'', endemic to Tasmania in Australia, where it grows at 400–1,120 m altitude. In its habitat in the mountains, snow in winter is very usual. It is often called King Billy Pine or King William Pine (believed to be in reference to William Lanne an Aboriginal man), although it is not a true pine.Farjon, A. (2005). ''Monograph of Cupressaceae and Sciadopitys''. Royal Botanic Gardens, Kew. Description It is an evergreen coniferous tree growing to 20–30 m tall, with a trunk up to 1.5 m diameter. The leaves are claw-like, 7–18 mm long and 3–4 mm broad, arranged spirally on the shoots. The seed cones are globose, 15–30 mm diameter, with 20–30 spirally-arranged scales; they are mature about six months after pollination. The pollen cones are 4–5 mm long. Decline The main cause of past decline has been fire, with about one third of its habitat burnt in the twentieth century. Like the other two ''Athrotaxis'' species, ' ...
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Gymnosperms
The gymnosperms ( lit. revealed seeds) are a group of seed-producing plants that includes conifers, cycads, ''Ginkgo'', and gnetophytes, forming the clade Gymnospermae. The term ''gymnosperm'' comes from the composite word in el, γυμνόσπερμος ( el, γυμνός, translit=gymnos, lit=naked, label=none and el, σπέρμα, translit=sperma, lit=seed, label=none), literally meaning 'naked seeds'. The name is based on the unenclosed condition of their seeds (called ovules in their unfertilized state). The non-encased condition of their seeds contrasts with the seeds and ovules of flowering plants (angiosperms), which are enclosed within an ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, ''Torreya'', ''Ginkgo''. Gymnosperm lifecycles involve alternation of generations. They have a dominant diploid sporophyte phase and a reduced haploid gametophyte phase which is dependent on ...
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Eucryphia Lucida
''Eucryphia lucida'', the leatherwood, is a species of tree or large shrub endemic to forests of western Tasmania, Australia. An attractive plant used in both horticulture and apiculture, it was promoted by the Tasmanian Branch of the then SGAP as an alternative to the Tasmanian blue gum (''Eucalyptus globulus'') for Tasmania's floral emblem. It was described as ''E. billiarderi'' at one stage, this now being a synonym. Description Ranging from in height, it can sometimes grow to in favourable conditions. The small dark green glossy leaves are elliptical in shape and long. Appearing in spring and summer, the diameter white flowers have four petals and resemble small single roses and have a strong fragrance, especially on warmer days. The flower parts are often covered with a sticky sap. Flowering is followed by leathery capsules which mature in autumn. The species was first described by Jacques Labillardière. Distribution and habitat It is widespread and common in moiste ...
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Atherosperma Moschatum
''Atherosperma moschatum'', the southern sassafras or blackheart sassafras, is an evergreen tree native to the cool temperate rainforests of Tasmania, Victoria, and New South Wales in Australia. It is common in the rainforests of Tasmania and Victoria, but more scattered and rare in the higher altitudes of eastern New South Wales. The northernmost area is at Mount Grundy, west of Port Macquarie. Taxonomy The southern sassafras was first described by French naturalist Jacques Labillardière in 1806, and was the only member of the genus ''Atherosperma''. A subspecies, ''A. m.'' subsp.'' integrifolium'', has been considered a separate species. Its generic name is derived from the Ancient Greek ''ather'' "awn", and ''sperma'' "seed", from the hairs on the fruit, and the specific epithet ''moschatum'' is the Latin adjective meaning "musk-scented", from the smell of the bark. It is a member of the small family Atherospermataceae along with several other Australian rainforest trees inc ...
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Nothofagus Cunninghamii
''Nothofagus cunninghamii,'' commonly known as myrtle beech or Tasmanian myrtle, is the dominant species of cool temperate rainforests in Tasmania and Southern Victoria. It has low fire resistance and grows best in partial shade conditions. It has rough bark covered in mosses and epiphytic growth. Its leaves are triangular-shaped, small, and dark green with differentiated margins. It has white unisexual flowers. Description & Habit ''N. cunninghamii'' range from trees of up to 50 meters in protected rainforest valleys to low-growing alpine shrubs less than 1 m tall in exposed conditions. Maximum height is about 55 m. The leaves are simple and alternate, growing 0.5–1.5 cm long, and in Victoria up to 2 cm (0.8 in) long. The leaves are dark green, with new growth brilliant red, pink or orange in spring. They are triangular with irregular minute teeth with craspedodromous veins with all secondary veins terminate at leaf margins and spread from a central primary ...
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Angiosperms
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils are in the ...
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Climax Community
In scientific ecology, climax community or climatic climax community is a historic term for a community of plants, animals, and fungi which, through the process of ecological succession in the development of vegetation in an area over time, have reached a steady state. This equilibrium was thought to occur because the climax community is composed of species best adapted to average conditions in that area. The term is sometimes also applied in soil development. Nevertheless, it has been found that a "steady state" is more apparent than real, particularly across long timescales. Notwithstanding, it remains a useful concept. The idea of a single climax, which is defined in relation to regional climate, originated with Frederic Clements in the early 1900s. The first analysis of succession as leading to something like a climax was written by Henry Cowles in 1899, but it was Clements who used the term "climax" to describe the idealized endpoint of succession. Frederic Clements' use ...
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Mixed Forest
Temperate broadleaf and mixed forest is a temperate climate terrestrial habitat type defined by the World Wide Fund for Nature, with broadleaf tree ecoregions, and with conifer and broadleaf tree mixed coniferous forest ecoregions. These forests are richest and most distinctive in central China and eastern North America, with some other globally distinctive ecoregions in the Caucasus, the Himalayas, Southern Europe, Australasia, Southwestern South America and the Russian Far East. Ecology The typical structure of these forests includes four layers. * The uppermost layer is the canopy composed of tall mature trees ranging from high. Below the canopy is the three-layered, shade-tolerant understory that is roughly shorter than the canopy. * The top layer of the understory is the sub-canopy composed of smaller mature trees, saplings, and suppressed juvenile canopy layer trees awaiting an opening in the canopy. * Below the sub-canopy is the shrub layer, composed of low growi ...
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Fungus
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true f ...
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