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Blanche Rock
Blanche Rock is a 0.07 ha dolerite islet in south-eastern Australia. It is part of the Actaeon Island Group, lying close to the south-eastern coast of Tasmania, at the southern entrance to the D'Entrecasteaux Channel between Bruny Island and the mainland. It is part of the South Bruny National Park.Brothers, Nigel; Pemberton, David; Pryor, Helen; & Halley, Vanessa. (2001). ''Tasmania’s Offshore Islands: seabirds and other natural features''. Tasmanian Museum and Art Gallery: Hobart. Fauna Recorded breeding seabird and wader species are the Pacific gull, sooty oystercatcher and black-faced cormorant The black-faced cormorant (''Phalacrocorax fuscescens''), also known as the black-faced shag, is a medium-sized member of the cormorant family. Upperparts, including facial skin and bill, are black, with white underparts. It is endemic to coas .... References Islands of Tasmania Protected areas of Tasmania South Bruny National Park {{Tasmania-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is about and one hectare contains about . In 1795, when the metric system was introduced, the ''are'' was defined as 100 square metres, or one square decametre, and the hectare ("hecto-" + "are") was thus 100 ''ares'' or km2 (10,000 square metres). When the metric system was further rationalised in 1960, resulting in the International System of Units (), the ''are'' was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI and whose use is "expected to continue indefinitely". Though the dekare/decare daa (1,000 m2) and are (100 m2) are not officially "accepted for use", they are still used in some contexts. Description The hectare (), although not a unit of SI, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diabase
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). ''Diabase'' is the preferred name in North America, while ''dolerite'' is the preferred name in the rest of the English-speaking world, where sometimes the name ''diabase'' refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name ''microgabbro''. The name ''diabase'' comes from the French ', and ultimately from the Greek - meaning "act of crossing over, transition". Petrography Diabase normally has a fine but visible texture of euhedral lath-shaped plagioclase crystals (62%) set in a finer matrix of clinopyroxene, typically augite (20–29%), with minor olivine (3% up to 12% in olivine diabase), magnetite (2%), an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actaeon Island
The Actaeon Island, part of the Actaeon Island Group, is a dolerite island and game reserve located at the southern entrance to the D'Entrecasteaux Channel between Bruny Island and the mainland, that lies close to the south-eastern coast of Tasmania, Australia. The island is named for the ship , which wrecked there in 1822. There is a navigation beacon on the highest point, .Brothers, Nigel; Pemberton, David; Pryor, Helen; & Halley, Vanessa. (2001). ''Tasmania’s Offshore Islands: seabirds and other natural features''. Tasmanian Museum and Art Gallery: Hobart. Actaeon Island Group The Actaeon Island Group consists of: * Actaeon Island * Blanche Rock * Courts Island * Southport Island * Sterile Island * The Friars * The Images Fauna Recorded breeding seabird and wader species are the little penguin, short-tailed shearwater and sooty oystercatcher. European rabbits occur on the island and seals occasionally haul-out there. The metallic skink is present. The endanger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of Tasmania , established_title2 = Federation , established_date2 = 1 January 1901 , named_for = Abel Tasman , demonym = , capital = Hobart , largest_city = capital , coordinates = , admin_center = 29 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D'Entrecasteaux Channel
The D'Entrecasteaux Channel is a body of water located between Bruny Island and the south-east of the mainland of Tasmania, Australia. The channel is the mouth for the estuaries of the Derwent and the Huon Rivers and empties into the Tasman Sea of the South Pacific Ocean. It was sighted by Abel Tasman in 1642 and surveyed in 1792 by Bruni d'Entrecasteaux. Towns on the D'Entrecasteaux Channel include Snug, Margate, Kettering, Woodbridge, Flowerpot, Middleton and Gordon. History According to '' The Mercury'' newspaper, the channel "..... was discovered on April 20, 1792, by the celebrated French "Vice-Admiral Bruni D'Entrecasteaux, who, in the ships ''Recherche'' and ''Esperance'', was searching for ill-fated ''La Perouse''. Visiting Van Diemen's Land for the first time, he was attempting to find an anchorage in Adventure Bay, when, being himself ill in bed, the ships' navigators entered the channel to the west of Bruny Island, instead of going to the eastward of it. Thus, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruny Island
Bruny Island ( Nuenonne: Lunawanna-alonnah) is a island located off the south-eastern coast of Tasmania, Australia. The island is separated from the Tasmanian mainland by the D'Entrecasteaux Channel, and its east coast lies within the Tasman Sea. Storm Bay is located to the island's northeast. Both the island and the channel are named after French explorer, Antoine Bruni d'Entrecasteaux. Its traditional Aboriginal name is lunawanna-allonah, which survives as the name of two island settlements, Alonnah and Lunawanna. Geography Geologically, Bruny Island is actually two land masses—North Bruny and South Bruny—that are joined by a long, narrow, sandy isthmus, often referred to as "The Neck". The island has a total length of approximately . The holiday village of Dennes Point is located in North Bruny, while South Bruny is the site of the towns of Alonnah, Adventure Bay and Lunawanna. Outside its settlements, the island is covered in grazing fields and large tracts o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Bruny National Park
The South Bruny National Park is a national park located on Bruny Island, Tasmania, Australia, about south of Hobart. The park contains the Cape Bruny Lighthouse. The highest point of the park is Mount Bruny at . History The park also embraces the Labillardiere Peninsula, named in honour of the French botanist Jacques Labillardière, author of the first general flora of Australia and a member of Bruni d'Entrecasteaux's expedition. The Nuenonne people once occupied South Bruny and there are several cultural sites around the national park, all of which are protected and some of which are publicized. Dolerite cliffs categorize part of the dramatic coastline, with continuous expanses of beaches from Fluted Cape to the southern tip, continuing around Cloudy Bay, and encompass the whole southern part of Great Taylors Bay. South Bruny was declared a National Park in 1997, mostly for its coastal scenery, as well as Aboriginal and historic heritage and to protect a number of threaten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania Parks And Wildlife Service
Tasmania Parks and Wildlife Service is the government body responsible for protected areas of Tasmania on public land, such as national parks, historic sites and regional reserves. Historically it has also had responsibility for managing wildlife, including game. History The National Parks and Wildlife Service was set up on 1 November 1971 after controversy surrounding the proposal to flood Lake Pedder and the unsuccessful attempts to prevent the project going ahead. A Select Committee formed from the interested parties recommended the establishment of a professional park service to properly manage the natural environment in Tasmania. The service initially had a staff of 59. The '' National Parks and Wildlife Act 1970'' had made provisions for the conservation of fauna and flora and the establishment and management of national parks. Mount William, Maria Island and Narawntapu National Parks were set up and Macquarie Island designated as a nature reserve. The creation of an Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seabird
Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same environmental problems and feeding niches have resulted in similar adaptations. The first seabirds evolved in the Cretaceous period, and modern seabird families emerged in the Paleogene. In general, seabirds live longer, breed later and have fewer young than other birds do, but they invest a great deal of time in their young. Most species nest in colonies, which can vary in size from a few dozen birds to millions. Many species are famous for undertaking long annual migrations, crossing the equator or circumnavigating the Earth in some cases. They feed both at the ocean's surface and below it, and even feed on each other. Seabirds can be highly pelagic, coastal, or in some cases spend a part of the year away from the sea entirely. Seabirds and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wader
245px, A flock of Dunlins and Red knots">Red_knot.html" ;"title="Dunlins and Red knot">Dunlins and Red knots Waders or shorebirds are birds of the order Charadriiformes commonly found wikt:wade#Etymology 1, wading along shorelines and mudflats in order to foraging, forage for food crawling or burrowing in the mud and sand, usually small arthropods such as aquatic insects or crustaceans. The term "wader" is used in Europe, while "shorebird" is used in North America, where "wader" may be used instead to refer to long-legged wading birds such as storks and herons. There are about 210 species of wader, most of which live in wetland or coastal environments. Many species of Arctic and temperate regions are strongly migratory, but tropical birds are often resident, or move only in response to rainfall patterns. Some of the Arctic species, such as the little stint, are amongst the longest distance migrants, spending the non- breeding season in the southern hemisphere. Many of the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Gull
The Pacific gull (''Larus pacificus'') is a very large gull, native to the coasts of Australia. It is moderately common between Carnarvon in the west, and Sydney in the east, although it has become scarce in some parts of the south-east, as a result of competition from the kelp gull, which has "self-introduced" since the 1940s. Much larger than the ubiquitous silver gull, and nowhere near as common, Pacific gulls are usually seen alone or in pairs, loafing around the shoreline, steadily patrolling high above the edge of the water, or (sometimes) zooming high on the breeze to drop a shellfish or sea urchin onto rocks. Diet The gulls' diet consists of a number various fish species and invertebrates. They frequently consume crabs, most often the species ''Ovalipes australiensis'' and ''Paragrapsus gaimardii.'' They also commonly eat '' Platycephalus bassensis'' (sand flatheads) and cephalapods, both of which are sourced from their regular consumption of waste from fish which hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
