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Tamar Wetlands Important Bird Area
The Tamar Wetlands Important Bird Area is a linear stretch of wetland habitat, with an area of 51 km2, extending along the upper half of the estuarine Tamar River in northern Tasmania, Australia. Description The Important Bird Area (IBA) comprises the open water of the Tamar, with its intertidal mudflats and associated wetland vegetation, from Launceston downstream to Batman Bridge, halfway to the sea. The mudflats are fringed by saltmarsh and extensive reed beds, and the IBA is bordered by a landscape mosaic of farmland and production forests. It includes the 46 km2 Tamar River Conservation Area and overlaps the Native Point Conservation Reserve. The average maximum temperatures in the region are 13 °C in winter and 24 °C in summer.BirdLife International. (2011). Important Bird Areas factsheet: Tamar Wetlands. Downloaded from http://www.birdlife.org on 2011-10-29. Birds The site has been identified as an IBA by BirdLife International because it suppor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Marsh
A salt marsh or saltmarsh, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides. It is dominated by dense stands of salt-tolerant plants such as herbs, grasses, or low shrubs. These plants are terrestrial in origin and are essential to the stability of the salt marsh in trapping and binding sediments. Salt marshes play a large role in the aquatic food web and the delivery of nutrients to coastal waters. They also support terrestrial animals and provide coastal protection. Salt marshes have historically been endangered by poorly implemented coastal management practices, with land reclaimed for human uses or polluted by upstream agriculture or other industrial coastal uses. Additionally, sea level rise caused by climate change is endangering other marshes, through erosion and submersion of otherwise tidal marshes. However, recent ackn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australasian Bittern
The Australasian bittern (''Botaurus poiciloptilus''), also known as the brown bittern or matuku hūrepo, and also nicknamed the "bunyip bird", is a large bird in the heron family Ardeidae. A secretive bird with a distinctive booming call, it is more often heard than seen. Australasian bitterns are endangered in both Australia and New Zealand. Taxonomy German zoologist Johann Georg Wagler described the Australasian bittern in 1827. It is one of four similarly-plumaged species in the genus ''Botaurus''. Description The length is from 650 to 750 mm with adults being similar between the sexes while the male is significantly larger. The bird has a deep brown upper surface, mauled with buff on wing coverts; face and eyebrow buff, with dark brown stripe running from bill to erectile plumes at sides of neck. Under surface buff, striped with brown. The face skin is a dull green as are the legs and feet, it possesses a dark brown bill, yellow eyes, and the base of the lower mandible is gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pied Oystercatcher
The pied oystercatcher (''Haematopus longirostris'') is a species of oystercatcher. It is a wading bird native to Australia and commonly found on its coastline. The similar South Island pied oystercatcher (''H. finschi'') occurs in New Zealand. Description The name "oystercatcher" is something of a misnomer for this species, because they seldom eat oysters, which are found mainly on rocky coastlines. Pied oystercatchers frequent sandy coastlines, where they feed mainly on bivalve molluscs, which are prised apart with their specially adapted bill. These adaptations allow the Pied oystercatchers to slip their bills between the ventral edges of these shelled organisms, further allowing them to sever the shells and reach the edible flesh inside. This Australian species is easily recognized by the characteristic 5–8 cm long orange-red beak, slender pink legs and black and white plumage. With the wings extended, a white wing-stripe is also visible. The male and female sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chestnut Teal
The chestnut teal (''Anas castanea'') is a dabbling duck found in Australia. It is protected under the National Parks and Wildlife Act 1974. Taxonomy The chestnut teal was described by the English naturalist Thomas Campbell Eyton in 1838 under the binomial name ''Mareca castanea''. The specific epithet ''castanea'' is from the Latin ''castaneus'' for "chestnut-coloured" or "chestnut-brown". A large molecular phylogentic study that compared mitochondrial DNA sequences from ducks, geese and swans in the family Anatidae found that the chestnut teal is a sister species to the Sunda teal (''Anas gibberifrons'') that is endemic to Indonesia. Description The chestnut teal is darker and a slightly bigger bird than the grey teal. The male has a distinctive green coloured head and mottled brown body. The female has a brown head and mottled brown body. The female is almost identical in appearance to the grey teal. The female chestnut teal has a loud penetrating "laughing" quack repeated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding important sites for birds, maintaining and restoring key bird habitats, and empowering conservationists worldwide. It has a membership of more than 2.5 million people across 116 country partner organizations, including the Royal Society for the Protection of Birds, the Wild Bird Society of Japan, the National Audubon Society and American Bird Conservancy. BirdLife International has identified 13,000 Important Bird and Biodiversity Areas and is the official International Union for Conservation of Nature’s Red List authority for birds. As of 2015, BirdLife International has established that 1,375 bird species (13% of the total) are threatened with extinction ( critically endangered, endangered or vulnerable). BirdLife International p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamar River Conservation Area
The Tamar Conservation Area covers approximately 4,633 ha on the Tamar River estuary in Tasmania. It includes the Tamar Island Wetlands Reserve and a stretches through the upper part of the Tamar Estuary from St Leonards to the Batman Bridge. It is a popular area for birdwatching and is about 15 minutes drive from Launceston. There are approximately 3.2 km of walking tracks at the wetlands including a boardwalk for easy access to the island. The site lies within the Tamar Wetlands Important Bird Area, identified as such by BirdLife International because of its importance in supporting over 1% of the world populations of pied oystercatchers and chestnut teals. The Tasmanian State of the Environment report in 2003 described the Tamar estuary as one of the five catchments statewide with the highest percentage area under urban and suburban land use. Proposed pulp mill In May 2007 both major political parties in Tasmania attempted to push through the development of a 1.5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Bed
A reedbed or reed bed is a natural habitat found in floodplains, waterlogged depressions and estuaries. Reedbeds are part of a succession from young reeds colonising open water or wet ground through a gradation of increasingly dry ground. As reedbeds age, they build up a considerable litter layer that eventually rises above the water level and that ultimately provides opportunities in the form of new areas for larger terrestrial plants such as shrubs and trees to colonise. Artificial reedbeds are used to remove pollutants from greywater, and are also called constructed wetlands. Types Reedbeds vary in the species that they can support, depending upon water levels within the wetland system, climate, seasonal variations, and the nutrient status and salinity of the water. ''Reed swamps'' have 20 cm or more of surface water during the summer and often have high invertebrate and bird species use. ''Reed fens'' have water levels at or below the surface during the summer and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batman Bridge
The Batman Bridge is a modern road bridge that carries the Batman Highway across the Tamar River, between Whirlpool Reach, Hillwood at its eastern end and Sidmouth / Deviot midpoint at its western end, in north Tasmania, Australia. The bridge connects the Batman Highway with the West Tamar Highway (state route A7) and the East Tamar Highway (state route A8). The bridge overlooks the Deviot Sailing Club and is named in honour of John Batman, a Launceston businessman and co-founder of Melbourne. Design features Built between 1966 and 1968, it was the first cable-stayed bridge in Australia and among the first such bridges in the world. The main span is long, suspended from a steel A-frame tower. The deck is wide. The tower is on the west bank of the Tamar river, on a solid dolerite rock base which carries 78% of the weight of the main span. The length of the bridge is between abutments. The east bank is soft clay not capable of supporting a bridge. A causeway carries the hig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Launceston, Tasmania
Launceston () or () is a city in the north of Tasmania, Australia, at the confluence of the North Esk and South Esk rivers where they become the Tamar River (kanamaluka). As of 2021, Launceston has a population of 87,645. Material was copied from this source, which is available under Creative Commons Attribution 4.0 International License/ref> Launceston is the second most populous city in Tasmania after the state capital, Hobart. As of 2020, Launceston is the 18th largest city in Australia. Launceston is fourth-largest inland city and the ninth-largest non-capital city in Australia. Launceston is regarded as the most liveable regional city, and was one of the most popular regional cities to move to in Australia from 2020 to 2021. Launceston was named Australian Town of the Year in 2022. Settled by Europeans in March 1806, Launceston is one of Australia's oldest cities and it has many historic buildings. Like many places in Australia, it was named after a town in the United Ki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudflat
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Austral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_(cropped).jpg "Click for more on -> Australasian Bittern")
