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Eastern Dwarf Galaxias
''Galaxiella pusilla'', commonly known as dwarf galaxias or eastern dwarf galaxias, is a small species of freshwater fish from the galaxiid family, found only in the southeastern Australian states of Victoria and Tasmania. The species is officially designated as Endangered on the IUCN Red List. Description ''Galaxiella pusilla'' is a tiny, slender fish with a scaleless body, soft-rayed fins, and a single dorsal fin positioned well back on the body, like other members of the Galaxiidae family,. The body depth is greatest mid-abdomen, tapering to both head and tail, while the lateral line follows the dorsal profile. The head is short and blunt with large eyes, while the mouth is small, terminal and oblique with jaws roughly equal in length. The dorsal and anal fins are opposite, short-based and rounded. The caudal fin is long and rounded, with fleshy flanges extending forward almost to the bases of the dorsal and anal fins. A fleshy abdominal keel (more pronounced in males) ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Mack (ornithologist)
George Mack (1899-1963) was mainly a museum ornithologist and collector, but also worked as an ichthyologist. He migrated from Britain to Western Australia in 1919. He worked at the National Museum of Victoria from 1923 to 1945. During this time, he published a revision of the Australian species of the fairy-wren genus ''Malurus'' and described several species of fish, for example '' Galaxiella pusilla''. He then worked at the Queensland Museum from 1945, rising to become director in 1963, the year of his death. It was his controversial action in shooting a scarlet robin during the Royal Australasian Ornithologists Union (RAOU) campout in Marlo, Victoria Victoria most commonly refers to: * Queen Victoria (1819–1901), Queen of the United Kingdom and Empress of India * Victoria (state), a state of Australia * Victoria, British Columbia, Canada, a provincial capital * Victoria, Seychelles, the capi ... in 1935 that catalysed change in the RAOU's attitude to collecting. Referenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines play an important role in schooling behavior, predation, and orientation. Early in the evolution of fish, some of the sensory organs of the lateral line were modified to function as the electroreceptors called ampullae of Lorenzini. The lateral line system is ancient and basal to the vertebrate clade, as it is found in fishes that diverged over 400 million years ago. Function The lateral line system allows the detection of movement, vibration, and pressure gradients in the water surrounding an animal. It plays an essential role in orientation, predation, and fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pond
A pond is a small, still, land-based body of water formed by pooling inside a depression (geology), depression, either naturally or artificiality, artificially. A pond is smaller than a lake and there are no official criteria distinguishing the two, although defining a pond to be less than in area, less than in depth and with less than 30% of its area covered by aquatic plant, emergent vegetation helps in distinguishing the ecology of ponds from those of lakes and wetlands.Clegg, J. (1986). Observer's Book of Pond Life. Frederick Warne, London Ponds can be created by a wide variety of natural processes (e.g. on floodplains as cutoff river channels, by glacial processes, by peatland formation, in coastal dune systems, by beavers). They can simply be isolated depressions (such as a Kettle (landform), kettle hole, vernal pool, Prairie Pothole Region, prairie pothole, or simply natural undulations in undrained land) filled by runoff, groundwater, or precipitation, or all three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially in the soils. Wetlands form a transitional zone between waterbodies and dry lands, and are different from other terrestrial or aquatic ecosystems due to their vegetation's roots having adapted to oxygen-poor waterlogged soils. They are considered among the most biologically diverse of all ecosystems, serving as habitats to a wide range of aquatic and semi-aquatic plants and animals, with often improved water quality due to plant removal of excess nutrients such as nitrates and phosphorus. Wetlands exist on every continent, except Antarctica. The water in wetlands is either freshwater, brackish or saltwater. The main types of wetland are defined based on the dominant plants and the source of the water. For example, ''marshes'' ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Vegetation
Aquatic plants, also referred to as hydrophytes, are vascular plants and Non-vascular plant, non-vascular plants that have adapted to live in aquatic ecosystem, aquatic environments (marine ecosystem, saltwater or freshwater ecosystem, freshwater). In lakes, rivers and wetlands, aquatic vegetations provide cover for aquatic animals such as fish, amphibians and aquatic insects, create substrate (marine biology), substrate for benthic invertebrates, produce oxygen via photosynthesis, and serve as food for some herbivorous wildlife. Familiar examples of aquatic plants include Nymphaeaceae, waterlily, Nelumbo, lotus, duckweeds, mosquito fern, floating heart, water milfoils, Hippuris, mare's tail, water lettuce, water hyacinth, and algae. Aquatic plants require special adaptation (biology), adaptations for prolonged inundation in water, and for buoyancy, floating at the water surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresh Water
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salt (chemistry), salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral water, mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen water, frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ice pellets, sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranea (geography), subterranean subterranean river, rivers and underground lake, lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Life Cycle
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the process repeating in a cyclic fashion. "The concept is closely related to those of the life history, Developmental biology, development and ontogeny, but differs from them in stressing renewal." Transitions of form may involve growth, asexual reproduction, or sexual reproduction. In some organisms, different "generations" of the species succeed each other during the life cycle. For Embryophyte, plants and many algae, there are two multicellular stages, and the life cycle is referred to as alternation of generations. The term life history is often used, particularly for organisms such as the red algae which have three multicellular stages (or mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bass Strait
Bass Strait () is a strait separating the island state of Tasmania from the Mainland Australia, Australian mainland (more specifically the coast of Victoria (Australia), Victoria, with the exception of the land border across Boundary Islet). The strait provides the most direct waterway between the Great Australian Bight and the Tasman Sea, and is also the only maritime route into the economically prominent Port Phillip Bay. Formed 8,000 years ago by rising sea levels at the end of the last glacial period, the strait was named after English explorer and physician George Bass (1771–1803) by History of Australia (1788–1850), European colonists. Extent The International Hydrographic Organization defines the limits of Bass Strait as follows: :''On the west.'' The eastern limit of the Great Australian Bight [being a line from Cape Otway, Australia, to King Island (Tasmania), King Island and thence to Cape Grim, the northwest extreme of Tasmania]. :''On the east.'' The western li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flinders Island
Flinders Island, the largest island in the Furneaux Group, is a island in the Bass Strait, northeast of the island of Tasmania. Today Flinders Island is part of the state of Tasmania, Australia. It is from Cape Portland, Tasmania, Cape Portland and is located on 40° south, a latitude, zone known as the Roaring Forties. History Prehistory Flinders Island was first inhabited at least 35,000 years ago, when people made their way from Australia across the then land-bridge which is now Bass Strait. A population remained until about 4,500 years ago, succumbing to thirst and hunger following an acute El Niño climate shift. European Arrival Some of the south-eastern islands of the Furneaux Group were first recorded in 1773 by British navigator Tobias Furneaux, commander of , the support vessel with James Cook on Second voyage of James Cook, Cook's second voyage. In February 1798, British navigator Matthew Flinders charted some of the southern islands, using one of the schooner '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dandenong Creek
The Dandenong Creek (Aboriginal Bunwurrung: ''Narra Narrawong'' or ''Dandinnong'') is an urban creek of the Port Phillip catchment, located in the eastern and south-eastern Greater Melbourne region of the Australian east coast state of Victoria. The creek descends approximately over its course of before joining the Eumemmerring Creek to form the Patterson River (of which it can be considered the ''de facto'' main stem) and eventually draining into the Beaumaris Bay. Together with its distributary Mordialloc Creek and the culvert-linked Kananook Creek and Elster Creek, the so-called "Dandenong Catchment" has an overall catchment of approximately . Etymology The traditional custodians of the land surrounding what is now known as the Dandenong Creek were the indigenous Bunurong people of the Kulin nation who referred to the creek as ''Narra Narrawong''; while others gave the creek the name Dandenong, sometimes spelled as ''Dand-y-non'' or ''Tanjenong'' by early set ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melbourne
Melbourne ( , ; Boonwurrung language, Boonwurrung/ or ) is the List of Australian capital cities, capital and List of cities in Australia by population, most populous city of the States and territories of Australia, Australian state of Victoria (state), Victoria, and the second most-populous city in Australia, after Sydney. The city's name generally refers to a metropolitan area also known as Greater Melbourne, comprising an urban agglomeration of Local Government Areas of Victoria#Municipalities of Greater Melbourne, 31 local government areas. The name is also used to specifically refer to the local government area named City of Melbourne, whose area is centred on the Melbourne central business district and some immediate surrounds. The metropolis occupies much of the northern and eastern coastlines of Port Phillip Bay and spreads into the Mornington Peninsula, part of West Gippsland, as well as the hinterlands towards the Yarra Valley, the Dandenong Ranges, and the Macedon R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bairnsdale
Bairnsdale (locally ) (Gunai language, Ganai: ''Wy-yung'') is a city in East Gippsland, Victoria (Australia), Victoria, Australia, situated in a region traditionally inhabited by the Tatungalung clan of the Gunaikurnai people. The estimated population of the Bairnsdale urban area was 17,666 at June 2023. The city serves as a major regional centre of eastern Victoria, alongside Traralgon and Sale, Victoria, Sale, acting as the commercial hub for the East Gippsland region and the seat of local government for the Shire of East Gippsland. Bairnsdale was first proclaimed as a shire on 16 July 1868 and later elevated to city status on 14 July 1990. Accessed at State Library of Victoria, La Trobe Reading Room. History Indigenous Heritage Gunaikurnai People The Gunaikurnai people are the traditional owners of Gippsland, including the region where Bairnsdale is located. There are approximately 3,000 Gunaikurnai people, whose traditional territory encompasses both coastal and inland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
