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Giant Swan
''Cygnus falconeri'', the giant swan, ( Maltese: ) is an extinct, very large swan known from Middle Pleistocene-aged deposits from Malta and Sicily. Its dimensions are described as exceeding those of the living mute swan by one-third, which would give a bill-to-tail length of about (based on 145–160 cm for '' C. olor''.). By comparison to the bones of living swans, it can be estimated that it weighed around and had a wingspan of about . It would have been taller, though not heavier, than the region's dwarf elephants. Due to its size, it may have been flightless. It became extinct before the increase in human activity in the region (see Holocene extinction event), so its disappearance is thought to have resulted from extreme climate fluctuations or the arrival of superior predators and competitors. Its bones are exhibited at Għar Dalam museum in Birżebbuġa Birżebbuġa (; sometimes shortened to B'Buġa) is a seaside town in the Southern Region of Malta, close to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeoloxodon Falconeri
''Palaeoloxodon falconeri'', also known as the pygmy elephant, Maltese pygmy elephant, or Sicilian dwarf elephant, is an extinct Siculo- Maltese species of elephant that was derived from the straight-tusked elephant. It is amongst the smallest of all dwarf elephants. Chronology ''Palaeoloxodon'' ''falconeri'' derives from the 4 metre tall straight-tusked elephant (''P''. ''antiquus''), which arrived in Europe approximately 800,000 years ago. The oldest radiometrically dated fossils of ''Palaeoloxodon'' on Sicily date to around 500,000 years ago while the ones found in Għar Dalam on Malta date to around 450,000 years ago. ''P. falconeris ancestors most likely reached Sicily from the Italian mainland, likely via a series of islands that now form part of the southern Calabrian peninsula. The chronology of the species compared to that of the larger endemic species of ''Palaeoloxodon'' on Sicily, the tall '' Palaeoloxodon mnaidriensis'', is somewhat uncertain. It is generally thou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene Extinction Event
The Holocene extinction, or Anthropocene extinction, is the ongoing extinction event during the Holocene epoch. The extinctions span numerous families of bacteria, fungi, plants, and animals, including mammals, birds, reptiles, amphibians, fish, invertebrates, and affecting not just terrestrial species but also large sectors of marine life. With widespread degradation of biodiversity hotspots, such as coral reefs and rainforests, as well as other areas, the vast majority of these extinctions are thought to be undocumented, as the species are undiscovered at the time of their extinction, which goes unrecorded. The current rate of extinction of species is estimated at 100 to 1,000 times higher than natural background extinction rates, and is increasing. During the past 100–200 years, biodiversity loss and species extinction have accelerated, to the point that most conservation biologists now believe that humankind has either entered a period of mass extinction, or is on the cusp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quaternary Birds Of Europe
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today, although a third epoch, the Anthropocene, has been proposed but is not yet officially recognised by the ICS). The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. Research history In 1759 Giovanni Arduino proposed that the geological strata of northern Italy could be divided into four successive formations or "orders" ( it, quattro ordini). The term "quaternary" was introduced by Jules Desnoyer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene Birds
The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing a faunal interchange between the two reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cygnus (genus)
Cygnus is the Latin word for swan and may refer to: Astronomy * Cygnus (constellation), a northern constellation ** Cygnus A, a radio galaxy within the constellation ** Cygnus X (star complex), a star complex within the constellation ** Cygnus X-1, a binary system within the constellation ** Cygnus X-3, a binary system within the constellation Business & industry * Cygnus 20, a Canadian sailboat design * ''Cygnus'' (spacecraft), a space vehicle developed by Orbital Sciences Corporation and Thales Alenia Space * Cygnus Air or Gestair Cargo, a Spanish cargo airline * Cygnus Business Media, a U.S.-based business-to-business publishing company * Cygnus Solutions, a company that provided commercial support for free software and the original developer of Cygwin Other uses * ''Cygnus'' (genus), the genus of most swans * Cygnus (mythology) or Cycnus, a number of characters in Greek mythology * Cygnus X-1 (song series), a 1977–1978 two-part song series by Rush * Cygnus X (music ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birżebbuġa
Birżebbuġa (; sometimes shortened to B'Buġa) is a seaside town in the Southern Region of Malta, close to Marsaxlokk. It is approximately from the capital Valletta, and it has a population of 9,736 as of March 2014. The town is popular among Maltese holidaymakers, and is known for its sandy beach, Pretty Bay. The village is also notable for its important archaeological sites, especially Għar Dalam, Ta' Kaċċatura and Borġ in-Nadur. Etymology "Birżebbuġa" means "well of olives" in the Maltese language. Such linguistic evidence established early inhabitants were in the south of the island since the first millennium. The name also indicates climate and food. History Prehistory Near the village of Birżebbuġa is ''Għar Dalam'', meaning a dark cave. Għar Dalam Cave is a highly important site, as it was here that the earliest evidence of human presence on Malta was discovered. Artefacts date back to the Neolithic Period some 7,400 years ago. The display area consists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Għar Dalam
Għar Dalam ("Cave of Dalam" (a fifteenth century family name), ) is a 144 metre long phreatic tube and cave, or cul-de-sac, located in the outskirts of Birżebbuġa, Malta. The cave contains the bone remains of animals that were stranded and subsequently became extinct in Malta at the end of the Last Glacial Maximum. It has lent its name to the Għar Dalam phase in Maltese prehistory, and is viewed as one of Malta's most important national monuments. Pottery similar to that found in Stentinello was found at Għar Dalam, but lacking details such as stamp decorations. Dwarf elephant, hippopotamus, giant swan, deer and bear bone deposits found there are of different ages; the hippopotamuses became extinct about 10,000 years ago, whilst the deer species became extinct much later, about 4000 years ago during the Chalcolithic. It is also here that the earliest evidence of human settlement on Malta, some 7,400 years ago, was discovered. Recent history The cave was first investig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Competition (biology)
Competition is an interaction between organisms or species in which both require a resource that is in limited supply (such as food, water, or territory). Competition lowers the fitness of both organisms involved since the presence of one of the organisms always reduces the amount of the resource available to the other. In the study of community ecology, competition within and between members of a species is an important biological interaction. Competition is one of many interacting biotic and abiotic factors that affect community structure, species diversity, and population dynamics (shifts in a population over time). There are three major mechanisms of competition: interference, exploitation, and apparent competition (in order from most direct to least direct). Interference and exploitation competition can be classed as "real" forms of competition, while apparent competition is not, as organisms do not share a resource, but instead share a predator. Competition among membe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Predator
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the host) and parasitoidism (which always does, eventually). It is distinct from scavenging on dead prey, though many predators also scavenge; it overlaps with herbivory, as seed predators and destructive frugivores are predators. Predators may actively search for or pursue prey or wait for it, often concealed. When prey is detected, the predator assesses whether to attack it. This may involve ambush or pursuit predation, sometimes after stalking the prey. If the attack is successful, the predator kills the prey, removes any inedible parts like the shell or spines, and eats it. Predators are adapted and often highly specialized for hunting, with acute senses such as vision, hearing, or smell. Many predatory animals, both vertebrate and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Change (general Concept)
Climate variability includes all the variations in the climate that last longer than individual weather events, whereas the term climate change only refers to those variations that persist for a longer period of time, typically decades or more. ''Climate change'' may refer to any time in Earth's history, but the term is now commonly used to describe contemporary climate change. Since the Industrial Revolution, the climate has increasingly been affected by human activities. The climate system receives nearly all of its energy from the sun and radiates energy to outer space. The balance of incoming and outgoing energy and the passage of the energy through the climate system is Earth's energy budget. When the incoming energy is greater than the outgoing energy, Earth's energy budget is positive and the climate system is warming. If more energy goes out, the energy budget is negative and Earth experiences cooling. The energy moving through Earth's climate system finds expression ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human
Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, and language. Humans are highly social and tend to live in complex social structures composed of many cooperating and competing groups, from families and kinship networks to political states. Social interactions between humans have established a wide variety of values, social norms, and rituals, which bolster human society. Its intelligence and its desire to understand and influence the environment and to explain and manipulate phenomena have motivated humanity's development of science, philosophy, mythology, religion, and other fields of study. Although some scientists equate the term ''humans'' with all members of the genus ''Homo'', in common usage, it generally refers to ''Homo sapiens'', the only extant member. Anatomically moder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Kitchen Parker
William Kitchen Parker FRS FRMS (23 June 1823 – 3 July 1890) was a British physician, zoologist and comparative anatomist. From a humble beginning he became Hunterian Professor of Anatomy and Physiology in the College of Surgeons of England. He was elected a Fellow of the Royal Society in 1865, awarded the Royal Medal in 1866. From 1871–73 he was President of the Royal Microscopical Society, and in 1885 he received the Baly Medal of the Royal College of Physicians. Life Parker was born in the village of Dogsthorpe, near Peterborough in the County of Northamptonshire. His father, Thomas Parker, was a working farmer, living in a thatched house, built in 1635. Thomas was a Wesleyan of the old school: a Methodist-Churchman, God-fearing and courteous, farming his own land. He married the daughter of another farmer, Sarah Kitchen, whose name was also given to their son William. William Parker was the second son, and six other children in the family died in their infancy. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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