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White-bearded Helmetcrest
The white-bearded helmetcrest (''Oxypogon lindenii'') is a species of hummingbird in the "coquettes", tribe Lesbiini of subfamily Lesbiinae. It is endemic to northwestern Venezuela.HBW and BirdLife International (2020) ''Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world'' Version 5. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip [.xls zipped 1 MB] retrieved 27 May 2021 Taxonomy and systematics The white-bearded helmetcrest was formerly considered to be a subspecies of what was known as the bearded helmetcrest (''Oxypogon guerinii''). The white-bearded helmetcrest was promoted to species status when the bearded helmetcrest was split into four species based on a study of biometric and plumage data published in 2013. The nominate subspecies was renamed the green-bearded helmetcrest. The white-bearded helmetcrest is monotypic. Description The white-bearded helm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Parzudaki
Charles Parzudaki (7 May 1806 Chania – 30 December 1889 Nointel, Oise, Nointel, Oise) was an Ottoman-French ornithologist and List of natural history dealers, natural history dealer. Charles Parzudaki was awarded for his outstanding Taxidermy, taxidermic exhibits, which he exhibited at the ''Exposition des produits de l'industrie française, Exposition publique des produits de l'industrie française'', in 1839, 1844 and 1849. Around 1839 he began a natural goods trade at 2 rue Boulofrin Paris, which he later ran together with his stepson Émile Parzudaki, Émile until about 1864. To improve their exhibits, they had the support of artists such as Elie Maillard (1838–1887), who repainted the glass eyes of the bird mounts and the sculptor Jules Dalou (1838–1902), who replaced the usual stuffing materials with clay. Private collectors such as John Gould, Frédéric de Lafresnaye, Philip Lutley Sclater, George Loddiges, Thomas Campbell Eyton, Thomas Powys, 4th Baron Lilford a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Páramo
Páramo () may refer to a variety of alpine tundra ecosystems located in the Andes Mountain Range, South America. Some ecologists describe the páramo broadly as "all high, tropical, montane vegetation above the continuous timberline". A narrower term classifies the páramo according to its regional placement in the northern Andes of South America and adjacent southern Central America. The páramo is the ecosystem of the regions above the continuous forest line, yet below the permanent snowline. It is a "Neotropical high mountain biome with a vegetation composed mainly of giant rosette plants, shrubs and grasses". According to scientists, páramos may be "evolution, evolutionary hot spots", meaning that they are among the fastest evolving regions on Earth. Location The Northern Andean Páramo global ecoregion includes the Cordillera Central páramo (Ecuador, Peru), Santa Marta páramo (Colombia), Cordillera de Merida páramo (Venezuela) and Northern Andean páramo (Colombia, Ec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Venezuelan Andes
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a four-chambered heart, and a strong yet lightweight Bird skeleton, skeleton. Birds live worldwide and range in size from the bee hummingbird to the common ostrich. There are over 11,000 living species and they are split into 44 Order (biology), orders. More than half are passerine or "perching" birds. Birds have Bird wing, wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the Flightless bird, loss of flight in some birds, including ratites, penguins, and diverse endemism, endemic island species. The digestive and respiratory systems of birds are also uniquely a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overgrazing
Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves. It can also be caused by immobile, travel restricted populations of native or non-native wild animals. Overgrazing reduces the usefulness, productivity and biodiversity of the land and is one cause of desertification and erosion. Overgrazing is also seen as a cause of the spread of invasive species of non-native plants and of weeds. Degrading land, emissions from animal agriculture and reducing the biomass in a ecosystem contribute directly to climate change between grazing events. Successful planned grazing strategies have been in support of the American bison of the Great Plains, or migratory wildebeest of the African savannas, or by holistic planned grazing. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status of the natural world and the measures needed to safeguard it. It is involved in data gathering and Data analysis, analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through buildin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawking (birds)
Hawking is a feeding strategy in birds involving catching flying insects in the air. The term usually refers to a technique of sallying out from a perch to snatch an insect and then returning to the same or a different perch, though it also applies to birds that spend almost their entire lives on the wing. This technique is called "flycatching" and some birds known for it are several Family (biology), families of "flycatchers": Old World flycatchers, monarch flycatchers, and tyrant flycatchers; however, some species known as "flycatchers" use other foraging methods, such as the grey tit-flycatcher. Other birds, such as Swift (bird), swifts, swallows, and nightjars, also take insects on the wing in continuous aerial feeding. The term "hawking" comes from the similarity of this behavior to the way Hawk, hawks take prey in flight, although, whereas Bird of prey, raptors may catch prey with their feet, hawking is the behavior of catching insects in the bill. Many birds have a combine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castilleja
''Castilleja'', commonly known as paintbrush, Indian paintbrush, or prairie-fire, is a genus of about 200 species of Annual plant, annual and Perennial plant, perennial mostly herbaceous plants native to the west of the Americas from Alaska south to the Andes, northern Asia, and one species as far west as the Kola Peninsula in northwestern Russia. These plants are classified in the broomrape family Orobanchaceae (following major rearrangements of the order Lamiales starting around 2001; sources which do not follow these reclassifications may place them in the Scrophulariaceae). They are hemiparasitic on the roots of Graminoid, grasses and forbs. The genus was named after Spanish botanist Domingo Castillejo. Taxonomy ''Castilleja'' was scientifically described by Carl Linnaeus the Younger using a partial description by José Celestino Bruno Mutis in 1782. The type species was ''Castilleja fissifolia'' from Columbia. The genus as a whole has never been renamed, however five others ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Espeletia Schultzii
''Espeletia schultzii'' is a high altitude shrub endemic to the Andes of Venezuela. ''Espeletia schultzii'' his a giant rosette plant, with a large above ground stem (caulescent). It exhibits nyctinasty In plant biology, nyctinasty is the circadian rhythm-based nastic movement of higher plants in response to the onset of darkness, or a plant "sleeping". Nyctinastic movements are associated with diurnal light and temperature changes and con ..., folding up its leaves at night to prevent freezing of young leaves in the center of the rosette. References Millerieae Flora of Southern America Páramo flora Endemic flora of Venezuela Taxa named by Hugh Algernon Weddell Plants described in 1856 {{Asteroideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polylepis
''Polylepis'' is a genus comprising 28 recognised shrub and tree species, that are endemic to the mid- and high-elevation regions of the tropical Andes, up to above sea level. It is distributed from Venezuela to Patagonia. In Peru, plants in the genus are known as ''queñual'', ''queuña'', or ''queñoa''; in Bolivia, as ''kewiña''; in Ecuador, as ''yagual''; and in Argentina, ''tabaquillo''. This group is unique in the rose family in that it is predominantly wind-pollinated. They are usually gnarled in shape, but in certain areas some trees are 15–20 m tall and have 2 m-thick trunks. The foliage is evergreen, with dense small leaves, and often having large amounts of dead twigs hanging down from the underside of the canopy. The name ''Polylepis'' is, in fact, derived from the Greek words poly (many) plus letis (layers), referring to the shredding, multi-layered bark that is common to all species of the genus. The bark is thick and rough and densely layered for protection ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Espeletia
''Espeletia'', commonly known as 'frailejones' ("big monks"), is a genus of perennial subshrubs, in the family Asteraceae. The genus, which is native mainly to Colombia, Venezuela and Ecuador, was first formally described in 1808. The genus was named after the viceroy of New Granada, José Manuel de Ezpeleta. The plants live at high altitude in páramo ecosystems. The trunk is thick, with succulent hairy leaves disposed in a dense spiral pattern. Marcescent leaves help protect the plants from cold. The flowers are usually yellow, similar to daisies. Some members of the genus exhibit a caulirosulate growth habit. The frailejón plant is endangered due to destruction of the páramo for agricultural purposes, especially potato crops. This activity continues, despite the Colombian government declaring it illegal. Since about 2010 the plants have also come under attack by beetle larvae, a moth and a fungus, some new to science but suspected to be related to climate change which al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trujillo (state)
Trujillo State (, ) is one of the 23 States of Venezuela, states of Venezuela. Its capital is Trujillo, Trujillo, Trujillo and the largest city is Valera. The state is divided into 20 municipalities and 93 parishes. Trujillo State covers a total surface area of and, has a 2011 census population of 686,367. History Spanish colonization The city of Trujillo was founded in 1557 by the conquistador and captain Diego García de Paredes, in honor of his homonymous and native town located in Extremadura, Spain. Hostility from the Kuikas Indians and natural calamities forced changes in settlement, but on 27 October 1570 the town was finally located under the temporary name of Trujillo de Nuestra Señora de la Paz. It is also known as the Portable City because of its many foundations due to the fierce resistance of the indigenous people who inhabited that territory when defending their lands. On 31 December 1676, Maracaibo (separated from the province of Venezuela) and Mérida-La Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
