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Blackish Antbird
The blackish antbird (''Cercomacroides nigrescens'') is a species of passerine bird in the family Thamnophilidae. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Suriname. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and heavily degraded former forest. The blackish antbird was described by the German ornithologists Jean Cabanis and Ferdinand Heine in 1860 and given the binomial name ''Percnostola nigrescens''. The specific epithet is from the Latin ''nigrescens'' "blackish" (from ''nigrescere '' "to become black"). The antbird was subsequently included in the genus ''Cercomacra'' but a molecular phylogenetic study published in 2014 found that ''Cercomacra'' was polyphyletic. The genus was split to create two monophyletic genera and six species including the blackish antbird were moved to the newly erected genus ''Cercomacroides ''Cercomacroides'' is a genus of passerine birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apiacás
Apiacás is the northernmost municipality in the Brazilian state of Mato Grosso. It is the only city in a territorial "edge" of Mato Grosso that "pierce" the boundary between Amazonas and Pará. The municipality contains part of the Juruena National Park Juruena National Park ( pt, Parque Nacional do Juruena), declared in 2006, is the third largest national park of Brazil. It is located along the Juruena River, in the north of Mato Grosso state and the south of Amazonas state. It forms part o ..., one of the largest conservation units in Brazil. References Municipalities in Mato Grosso Populated places established in 2001 {{matoGrosso-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montane Forest
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial factor in shaping plant community, biodiversity, metabolic processes and ecosystem dynamics for montane ecosystems. Dense montane forests are common at moderate elevations, due to moderate temperatures and high rainfall. At higher elevations, the climate is harsher, with lower temperatures and higher winds, preventing the growth of trees and causing the plant community to transition to montane grasslands, shrublands or alpine tundra. Due to the unique climate conditions of montane ecosystems, they contain increased numbers of endemic species. Montane ecosystems also exhibit variation in ecosystem services, which include carbon storage and water supply. Life zones As elevation increases, the climate becomes cooler, due to a decrease in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Guianas
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have 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 loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. Bir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Amazon Basin
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have 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 loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. Birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emilie Snethlage
Maria Emilie Snethlage (April 13, 1868 – November 25, 1929) was a German-born Brazilian naturalist and ornithologist who worked on the bird fauna of the Amazon. Snethlage collected in Brazil from 1905 until her death. She was the director of the Museu Paraense Emílio Goeldi from 1914 to 1922. Several species of birds were described by her. Early life Maria Emilie Snethlage was born in Kraatz (now part of Gransee) in the Province of Brandenburg, Prussia, and educated privately by her father Rev. Emil Snethlage, a Lutheran pastor, after the death of her mother. In 1889 she passed an examination that allowed her to teach young women at secondary school. At the age of 21 she studied French at Neuchatel and worked for a few years as a tutor in England, Ireland and Germany. She became interested in nature at an early age through the book ''Entdeckungsreisen in Feld und Flur'' by Hermann Wagner and she collected plants for a herbarium apart from sending notes on birds to Rudolf Bla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August Von Pelzeln
August von Pelzeln (10 May 1825, Prague – 2 September 1891 in Oberdöbling) was an Austrian ornithologist. He was a grandson to novelist Karoline Pichler (1769-1843). Österreichisches Biographisches Lexikon 1815–1950 (ÖBL). Band 7. Verlag der Österreichischen Akademie der Wissenschaften, Wien 1978, , S. 401 f He studied at the , later working as an assistant under |
John Todd Zimmer
John Todd Zimmer (February 28, 1889 in Bridgeport, Ohio – January 6, 1957 in White Plains, New York) was a leading American ornithologist. A graduate of University of Nebraska-Lincoln, he took an early interest in both entomology and ornithology. From 1913 he worked as an agricultural adviser in the Philippines and later New Guinea, during which time he made important collections of bird specimens. After his return to America he joined the staff of the Field Museum of Natural History, in which role he compiled a ''Catalog of the Ayer Ornithological Library'', and participated in expeditions to Africa and Peru. In 1930 Frank Chapman recruited him as Associate Curator of Birds at the American Museum of Natural History in New York, where he remained for the rest of his life. He made systematic revisions of the taxonomy of the birds of Peru and their relatives in other parts of South America, and in his later years combined this with studies of New World flycatchers, preparing the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cercomacroides
''Cercomacroides'' is a genus of passerine birds in the family Thamnophilidae. The genus contains six species: * Willis's antbird (''Cercomacroides laeta'') * Parker's antbird (''Cercomacroides parkeri'') * Blackish antbird (''Cercomacroides nigrescens'') * Riparian antbird (''Cercomacroides fuscicauda'') * Dusky antbird (''Cercomacroides tyrannina'') * Black antbird (''Cercomacroides serva'') These species were formerly placed in the genus '' Cercomacra''. A molecular phylogenetic study published in 2014 found that ''Cercomacra'', as then defined, was polyphyletic. The genus was split to create monophyletic genera and six species were moved to the newly erected genus ''Cercomacroides'' with the dusky antbird as the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyletic
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic groups are typically characterised by shared derived characteristics ( synapomorphies), which distinguish organisms in the clade from other organisms. An equivalent term is holophyly. The word "mono-phyly" means "one-tribe" in Greek. Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic group'' consists of all of the descendants of a common ancestor minus one or more monophyletic groups. A '' polyphyletic group'' is characterized by convergent features or habits of scientific interest (for example, night-active primates, fruit trees, aquatic insects). The features by which a polyphyletic group is differentiated from others are not inherited from a common ancestor. These definitions have tak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphyletic
A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly .. ource for pronunciation./ref> It is contrasted with monophyly and paraphyly. For example, the biological characteristic of warm-bloodedness evolved separately in the ancestors of mammals and the ancestors of birds; "warm-blooded animals" is therefore a polyphyletic grouping. Other examples of polyphyletic groups are algae, C4 photosynthetic plants, and edentates. Many taxonomists aim to avoid homoplasies in grouping taxa together, with a goal to identify and eliminate groups that are found to be polyphyletic. This is often the stimulus for major revisions of the classification schemes. Researchers concerned more with ecology than with systema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cercomacra
''Cercomacra'' is a genus of passerine birds in the family Thamnophilidae. The genus was erected by the English zoologist Philip Sclater in 1858. The type species was subsequently designated as the Rio de Janeiro antbird. The genus contains seven species: * Manu antbird (''Cercomacra manu'') * Rio de Janeiro antbird (''Cercomacra brasiliana'') * Grey antbird (''Cercomacra cinerascens'') * Mato Grosso antbird (''Cercomacra melanaria'') * Bananal antbird (''Cercomacra ferdinandi'') * Jet antbird (''Cercomacra nigricans'') * Rio Branco antbird (''Cercomacra carbonaria'') The genus formerly included additional species but when a molecular phylogenetic study published in 2014 found that ''Cercomacra'' was polyphyletic the genus was split to create two monophyletic genera and six species were moved to the newly erected genus ''Cercomacroides ''Cercomacroides'' is a genus of passerine birds in the family Thamnophilidae. The genus contains six species: * Willis's antbird (''C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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