The genera of Lejeuneaceae (Marchantiophyta) of tropical America – an update

2020 ◽  
Vol 150 ◽  
pp. 81-96
Author(s):  
S. Robbert Gradstein
Keyword(s):  
Tropical America

Soil Management in Tropical America

1976 ◽  
Vol 40 (5) ◽  
pp. iv-iv
Author(s):  
Henry D. Foth
Keyword(s):  
Soil Management ◽  
Tropical America

El Papel de Humbodt en el Origen y Desarrollo de la Geografia Moderna

GEOgraphia ◽  
2009 ◽  
Vol 4 (8) ◽  
pp. 7
Author(s):  
Héctor F. Rucinque e Wellington Jiménez
Keyword(s):  
Key Words ◽  
Founding Father ◽  
Analytical Methodology ◽  
Alexander Von Humboldt ◽  
Scientific Exploration ◽  
History Of Geography ◽  
Tropical America ◽  
History Of ◽  
Scholarly Production ◽  
Modern Geography

RESUMO Por lo general, los historiadores de la ciencia reconocen la importaocia de Alexander von Humboldt en el desarrollo de la geografía moderna, si bien tal contribución especializada no es claramente desglosada de su multifacética producción científica. Con ocasión del bicentenario de su viaje a la América tropical, el papel de Humboldt en la formulación de las bases de una metodología analítica para la investigación geográfica, y su monumental trabajo sustantivo, lo mismo que su penetrante permanencia e inspiración en la tradición geográfica, deben acreditarse como justificación amplia y suficiente para su título de padre fundador de la geografía científica. Epígrafes: Humboldt, historia de la geografía, geografía moderna, metodología geográfica, exploración científica.ABSTRACT Alexander von Humboldt’s contributions to the development of modern geography are generally ackoowledged by historians of science, though not always stated precisely out of his many-sided scholarly production. On the occasion of the Bicentennial of his voyage to tropical America, Humboldt’s role in setting forth the foundation of an analytical methodology for geography as well as for his monumental substantive work, along with his pervasive and inspiring perrnanence in the geographical tradition, must be recognized as ample justification tu his title as founding father of scientific geography. Key words: Humboldt, history of geography, modern geography, geagraphical methodology, scientific exploration.

Western Tethys origin, tropical Asia and tropical America disjunction in Berchemia and reinstatement of Phyllogeiton (Rhamneae, Rhamnaceae)

Taxon ◽  
2021 ◽  
Author(s):  
Xianhan Huang ◽  
Tao Deng ◽  
Shaotian Chen ◽  
Jacob B. Landis ◽  
Nan Lin ◽  
...  
Keyword(s):  
Tropical Asia ◽  
Western Tethys ◽  
Tropical America

THE OCCURRENCE AND DISTRIBUTION OF ACRASIEAE IN FORESTS OF SUBTROPICAL AND TROPICAL AMERICA

1968 ◽  
Vol 55 (4) ◽  
pp. 504-513 ◽  
Author(s):  
James C. Cavender ◽  
Kenneth B. Raper
Keyword(s):  
Tropical America

Tropical Pasture Technology for Marginal Lands of Tropical America

1986 ◽  
Vol 15 (1) ◽  
pp. 2-9 ◽  
Author(s):  
José M. Toledo ◽  
Gustavo A. Nores
Keyword(s):  
Tropical Pasture ◽  
Marginal Lands ◽  
Tropical America

scholarly journals The Neogene tropical America fish assemblage and the paleobiogeography of the Caribbean region

2011 ◽  
Vol 130 (2) ◽  
pp. 217-240 ◽  
Author(s):  
Orangel Antonio Aguilera Socorro ◽  
Maria Inês Feijó Ramos ◽  
Eduardo Tavares Paes ◽  
Sue Anne Regina Ferreira Costa ◽  
Marcelo R. Sánchez-Villagra
Keyword(s):  
Fish Assemblage ◽  
Caribbean Region ◽  
Tropical America ◽  
The Caribbean

Revision of Philodendron Subgenus Pteromischum (Araceae) for Pacific and Caribbean Tropical America

1996 ◽  
Vol 47 ◽  
pp. 1 ◽  
Author(s):  
Michael H. Grayum
Keyword(s):  
Tropical America

Distribution, history, and taxonomy of the Thais clade (Gastropoda: Muricidae) in the Neogene of tropical America

2001 ◽  
Vol 75 (3) ◽  
pp. 697-705 ◽  
Author(s):  
Geerat J. Vermeij
Keyword(s):  
New Species ◽  
South Atlantic ◽  
Eastern Pacific ◽  
Caribbean Region ◽  
Large Species ◽  
The South ◽  
Western Atlantic ◽  
Extinction Rates ◽  
Tropical America ◽  
The Caribbean

The earliest known members of the Thais clade of rapanine muricid neogastropods comprise four species from the Cantaure Formation (early Miocene: Burdigalian) of Venezuela; three of these species are new. Neorapana rotundata Gibson-Smith et al., 1997, is most closely related to the Recent Pacific Mexican N. tuberculata (Sowerby, 1835), and represents the only known Atlantic occurrence of the genus. Thais brevicula new species is closest to T. callaoensis (Gray, 1828) from the Recent of northern Peru and the Galápagos. A review of the genus Thais indicates that the typical members of this group occur in the South Atlantic, West Africa, and eastern Pacific, but not in the Recent fauna of the southern Caribbean. Stramonita bifida new species is a large species related to the Recent S. haemastoma floridana (Conrad, 1837), which occurs throughout the Caribbean. A review of American species of Stramonita indicates that the taxon S. biserialis (de Blainville, 1832) from the Recent fauna of the eastern Pacific, and the taxon S. h. haemastoma (Linnaeus, 1767), may each be composed of more than one species despite the teleplanic dispersal of their larvae. Stramonita semiplicata new species is closely related to the Recent S. bicarinata (de Blainville, 1832) from the South Atlantic, and represents a lineage that occurred in the Caribbean region until at least the late Miocene. It may have given rise to the eastern Pacific genus Acanthais. The higher diversity and greater antipredatory specialization of eastern Pacific as compared to western Atlantic members of the Thais clade may have resulted from higher post-Miocene rates of speciation and lower extinction rates in the eastern Pacific.

scholarly journals Testing historical explanations for gradients in species richness in heliconiine butterflies of tropical America

2012 ◽  
Vol 105 (3) ◽  
pp. 479-497 ◽  
Author(s):  
NEIL ROSSER ◽  
ALBERT B. PHILLIMORE ◽  
BLANCA HUERTAS ◽  
KEITH R. WILLMOTT ◽  
JAMES MALLET
Keyword(s):  
Species Richness ◽  
Tropical America

Bixa orellana (annatto).

2021 ◽  
Author(s):  
Eduardo Ventosa
Keyword(s):  
Main Product ◽  
Organic Dye ◽  
Maximum Diameter ◽  
Agricultural Crops ◽  
Bixa Orellana ◽  
Breast Height ◽  
Tropical America ◽  
Medicinal Properties ◽  
Strong Winds ◽  
The Tropics

Abstract B. orellana is a small, bushy tree 2-8 m tall, with maximum diameter at breast height 10-30 cm (Hensleigh and Holaway, 1988). The main product is a non-toxic organic dye obtained from the fruits, known as annatto or bixin. This dye is used commercially in foods, cosmetics, textiles, polish, wax and stains; locally it is used as an insect repellent and as a body paint. The bark exudes a gum and contains fibres which may be twisted into a cordage; the seeds and leaves have medicinal properties (Lemmens and Wulijarni-Soetjipto, 1991; Anon, 1986). B. orellana originated in tropical America (Hensleigh and Holaway 1988) and is now widely planted and naturalized in the tropics (Quisumbing 1951; Backer and Brink, 1963; Quimbo, 1980; Lemmens and Wulijarni-Soetjipto, 1991). It is a light-demanding species and grows well in warm, humid climates which are free from frost and strong winds (Lemmens and Wulijarni-Soetjipto, 1991). This species requires uniformly distributed rainfall, unless the land is irrigated (Bayot, 1986). B. orellana is often intercropped with agricultural crops, and is also grown as an ornamental bushy tree. B. orellana may be propagated from seeds. The pods are harvested once they begin to show a tinge of red or when they begin to split (Hensleigh and Holaway, 1988). Average annual yields of dry seed have been reported as 4.5-5 kg/tree or about 350-700 kg/ha (Brown, 1957; Hensleigh and Holaway, 1988). Seeds are soaked in water or scarified in order to enhance germination, and may be planted in nursery beds or directly in the field. However, propagation from cuttings is often more favourable, as cuttings from high-yielding cultivars yields may bear fruit within two years (Lemmens and Wulijarni-Soetjipto, 1991). This species can also be propagated by air layering. B. orellana grows well without fertilizers, provided the young plants are weeded.

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