U/Pb detrital zircon provenance from late cretaceous metamorphic units of the Guajira Peninsula, Colombia: Tectonic implications on the collision between the Caribbean arc and the South American margin

2010 ◽  
Vol 29 (4) ◽  
pp. 805-816 ◽  
Author(s):  
M. Weber ◽  
A. Cardona ◽  
V. Valencia ◽  
A. García-Casco ◽  
M. Tobón ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Detrital Zircon ◽  
South American ◽  
The South ◽  
Tectonic Implications ◽  
The Caribbean

scholarly journals NOMEUS GRONOVII (GMELIN) (PISCES: NOMEIDAE) EN EL CARIBE COLOMBIANO: PRIMER REGISTRO PARA LA COSTA NOROCCEDENTAL DE AMERICA DEL SUR

2016 ◽  
Vol 23 ◽  
Author(s):  
Arturo Acero P. ◽  
Alberto Rodríguez Ramírez ◽  
Jaime Garzón Ferreira
Keyword(s):  
Caribbean Sea ◽  
South American ◽  
The South ◽  
The Caribbean ◽  
América Del Sur

Three specimens of the man-of-war fish, Nomeus gronovii, from the Santa Marta and Cartagena areas (Colombian Caribbean) are presented as the first records of the species from the South American coasts over the Caribbean Sea.

scholarly journals Peaks and pitfalls of multilevel policy coordination: The South American Conference on Migration

2021 ◽  
Vol 18 (4) ◽  
pp. 487-496
Author(s):  
Victoria Finn ◽  
Cristián Doña-Reveco
Keyword(s):  
Regional Integration ◽  
National Level ◽  
Migration Policy ◽  
Policy Coordination ◽  
Central Component ◽  
South American ◽  
The South ◽  
National Legislation ◽  
Governance Strategies ◽  
The Caribbean

Regional Consultative Processes (RCPs) have become a central component of migration governance; these are the loci of interstate migration policy discussions. Currently, 15 RCPs meet worldwide in every region, except the Caribbean, to form non-binding agreements and to coordinate migration policy approaches. Building on previous reports, migration governance literature, and existent thematic analyses specific to the region, we evaluate RCPs’ multilevel migration policy coordination by comparing national laws to regional topics and accords. We compare two decades of national legislation in all 12 South American countries to regional discussion at the South American Conference on Migration (SACM) since its first annual meeting in 2000. We find synergies and discrepancies between translating regional migration governance strategies from the RCP into national-level migration management. The SACM has reinforced the member states’ focus on regional integration and provided a space for dialogue to agree on approaches and best practices. Yet, countries have not uniformly incorporated these into national legislation. Our multilevel analysis reveals the complexities that RCPs face in overcoming regional-national discrepancies in immigration policy coordination.

Biochemical studies on the relationships of the Gastric-brooding Frogs, genus Rheobatrachus

1987 ◽  
Vol 8 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Mark N. Hutchinson ◽  
Linda R. Maxson
Keyword(s):  
Serum Albumin ◽  
South African ◽  
Late Cretaceous ◽  
Complement Fixation ◽  
South American ◽  
The South ◽  
Aquatic Life ◽  
Biochemical Studies ◽  
Rare And Endangered ◽  
Endangered Status

AbstractTwo species of gastric-brooding frogs, Rheobatrachus silus and R. vitellinus, currently constitute the subfamily Rheobatrachinae of the Australian leptodactyloid family Myobatrachidae. The relationships of Rheobatrachus to other myobatrachids have remained obscure due to the specializations for aquatic life and unique gastric-brooding behavior of Rheobatrachus and to the rare and endangered status of R. silus, until recently the only known species. An antiserum to the serum albumin of R. vitellinus was used in micro-complement fixation analyses comparing R. vitellinus to R. silus, and to representatives of most of the myobatrachid genera as well as to select representatives of the South American and South African leptodactyloid fauna. The two species of Rheobatrachus are each others closest relative and no other lineage is distinctly associated with these two species. Albumin comparisons involving other leptodactyloids show that Rheobatrachus is part of the Australian fauna, but as all of the major lineages appear to have arisen in the late Cretaceous, no single sister lineage to Rheobatrachus can be unambiguously identified.

scholarly journals Identification and tectonic implications of a tear in the South American plate at the southern end of the Lesser Antilles

2008 ◽  
Vol 9 (11) ◽  
pp. n/a-n/a ◽  
Author(s):  
S. A. Clark ◽  
M. Sobiesiak ◽  
C. A. Zelt ◽  
M. B. Magnani ◽  
M. S. Miller ◽  
...  
Keyword(s):  
Lesser Antilles ◽  
South American ◽  
The South ◽  
South American Plate ◽  
Tectonic Implications

scholarly journals LOS PORCELANIDOS (Crustacea: Anomura: Porcellanidae) DE LA REGION DE SANTA MARTA, COLOMBIA

2016 ◽  
Vol 9 ◽  
Author(s):  
Bernd Werding
Keyword(s):  
Coastal Area ◽  
South American ◽  
The South ◽  
Continental Coast ◽  
The Caribbean ◽  
First Time

Collections o£ porcellanid crabs were made along a coastal area of about 50 km in length around Santa Marta, Colombia. As a result 28 species from eight genera are now known to occur in the working area; 23 of them are new for Colombia and 11 new for the South American continental coast. Two species seem previously unreported, P. brasiliensis is the first species of the genus Pisidia found in Caribbean waters, and P. tonsorius is reported for the first time from the Atlantic. Keys are provided for the identification of the genera and species included herein. With the present study the total of porcellanid species known from the Caribbean rises from 31 to 3 5.

Taxonomy and distribution of Gaultheria in the Caribbean

1976 ◽  
Vol 54 (21) ◽  
pp. 2465-2472 ◽  
Author(s):  
R. E. Hersey ◽  
S. P. Vander Kloet
Keyword(s):  
South America ◽  
Single Species ◽  
Lesser Antilles ◽  
Greater Antilles ◽  
Mexican Origin ◽  
Herbarium Specimens ◽  
South American ◽  
The South ◽  
The Caribbean ◽  
Living Material

Two species of Gaultheria have been reported from the Caribbean: G. domingensis is said to occur on the Greater Antillean island of Hispaniola and G. sphagnicola, for which the specific names of G. buxifolia and G. anastomosans (both species occurring in South America) have been listed in synonymy, is said to occur on the Lesser Antillean islands of Martinique and Guadeloupe. A close examination of living material from Martinique and of herbarium specimens from Martinique, South America. Hispaniola, and Mexico reveals the following: (1) the Martinique and Guadeloupe group is specifically distinct from the South American G. buxifolia and G. anastomosans groups; (2) the Lesser Antilles group and the Greater Antilles group should be placed in a single species with the name of G. domingensis; and (3) there is evidence for a possible Mexican origin for this one Caribbean species.

scholarly journals The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach

2000 ◽  
Vol 171 (6) ◽  
pp. 657-664 ◽  
Author(s):  
Zulma Gasparini ◽  
Patrick Vignaud ◽  
Guillermo Chong
Keyword(s):  
Intraspecific Variability ◽  
South American ◽  
The South ◽  
History Of ◽  
The Caribbean

Abstract The thalattosuchian fossils from the Jurassic of Chile are revised. Some specimens, dating from the Lower Lias (Sinemurian), are the oldest known thalattosuchians, but are too fragmentary to establish a precise taxonomic placement. New specimen related to the genus Metriorhynchus is described from the lower Bajocian. It is the oldest representative of the genus and fills an important gap in our knowledge of the paleogeographic history of this group. Other new cranial fragments, related to the Callovian species Metriorhynchus casamiquelai, are described and this species is revised in the light of new studies on the intraspecific variability in extant crocodilians. Up until now, the known distribution of Liassic Thalattosuchia suggested a circumpacific distribution with minimally episodic passages through the Caribbean Corridor. Nevertheless, the close affinities between the South American and the European Metriorhynchidae from the Callovian to the Tithonian suggest the possibility that more and more frequent communications were made via the Caribbean Corridor. The new data corroborate the hypothesis formulated from the invertebrate faunas.

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