SPATIOTEMPORAL VARIABILITY OF PHOTOSYNTHETIC SENSITIVITY TO WATER AND RADIATION IN SOUTH AMERICAN CONTINENT

2019 ◽  
Vol 75 (2) ◽  
pp. I_1117-I_1122
Author(s):  
Shintaro FUJIMORI ◽  
Hyungjun KIM
Keyword(s):  
Spatiotemporal Variability ◽  
South American ◽  
American Continent ◽  
South American Continent

Features of Integration and Metaintegration in American Region

2019 ◽  
pp. 58-64
Keyword(s):  
Integration Method ◽  
South American ◽  
Legal Systems ◽  
Policy Integration ◽  
American Continent ◽  
Member States ◽  
The Creation ◽  
South American Continent ◽  
Andean Community ◽  
American Region

The analysis of integration of the legal systems of states in the American region is held. In the Southern subregion, a combination of integration and disintegration in cooperation of states led to the creation of two integration entities – MERCOSUR and the Andean Community (AC), in the Northern subregion – NAFTA. The author concludes that the convergence on the American continent, especially using the integration method, helped to implement a special scenario in the southern part of this continent – the meta-integration scenario, with the creation of the Union of South American Nations, uniting the Andean Community and MERCOSUR – something resembling a European one, but at the same time different from it. UNASUR is an effective mechanism for bringing together and integrating the states of the South American continent. Within this Union with notable leadership of Brazil and Argentina the first steps in the direction of the foreign policy integration of the member states are traced. In terms of economic integration, the Union uses the achievements of the AC and MERCOSUR, unifying the legal regulators in the economic sphere and bringing rapprochement to the legal systems of the member states.

scholarly journals Wild Life Preservation in the British West Indies, British Honduras and British Guiana

Oryx ◽  
1958 ◽  
Vol 4 (5) ◽  
pp. 332-334
Keyword(s):  
Western Hemisphere ◽  
South American ◽  
British West Indies ◽  
American Continent ◽  
British Guiana ◽  
British Honduras ◽  
Nature Preservation ◽  
The One ◽  
South American Continent ◽  
Wild Life

Problems of nature preservation in British territories of central America may be clearly divided between continental countries, British Honduras and British Guiana on the one hand, and the islands on the other; although the fauna of Trinidad and Tobago has much in common with that of the South American continent. The islands of the Greater and Lesser Antilles have been separated long enough from the mainland and from each other, for them to have developed their own plants and animals. Common to continental and island countries, however, are the migratory shore birds of the western hemisphere.

scholarly journals Multiple incursion pathways for Helicoverpa armigera in Brazil show its genetic diversity spreading in a connected world

2019 ◽  
Author(s):  
Jonas A. Arnemann ◽  
Stephen H. Roxburgh ◽  
Tom Walsh ◽  
Jerson V.C. Guedes ◽  
Karl H.J. Gordon ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Gene Flow ◽  
South America ◽  
New World ◽  
Flow Patterns ◽  
South American ◽  
Southern Brazil ◽  
American Continent ◽  
Central Brazil ◽  
South American Continent

AbstractThe Old World cotton bollworm Helicoverpa armigera was first detected in Brazil with subsequent reports from Paraguay, Argentina, Bolivia, and Uruguay. This pattern suggests that the H. armigera spread across the South American continent following incursions into northern/central Brazil, however, this hypothesis has not been tested. Here we compare northern and central Brazilian H. armigera mtDNA COI haplotypes with those from southern Brazil, Uruguay, Argentina, and Paraguay. We infer spatial genetic and gene flow patterns of this dispersive pest in the agricultural landscape of South America. We show that the spatial distribution of H. armigera mtDNA haplotypes and its inferred gene flow patterns in the southwestern region of South America exhibited signatures inconsistent with a single incursion hypothesis. Simulations on spatial distribution patterns show that the detection of rare and/or the absence of dominant mtDNA haplotypes in southern H. armigera populations are inconsistent with genetic signatures observed in northern and central Brazil. Incursions of H. armigera into the New World are therefore likely to have involved independent events in northern/central Brazil, and southern Brazil/Uruguay-Argentina-Paraguay. This study demonstrates the significant biosecurity challenges facing the South American continent, and highlights alternate pathways for introductions of alien species into the New World.

scholarly journals Multiple incursion pathways for Helicoverpa armigera in Brazil show its genetic diversity spreading in a connected world

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jonas Andre Arnemann ◽  
Stephen Roxburgh ◽  
Tom Walsh ◽  
Jerson Guedes ◽  
Karl Gordon ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Gene Flow ◽  
South America ◽  
New World ◽  
Flow Patterns ◽  
South American ◽  
Southern Brazil ◽  
American Continent ◽  
Central Brazil ◽  
South American Continent

AbstractThe Old World cotton bollworm Helicoverpa armigera was first detected in Brazil with subsequent reports from Paraguay, Argentina, Bolivia, and Uruguay. This pattern suggests that the H. armigera spread across the South American continent following incursions into northern/central Brazil, however, this hypothesis has not been tested. Here we compare northern and central Brazilian H. armigera mtDNA COI haplotypes with those from southern Brazil, Uruguay, Argentina, and Paraguay. We infer spatial genetic and gene flow patterns of this dispersive pest in the agricultural landscape of South America. We show that the spatial distribution of H. armigera mtDNA haplotypes and its inferred gene flow patterns in the southwestern region of South America exhibited signatures inconsistent with a single incursion hypothesis. Simulations on spatial distribution patterns show that the detection of rare and/or the absence of dominant mtDNA haplotypes in southern H. armigera populations are inconsistent with genetic signatures observed in northern and central Brazil. Incursions of H. armigera into the New World are therefore likely to have involved independent events in northern/central Brazil, and southern Brazil/Uruguay-Argentina-Paraguay. This study demonstrates the significant biosecurity challenges facing the South American continent, and highlights alternate pathways for introductions of alien species into the New World.

Remarks on the botany of the southern cold temperate zone

1960 ◽  
Vol 152 (949) ◽  
pp. 500-507 ◽  
Keyword(s):  
Floristic Composition ◽  
Temperate Zone ◽  
South American ◽  
Boreal Zone ◽  
American Continent ◽  
The South ◽  
Plant Life ◽  
South American Continent

The plant life of the southern cold temperate zone differs widely from that of the northern cold temperate zone not only in its floristic composition but also in its physiognomic types of vegetation. The latter difference is partly due to the fact that the austral zone concerned is cold temperate in a sense rather different from the corresponding boreal zone. Contrary to the great continents dominating the boreal cold temperate zone, the austral cold temperate zone consists mostly of a great ocean containing only a narrow extension of the South American continent and various islands. Owing to this difference the climates of the austral cold temperate zone are generally much more oceanic than those of the boreal cold temperate zone. Nowhere in the boreal zone do we find a climate with such small

South American-Archaic Relations: Additional Comment

1951 ◽  
Vol 16 (4) ◽  
pp. 354-355
Author(s):  
Gordon R. Willey
Keyword(s):  
Focused Attention ◽  
South American ◽  
Cultural Relations ◽  
American Continent ◽  
The North ◽  
Additional Comment ◽  
Caribbean Area ◽  
The Caribbean ◽  
Cultural Connections ◽  
South American Continent

In a recent note Baerreis (1950) has given critical amplification to the question of possible cultural relations between the southeastern United States Archaic and the archaeologically known culture, or cultures, of the lower Parana River, Argentina. A paper of my own (Willey, 1949), on which Baerreis centers his discussion, focused attention on the Caribbean area and the north of the South American continent, giving only brief mention to interesting southeastern resemblances which may be found along the Parana and in the Sambaquis of southern Brazil. I agree that Baerreis has strengthened the case for cultural connections over and beyond the casual comments which I or others have offered.

Darwin's Early Notes on Coral Reef Formation

1984 ◽  
Vol 3 (2) ◽  
pp. 160-163 ◽  
Author(s):  
Frederick Burkhardt
Keyword(s):  
Coral Reef ◽  
South America ◽  
Point Of View ◽  
South American ◽  
American Continent ◽  
The Pacific ◽  
The Pacific Ocean ◽  
South American Continent ◽  
Reef Formation ◽  
Water Coral

Darwin's letters and some rough notes found in his field notebooks of 1835 confirm the statement in his Autobiography that he had formulated his theory of coral reef formation before the Beagle left South America and before he had seen a coral reef. His geological observations having convinced him of the elevation of the South American continent, Darwin predicted that evidence of a compensatory gradual subsidence of the Pacific Ocean floor would be found in the existence of shallow-water coral genera in the Pacific reef formations. The first draft of the theory was written on board the Beagle shortly after seeing the reefs of Moorea in November 1835. After visiting the Cocos (Keeling) Islands he wrote a summary of his view in a letter of April 1838, in which he expressed his conviction that he had found an explanation which would "put some of the facts in a more simple and connected point of view, than that in which they have hitherto been considered".

The Relations of Great Britain with Guiana

1923 ◽  
Vol 6 ◽  
pp. 1-21
Author(s):  
G. C. Edmundson
Keyword(s):  
Sixteenth Century ◽  
South American ◽  
American Continent ◽  
The South ◽  
Mountain Ranges ◽  
North East ◽  
The North ◽  
Terra Incognita ◽  
Rio Negro ◽  
South American Continent

Guiana, in the larger sense of the word, is that portion of the South American continent bounded on the north and north-east by the ocean; on the south, south-west and west by the river Amazon, its tributary the Rio Negro, the river Cassiquiare, which unites the river Negro to the river Orinoco, and by the river Orinoco itself. It is thus an island; as there is no break in the water-line that surrounds it. This larger Guiana is, however, divided into two distinct portions, separated from one another by a series of mountain ranges stretching from the Orinoco to the river Oyapok. That portion, which lies between these mountain ranges and the sea, differs entirely in character from the Guiana of the watersheds of the Amazon and Orinoco. It consists of a succession of tablelands, rising one above the other, and is watered by a large number of nearly parallel rivers, whose cataracts and frequent rapids render navigation into the interior, except by canoes, practically impossible. In this Guiana, the Guiana with which this paper deals, there have never been any Spanish or Portuguese settlements. At the end of the sixteenth century no attempt had been made by the Spaniards to cross the river Orinoco, or by the Portuguese, to reach the mouth of the river Amazon. Between these two rivers lay a terra incognita, of which nothing was known, until the publication of Ralegh's Discoverie of Guiana in 1595.

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