Lectotipificaciones en Alternanthera (Amaranthaceae) del Sur de América del Sur

2020 ◽  
Vol 28 (2) ◽  
pp. 90-93
Author(s):  
Néstor D. Bayón ◽  
Daniel A. Giuliano
Keyword(s):  
South America ◽  
Southern Cone ◽  
Southern Brazil ◽  
América Del Sur

Lectotypes are designated for 10 names pertaining to species of Alternanthera Forssk. from Bolivia and the Southern Cone of South America (Argentina, Southern Brazil, Chile, Paraguay, and Uruguay): Achyranthes capituliflora Bertero, Achyranthes halimifolia Lam., Alternanthera coriacea Herzog, Alternanthera flavescens Kunth, Alternanthera gomphrenoides Kunth, Alternanthera paniculata Kunth, Telanthera crucis Moq., T. densiflora Moq., T. floridana Chapm., and T. manillensis Walp.

Trojan hosts: the menace of invasive vertebrates as vectors of pathogens in the Southern Cone of South America

2021 ◽  
Author(s):  
Luciano F. La Sala ◽  
Julián M. Burgos ◽  
Alberto L. Scorolli ◽  
Kimberly VanderWaal ◽  
Sergio M. Zalba
Keyword(s):  
South America ◽  
Southern Cone

Assessment of heat stress and cloudiness probabilities in post-flowering of spring wheat and canola in the Southern Cone of South America

2021 ◽  
Author(s):  
Gonzalo Martín Rivelli ◽  
María Elena Fernández Long ◽  
Leonor Gabriela Abeledo ◽  
Daniel Fernando Calderini ◽  
Daniel Julio Miralles ◽  
...  
Keyword(s):  
Heat Stress ◽  
South America ◽  
Spring Wheat ◽  
Southern Cone

Two new species of Margyricarpus (Rosaceae, Sanguisorbeae) from high-elevation grasslands in southern Brazil, and other notes on the genus Margyricarpus

Phytotaxa ◽  
2021 ◽  
Vol 496 (3) ◽  
pp. 281-293
Author(s):  
LUÍS A. FUNEZ ◽  
GUSTAVO HASSEMER ◽  
NIVALDO PERONI ◽  
ELISANDRO R. DRECHSLER-SANTOS
Keyword(s):  
New Species ◽  
South America ◽  
Species Complex ◽  
High Elevation ◽  
Southern Brazil ◽  
Distribution Map ◽  
Natural Grasslands ◽  
Two New Species

Margyricarpus pinnatus is a poorly understood entity from natural grasslands of South America that it better considered as a species complex. In this work we contribute to the advancement of the taxonomic knowledge of this challenging species complex by describing two new species of Margyricarpus from southern Brazil. We present field photographs, illustrations, a distribution map and ecologic and conservation notes on the new species.

scholarly journals On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil

2015 ◽  
Vol 87 (1) ◽  
pp. 15-27 ◽  
Author(s):  
José D. Ferreira ◽  
Martín Zamorano ◽  
Ana Maria Ribeiro
Keyword(s):  
South America ◽  
Rio Grande ◽  
Species Level ◽  
External Morphology ◽  
Latitudinal Distribution ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Diagnostic Features ◽  
New Material

The genus Panochthus represents the last lineage of "Panochthini" recorded in the Pleistocene. This genus has a wide latitudinal distribution in South America, and in Brazil it occurs in the southern and northeastern regions. In this paper we describe new material (isolated osteoderms and caudal tube fragments) assigned to Panochthus from the state of Rio Grande do Sul (southern Brazil) and discuss some taxonomic issues related to Panochthus tuberculatus and Panochthus greslebini based on this material . The occurrence of P. greslebini is the first for outside the Brazilian Intertropical Region. In addition, we describe new diagnostic features to differentiate the osteoderms of P. greslebini and P. tuberculatus. Unfortunately, it was not possible to identify some osteoderms at the species level. Interestingly, they showed four distinct morphotypes characterized by their external morphology, and thus were attributed to Panochthus sp. Lastly, we conclude that in addition to P.tuberculatus registered to southern Brazil, there is another species of the genus, assignable to P. cf. P. greslebini. Our analysis reinforce the reliability of caudal tube characters for the classification of species of Panochthus.

scholarly journals Caráter das mudanças na America Latina. Algumas questões metodológicas

2014 ◽  
Vol 8 (2) ◽  
pp. 82
Author(s):  
Lucio Oliver Costilla
Keyword(s):  
Latin America ◽  
Civil Society ◽  
South America ◽  
The State ◽  
Political Society ◽  
Study Approach ◽  
Sociedad Civil ◽  
America Latina ◽  
América Del Sur ◽  
Hegemonic Construction

Resumo Este artigo aborda as atuais mudanças em curso na América do Sul, desde uma sociologia política crítica a partir de uma análise das interconexões entre sociedade política e sociedade civil, em especial gramsciana. Ela propõe ser a chave para construir um campo de problemas teóricos e metodológicos vinculados à teoria crítica e a questão do Estado em sentido integral, que permitam entender o que acontece na sociedade política (a disputa de projetos políticos) e, sobre tudo, na sociedade civil (o universo de ideologias, valores, visões de mundo em jogo). A questão não se trata aceitar a ótica dos autores políticos que dirigem as mudanças em marcha, se não configurar teoricamente a problemática das mudanças. Sugiro que este enfoque de estudo permita valorizar a capacidade de intervenção institucional e político-social das forças progressistas e perguntar se estão apostando, ou não, a elevar os níveis de organização e consciência das massas populares, questão chave na construção hegemônica. Conclui-se que a questão central a elucidar na última década e meia de governos progressistas na América do Sul é saber qual o Estado que se precisa para uma sociedade em expansão e empoderamento, e qual a sociedade civil necessária para sustentar, aprofundar ou consolidar as novas políticas em um sentido emancipador. Palavras-Chave: Crises e reconfiguração da América Latina. Ruptura epistemológica. Construção de problemáticas sociológicas. Crítica e política nas mudanças da América Latina.---ResumenEste articulo aborda las actuales mudanzas en curso en América del Sur desde una sociología política critica a partir de una análisis de las interconexiones entre sociedad política y sociedad civil en clave gramsciana. Propone que clave construir un campo de problemas teóricos y metodológicos vinculados a la teoría crítica y a la cuestión del Estado en el sentido integral, que permitan entender lo que acontece en la sociedad política (la disputa de proyectos políticos) y sobre todo en la sociedad civil (el universo de ideologías, valores, visiones del mundo en juego). La cuestión no pasa por aceptar la óptica de los actores políticos que dirigen los cambios en marcha, sino configurar teóricamente la problemática de los cambios. Sugiero que este enfoque de estudio permite valorar la capacidad de intervención institucional y político-social de las fuerzas progresistas y preguntarse si están apostando , o no, a elevar los niveles de organización y conciencia de las masas populares, cuestión clave en la construcción hegemónica. Se concluye que la cuestión central a dilucidar en la última década y media de gobiernos progresistas en América del Sur es saber cuál es el Estado que se precisa para una sociedad en expansión y empoderamiento, y cuál la sociedad civil necesaria para sustentar, profundizar o consolidar las nuevas políticas en un sentido emancipador.Palabras Clave: Crisis y reconfiguración de América Latina. Ruptura epistemológica. Construcción de problemáticas sociológicas. Crítica y política en las mudanzas de América Latina.---AbstractThis article covers the current changes taking place in South America, from a critical political sociology to an analysis of the interconnections between political society and civil society, especially Gramscian. This may be the key to building a field of theoretical and methodological problems linked to the critical theory and the issue of the State, which enables an understanding of the political society (the dispute of political projects) and, above all, of the civil society (the universe of ideologies, values, worldviews at stake). It is not a question of accepting the perspective of political figures that drive the ongoing changes, but to establish, theoretically, the issue of change. I suggest that this study approach will allow develop the ability of institutional and political-social intervention of the progressive forces and question if they are trying, or not, to raise levels of organization and consciousness of the masses, the key issue is in the hegemonic construction. I conclude that the key issue, from the last decade and a half of progressive governments in South America, is to know which is the state that is required for a society in expansion and empowerment and, in an emancipatory sense, which is the civil society needed to sustain, strengthen or consolidate the new policies. Keywords: Crisis and reconfiguration of Latin America. Epistemological rupture. Construction of sociological issues. Critical and political changes in Latin America.

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 Novedades corológicas de Taraxacum F.H. Wigg. (Asteraceae) para la flora de Argentina, Colombia y Perú

2018 ◽  
Vol 43 ◽  
pp. 117-123
Author(s):  
Antonio Galán de Mera ◽  
Eliana Leonor Linares Perea ◽  
Juan Montoya Quino ◽  
Iván Torres Marquina ◽  
José Alfredo Vicente Orellana
Keyword(s):  
South America ◽  
América Del Sur ◽  
Flora Of Argentina

Chorological novelties of Taraxacum F.H. Wigg. (Asteraceae) for the flora of Argentina, Colombia and PeruPalabras clave: Taraxacum, América del Sur, distribución, fitosociología.Key words: Taraxacum, South America, distribution, phytosociology.

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