DOES NICHE CONSERVATISM PROMOTE SPECIATION? A CASE STUDY IN NORTH AMERICAN SALAMANDERS

Evolution ◽  
2006 ◽  
Vol 60 (12) ◽  
pp. 2604 ◽  
Author(s):  
Kenneth H. Kozak ◽  
John J. Wiens
Keyword(s):  
North American ◽  
Niche Conservatism

DOES NICHE CONSERVATISM PROMOTE SPECIATION? A CASE STUDY IN NORTH AMERICAN SALAMANDERS

Evolution ◽  
2006 ◽  
Vol 60 (12) ◽  
pp. 2604-2621 ◽  
Author(s):  
Kenneth H. Kozak ◽  
JohnJ. Wiens
Keyword(s):  
North American ◽  
Niche Conservatism

Territoriality and the Historiography of Early North America

2016 ◽  
Vol 50 (3) ◽  
pp. 515-536
Author(s):  
MATTHEW BABCOCK
Keyword(s):  
North America ◽  
Indigenous Peoples ◽  
North American ◽  
Interdisciplinary Approach ◽  
Political Control ◽  
Multiple Perspectives ◽  
Indigenous Perspective

This essay explores the interdisciplinary origins and historiography of early North American scholars approaching territoriality – political control of territory – from an indigenous perspective in their works. Using the Ndé (Apaches) as a case study, it reveals how adopting an interdisciplinary approach that addresses territoriality from multiple perspectives can further our understanding of cultural contestation across the continent and hemisphere by highlighting the ways indigenous peoples negotiated, resisted, and adapted to European conquest.

scholarly journals A procura pela libertação em Exodus: a dimensão trágica do deslocamento de refugiados nas imagens de Mauricio Lima

2020 ◽  
Vol 7 ◽  
pp. 1-18
Author(s):  
Janayna Ávila
Keyword(s):  
New York ◽  
Qualitative Research ◽  
North American ◽  
New York Times ◽  
The New York Times ◽  
The North ◽  
Personal Interactions ◽  
Analysis Of The Images ◽  
Expressive Dimension

This article reflects on the issue of the refugees from four photographs of the series Exodus by Brazilian photographer Mauricio Lima, published on the North American newspaper The New York Times and Pulitzer winner in 2016. Its main objective is to analyze the boundaries between the duty of contemporary photojournalism and the obtainmentof images of refugees. For that, we used as theoretical reference reflections proposed by Appadurai, Bauman, Martínez, Sontag, Shore, Rouillé and Zanforlin. Methodologically, we worked with qualitative research and case study from the analysis of the images and bibliographic research. As a result, it is considered that Lima’s images bring original expressive dimension and seek personal interactions to build profound narratives.

Antidumping Provisions in Preferential Trade Agreements

2017 ◽  
Author(s):  
Thomas J. Prusa
Keyword(s):  
North American ◽  
Trade Agreements ◽  
Preferential Trade Agreements ◽  
Preferential Trade ◽  
Playing Field ◽  
Usage Patterns

Using information culled from 217 PTAs we find that nearly three out of four PTAs include either additional AD rules or prohibit the use of AD against PTA members. PTA rules generally either prohibit AD protection against members or make AD protection harder to apply. As a result, PTAs may further tilt the playing field toward members by shifting contingent protection toward non-members – protection diversion. We examine AD usage patterns by NAFTA countries as a case study of PTA rules. We find evidence that NAFTA rules have discouraged the intra-North American use of AD and likely increased the incidence against non-NAFTA countries. We also discuss usage trends across a wider set of PTAs and again find evidence that PTA rules have altered the pattern of AD activity, likely lowering the incidence against members and shifting the restrictions to non-members.

Early Sevier orogenic deformation exerted principal control on changes in depositional environment recorded by the Cretaceous Newark Canyon Formation

2020 ◽  
Vol 90 (9) ◽  
pp. 1175-1197
Author(s):  
Anne C. Fetrow ◽  
Kathryn E. Snell ◽  
Russell V. Di Fiori ◽  
Sean P. Long ◽  
Joshua W. Bonde
Keyword(s):  
North American ◽  
Global Climate ◽  
Sedimentary Basins ◽  
River System ◽  
Structural Deformation ◽  
Braided River ◽  
Thrust Belt ◽  
North American Cordillera ◽  
The North

ABSTRACT Terrestrial sedimentary archives record critical information about environment and climate of the past, as well as provide insights into the style, timing, and magnitude of structural deformation in a region. The Cretaceous Newark Canyon Formation, located in central Nevada, USA, was deposited in the hinterland of the Sevier fold–thrust belt during the North American Cordilleran orogeny. While previous research has focused on the coarser-grained, fluvial components of the Newark Canyon Formation, the carbonate and finer-grained facies of this formation remain comparatively understudied. A more complete understanding of the Newark Canyon Formation provides insights into Cretaceous syndeformational deposition in the Central Nevada thrust belt, serves as a useful case study for deconvolving the influence of tectonic and climatic forces on sedimentation in both the North American Cordillera and other contractional orogens, and will provide a critical foundation upon which to build future paleoclimate and paleoaltimetry studies. We combine facies descriptions, stratigraphic measurements, and optical and cathodoluminescence petrography to develop a comprehensive depositional model for the Newark Canyon Formation. We identify six distinct facies that show that the Newark Canyon Formation evolved through four stages of deposition: 1) an anastomosing river system with palustrine interchannel areas, 2) a braided river system, 3) a balance-filled, carbonate-bearing lacustrine system, and 4) a second braided river system. Although climate undoubtedly played a role, we suggest that the deposition and coeval deformation of the synorogenic Newark Canyon Formation was in direct response to the construction of east-vergent contractional structures proximal to the type section. Comparison to other contemporary terrestrial sedimentary basins deposited in a variety of tectonic settings provides helpful insights into the influences of regional tectonics, regional and global climate, catchment characteristics, underlying lithologies, and subcrop geology in the preserved sedimentary record.

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