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

scholarly journals Assessment of Heat Stress and Cloudiness Probabilities in Post-Flowering of Wheat and Canola in The Southern Cone of South America

2021 ◽  
Author(s):  
Gonzalo Martín Rivelli ◽  
María Elena Fernández Long ◽  
Leonor Gabriela Abeledo ◽  
Daniel Calderini ◽  
Daniel Julio Miralles ◽  
...  
Keyword(s):  
Heat Stress ◽  
Solar Radiation ◽  
South America ◽  
Southern Cone ◽  
Maximum Temperature ◽  
Curvilinear Relationship ◽  
Climate Scenarios ◽  
Incident Solar Radiation ◽  
Probability Of Occurrence ◽  
Combined Stresses

Abstract Episodes of heat stress constrain crop production and will be aggravated in the near future according to short and medium-term climate scenarios. Global increase in cloudiness has also been observed, decreasing the incident solar radiation. This work was aimed to quantify the probability of occurrence of heat stress and cloudiness, alone or combined, during the typical post-flowering period of wheat and canola in the Southern Cone of South America. Extended climate series (last 3-5 decades with daily register) of 33 conventional weather stations from Argentina, Brazil, Chile and Uruguay (23ºS to 40ºS) were analysed considering the period from September to December. Two different daily events of heat stress were determined: i) maximum daily temperature above 30ºC (T>30ºC), and ii) 5ºC above the historical average maximum temperature of that day (T+5ºC). A cloudiness event was defined in our work as incident solar radiation 50% lower than the historical average radiation of that day (R50%). The T>30ºC event increased its probability of occurrence throughout the post-flowering phase, from September to December. By contrast, the risk of T+5ºC event decreased slightly, just like for R50%, and the higher the latitude, the lower the probability of R50%. The T>30ºC plus R50% combined stresses reached greater cumulated probabilities during post-flowering, compared to T+5ºC plus R50%, being 42% vs. 15% in northernmost locations, 26% vs. 19% in central (between 31ºS to 35ºS), and 28% vs. 1% in southernmost locations, respectively. A curvilinear relationship emerged between the monthly probability of combined stresses and the number of days with stress per month. In summary, T>30ºC was the most frequent thermal stress during post-flowering in wheat and canola. Both combined stresses had a noticeable risk of occurrence, but T>30ºC plus R50% was the highest. Evidence of the recent past and current occurrence of heat stress individually, and its combination with cloudiness events during post-flowering of temperate crops, serves as a baseline for future climate scenarios in main cropped areas in the Southern Cone of South America.

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

Archaeological trends in the Southern Cone of South America

1993 ◽  
Vol 1 (3) ◽  
pp. 235-266 ◽  
Author(s):  
Tom D. Dillehay
Keyword(s):  
South America ◽  
Southern Cone

Quest for the Origins and Implications for Social Rights of the Mapuche in the Southern Cone of South America

2013 ◽  
Vol 24 (2) ◽  
pp. 149-163 ◽  
Author(s):  
Tom D. Dillehay ◽  
Francisco Rothhammer
Keyword(s):  
South America ◽  
Cultural Influences ◽  
Southern Cone ◽  
Social Rights ◽  
Indigenous Status ◽  
Central Chile ◽  
High Profile ◽  
South Central ◽  
Indigenous Groups ◽  
First Time

Debates over the cultural and biological origins of some indigenous groups in the Americas have fueled discussions about cultural identity, political justice, and resource rights. A historically high-profile case of rights and origins has involved the Araucanians or Mapuche of the southern cone of South America. This article examines, for the first time, the recent interdisciplinary archaeological and other anthropological evidence for the Mapuche of Chile and Argentina. It suggests that the ethnic and territorial origin of the Mapuche is in central and south-central Chile, although biological and cultural influences from north Chile and western Argentina also are present. It briefly discusses the implication of this study in relation to the indigenous status of the Mapuche in present-day Chile and Argentina.

Marine ecosystem-based management in the Southern Cone of South America: Stakeholder perceptions and lessons for implementation

Marine Policy ◽  
2009 ◽  
Vol 33 (5) ◽  
pp. 801-806 ◽  
Author(s):  
Stefan Gelcich ◽  
Omar Defeo ◽  
Oscar Iribarne ◽  
Graciano Del Carpio ◽  
Random DuBois ◽  
...  
Keyword(s):  
South America ◽  
Marine Ecosystem ◽  
Southern Cone ◽  
Stakeholder Perceptions ◽  
Ecosystem Based Management

Hybrid Security Governance in South America: An Empirical Assessment

2019 ◽  
Vol 61 (04) ◽  
pp. 72-94
Author(s):  
Rafael Duarte Villa ◽  
Fabrício H. Chagas-Bastos ◽  
Camila de Macedo Braga
Keyword(s):  
South America ◽  
Security Policy ◽  
Southern Cone ◽  
South American ◽  
Governance Mechanism ◽  
Interstate Relations ◽  
Security Community ◽  
Security Governance ◽  
Peace And Conflict ◽  
Foreign And Security Policy

ABSTRACTContending rationales of peace and conflict coexist between countries and within regional spaces as conditions that motivate or constrain militarized behaviors. While the idea of balancing is still a relevant concept to understand contemporary security in South America, the region produces patterns of a nascent security community. This article argues that the regional repertoire of foreign and security policy practices draws on a hybrid security governance mechanism. The novelty brought by the cumulative interaction among South American countries is that the coexistence turns into a hybrid between both practices and discourses. To explain how hybrid formations are produced, this study analyzes the most empirically intense and academically controversial political and security interactions from interstate relations in the two security complexes in the region, the Southern Cone and the Northern Andes.

scholarly journals A decade of arbovirus emergence in the temperate southern cone of South America: dengue, Aedes aegypti and climate dynamics in Córdoba, Argentina

Heliyon ◽  
2020 ◽  
Vol 6 (9) ◽  
pp. e04858 ◽  
Author(s):  
Elizabet L. Estallo ◽  
Rachel Sippy ◽  
Anna M. Stewart-Ibarra ◽  
Marta G. Grech ◽  
Elisabet M. Benitez ◽  
...  
Keyword(s):  
South America ◽  
Aedes Aegypti ◽  
Southern Cone ◽  
Climate Dynamics
Sign in / Sign up

Export Citation Format

Share Document