chaco region
Recently Published Documents


TOTAL DOCUMENTS

126
(FIVE YEARS 43)

H-INDEX

19
(FIVE YEARS 2)

2022 ◽  
Vol 172 ◽  
pp. 104362
Author(s):  
Emilce Viruel ◽  
Cecilia A. Fontana ◽  
Edoardo Puglisi ◽  
Jose A. Nasca ◽  
Natalia R. Banegas ◽  
...  

Author(s):  
Jhean-Carla Echalar ◽  
◽  
Romina Cossio-Rodriguez ◽  
David Veliz ◽  
Fabricio Cardozo-Alarcon ◽  
...  

Control of the Chagas disease vector, Triatoma infestans(Klug) (Hemiptera: Reduviidae) with synthetic pesticides in Bolivia has become increasingly inefficient due to the development of resistance in the insects. In the Chaco region of Bolivia, guaraní populations have approached the problem by fumigating their houses with the smoke of native plants. Through interviews and field work with local guides, the main plant used by the guaraníes was collected and later identified as Capsicum baccatumL. var. baccatum(Solanaceae). In choice bioassays, filter papers exposed to the smoke of the plant repelled nymphs of T. infestans. Activity remained significant after storing the exposed filter papers for 9 days. Chemical analysis of smoke and literature data suggested that capsaicinoids present in the smoke were responsible for the repellent effect. The data presented provide a rationale for the use of C. baccatumvar. baccatumto control the Chagas vector bythe guaraní populations.


2022 ◽  
Vol 72 ◽  
pp. 102443
Author(s):  
Valeria Hernández ◽  
Maria Florencia Fossa Riglos ◽  
Carolina Vera

2022 ◽  
Vol 112 (1) ◽  
pp. 116-123
Author(s):  
Mario Atencio ◽  
Hazel James-Tohe ◽  
Samuel Sage ◽  
David J. Tsosie ◽  
Ally Beasley ◽  
...  

Arguing for the importance of robust public participation and meaningful Tribal consultation to address the cumulative impacts of federal projects, we bridge interdisciplinary perspectives across law, public health, and Indigenous studies. We focus on openings in existing federal law to involve Tribes and publics more meaningfully in resource management planning, while recognizing the limits of this involvement when only the federal government dictates the terms of participation and analysis. We first discuss challenges and opportunities for addressing cumulative impacts and environmental justice through 2 US federal statutes: the National Environmental Policy Act and the National Historic Preservation Act. Focusing on a major federal planning process involving fracking in the Greater Chaco region of northwestern New Mexico, we examine how the Department of the Interior attempted Tribal consultation during the COVID-19 pandemic. We also highlight local efforts to monitor Diné health and well-being. For Diné people, human health is inseparable from the health of the land. But in applying the primary legal tools for analyzing the effects of extraction across the Greater Chaco region, federal agencies fragment categories of impact that Diné people view holistically. (Am J Public Health. 2022;112(1):116–123. https://doi.org/10.2105/AJPH.2021.306562 )


2021 ◽  
Vol 11 (1) ◽  
pp. 27-31
Author(s):  
Íthalo Faria Ribeiro ◽  
José Petters ◽  
Lilian Cristina Batista Cirne

2021 ◽  
Vol 14 (1) ◽  
pp. 094
Author(s):  
Flávia Fernanda Azevedo Fagundes ◽  
Ivana Riêra Pereira Bastos ◽  
Michelle Simões Reboita ◽  
Gustavo Carlos Juan Escobar

Como há poucos estudos na literatura que descrevem a estrutura física das baixas térmicas no noroeste da Argentina (BNOA), isso torna-se o objetivo do presente trabalho. Para isso, são utilizados dados da Global Forecast System Analysis (GFSanl - Sistema de Previsão Global). O caso de BNOA em estudo teve gênese no dia 29 de outubro de 2009 às 0600 UTC e perdurou até o dia 03 de novembro às 1200 UTC. Sua estrutura vertical mostra máximo aquecimento e vorticidade relativa ciclônica entre a superfície e 750 hPa ao longo das longitudes de 70º a 65º W. Em níveis médios, durante todo o ciclo de vida da BNOA, predominou uma crista no escoamento atmosférico. A influência de sistemas transientes causa a desconfiguração da BNOA.   Analysis of an episode of Thermal Low of Northwest Argentina A B S T R A C TIn South America, there are two favorable places for the genesis of thermal lows (low pressure system with semi-stationary feature): Chaco region and the northwest of Argentina. Thermal lows developed in these regions receive their names. So, the purpose of this study is to describe the physical structure of thermal low occurred over the northwest of Argentina (TLNA). For this reason, data from the Global Analysis of the Forecasting System (GFSanl - Global Forecasting System) are used. TLNA had genesis on October 29, 2009 at 0600 UTC and decayed on November 03 at 1200 UTC. Its vertical structure shows the maximum heating and the cyclonic relative vorticity between the surface and 750 hPa along the longitudes 70º-65º W. At middle levels, throughout the TLNA's lifecycle, a ridge in the atmospheric flow predominated. The influence of the transient systems causes the deconfiguration of TLNA.Keywords: thermal low; northwestern Argentina; anticyclone; transient systems


IAWA Journal ◽  
2021 ◽  
pp. 1-10
Author(s):  
Sandra Bravo ◽  
Stella Bogino ◽  
Marta Leiva ◽  
Martín Lepiscopo ◽  
María Alicia Cendoya ◽  
...  

Abstract Prosopis pugionata (Fabaceae) is a halophyte tree species that grows exclusively in Argentina’s arid environments, whose woodlands are mainly affected by fires and overgrazing. Here, we describe the wood anatomy and fire wounds of P. pugionata and their relationship with plant size and bark thickness. Besides, we attempt to determine the potential of P. pugionata for dendrochronological studies in order to date fire events throughout time. We tested the hypothesis that P. pugionataforms datable fire wounds, allowing its use for dendrochronological studies. The study area is located in the arid Argentine Chaco region. Seventeen individuals, varying from 15 to 65 years of age, were randomly sampled and bole disks were taken at 0.3, 1.3 and 2.3 m high. P. pugionatais a diffuse and semi-ring-porous hardwood species with growth rings delimited by marginal parenchyma bands. The bark is longitudinally fissured, with an average thickness of 0.19 cm, and a scarce increase with age. Seventy-seven percent of the samples showed fire wounds (). We identified fire scars (70%) and marks (30%), and differentiated them by wood growth interruption in the former. Sixty-one percent of fire wounds affected less than 20% of the cambial perimeter and there were no significant effects of age, bole diameter, bole height and bark thickness on the cambial damage percentage. After cross-dating, P. pugionata showed a mean correlation value between series of 0.5, which represents an accurate potential for dendrochronological studies. Twenty wildfires were dated from 1943 to 2007 in the study area with a fire frequency of 0.40 fires/year and a mean fire interval of 2.5 years. Wildfires frequency increased from 1980 to 0.48 fires/year and a mean fire interval of 2 years. Our results indicate that P. pugionata has the potential to date fires, considering its potential for dendrochronological studies, its ability to survive recurrent fires and forms identifiable wound scars in the wood.


Author(s):  
F. Fernández Campón ◽  
V. Nisaka Solferini ◽  
R. Carrara ◽  
A. E. Marvaldi ◽  
V. Confalonieri

Flora ◽  
2021 ◽  
Vol 275 ◽  
pp. 151751
Author(s):  
Amalia Valeria Ibañez Moro ◽  
Sandra Josefina Bravo ◽  
Nelly Roxana Abdala ◽  
Fabian Borghetti ◽  
Adalgisa Maria Chaib ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document