scholarly journals Strategies of environmental knowledge production facing land use changes: Insights from the Silvicultural Zoning Plan conflict in the Brazilian state of Rio Grande do Sul

Cybergeo ◽  
2011 ◽  
Author(s):  
Pierre Gautreau ◽  
Eduardo Vélez
2018 ◽  
Vol 18 (1) ◽  
pp. 25-39
Author(s):  
Katia Helena Lipp-Nissinen ◽  
Bruna de Sá Piñeiro ◽  
Letícia Sebastião Miranda ◽  
Alexandre de Paula Alves

Author(s):  
Vaneza Cauduro Peranzoni ◽  
Alieze Nascimento da Silva ◽  
Carine Nascimento da Silva ◽  
Luana Possamai Menezes

This work explores the experience of team participation the University of Cruz Alta Cruz Alta Rio Grande do Sul, Rondon Project. With goal to integrate the student to reality Brazil, and develop political, economic, and health care activities education for the poor, in January 2012, teachers and students visited the city of Aguiarnópolis, state of Tocantins in Brazil. The project is the intellectual effort of research and understanding of the process history, involving the saga of Brazilian Cândido Mariano Rondon and his legacy to the formation of anthropologists. This study proposes a reflection on Rondon Project while the university democratization of space public, considering it essential to approach institution with society. The Rondon Project is an extension activity that aims to consolidate the sense of social responsibility in university, knowledge on different Brazilian realities and production local collective projects.  It is intended, finally, contribute through this study to highlight the importance of alliance between scientific knowledge and empirical in everyone's life citizens, and the contribution of the Rondon Project to provide this exchange of knowledge between students and underserved communities.


2017 ◽  
Vol 10 (5) ◽  
pp. 1435
Author(s):  
Viviane Capoane ◽  
Tales Tiecher ◽  
Danilo Rheinheimer dos Santos

Este trabalho investigou os efeitos da topografia e das práticas de uso e manejo do solo na variabilidade de alguns atributos do solo ao longo de três topossequências localizadas no planalto do Rio Grande do Sul. As topossequências (Tps) estão inseridas em uma bacia hidrográfica situada no município de Júlio de Castilhos. Na Tp1 foram definidos quatro pontos de amostragem e na Tp2 e Tp3, cinco pontos. Em cada perfil foram coletadas amostras em 5 camadas de solo (0‒5, 5‒10, 10‒20, 20‒40 e 40‒60 cm). Em laboratório foram determinados os atributos: densidade, argila, pH em água, carbono (C) orgânico total, fósforo (P) total, P orgânico total, P disponível, óxidos de ferro (Fe) e alumínio (Al) cristalinos e amorfos. Os resultados encontrados mostram que o movimento de sedimentos em superfície e através do perfil do solo é controlado pela posição, forma e declividade da encosta e, pelas atividades antrópicas como o uso e manejo do solo e aplicação de fertilizantes. Considerando as classes de uso da terra, os maiores teores de C e P (total, orgânico e disponível) foram obtidos na área úmida, seguido da lavoura e campo nativo. Considerando a posição na encosta os teores de C e P foram maiores na baixada seguido da base da encosta, topo e meia encosta. A condição hidromórfica ao longo das topossequências desempenhou um papel importante na disponibilidade de P, acúmulo C orgânico total e solubilização dos óxidos de Fe e Al. A B ST R A C TThis work investigated the effects of topography and land use and soil management practices on the variability of some soil properties along three toposequences located in the Rio Grande do Sul plateau, Southern Brazil. The toposequences (Tps) evaluated are from a watershed located in the municipality of Júlio de Castilhos. Soil samples were taken in four points in Tp1 and in five points in Tp2 and Tp3. In each point samples were taken at five depths (0‒5, 5‒10, 10‒20, 20‒40, and 40‒60 cm). The soil properties evaluated were soil density, clay, pH in water, total organic carbon (C), total phosphorus (P), total organic P, available P, and amorphous and crystalline iron (Fe) and aluminum (Al) oxides. Results show that the transport of sediments on the surface and through the soil profile is controlled by topographic position, landform, slope, and also by the anthropic activities such as the use and management of the soil and the application of fertilizers. Considering the classes of land use, the highest levels of C and P (total, organic and available) were obtained in the wetlands, followed by the crop fields and natural grasslands. Considering the topographic position, the contents of C and P were higher in the floodplain followed by the base of the slope, top and middle slope. Hydromorphic conditions along the toposequences played an important role in P availability, total organic C accumulation and solubilization of Fe and Al oxides.keywords: Land use, topographic position, soil profile, soil properties. 


Phytotaxa ◽  
2019 ◽  
Vol 411 (1) ◽  
pp. 39-48 ◽  
Author(s):  
VERÔNICA A. THODE ◽  
SÉRGIO AUGUSTO DE LORETO BORDIGNON

Two species of Glandularia from Rio Grande do Sul Brazilian state are described, G. rupestris V. Thode & Bordignon and G. sessilifolia V. Thode & Bordignon. Detailed morphological descriptions, geographical distribution, evaluation of their IUCN conservation status and photographs are presented. Comparison tables with morphologically similar species occurring in Rio Grande do Sul and an identification key to the species occurring in Brazil are also provided.


2020 ◽  
Vol 31 (2) ◽  
pp. 308-324
Author(s):  
Anderson Marques Garcia

In the Brazilian state of Rio Grande do Sul, the term cerrito was traditionally used to designate archaeological phenomena that emerge in the form of mounds in different landscapes. Except for recent research developed in the southwestern region of the Patos Lagoon, few advances have occurred since the 1980s in the study of cerritos in Brazil. This article presents an analysis of the lithic industries of sites with mounds in the southwestern region of the Patos Lagoon and in the central region in the current territory of Rio Grande do Sul. The results, along with other data from the sites, suggest that coastal sites were occupied by sedentary fisher-hunter-gatherers, who also possibly domesticated certain plants. Lithic material was scarce there and was mainly produced from pebbles and quartz cobbles using the anvil technique. In contrast, central region formations presented mounds on outcrops, using land, pebbles, and boulders; the area was occupied by a hunter-gatherer group that had projectile points and other instruments carved mainly by façonnage and débitage.


Phytotaxa ◽  
2013 ◽  
Vol 131 (1) ◽  
pp. 23
Author(s):  
MARTIN GRINGS ◽  
OSMAR DOS SANTOS RIBAS

Mimosa sobralii (Fabaceae), a new species of tree endemic to the northern highland slopes of the Brazilian state of Rio Grande do Sul, is described and illustrated. The new species is close to M. bifurca, from which it is set apart by the arborescent habit, yellow flowers and differences in leaflet morphology.


2021 ◽  
Vol 19 (1) ◽  
pp. 152-164
Author(s):  
BRUNO DE SOUZA LESSA ◽  
FERNANDO DIAS LOPES ◽  
CÉLIA ELIZABETE CAREGNATO

Abstract This article aimed to discuss how Pierre Bourdieu’s concept of reflexivity was conceived, and how it influenced and was developed by Bernard Lahire’s in his sociology. To operationalize the way the concept is articulated, but emphasizing its development by Lahire, this paper presents as an empirical case how reflexivity was engendered in José Francisco Bernardes Milanez’ biographical trajectory, a historical environmental activist from the Brazilian state of Rio Grande do Sul. The central argument we defend is that the Bourdieusian-inspired concept of reflexivity has a certain objectivist and structuralist weight, which gives a secondary role to individuals’ reflection capacity and agency. Despite this weight, reflexivity acts as a mediator between structures and their individual agency within actors’ social lives. In this sense, reflexive capacities can be better understood and analyzed by considering the ways individuals connect their daily practices, dialectically and concomitantly, with reflexive processes. This article emphasizes that sociological analyses at the individual level can be potentially more substantive if they consider structure, agency, and reflexivity in an integrated way. Finally, we argue that the conceptual and argumentative association of elements from the two authors helps to avoid false antinomies.


2020 ◽  
Vol 14 ◽  
Author(s):  
Wladimir Colman De Azevedo Junior ◽  
Marcos Rodrigues

Intensive agricultural production tends to stimulate the outflow of nutrients from the soil, requiring producers to properly manage the soil to avoid reducing fertility in the following crops. Thus, the objective was to estimate the annual monetary balance of nutrients in the soil of six Brazilian states that present the highest consumption of inorganic fertilizers in the years 2005 and 2015. The Annual Balance of Nutrients in Soil was used to calculate the physical and monetary balance of nutrients, in the main crops of these States, by quantifying the export of N, P, K from the soil by plants and the insertion of nutrients, through the application of fertilizers, fertigation, and biological fixation. The monetary balance of N, P and K added for the six states was positive and increased by 114% between 2005 and 2015, however, the balance of P for the state of Paraná was negative in 2015 reaching R$ 1,769.17. The balances and Mato Grosso, Rio Grande do Sul, and Paraná were higher concerning Goiás, São Paulo, and Minas Gerais. Except for Paraná, related to P, there was no positive depreciation of the associated NPK nutrients. The different flows, in the comparison among states, are caused by the different dynamics of land use, mainly in the size of the corn and soybean cultivation area.


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