Análise da sustentabilidade do processo de transformação da paisagem no concelho de Alter do Chão.

O uso sustentável do território é uma premissa nas políticas de ordenamento do território. Considera-se que a utilização do território é sustentável quando esta é realizada de acordo com a sua aptidão, considerada como a faculdade que determinada porção do território tem para produzir bens ou prestar serviços de forma equilibrada. Com este trabalho pretendeu-se analisar a transformação da paisagem no concelho de Alter do Chão entre 1990 e 2007, bem como avaliar a adequabilidade da ocupação do território às suas potencialidades numa óptica de sustentabilidade. Para o efeito, procedeu-se ao cruzamento dos temas relativos à ocupação do solo com os dados da potencialidade dos solos, obtendo-se desta forma a adequabilidade do uso. Finalmente, analisou-se a influência das políticas agro-florestais na transformação da paisagem. Constatou-se que, no período em apreço a ocupação do território esteve genericamente de acordo com as potencialidades de uso identificadas, tendo-se, no entanto, verificado um aumento das áreas sub-exploradas. No concelho ocorreu uma modificação de uso agrícola para uma ocupação de matos e pastagens naturais. Em 1990 a área afecta ao uso agrícola era superior a 43%. Em 2007 esta área diminuiu para cerca de 22%. Esta alteração de uso resultou da reconversão de áreas agrícolas para usos associados a um regime de exploração mais extensivo, que alguns agricultores efectuaram, aproveitando os benefícios da alteração da PAC (Política Agrícola Comum), beneficiando a não produção em alguns casos. A metodologia utilizada, ao permitir determinar a adequabilidade da estrutura circunstancial de uso face à matriz edáfica, assume uma utilidade para gestão futura, consistindo numa ferramenta a considerar no ordenamento e gestão do território.info:eu-repo/semantics/publishedVersio

Participación comunitaria y procesos de comunicación en la implementación de programas de reasentamiento de familias dentro del contexto del desarrollo urbano en Barranquilla (Colombia)

Planning processes of development and growth of the city of Barranquilla have required the relocation of the population living in areas of intervention actions. As part of the implementation of the New Management Plan Territorial (POT), the city plans to revitalize an area around the Magdalena River with a view to improving the quality of life of citizens and to increase competitiveness of the city. The revitalization project is known as project “La Loma “. Under the current Land Use Plan of Barranquilla (POT), the urban development project “La Loma” includes, among other activities, the transfer of a large number of people currently living in this area. For this reason, this article aims to review the current POT and documents from City Council and the Mayor’s office associated with the POT and “La Loma” project, in order to identify and analyze the component of community participation and communication related to the implementation of this project. The results of the documents revealed the presence of regulatory elements associated with community participation. The results also showed potentially useful spaces for the implementation of inclusive communication processes. Therefore, this article proposes a guide for the formulation of a strategic communication plan with a focus on participatory communication and dialogue facilitator to be used during the execution of urban projects that include the relocation of families. © 2016, Universidad del Norte. All rights reserved

ENDOPARASITAS EM CÃES (Canis familiaris) NA CIDADE DE CURITIBA PARANÁ BRASIL

O presente trabalho analisa prospectivamente as infecções múltiplas e isoladas em cães de estudantes de quatro instituições de ensino de Curitiba PR, através de exames de 264 amostras de fezes, colhidas no período de abril a julho de 2000 e examinadas de acordo com a técnica de WILLIS (1921). A infecção isolada causada por Ancylostoma sp. foi observada em maior porcentagem, seguida da parasitose múltipla pela associação Ancylostoma sp./Toxocara sp. Enteroparasites in dogs (Canis familiaris) from Curitiba, Paraná, Brasil Abstract The present study demonstrates the multiple and isolated infections caused by enteroparasites in dogs belonged to students of four schools from Curitiba, PR, by examination of 264 fecal samples, collected from April to July, 2000, and analyzed by the WILLIS (1921) technique. The isolated infection by Ancylostoma sp. was the highest percentage observed, while Ancylostoma sp. and Toxocara sp. were the multiple parasites most frequently found

Rings and bars: unmasking secular evolution of galaxies

Secular evolution gradually shapes galaxies by internal processes, in contrast to early cosmological evolution which is more rapid. An important driver of secular evolution is the flow of gas from the disk into the central regions, often under the influence of a bar. In this paper, we review several new observational results on bars and nuclear rings in galaxies. They show that these components are intimately linked to each other, and to the properties of their host galaxy. We briefly discuss how upcoming observations, e.g., imaging from the Spitzer Survey of Stellar Structure in Galaxies (S4G), will lead to significant further advances in this area of research.Comment: Invited review at "Galaxies and their Masks", celebrating Ken Freeman's 70-th birthday, Sossusvlei, Namibia, April 2010. To be published by Springer, New York, editors D.L. Block, K.C. Freeman, & I. Puerari; minor change

Greenhouse gas emissions from inland waters: A perspective and research agenda for the tropics and subtropics

peer reviewedStrong consensus indicates that inland waters emit globally significant quantities of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Tropical inland waters are often considered major contributors to higher greenhouse gas fluxes, yet accurate estimates of aquatic greenhouse gas fluxes are limited for the tropics. We provide a historical perspective on research carried out across low latitudes since the 1980s, synthesize current understanding of the sources and drivers of greenhouse gas emissions, and highlight priority research areas for future tropical inland water greenhouse gas research. We show that much of the focus has been on the humid tropics while the wet-dry, (semi)arid, and mountainous regions remain underrepresented in global datasets. Consistent and reliable greenhouse gas emission estimates will require (1) addressing the observational mismatch with new data from understudied ecoregions, (2) favoring direct and high-resolution carbon dioxide measurements over indirect estimates based on water chemistry parameters, (3) developing approaches that cross boundaries between ecosystem types and scales, and (4) sharing and publishing data more systematically

The chemical compound 'Heatin' stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1-subfamily of nitrilases

Temperature passively affects biological processes involved in plant growth. Therefore, it is challenging to study the dedicated temperature signalling pathways that orchestrate thermomorphogenesis, a suite of elongation growth-based adaptations that enhance leaf-cooling capacity. We screened a chemical library for compounds that restored hypocotyl elongation in the pif4-2-deficient mutant background at warm temperature conditions in Arabidopsis thaliana to identify modulators of thermomorphogenesis. The small aromatic compound 'Heatin', containing 1-iminomethyl-2-naphthol as a pharmacophore, was selected as an enhancer of elongation growth. We show that ARABIDOPSIS ALDEHYDE OXIDASES redundantly contribute to Heatin-mediated hypocotyl elongation. Following a chemical proteomics approach, the members of the NITRILASE1-subfamily of auxin biosynthesis enzymes were identified among the molecular targets of Heatin. Our data reveal that nitrilases are involved in promotion of hypocotyl elongation in response to high temperature and Heatin-mediated hypocotyl elongation requires the NITRILASE1-subfamily members, NIT1 and NIT2. Heatin inhibits NIT1-subfamily enzymatic activity in vitro and the application of Heatin accordingly results in the accumulation of NIT1-subfamily substrate indole-3-acetonitrile in vivo. However, levels of the NIT1-subfamily product, bioactive auxin (indole-3-acetic acid), were also significantly increased. It is likely that the stimulation of hypocotyl elongation by Heatin might be independent of its observed interaction with NITRILASE1-subfamily members. However, nitrilases may contribute to the Heatin response by stimulating indole-3-acetic acid biosynthesis in an indirect way. Heatin and its functional analogues present novel chemical entities for studying auxin biology

Evolutionary Heritage Influences Amazon Tree Ecology

Lineages tend to retain ecological characteristics of their ancestors through time. However, for some traits, selection during evolutionary history may have also played a role in determining trait values. To address the relative importance of these processes requires large-scale quantification of traits and evolutionary relationships among species. The Amazonian tree flora comprises a high diversity of angiosperm lineages and species with widely differing life-history characteristics, providing an excellent system to investigate the combined influences of evolutionary heritage and selection in determining trait variation. We used trait data related to the major axes of life-history variation among tropical trees (e.g. growth and mortality rates) from 577 inventory plots in closed-canopy forest, mapped onto a phylogenetic hypothesis spanning more than 300 genera including all major angiosperm clades to test for evolutionary constraints on traits. We found significant phylogenetic signal (PS) for all traits, consistent with evolutionarily related genera having more similar characteristics than expected by chance. Although there is also evidence for repeated evolution of pioneer and shade tolerant life-history strategies within independent lineages, the existence of significant PS allows clearer predictions of the links between evolutionary diversity, ecosystem function and the response of tropical forests to global change