Primeira ocorrência de Pleurodira (Testudines) para a Formação Guabirotuba, Bacia de Curitiba, Paraná, Brasil

The vertebrate fossil record of the Guabirotuba Formation, Curitiba Basin (Cenozoic), South Brazil, was restricted to a crocodyliform tooth and indeterminate bone fragments. New specimens collected in an outcrop located in Curitiba city, in the State of Paraná, are herein described and represent the first record of Pleurodira (Testudines) to this basin. The presence of aquatic Testudines associated to Crocodyliformes corroborates the lacustrine and fluvial paleoenvironment for the Guabirotuba Formation deposition and indicates a more humid climate than previously proposed.Keywords: Testudines, Pleurodira, Curitiba Basin, Guabirotuba Formation, Cenozoic.O registro de vertebrados fósseis da Formação Guabirotuba, Bacia de Curitiba (Cenozoico), no sul do Brasil, restringia-se a um dente de crocodiliforme e fragmentos ósseos indeterminados. Novos espécimes, coletados em afl oramento localizado na cidade de Curitiba, no Estado do Paraná, são aqui descritos e correspondem ao primeiro registro de Pleurodira (Testudines) para a bacia. A presença de Testudines aquáticos, associadas a Crocodyliformes corrobora a interpretação de um paleoambiente fluvio-lacustre para os depósitos da Formação Guabirotuba e indica um clima mais úmido do que previamente proposto.Palavras-chave: Testudines, Pleurodira, Bacia de Curitiba, Formação Guabirotuba, Cenozoico

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pátio cercado por árvores de espinho e outras frutas, sem ordem e sem simetria: O quintal em vilas e arraiais de Minas Gerais (séculos XVIII e XIX)

This article analyses urban and rural backyards in Minas Gerais, in the late18th and early 19th centuries. Sources include probate records, foreign travelers accounts, administrative documents and iconography. These spaces are interpreted as a part of material culture, as provisioning grounds, and places of sociability and family intimacy. The connections of yards within households and the surrounding streetscapes are examined, revealing that they can be viewed as instruments of balance in the overall urban landscape.O texto objetiva analisar os quintais urbanos e rurais em Minas Gerais, ao final do século XVIII e início do século XIX. Interpreta evidências documentais de inventários post mortem, narrativas de viajantes estrangeiros, documentos administrativos e iconográficos, interpretando esses espaços, na perspectiva da cultura material, como lugares de abastecimento alimentar, sociabilidades e da intimidade familiar. Considera a ligação dos quintais com a casa e as ruas e os vê como espaços de equilibrio da paisagem urbana

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

Comparison between polypropylene and polypropylene with poliglecaprone meshes on intraperitoneal adhesion formation

ABSTRACT Objective: to compare intraperitoneal adhesion formation in rats when using polypropylene and polypropylene with poliglecaprone meshes. Methods: we used twenty male, Wistar rats, divided in two groups. In group 1, the rats received the polypropylene mesh on their right side and the polypropylene with poliglecaprone mesh on their left side. In group 2 the position of the meshes was inverted. After 30 days, we analyzed the presence or not of adhesion formation, including only those over the meshes. The findings undergone an analysis through the Mann-Whitney test, at a level of significance of p≤0.05. Results: all meshes presented adhesions. We verified that, for the polypropylene meshes, the percentage of their surface covered by adhesions varied from 10.5 to 100%, with an average of 34.07±24.21%, while for the polypropylene with poliglecaprone mesh, the percentage covered by adhesions varied between 8.5% and 100%, with an average of 44.7±32.85% (p=0.12). Conclusion: both meshes lead to adhesion formation, none being superior to the other

Trabalhos completos - Educação

Trabalhos completos - Educaçã