The role of temporal scale in linear edge effects on a submontane Atlantic forest arboreal community

This study aims to detect the composition, abundance patterns, and successional stage distributions exhibited by arboreal species inside and at the linear edge of a submontane seasonal forest in the Chapada Diamantina (12°28'31'S, 41°23'14'W), Bahia, Brazil. The individual plants with breast height diameters ≥5 cm were sampled in 30 quadrats (10 m × 10 m), 15 in the forest edge and 15 inside the forest. Species were classified according to successional category. Phytosociological and diversity indices were calculated. Shannon indices were compared using Hutcheson's t-test, and the remaining parameters were analyzed by ANOVA. Linear edges exerted a high impact on the floristic composition, diversity, and abundance of species, though little interference was observed in the structure of the community, since phytosociological parameters and the proportions of successional categories did not differ between the edge and inner forest fragment. The impact of linear infrastructure was similar to that of other border types. Additionally, even though the distance between forest fragments was very short, an edge effect was observed, which underlines the importance of linear forest edges to biodiversity conservation

The influence of El Niño and edge effects on the reproductive phenology and floral visitors of Eschweilera tetrapetala Mori (Lecythidaceae), an endemic species of the Atlantic Forest of northeastern Brazil

<div><p>ABSTRACT We compared the reproductive phenology and floral visitors of Eschweilera tetrapetala growing along the edge and in the interior of a submontane forest in the Chapada Diamantina mountains, Bahia State, Brazil. We sought to determine if there were inter-annual differences in intensity and seasonality associated with environmental conditions, and if there were differences in floral visitors between the two environmental contexts. Phenological observations were performed for three years, and included the occurrence of an El Niño event. We applied circular statistics to detect seasonal trends, performed cross correlations between phenophases and climate, Kruskal-Wallis and Wilcoxon signed-rank tests for inter-annual variation, and the Wilcoxon-Mann-Whitney test for edge-interior differences in the species richness of floral visitors. We observed inter-annual variations in the intensity and seasonality of flower production that accompanied variations in rainfall, possibly associated with El Niño events. Floral visitor richness differed between the forest edge and interior, with seven species recorded for the interior and only one for the edge. Reduced fruit set was also observed at the forest edge. This study contributes to our understanding of the influence of El Niño and edge effects on the reproductive phenologies of tropical plants.</p></div

Isotopic composition of leaf carbon (delta C-13) and nitrogen (delta N-15) of deciduous and evergreen understorey trees in two tropical Brazilian Atlantic forests

Abstract:Isotopic composition of leaf carbon (δ13C) and nitrogen (δ15N) is determined by biotic and abiotic factors. In order to determine the influence of leaf habit and site on leaf δ13C and δ15N in the understorey of two Atlantic forests in Brazil that differ in annual precipitation (1200 and 1900 mm), we measured these isotopes in the shaded understorey of 38 tropical tree species (20 in the 1200-mm site and 18 in the 1900-mm site). Mean site values for δ15N were significantly lower at the 1200-mm site (−1.4‰) compared with the 1900-mm site (+3.0‰), and δ13C was significantly greater in the 1200-mm site (−30.4‰) than in the 1900-mm site (−31.6‰). Leaf C concentration was greater and leaf N concentration was lower at 1200-mm than at 1900-mm. Leaf δ15N was negatively correlated with δ13C across the two sites. Leaf δ13C and δ15N of evergreen and deciduous species were not significantly different within a site. No significant phylogenetic signal for any traits among the study species was found. Overall, site differences were the main factor distinguishing traits among species, suggesting strong functional convergence to local climate and soils within each site for individuals in the shaded understorey

Relatório Técnico-Científico Final: Enfrentamento da pandemia de COVID-19: produções, invenções e desafios na gestão do cuidado em rede.

Relatório final de projeto de pesquisa: Enfrentamento da pandemia de COVID-19: produções, invenções e desafios na gestão do cuidado em rede. Pesquisador responsável: Ademar Arthur Chioro dos Reis Instituição Sede: Universidade Federal de São Paulo (Unifesp) Processo FAPESP: 2020/12096-6 - Modalidade: Auxílio a Projeto de Pesquisa Linha de fomento: Acordos de Cooperação / PPSUS 2015 – PPSUS 2020 – PPP Período da Vigência: 01/03/2021 a 28/02/2023 (12 meses) Período coberto pelo Relatório Técnico-Científico Final: 28/02/2022 a 28/02/2023 (12 meses)Relatório final de projeto de pesquisa: Enfrentamento da pandemia de COVID-19: produções, invenções e desafios na gestão do cuidado em rede. Pesquisador responsável: Ademar Arthur Chioro dos Reis Instituição Sede: Universidade Federal de São Paulo (Unifesp) Processo FAPESP: 2020/12096-6 - Modalidade: Auxílio a Projeto de Pesquisa Linha de fomento: Acordos de Cooperação / PPSUS 2015 – PPSUS 2020 – PPP Período da Vigência: 01/03/2021 a 28/02/2023 (12 meses) Período coberto pelo Relatório Técnico-Científico Final: 28/02/2022 a 28/02/2023 (12 meses)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)2020/12096-

Objetos de ensino e o patrimônio cultural de ciência e tecnologia no Brasil e em Portugal: contribuições sobre levantamentos e inventários como instrumentos de preservação em escolas de ensino médio

RESUMO O trabalho faz reflexões sobre o patrimônio cultural no âmbito das escolas de ensino médio, analisando algumas iniciativas de levantamentos e de valoração dos objetos de ensino enquanto bens culturais. Para tanto, buscamos traçar um perfil analítico de projetos de inventário desse patrimônio cultural no Brasil e em Portugal. A partir das lentes da ciência e tecnologia, utilizou-se a revisão bibliográfica e os contatos com as instituições como metodologia para comparar o estado de pesquisas de inventário sobre estes objetos. Observou-se que as iniciativas aqui estudadas são assimétricas, necessitando ser padronizadas e aprofundadas de forma a alcançar as diferentes modalidades de ensino e, consequentemente, obter resultados mais consistentes e efetivos do ponto de vista da preservação. No entanto, percebe-se que existe um movimento crescente de identificação e preservação desses artefatos nos dois países