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The aim of social marketing is to influence a voluntary behavior of the target audience in order to improve their personal and the society’s well-being, seeking to search the root of a social problem, identifying the reason for change resistance. Therefore, it has been used in campaigns by the government showing to be effective in the minimization of health problems. Specifically about organ donation, it is not the lack of infrastructure itself, but the family declination of donation being the main reason for which an organ is not donated today in Brazil. Thus, this study aims to identify the factors influencing the family to donate the organs of their relatives and how social marketing can influence the decision. A field study was applied as a research method, with semi-structured interviews. Twenty-six interviews were conducted using the snowball technique. Results indicate that the vast majority would deny organ donation only if it was the deceased's will, on the other hand the results show that this is not a family subject matter. Respondents stated that more frequent media campaigns aiming to raise awareness of organ donation would be an effective measure to increase the number of organ donations.

The little layer of tree plantations provides primary nutrients for uptake, buffers changes in soil moisture, and provides habitat and substrate to soil epigeic fauna. However, this layer in eucalypt plantations is often removed to reduce fuel load during the fire season in the Brazilian savanna (Cerrado). Therefore, it is necessary to quantify the effects of changes in litter dynamics on the function of these plantations, on key nutrient cycling processes and on epigeic fauna diversity and abundance. In two adjacent stands (one juvenile and one mature), the consequences of two years of litter removal were quantified as monthly litterfall, leaf and fine wood litter decomposition, epigeic fauna abundance and diversity, soil biogeochemical variables, and tree diameter and basal area increments. Monthly litterfall rates in juvenile and mature stands did not change with litter removal over the study period. Annual litterfall ranged from 4.1 to 4.9 Mg ha−1a−1 in litter removal plots and from 3.9 to 4.8 Mg ha−1a−1 in control plots. Fine wood litter decomposition was slower in litter removal plots compared to controls, while leaf decomposition rates were similar in both. Two years of litter removal in the juvenile stand did not affect topsoil biogeochemical parameters but decreased available phosphorus at 20–40 cm depth relative to controls. In the mature stand, total cation exchange capacity (0–20 cm) was higher in controls (6.4 cmolc dm−3) relative to litter removal plots (6.3 cmolc dm−3), while soil moisture (0–40 cm depth) was lower in litter removal (25.45 m3 m−3) compared to control plots (26 m3 m−3) in the dry season. A non-metric multidimensional scaling ordination revealed an increased homogeneity in epigeic fauna where litter was removed. Litterfall, decomposition, diameter increment, four soil physical parameters and fourteen chemical parameters at 0–20 and 20–40 cm depth explained the differences in soil epigeic fauna composition between litter removal and control plots. Diameter increment decreased with litter removal only in the juvenile stand, which had reached its growth peak. The results indicate that removing excess litter to decrease fuel volume can alter soil biodiversity and edaphic conditions that negatively affect nutrient cycling and tree growth.

Conserving the remaining savanna ecosystems in the Brazilian savanna (Cerrado) — a global biodiversity hotspot that stores carbon and provides water to a large portion of South America — requires understanding the ecological processes maintaining their function. Nutrient cycling supports savanna function via plant litter production and decomposition by soil fauna, releasing nutrients for plant and soil organism uptake. Soil biodiversity and biogeochemistry linkages with litter dynamics in Neotropical savannas under a changing climate are poorly understood. Here, we combined two years of rainfall seasonality, leaf and wood litter production and decomposition with soil epigeic fauna abundance — the number of ground-surface dwelling invertebrates collected through pitfall traps — taxa richness, Shannon's diversity and Pielou's evenness, and 16 soil biogeochemical variables measured in 12 plots of preserved savanna. Rainfall seasonality modulated the mean soil epigeic fauna diversity and evenness across all plots, which were highest in the rainy season, in contrast to litterfall rates, which peaked in the dry season. In the dry season (April to September), the Formicidae family was the most abundant with 50% of all individuals, while in the rainy season (October to March), the Isoptera order was the most abundant with approximately 39% of individuals. Wood litter decomposition grouped with annual Hemiptera abundance, co-varying with soil epigeic fauna diversity and evenness per plot and against soil fertility variables. Leaf litter decomposition co-varied with the total epigeic fauna abundance and soil pH. We speculate that the specific need to decompose wood litter may be associated with a greater need for diversity than an abundance of soil epigeic fauna. Our work highlights the role of rainfall seasonality on soil biodiversity and physicochemistry, which is also tightly linked with litter production and decomposition. This study advances our understanding of the mechanisms governing nutrient cycling in savanna ecosystems on nutrient-impoverished soils, with implications for achieving sustainable conservation and restoration goals.

Discussing substance abuse, licit or not, requires dynamism when it comes to adolescents. Games are a powerful tool to bring the subject up for discussion. Here we describe a collaborative board game designed to address this subject using current neuroscience knowledge about neurophysiology of (drug) addiction. The game highlights the action of 22 neuroactive drugs, classified into the following groups: (1) depressants; (2) hallucinogens; (3) stimulants and (4) others (anabolic steroids and prescription drugs). In addition, the game was developed to approach specific neuroscience-related themes such as: (1) brain structures (e.g. lobes); (2) cell types present in the nervous system; (3) neurotransmitter actions; (4) impact of drug abuse on the nervous system function; (5) the concept of overdose. Moreover, the game has got an educational proposal that combines the individual and social aspects of development, addressing concepts of neurosciences in a playful and stimulating way, aiming to promote not only awareness regarding the abuse of chemical substances, but also to stimulate the social development of the participants at the same time. It is worth mentioning that drug cards also bring curiosities and cultural trivia, including music and art, making it more attractive for young audiences.