Evaluating the legacy of landscape history: extinction debt and species credit in bird and small mammal assemblages in the Brazilian Atlantic Forest

There is now an extensive literature on extinction debt following deforestation. However, the potential for species credit in landscapes that have experienced a change from decreasing to expanding forest cover has received little attention. Both delayed responses should depend on current landscape forest cover and on species life-history traits, such as longevity, as short-lived species are likely to respond faster than long-lived species. We evaluated the effects of historical and present-day local forest cover on two vertebrate groups with different longevities understorey birds and non-flying small mammals - in forest patches at three Atlantic Forest landscapes. Our work investigated how the probability of extinction debt and species credit varies (i) amongst landscapes with different proportions of forest cover and distinct trajectories of forest cover change, and (ii) between taxa with different life spans. Our results suggest that the existence of extinction debt and species credit, as well as the potential for their future payment and/or receipt, is not only related to forest cover trajectory but also to the amount of remaining forest cover at the landscape scale. Moreover, differences in bird and small mammal life spans seem to be insufficient to affect differently their probability of showing time-delayed responses to landscape change. Synthesis and applications. Our work highlights the need for considering not only the trajectory of deforestation/regeneration but also the amount of forest cover at landscape scale when investigating time-delayed responses to landscape change. As many landscapes are experiencing a change from decreasing to expanding forest cover, understanding the association of extinction and immigration processes, as well as their interactions with the landscape dynamic, is a key factor to plan conservation and restoration actions in human-altered landscapes.

Water transfer from São Francisco river to semiarid northeast of Brazil: technical data, environmental impacts, survey of opinion about the amount to be transferred

The transposition of the São Francisco River is considered one of the greatest engineering works in Brazil of all time since it will cross an extensive agricultural region of continental dimensions, involving environmental impacts, water, soil, irrigation, water payment and other multidisciplinary themes. Taking into account its importance, this subject was incorporated into a discipline of UFSCar (Federal University of São Carlos - Brazil) named "Pollution and Environmental Impacts". It was noted strong reaction against the project, even before the presentation. To allow a critical analysis, the first objective was to compile the main technical data and environmental impacts. The second objective was to detect the three most important aspects that cause reaction, concluding for the following reasons: assumption that the volume of water to be transferred was much greater than it actually is proposed in the project; lack of knowledge about similar project already done in Brazil; the idea that the artificial canal to be built was much broader than that proposed by the project. The participants' opinion about "volume to be transferred" was raised quantitatively four times: 2-undergraduate students; 1-graduate; 1-outside community. The average resulted 14 times larger than that proposed in the project, significant according to t-test. It was concluded that the reaction to water transfer project is due in part to the ignorance combined with a preconceived idea that tend to overestimate the magnitude of environmental impacts.

Percepção do médico sobre pagamento por desempenho no gerenciamento de doenças cardiovasculares: o caso de uma operadora de plano de saúde

Desde os anos 50, os fatores de risco para as doenças cardiovasculares passaram a ser valorizados. O gerenciamento de doenças cardiovasculares (PGC) busca a construção da autonomia e melhoria da qualidade de vida dos pacientes. Em alguns países, para alcançar esses objetivos, tem sido apontada a utilização de programas de pagamento por desempenho (PPP) aos médicos como um dos elementos de melhoria nos processos e nos resultados dos pacientes e na condição de remuneração. O objetivo deste estudo é analisar o ponto de vista dos médicos sobre a implantação dos pagamentos por desempenho vinculados ao PGC em uma operadora de plano de saúde. Trata-se de investigação de caráter qualitativo, do tipo estudo de caso, apresentando entrevistas semiestruturadas com médicos participantes ou não do PGC, em setembro de 2009, tendo como referência as ações implantadas em 2008. Foram entrevistados 23 médicos (14 homens e 09 mulheres). Como resultado foi observado que o incentivo financeiro é reconhecido pelos médicos como importante, mas não determinante da inclusão de pacientes no PGC. O principal motivo apresentado foi a organização do cuidado, no qual o paciente é mais bem acompanhado e controlado, e o trabalho médico, avaliado segundo parâmetros preestabelecidos. O PGC e o PPP têm potencial de transformação do cuidado em saúde. O trabalho multidisciplinar e a maior produtividade nos atendimentos no consultório foram os principais efeitos positivos identificados. Outros estudos são necessários para acompanhar a evolução e os efeitos do pagamento por desempenho no trabalho médico.