21 research outputs found

    The Relative Impact of Climate Change on the Extinction Risk of Tree Species in the Montane Tropical Andes.

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    There are widespread concerns that anthropogenic climate change will become a major cause of global biodiversity loss. However, the potential impact of climate change on the extinction risk of species remains poorly understood, particularly in comparison to other current threats. The objective of this research was to examine the relative impact of climate change on extinction risk of upper montane tree species in the tropical Andes, an area of high biodiversity value that is particularly vulnerable to climate change impacts. The extinction risk of 129 tree species endemic to the region was evaluated according to the IUCN Red List criteria, both with and without the potential impacts of climate change. Evaluations were supported by development of species distribution models, using three methods (generalized additive models, recursive partitioning, and support vector machines), all of which produced similarly high AUC values when averaged across all species evaluated (0.82, 0.86, and 0.88, respectively). Inclusion of climate change increased the risk of extinction of 18-20% of the tree species evaluated, depending on the climate scenario. The relative impact of climate change was further illustrated by calculating the Red List Index, an indicator that shows changes in the overall extinction risk of sets of species over time. A 15% decline in the Red List Index was obtained when climate change was included in this evaluation. While these results suggest that climate change represents a significant threat to tree species in the tropical Andes, they contradict previous suggestions that climate change will become the most important cause of biodiversity loss in coming decades. Conservation strategies should therefore focus on addressing the multiple threatening processes currently affecting biodiversity, rather than focusing primarily on potential climate change impacts

    The use of scenarios and models to evaluate the future of nature values and ecosystem services in Mediterranean forests

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    Science and society are increasingly interested in predicting the effects of global change and socio-economic development on natural systems, to ensure maintenance of both ecosystems and human well-being. The Intergovernmental Platform on Biodiversity and Ecosystem Services has identified the combination of ecological modelling and scenario forecasting as key to improving our understanding of those effects, by evaluating the relationships and feedbacks between direct and indirect drivers of change, biodiversity, and ecosystem services. Using as case study the forests of the Mediterranean basin (complex socio-ecological systems of high social and conservation value), we reviewed the literature to assess (1) what are the modelling approaches most commonly used to predict the condition and trends of biodiversity and ecosystem services under future scenarios of global change, (2) what are the drivers of change considered in future scenarios and at what scales, and (3) what are the nature and ecosystem service indicators most commonly evaluated. Our review shows that forecasting studies make relatively little use of modelling approaches accounting for actual ecological processes and feedbacks between different socio-ecological sectors; predictions are generally made on the basis of a single (mainly climate) or a few drivers of change. In general, there is a bias in the set of nature and ecosystem service indicators assessed. In particular, cultural services and human well-being are greatly underrepresented in the literature. We argue that these shortfalls hamper our capacity to make the best use of predictive tools to inform decision-making in the context of global change.This work was supported by the Spanish Government through the INMODES project (grant number CGL2017-89999-C2-2-R), the ERA-NET FORESTERRA project INFORMED (grant number 29183), and the project Boscos Sans per a una Societat Saludable funded by Obra Social la Caixa (https://obrasociallacaixa.org/). AMO and AA were supported by Spanish Government through the “Juan de la Cierva” fellowship program (IJCI-2016-30349 and IJCI-2016-30049, respectively). JVRD was supported by the Government of Asturias and the FP7-Marie Curie-COFUND program of the European Commission (Grant “Clarín” ACA17-02)

    Fear of Being Exposed:The Trait-Relatedness of the Impostor Phenomenon and its Relevance in the Work Context

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    Purpose – The Impostor Phenomenon (IP) refers to the intense feelings of intellectual fraudulence, often experienced by high achieving individuals. The purpose of this study is threefold: (1) examine the trait-relatedness of the IP; (2) investigate the potential impact of impostor tendencies on relevant work attitudes (i.e., job satisfaction and organizational commitment) and organizational citizenship behavior (OCB); and (3) explore whether workplace social support can buffer the potential harmful effects of impostor tendencies. Design/methodology/approach – Belgian employees (N=201) from three different sectors participated in a cross-sectional survey study. Findings – Hierarchical regressions revealed that Big Five personality traits, core self-evaluations, and maladaptive perfectionism explain large proportions of the variance in impostor tendencies (∆RÂČ=.59). A relative weight analysis indicated self-efficacy as the most important predictor, followed by maladaptive perfectionism and Neuroticism. Further, results showed that employees with stronger impostor tendencies indicate lower levels of job satisfaction and OCB, and higher levels of continuance commitment. However, workplace social support buffered the negative effects of impostor tendencies on job satisfaction and OCB. Implications – Employees hampered by impostor tendencies could benefit from coaching programs that focus on the enhancement of self-efficacy and the alleviation of maladaptive perfectionistic concerns. Impostor tendencies have an impact on career attitudes and organizational behavior. Extra attention could be devoted to the assessment of this specific trait constellation in selection or development contexts. Interventions designed to increase social support are particularly relevant in this regard. Originality/value – Despite its relevance for contemporary work settings, the IP has barely been investigated in adult working samples
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