Encontros Scientia

The response of plant functional traits to climate in Mediterranean drylands: contribution to restoration and combat of desertification

Sala 2.2.14, FCUL, Lisboa

Por Alice Nunes (Post-Doc Researcher: eChanges - Research Group).

Climate change models forecast an overall increase in aridity in drylands in the near future. Drier conditions are expected to increase the vulnerability of drylands to desertification and land degradation, hampering ecosystems’ functioning, and the delivery of ecosystem services. Hence, it is crucial to understand and predict the consequences of climate change for dryland ecosystems. Functional traits determine species’ responses to environment, and their influence on ecosystem processes, thus providing a mechanistic tool to monitor ecosystems’ response to climate. To understand potential impacts of climate change on Mediterranean drylands, we modelled the response of plant functional traits to climate in Holm-oak woodlands, using a spatial climatic gradient to predict changes over time. In addition, we aimed at using this trait-based information to contribute to the improvement of land management strategies and restoration tools to mitigate desertification and land degradation in these areas. We identified nine plant traits responding to aridity along space, and validated that response over time. Increasing aridity was associated to a lower functional diversity for most traits. Inter-annual climatic fluctuations greatly affected functional trait community metrics, and functional diversity showed a similar response in space and over time to climatic limitations. Multi-trait functional diversity decreased non-linearly with aridity and responded in a more predictable way to aridity than species diversity. Thus, it can be used as an indicator to map areas at risk of desertification. We also explored the relative effect of climate, topography and soil characteristics on plant communities’ functional traits. We found that topoedaphic factors largely determine shrub encroachment, suggesting that climate change will not have a strong impact on shrub encroachment in Mediterranean drylands. We discuss land management strategies to deal with shrub encroachment in light of this result. Finally, we provide a comprehensive overview of the current restoration practice in Mediterranean drylands, showing that trait-based ecology is still poorly used in practice, particularly in restoration monitoring, where it could be a useful indicator of ecosystems functional recovery. Our findings contribute to a better prediction of climate change effects on Mediterranean drylands, and to optimize land management and restoration strategies to mitigate land degradation in these areas.

12h00-13h00
cE3c - Centro de Ecologia, Evolução e Alterações Ambientais

05 de junho: uma data especial para Ciências ULisboa, pois o ambiente está no centro das preocupações da comunidade da nossa Escola.

Speaker: Lucio Boccardo (Università di Roma La Sapienza).

To get access to the password, please register on the website or contact one of the organizers.

Objectives: provide students with statistical knowledge and tools to manipulate, analyze and visualize biological data with R. Introduction to modeling, simulations and Bayesian statistics.

Apresentações de João Cordovil (Centro de Filosofia das Ciências da Universidade de Lisboa / Ciências ULisboa) e Diana Barbosa (Comcept - Comunidade Céptica Portuguesa).

The Sustainable Energy Week, organised by the European Commission each year in June, will be organised as an online event this year on 23 to 25 June, under the theme "Beyond the crisis: clean energy for green recovery and growth".

Face à emergência da pandemia da COVID-19, a 6.ª edição da Escola de Verão de Energia da Faculdade de Ciências da ULisboa, prevista para 6 a 10 de julho de 2020, será adiada para data a definir em 2021.

Cancelamento motivado pela aplicação do plano de contingência da Faculdade de Ciências da Universidade de Lisboa, na sequência das orientações da Direção-Geral de Saúde e das recomendações por parte da Reitoria da Universidade de Lisboa, relativamente ao novo Coronavírus (CO

Candidaturas a decorrer até ao dia 15 de julho de 2020.

IN3+  | Um Milhão para a Inovação.

O prémio IN3+ destina-se a todos os investigadores pertencentes às entidades que integram a Rede Inovação INCM.

Cancelamento motivado pela aplicação do plano de contingência da Faculdade de Ciências da Universidade de Lisboa, na sequência das orientações da Direção-Geral de Saúde e das recomendações por parte da Reitoria da Universidade de Lisboa, relativamente ao novo Coronavírus (COVID-1

New date: September 14th-16th, 2020.

Ciências ULisboa associa-se ao maior evento mundial sobre inovação para a sustentabilidade - “The Planetiers World Gathering” - que terá lugar no Altice Arena entre 21 e 23 de outubro de 2020, sob os auspícios da

Programa de Formação Contínua de Professores do Ensino Básico (3.º ciclo) e Secundário, grupos 420 e 520.

Overview: Currently, climate changes or alterations are known to be reflected on the stable isotope ratios of Hydrogen, Nitrogen, Carbon, Oxygen and Sulphur present in atmospheric gas forms, fresh or ocean water, as well as in plants and animals and organi

New date: 30 August - 03 September 2021.

This conference is the 22nd in the series of triennial conferences which bring together the Particle and Nuclear Physics communities.