A5036312532- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Horticultural and Viticultural Research
- Tree-ring climate responses
- Remote Sensing and LiDAR Applications
- Fire effects on ecosystems
- Ecology and Vegetation Dynamics Studies
- Tree Root and Stability Studies
- Soil Carbon and Nitrogen Dynamics
- Forest Ecology and Biodiversity Studies
- Hydrology and Watershed Management Studies
- Plant responses to elevated CO2
- Forest Insect Ecology and Management
- Forest Management and Policy
- Remote Sensing in Agriculture
- Soil and Unsaturated Flow
- Agroforestry and silvopastoral systems
- Insect-Plant Interactions and Control
- Hemiptera Insect Studies
- Environmental and biological studies
- Botany and Plant Ecology Studies
- Agricultural and Food Sciences
- 3D Surveying and Cultural Heritage
- Plant and Fungal Interactions Research
- Mycorrhizal Fungi and Plant Interactions
University of Lisbon
2012-2022
Instituto Nacional de Investigação Agrária e Veterinária
2022
Semi-arid ecosystems contribute about 40% to global net primary production (GPP) even though water is a major factor limiting carbon uptake. Evapotranspiration (ET) accounts for up 95% of the loss and in addition, vegetation can also mitigate drought effects by altering soil distribution. Hence, partitioning fluxes between components crucial gain mechanistic understanding on cycling. However, possible impact herbaceous savanna type often overlooked. Therefore, we aimed at quantifying...
Aim of study: The study aims to analyse the potential use low‑cost unmanned aerial vehicle (UAV) imagery for estimation Pinus pinea L. variables at individual tree level (position, height and crown diameter).Area This was conducted under PINEA project focused on 16 ha umbrella pine afforestation (Portugal) subjected different treatments.Material methods: workflow involved: a) image acquisition with consumer‑grade cameras board an UAV; b) orthomosaic digital surface model (DSM) generation...
This study aims to estimate the total biomass aboveground and soil carbon stocks in a Mediterranean riparian forest identify contribution of different species ecosystem compartments overall reservoir. We used combined field object-based image analysis (OBIA) approach, based on unmanned aerial vehicle (UAV) multispectral imagery, assess C stock three dominant species. A linear discriminator was designed, set spectral variables previously selected an optimal way, permitting classification...
Forests play an important role in the global carbon balance because they offset a large portion of dioxide emitted through human activities. Accurate estimates are necessary for national reporting greenhouse gas inventories, credit trading and forest management but Portugal reliable accessible measurement methodologies still lacking some species. The objective this study was to provide managers with comprehensive database factors equations that allows estimating stand-level stocks Pinus...
Abstract. Savannah-type ecosystems account for 26–30% of global gross primary productivity GPP, with water being one the major driving factors. In Europe, savannah-type woodlands cover an area about 1.5 million ha. Here, recent past has shown a significant decrease in precipitation P winter and spring as well total annual precipitation. Strong effects on local balance carbon sink strength have thus been reported due to changes regime. The objective this study is quantify impact extreme...
Abstract Questions How do semi‐deciduous and evergreen shrubs exploit environmental resources during summer drought? What is the contribution of understorey shrubby layer to ecosystem carbon assimilation? To what extent are balance transpiration impacted by a rain pulse? Location Cork oak open woodland in M editerranean region. Methods We used closed dynamic light dark chambers measure gas exchange ( CO 2 H O ) dominant shrub species C istus salviifolius , crispus (semi‐deciduous) U lex...
Cork oak woodlands (montado) are agroforestry systems distributed all over the Mediterranean basin with a very important social, economic and ecological value. A generalized cork decline has been occurring in last decades jeopardizing its future sustainability. It is unknown how loss of tree cover affects microbial processes that consuming greenhouse gas fluxes montado ecosystem. The study was conducted under two different conditions natural understory woodland center Portugal: canopy (UC)...
Abstract. Savannah-type ecosystems account for 26–30% of global gross primary productivity GPP with water being one the major driving factors. In Europe, savannah-type woodlands cover an area about 1.5 million ha. Here, recent past has shown a significant decrease precipitation P in winter and spring as well total annual precipitation. Strong effects on local balance carbon sink strength have thus been reported due to changes regime. The objective this study is quantify impact extreme...
Portuguese cork oak (Quercus suber L.) extended mortality and lack of regeneration have been the drivers important changes in traditional woodlands (savanna-like) montado. The decrease tree cover fosters mixture with stone pine (Pinus pinea for pine-nut production providing shelter regeneration. use nurse species, namely pines, to help Quercus spp. is known, but whether could be favoured by remains a question. A pot experiment (Qs) (Pp) growing inter-(Qs×Pp) intraspecific mixtures (Qs×Qs,...