Recursos de colección

UTL Repository Universidade Técnica de Lisboa (37.000 recursos)

O Repositório Institucional da Universidade Técnica de Lisboa desenvolvido no âmbito do projecto RCAAP. Este repositório destina-se a recolher, preservar e disponibilizar o acesso às publicações científicas e didácticas de seis: Escolas da UTL: Faculdade de Medicina Veterinária, Instituto Superior de Agronomia, Instituto Superior de Economia e Gestão, Instituto Superior de Ciências Sociais e Políticas , Faculdade de Motricidade Humana, Faculdade de Arquitectura. O Instituto Superior Técnico, igualmente Escola Da UTL, tem repositório independente.

DEF - Departamento de Engenharia Florestal

Mostrando recursos 1 - 20 de 131

  1. Agroforestry as sustainable land use. Proceedings of the 4th European Agroforestry Conference

    The book is plenty of extraordinary information and experiences about agroforestry practices and systems around the world including Africa, America and Europe. Silvopastoralism is the most relevant agroforestry practice shown in the book, but also silvoarable or alley cropping practices become important. Sessions and topics deal with the enhancement of productivity of both the woody perennial and the lower storey component of the agroforestry practice trying to cope with an increasing primary sector products demanded by the world, but also highlighting the importance of the ecosystem services delivery and considering the fulfillment of the United Nations Sustainable Development Goals. The importance of agroforestry as one of the best...

  2. Chemical composition of barks from Quercus faginea trees and characterization of their lipophilic and polar extracts

    Ferreira, Joana P.A.; Miranda, Isabel; Sousa, Vicelina B.; Pereira, Helena
    The bark from Quercus faginea mature trees from two sites was chemically characterized for the first time. The barks showed the following composition: ash 14.6%, total extractives 13.2%, suberin 2.9% and lignin 28.2%. The polysaccharides were composed mainly of glucose and xylose (50.3% and 35.1% of all monosaccharides respectively) with 4.8% of uronic acids. The suberin composition was: ω-hydroxyacids 46.3% of total compounds, ɑ,ω-alkanoic diacids 22.3%, alkanoic acids 5.9%, alkanols 6.7% and aromatics 6.9% (ferulic acid 4.0%). Polar extracts (ethanol-water) had a high phenolic content of 630.3 mg of gallic acid equivalents (GAE)/g of extract, condensed tannins 220.7 mg of catechin equivalents (CE)/g extract, and...

  3. Volatile diterpene emission by two Mediterranean Cistaceae shrubs

    Yáñez-Serrano, A.M.; Fasbender, L.; Kreuzwieser, J.; Dubbert, D.; Haberstroh, S.; Lobo-do-Vale, R.; Caldeira, M.C.; Werner, C.
    Mediterranean vegetation emits a wide range of biogenic volatile organic compounds (BVOCs) among which isoprenoids present quantitatively the most important compound class. Here, we investigated the isoprenoid emission from two Mediterranean Cistaceae shrubs, Halimium halimifolium and Cistus ladanifer, under controlled and natural conditions, respectively. For the first time, diurnal emission patterns of the diterpene kaurene were detected in real-time by Proton-Transfer-Reaction-Timeof- Flight-Mass-Spectrometer. Kaurene emissions were strongly variable among H. halimifolium plants, ranging from 0.01 ± 0.003 to 0.06 ± 0.01 nmol m−2 s−1 in low and high emitting individuals, respectively. They were in the same order of magnitude as monoterpene (0.01 ± 0.01 to 0.11 ± 0.04 nmol...

  4. Modelling agroforestry systems with Web-EcoYieldSAFE

    Palma, J.H.N.; Tomás, A.

  5. Comparison of observed data and high-resolution regional climate simulations on process based modelling

    Palma, J.H.N.; Cardoso, R.M.; Soares, P.M.M.; Oliveira, T.S.; Tomé, M.

  6. Juvenile wood characterization of Eucalyptus botryoides and E. maculata by using SilviScan

    Knapic, Sofia; Grahn, Thomas; Lundqvist, Sven-Olof; Pereira, Helena

  7. How does season affect passage performance and fatigue of Potamodromous Cyprinids ? An experimental approach in a vertical slot fishway

    Romão, Filipe; Santos, José M.; Katopodis, Christos; Pinheiro, António N.; Branco, Paulo
    Most fishway studies are conducted during the reproductive period, yet uncertainty remains on whether results may be biased if the same studies were performed outside of the migration season. The present study assessed fish passage performance of a potamodromous cyprinid, the Iberian barbel (Luciobarbus bocagei), in an experimental full-scale vertical slot fishway during spring (reproductive season) and early-autumn (non-reproductive season). Results revealed that no significant differences were detected on passage performance metrics, except for entry efficiency. However, differences between seasons were noted in the plasma lactate concentration (higher in early-autumn), used as a proxy for muscular fatigue after the fishway navigation. This suggests that, for potamodromous cyprinids, the...

  8. Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling

    Ochs, Konstantin; Rivaes, Rui P.; Ferreira, Teresa; Egger, Gregory
    Original Research

  9. Advancing towards functional environmental flows for temperate floodplain rivers

    Hayes, Daniel S.; Brandle, Julia M.; Seliger, Carina; Zeiringer, Bernhard; Ferreira, Teresa; Schmutz, Stefan
    Abstraction, diversion, and storage of flow alter rivers worldwide. In this context,minimumflow regulations are applied to mitigate adverse impacts and to protect affected river reaches from environmental deterioration. Mostly, however, only selected instreamcriteria are considered, neglecting the floodplain as an indispensable part of the fluvial ecosystem. Based on essential functions and processes of unimpaired temperate floodplain rivers, we identify fundamental principles towhich we must adhere to determine truly ecologically-relevant environmental flows. Literature reveals that the natural flow regime and its seasonal components are primary drivers for functions and processes of abiotic and biotic elements such as morphology, water quality, floodplain, groundwater, riparian vegetation, fish, macroinvertebrates, and amphibians,...

  10. Identification of agroforestry systems and practices to model

    Palma, J.H.N.; Graves, Anil; Crous-Duran, Josep; Paulo, Joana Amaral; Upson, Matthew; Dupraz, Christian; Gosme, Marie; Lecomte, Isabelle; Touhami, Haythem Ben; Mézière, Delphine; Burgess, Paul
    This report is an output from work-package 6 which contributes to the third objective. Work-package 6 focuses on the field- and farm-scale evaluation of innovation research that have arisen from about 40 agroforestry stakeholder groups created across Europe. Some research, for example tree protection options, are best determined by technical evaluations in the field. However some research questions require a modelling approach to predict, for example, the financial and economic impact of a new practice over a number of years. This report seeks to identify those agroforestry systems and practices which could be usefully assessed using biophysical agroforestry models such...

  11. CliPick: Project database of Pan-European simulated climate data for default model use

    Palma, J.H.N.

  12. Predicting site index from climate and soil variables for cork oak (Quercus suber L.) stands in Portugal

    Paulo, Joana Amaral; Palma, J.H.N.; Gomes, Alberto A.; Faias, Sónia Pacheco; Tomé, Margarida
    Comunicação Oral

  13. Um nome diferente para mais uma base de dados ?

    Palma, J.H.N.

  14. 1 st RAIN Meeting Report - Portugal

    Paulo, Joana Amaral; Palma, J.H.N.; Almeida, Raquel P.
    The final objective of the present document is to report on the first Portuguese RAIN meeting, which took place in Observatório do Sobreiro e da Cortiça, Coruche Municipality, on the 12th of September 2017

  15. Relatório da 2ª Reunião - Projeto Redes de Inovação Agroflorestal (AFINET)


  16. Relatório da 1ª Reunião - Projeto Redes de Inovação agroflorestal (AFINET) - Apresentação


  17. Bark anatomy, chemical composition and ethanol-water extract composition of Anadenanthera peregrina and Anadenanthera colubrina

    Mota, Graciene S.; Sartori, Caroline J.; Miranda, Isabel; Quilhó, Teresa; Mori, Fábio Akira; Pereira, Helena
    The bark of Anadenanthera peregrina (L.) Speg and Anadenanthera colubrina (Vell.) Brenan were characterized in relation to anatomical and chemical features. The barks were similar and included a thin conducting phloem, a largely dilated and sclerified non-conducting phloem, and a rhyridome with periderms with thin phellem interspersed by cortical tissues. Only small differences between species were observed that cannot be used alone for taxonomic purposes. The summative chemical composition of A. peregrina and A. colubrina was respectively: 8.2% and 7.7% ash; 28.8% and 29.3% extractives; 2.4% and 2.6% suberin; and 18.9% lignin. The monosaccharide composition showed the predominance of glucose (on average 82% of total neutral sugars) and...

  18. Green spaces are not all the same for the provision of air purification and climate regulationservices: the case of urban parks

    Vieira, Joana; Matos, Paula; Mexia, Teresa; Silva, Patrícia; Lopes, Nuno; Freitas, Catarina; Correia, Otília; Santos-Reis, Margarida; Branquinho, Cristina; Pinho, Pedro
    The growing human population concentrated in urban areas lead to the increase of road traffic and artificial areas, consequently enhancing air pollution and urban heat island effects, among others. These environmental changes affect citizen's health, causing a high number of premature deaths, with considerable social and economic costs. Nature-based solutions are essential to ameliorate those impacts in urban areas. While the mere presence of urban green spaces is pointed as an overarching solution, the relative importance of specific vegetation structure, composition and management to improve the ecosystem services of air purification and climate regulation are overlooked. This avoids the establishment of optimized planning and management procedures...

  19. Variation of ring width and wood density in two unmanaged stands of the Mediterranean oak Quercus faginea

    Sousa, Vicelina B.; Louzada, José Luís; Pereira, Helena
    Ring width and wood density variation were studied from pith-to-bark and along the stem in two naturally regenerated stands of Quercus faginea Lam. in Portugal. Ring width was significantly different between sites, in both heartwood and sapwood rings, ranging from 1.83 mm to 2.52 mm and from 0.77 mm to 2.11 mm, respectively. Wood density was significantly different between sites only in the heartwood, i.e., 914 kg m??3 and 1037 kg m??3. Site effects were the main source of variation for ring width and wood density within the heartwood as well as for sapwood ring width, while the between-tree effects explained more the density variation within...

  20. Lessons learnt: montados in Portugal

    Faias, Sónia Pacheco; Firmino, Paulo; Tomé, Margarida; Palma, J.H.N.; Paulo, Joana Amaral
    The AGFORWARD research project (January 2014 - December 2017), funded by the European Commission, is promoting agroforestry practices in Europe that will advance sustainable rural development. The project has four objectives: 1. to understand the context and extent of agroforestry in Europe, 2. to identify, develop and field-test innovations (through participatory research) to improve the benefits and viability of agroforestry systems in Europe, 3. to evaluate innovative agroforestry designs and practices at a field-, farm- and landscape scale, 4. to promote the wider adoption of appropriate agroforestry systems in Europe through policy development and dissemination. This report contributes to the second objective and Deliverable 2.5...

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