Sandra Valente
University of Aveiro
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Sandra Valente.
Journal of Environmental Management | 2012
Gudrun Schwilch; Felicitas Bachmann; Sandra Valente; Celeste Coelho; Jorge Moreira; Abdellah Laouina; Miloud Chaker; Mohamed Aderghal; Patricia Santos; Mark S. Reed
There are many, often competing, options for Sustainable Land Management (SLM). Each must be assessed - and sometimes negotiated - prior to implementation. Participatory, multi-stakeholder approaches to identification and selection of SLM options are increasingly popular, often motivated by social learning and empowerment goals. Yet there are few practical tools for facilitating processes in which land managers may share, select, and decide on the most appropriate SLM options. The research presented here aims to close the gap between the theory and the practice of stakeholder participation/learning in SLM decision-making processes. The paper describes a three-part participatory methodology for selecting SLM options that was tested in 14 desertification-prone study sites within the EU-DESIRE project. Cross-site analysis and in-depth evaluation of the Moroccan and Portuguese sites were used to evaluate how well the proposed process facilitated stakeholder learning and selection of appropriate SLM options for local implementation. The structured nature of the process - starting with SLM goal setting - was found to facilitate mutual understanding and collaboration between stakeholders. The deliberation process led to a high degree of consensus over the outcome and, though not an initial aim, it fostered social learning in many cases. This solution-oriented methodology is applicable in a wide range of contexts and may be implemented with limited time and resources.
Ecology and Society | 2016
Joris de Vente; Mark S. Reed; Lindsay C. Stringer; Sandra Valente; Jens Newig
Although the design of participatory processes to manage social-ecological systems needs to be adapted to local contexts, it is unclear which elements of process design might be universal. We use empirical evidence to analyze the extent to which context and process design can enable or impede stakeholder participation and facilitate beneficial environmental and social outcomes. To explore the role of design and minor variations in local context on the outcomes of participatory processes, we interviewed participants and facilitators from 11 case studies in which different process designs were used to select sustainable land management options in Spain and Portugal. We analyzed interview data using quantitative and qualitative approaches. Results showed that although some aspects of local context affected process outcomes, factors associated with process design were more significant. Processes leading to more beneficial environmental and social outcomes included the following: the legitimate representation of stakeholders; professional facilitation including structured methods for aggregating information and balancing power dynamics among participants; and provision of information and decision-making power to all participants. Although processes initiated or facilitated by government bodies led to significantly less trust, information gain, and learning, decisions in these processes were more likely to be accepted and implemented. To further test the role of context in determining the outcomes of participation, we interviewed facilitators from a process that was replicated across 13 dryland study sites around the world, reflecting much greater national variations in context. The similarity of outcomes across these sites suggested that the socio-cultural context in which the process was replicated had little impact on its outcomes, as long as certain design principles were fulfilled. Overall, our findings provide a solid empirical basis for good practice in the design of participatory processes in the management of social-ecological systems.
Environmental Management | 2014
C. Kosmas; O. Kairis; C. Karavitis; Coen J. Ritsema; Luca Salvati; S. Acikalin; M. Alcalá; P. Alfama; J. Atlhopheng; J. Barrera; A. Belgacem; Albert Solé-Benet; J. Brito; Miloud Chaker; Raban Chanda; Celeste Coelho; M. Darkoh; I. Diamantis; O. Ermolaeva; V. Fassouli; W. Fei; J. Feng; F. Fernandez; A. J. D. Ferreira; C. Gokceoglu; D. Gonzalez; H. Gungor; Rudi Hessel; J. Juying; H. Khatteli
An approach to derive relationships for defining land degradation and desertification risk and developing appropriate tools for assessing the effectiveness of the various land management practices using indicators is presented in the present paper. In order to investigate which indicators are most effective in assessing the level of desertification risk, a total of 70 candidate indicators was selected providing information for the biophysical environment, socio-economic conditions, and land management characteristics. The indicators were defined in 1,672 field sites located in 17 study areas in the Mediterranean region, Eastern Europe, Latin America, Africa, and Asia. Based on an existing geo-referenced database, classes were designated for each indicator and a sensitivity score to desertification was assigned to each class based on existing research. The obtained data were analyzed for the various processes of land degradation at farm level. The derived methodology was assessed using independent indicators, such as the measured soil erosion rate, and the organic matter content of the soil. Based on regression analyses, the collected indicator set can be reduced to a number of effective indicators ranging from 8 to 17 in the various processes of land degradation. Among the most important indicators identified as affecting land degradation and desertification risk were rain seasonality, slope gradient, plant cover, rate of land abandonment, land-use intensity, and the level of policy implementation.
Environmental Management | 2014
O. Kairis; C. Kosmas; C. Karavitis; Coen J. Ritsema; Luca Salvati; S. Acikalin; M. Alcalá; P. Alfama; J. Atlhopheng; J. Barrera; A. Belgacem; Albert Solé-Benet; J. Brito; Miloud Chaker; Raban Chanda; Celeste Coelho; M. Darkoh; I. Diamantis; O. Ermolaeva; V. Fassouli; W. Fei; J. Feng; F. Fernandez; A. J. D. Ferreira; C. Gokceoglu; D. Gonzalez; H. Gungor; Rudi Hessel; J. Juying; H. Khatteli
Indicator-based approaches are often used to monitor land degradation and desertification from the global to the very local scale. However, there is still little agreement on which indicators may best reflect both status and trends of these phenomena. In this study, various processes of land degradation and desertification have been analyzed in 17 study sites around the world using a wide set of biophysical and socioeconomic indicators. The database described earlier in this issue by Kosmas and others (Environ Manage, 2013) for defining desertification risk was further analyzed to define the most important indicators related to the following degradation processes: water erosion in various land uses, tillage erosion, soil salinization, water stress, forest fires, and overgrazing. A correlation analysis was applied to the selected indicators in order to identify the most important variables contributing to each land degradation process. The analysis indicates that the most important indicators are: (i) rain seasonality affecting water erosion, water stress, and forest fires, (ii) slope gradient affecting water erosion, tillage erosion and water stress, and (iii) water scarcity soil salinization, water stress, and forest fires. Implementation of existing regulations or policies concerned with resources development and environmental sustainability was identified as the most important indicator of land protection.
International Forestry Review | 2015
Sandra Valente; Celeste Coelho; Cristina Ribeiro; G. Marsh
SUMMARY This paper investigates how sustainable forest management is addressed within the legal tools and the institutional framework in Portugal, and proposes a methodology for enhancing stakeholder participation in forest management. Portuguese forest policy is dealt with at the national level, incorporating the international and European guidelines. Based on a review of relevant policy documents and legislation, three key-principles towards sustainability were identified according to the national context: the prevention and mitigation of forest resources threats; the enhancement of the full value of forests; and the promotion of stakeholder participation in forest policy-making. The analysis demonstrated that most of the principles coming from the supra-national agenda are already included in the national forest policy. Nevertheless, stakeholder participation in forest policy-making in Portugal has been very limited. This is reflected in a poor implementation of forest policies, leading to the need for developing innovative participatory methodologies able to promote collaboration among all relevant stakeholders.
Scandinavian Journal of Forest Research | 2014
Cristina Ribeiro; Sandra Valente; Celeste Coelho; Elisabete Figueiredo
Forest fires affect Portugal and other southern European countries to a greater or lesser extent every year, causing severe environmental, social, and economic damage. This research is based upon the analysis of the results of a case study on the technical and social perceptions of multiple dimensions of forest fires in Portugal, which brings together the views and perspectives of different entities with expertise in forest management and in forest protection against fires, forest owners, and members of the public. Assessing perceptions of forest fires has proved to be relevant when it comes to a greater involvement of the local population in forest management. The results show that the opinions of local respondents were consensual in identifying crime as the main cause of the forest fires. Additionally, it is the repeated failure to clean the forest biomass which cause the rapid spread of forest fires. Damage caused to the environment was more of an issue with the local forestry technicians, and economic issues were at the forefront for the local community. Various solutions were put forward to mitigate these problems, but everyone agreed that cleaning the forests biomass and punishing arsonists should be at the top of the list of priorities.
Archive | 2010
Celeste Coelho; Sandra Valente; Cristina Ribeiro
To the South of the Douro and within the Vouga river systems, not far from the Atlantic coast, the Northwest Beira Highlands rise steeply from the coastlands and plains. They are composed of small mountains, but have a very marked relief because the Hercynian Massif (Macico Antigo), after suffering repeated folding, granitization and metamorphism, has been greatly worn down by erosion (Ferreira, 1978). They include the Montemuro Mountain in the South Douro river system, the Gralheira Massif (Freita, Arada and Arestal hills), and the Caramulo Mountain to the South (see location map of Portuguese continental highlands in the introductory article to this chapter).
Land Degradation & Development | 2014
Manuela Carreiras; A. J. D. Ferreira; Sandra Valente; Luuk Fleskens; Óscar Gonzales-Pelayo; J. L. Rubio; Cathelijne R. Stoof; Celeste Coelho; Carla S. S. Ferreira; Coen J. Ritsema
Journal of Risk Research | 2009
Elisabete Figueiredo; Sandra Valente; Celeste Coelho; Luísa Pinho
Forest Policy and Economics | 2015
Sandra Valente; Celeste Coelho; Cristina Ribeiro; Hanspeter Liniger; Gudrun Schwilch; Elisabete Figueiredo; Felicitas Bachmann