Water Governance in Mediterranean Farming Systems through the Social-Ecological Systems Framework—An Empirical Case in Southern Portugal

Water governance is a major challenge in the Mediterranean context. Any action to drive water governance towards sustainability needs to be grounded in a holistic understanding of such challenges. Therefore, a first step towards the improvement of water governance is a grounded understanding of what is at stake, who are the actors involved, and how they interact. To achieve this level of understanding, we propose the use of the social–ecological Systems (SES) framework. This framework was developed to grasp the complexity of issues related to the sustainable use of public goods such as water. This study looks at water governance in the farming sector of three municipalities in the Alentejo and Algarve, in the south of Portugal. Data were collected using a literature review and 22 semi-structured interviews with territorial actors (i.e., public administration, non-governmental associations, private sector, decision-makers, and farmers). By using the SES framework, we provide an integrated characterization of water governance in the case study and identify the implicated factors. Between these factors, and focusing on the overlap between literature and actors’ perspectives, are (1) the lack of integrated and supported strategies for development, and (2) lack of communication between the actors that need to congregate efforts towards sustainable use of water resources. The study found few examples of collective efforts and long-lasting networks of collaboration, especially between science and practice. We conclude by arguing that place-based tailored policies are needed. Such policies should promote communication and collective actions between researchers, local organizations, public administration, and farmers

Unveiling Contrasting Preferred Trajectories of Local Development in Southeast Portugal

Mediterranean land systems are amongst the most susceptible to global change, in part due to the region’s vulnerability to climate change and misfit within a high production demanding political and societal setting. The impact of global drivers at a local scale (i.e., the possible trajectories of change of a territory) are context-dependent, and to some extent dependent on how local actors perceive them and act upon them. In this study, we focused on southeast Portugal and conducted 22 interviews and 1 collective workshop to understand how di erent actors across the territory anticipate the development of the region and its land systems. From our results, we get a picture of a depopulated territory, constrained by ill-adjusted policies to its harsh conditions, including little water availability and continuous depopulation. We found contrasting preferred trajectories of development for the territory. On one hand, there is a preference for prioritizing traditional land systems, usually rainfed and multifunctional. Contrasting, a need for water reservoirs that would increase water availability and allow for profitable agricultural activities and thus fixate population is recognized. The di erent perspectives fit with a wider debate on the role of agriculture, intensification and ecosystem services under an increasingly arid Mediterranean. The next challenge is to integrate technical expertise and knowledge with local needs and initiatives, to fit in a broader scale strategic plan. We identify a lack of technical support regarding soil health. Poor soil, from the perspective of several stakeholders, is a characteristic of the region. Knowledge dissemination is urgent so that farmers can proactively improve soil health and benefit from its capacity to increase production and retain water. We urge a higher e ort from the scientific community focusing on marginal areas, supporting knowledge dissemination and analysis of the impacts of di erent trajectories of development

When does Innovation Become Custom? A Case Study of the Montado, Southern Portugal

In theory, if a new idea offers a good solution for a current problem and is properly widespread, then there is an ongoing brokering process, and, at a certain moment in time, an innovation is no longer considered as such. In the present study, we examine the case of the Montado, an agro-silvo-pastoral system in southern Portugal, to reflect on when and how innovations become custom. Integrating data from 2013 and 2017, we identified innovative initiatives that, if expanded, could reverse the current decline of the Montado system. We categorized the identified innovations as 1) social and institutional, 2) regulations and policies, 3) products and markets, and 4) farming techniques and management practices. Innovation is deemed necessary for the preservation of the Montado, yet initiatives that have existed for over 20 years are still considered innovative and an exception to the rule. At least since 2013, innovationbrokering processes have been attempted, leading us to question why these innovations are not becoming custom. By examining categories of innovations, we suggest that for innovations to become custom, changes in social and institutional arrangements need to be reinforced by regulations and policies that support changes in products and markets as well as by the adoption of new farming techniques and management practices. We conclude by suggesting a research agenda that starts aligning the evolution of the Montado system with the desired future as soon as possible

A holistic approach to land system dynamics – The Monfurado case in Alentejo, Portugal

Understanding land system dynamics is fundamental for policy-making from local to global scale. Land system is a combination of land use, land management and territorial practices. To attain such complete information about landscape structures is a challenging task. Aiming to deepen knowledge on land systems, we applied a methodology meant to achieve a broader understanding of dynamics in the Sítio de Monfurado (SM), a Natura 2000 site and holder of High Nature Value farming systems. To do so, we combined spatial analysis of land system changes with a participatory approach designated as Territory Game. While the spatial analysis shows little change in the SM land systems, the territory is perceived as fast-changing by the territorial actors (e.g., stakeholders with an explicit role in territorial development). At both scales, and in agreement with literature, we find trends of simplification and intensification in land systems, typically associated with the reduction of multifunctionality. The combination of both approaches contributed to the understanding of past changes, the drivers that induce such changes, how these are interpreted and, how to act upon them in the future. The proposed combined methodology can bring new useful insights for policy-makers, although scaling from local to broader scale remains a challenge

A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling

Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.The uterine electromyogram, also called electrohysterogram (EHG), is the electrical signal generated by uterine contractile activity. The EHG has been considered an expanding technique for pregnancy monitoring and preterm risk evaluation. Data were collected on the abdominal surface. It has been speculated the effect of the placenta location on the characteristics of the EHG. In this work, a preliminary exploration method is proposed using the average spectra of Alvarez waves contractions of subjects with anterior and non-anterior placental position as a basis for the triple-dispersion Cole model that provides a best fit for these two cases. This leads to the uterine impedance estimation for these two study cases. Non-linear least square fitting (NLSF) was applied for this modelling process, which produces electric circuit fractional models’ representations. A triple-dispersion Cole-impedance model was used to obtain the uterine impedance curve in a frequency band between 0.1 and 1 Hz. A proposal for the interpretation relating the model parameters and the placental influence on the myometrial contractile action is provided. This is the first report regarding in silico estimation of the uterine impedance for cases involving anterior or non-anterior placental positions.publishersversionpublishe

Adaptive Filtering for the Maternal Respiration Signal Attenuation in the Uterine Electromyogram

Funding Information: For Arnaldo Batista and Manuel Ortigueira, this work was supported by the Portuguese National Funds, through the FCT Foundation for Science and Technology, within the scope of the CTS Research Unit, Center of Technology and Systems, UNINOVA, under the project UIDB/00066/2020 (FCT). Helena Mouriño was financed by national funds through FCT, Fundação para a Ciência e a Tecnologia, under the project UIDB/00006/2020. Publisher Copyright: © 2022 by the authors.The electrohysterogram (EHG) is the uterine muscle electromyogram recorded at the abdominal surface of pregnant or non-pregnant woman. The maternal respiration electromyographic signal (MR-EMG) is one of the most relevant interferences present in an EHG. Alvarez (Alv) waves are components of the EHG that have been indicated as having the potential for preterm and term birth prediction. The MR-EMG component in the EHG represents an issue, regarding Alv wave application for pregnancy monitoring, for instance, in preterm birth prediction, a subject of great research interest. Therefore, the Alv waves denoising method should be designed to include the interference MR-EMG attenuation, without compromising the original waves. Adaptive filter properties make them suitable for this task. However, selecting the optimal adaptive filter and its parameters is an important task for the success of the filtering operation. In this work, an algorithm is presented for the automatic adaptive filter and parameter selection using synthetic data. The filter selection pool comprised sixteen candidates, from which, the Wiener, recursive least squares (RLS), householder recursive least squares (HRLS), and QR-decomposition recursive least squares (QRD-RLS) were the best performers. The optimized parameters were L = 2 (filter length) for all of them and λ = 1 (forgetting factor) for the last three. The developed optimization algorithm may be of interest to other applications. The optimized filters were applied to real data. The result was the attenuation of the MR-EMG in Alv waves power. For the Wiener filter, power reductions for quartile 1, median, and quartile 3 were found to be −16.74%, −20.32%, and −15.78%, respectively (p-value = 1.31 × 10−12).publishersversionpublishe

Automatic contraction detection using uterine electromyography

UIDB/00066/2020 UID/MAT/04561/2019 PD/BDE/150312/2019Electrohysterography (EHG) is a promising technique for pregnancy monitoring and preterm risk evaluation. It allows for uterine contraction monitoring as early as the 20th gestational week, and it is a non-invasive technique based on recording the electric signal of the uterine muscle activity from electrodes located in the abdominal surface. In this work, EHG-based contraction detection methodologies are applied using signal envelope features. Automatic contraction detection is an important step for the development of unsupervised pregnancy monitoring systems based on EHG. The exploratory methodologies include wavelet energy, Teager energy, root mean square (RMS), squared RMS, and Hilbert envelope. In this work, two main features were evaluated: contraction detection and its related delineation accuracy. The squared RMS produced the best contraction (97.15 ± 4.66%) and delineation (89.43 ± 8.10%) accuracy and the lowest false positive rate (0.63%). Despite the wavelet energy method having a contraction accuracy (92.28%) below the first-rated method, its standard deviation was the second best (6.66%). The average false positive rate ranged between 0.63% and 4.74%—a remarkably low value.publishersversionpublishe

Mediterranean land system dynamics and their underlying drivers: Stakeholder perception from multiple case studies

• Land system dynamics from seven Mediterranean case studies are discussed. • Despite the diversity of contexts captured, transversal patterns were found. • Data shows disconnection between expected and desired futures. • Territorial actors can identify opportunities and actions towards desired futures. • Embedding actors within dynamics enables to frame local actions as drivers of change

Drivers of Productivity Trends in Cork Oak Woodlands over the Last 15 Years

Higher biodiversity leads to more productive ecosystems which, in turn, supports more biodiversity. Ongoing global changes affect ecosystem productivity and, therefore, are expected to affect productivity-biodiversity relationships. However, the magnitude of these relationships may be affected by baseline biodiversity and its lifeforms. Cork oak (Quercus suber) woodlands are a highly biodiverse Mediterranean ecosystem managed for cork extraction; as a result of this management cork oak woodlands may have both tree and shrub canopies, just tree and just shrub canopies, and just grasslands. Trees, shrubs, and grasses may respond differently to climatic variables and their combination may, therefore, affect measurements of productivity and the resulting productivity-biodiversity relationships. Here, we asked whether the relationship between productivity and climate is affected by the responses of trees, shrubs, and grasses in cork oak woodlands in Southern Portugal. To answer this question, we linked a 15-year time series of Enhanced Vegetation Index (EVI) derived from Landsat satellites to micrometeorological data to assess the relationship between trends in EVI and climate. Between 2000 and 2013 we observed an overall decrease in EVI. However, EVI increased over cork oaks and decreased over shrublands. EVI trends were strongly positively related to changes in relative humidity and negatively related to temperature. The intra-annual EVI cycle of grasslands and sparse cork oak woodland without understorey (savannah-like ecosystem) had higher variation than the other land-cover types. These results suggest that oaks and shrubs have different responses to changes in water availability, which can be either related to oak physiology, to oaks being either more resilient or having lagged responses to changes in climate, or to the fact that shrublands start senesce earlier than oaks. Our results also suggest that in the future EVI could improve because the rate of increase in minimum EVI is greater than the rate of decrease in maximum EVI, and that this is contingent on management of the shrub understorey as it affects the rate of decrease in maximum EVI. This will be the challenge for the persistence of cork oak woodlands, their associated biodiversity and social-ecological system

Water Governance in Mediterranean Farming Systems through the Social-Ecological Systems Framework—An Empirical Case in Southern Portugal

Water governance is a major challenge in the Mediterranean context. Any action to drive water governance towards sustainability needs to be grounded in a holistic understanding of such challenges. Therefore, a first step towards the improvement of water governance is a grounded understanding of what is at stake, who are the actors involved, and how they interact. To achieve this level of understanding, we propose the use of the social–ecological Systems (SES) framework. This framework was developed to grasp the complexity of issues related to the sustainable use of public goods such as water. This study looks at water governance in the farming sector of three municipalities in the Alentejo and Algarve, in the south of Portugal. Data were collected using a literature review and 22 semi-structured interviews with territorial actors (i.e., public administration, non-governmental associations, private sector, decision-makers, and farmers). By using the SES framework, we provide an integrated characterization of water governance in the case study and identify the implicated factors. Between these factors, and focusing on the overlap between literature and actors’ perspectives, are (1) the lack of integrated and supported strategies for development, and (2) lack of communication between the actors that need to congregate efforts towards sustainable use of water resources. The study found few examples of collective efforts and long-lasting networks of collaboration, especially between science and practice. We conclude by arguing that place-based tailored policies are needed. Such policies should promote communication and collective actions between researchers, local organizations, public administration, and farmers