Borders as a Space for Mobility, Cooperation, and Tourism

The border is framed as a political/administrative element, as a space of contact of cultures and geographies, as a line of separation and permeability, generator of mobilities of different scales. During the last decades, the Iberian border has experienced depopulation dynamics and socio-economic reorganisations that have transformed the ways of working, the models of social organisation, occupation, and land use. In this context of growing mobility, tourism has become an important activity for the border due to its ability to generate employment and foster economic and social development. The mobilization of natural and cultural resources assumes significance in the valorization of these spaces, in line with the current policies of cross-border cooperation promoted by the EU and the efforts of the two Iberian countries. The border between central Portugal and Spain is taken as a study object, highlighting the existing dynamics and forms of cooperation, given the heritage values, capable of generating new attractions and functions in the oldest European border.

How do tourists consume a rural wine destination in central Portugal?

Space-time tourist behaviour is influenced by numerous factors related both to tourists and the destination. Yet, however complex it may be, understanding and to some extent managing the way tourists move in space and time is crucial to ensuring the quality of their experience, as well as the effective and sustainable management of destinations and attractions. In the rural wine tourism context, studies on space-time behaviour are rare. The present study uses empirical data collected from tourists staying in hotels of the Bairrada Wine Route territory (N = 116), combining a GPS tracking study with a questionnaire survey. Using a time-geographical analytical approach, the GPS tracking data were mapped for a more detailed analysis of the tourists’ movements in the Bairrada terroir. The findings highlight specificities of tourist consumption in the context of rural wine regions and provide valuable insights for destination planning, service design and marketing of the Bairrada Wine Route.

A New Method (MINDED-BA) for Automatic Detection of Burned Areas Using Remote Sensing

This work presents a change detection method (MINDED-BA) for determining burned extents from multispectral remote sensing imagery. It consists of a development of a previous model (MINDED), originally created to estimate flood extents, combining a multi-index image-differencing approach and the analysis of magnitudes of the image-differencing statistics. The method was implemented, using Landsat and Sentinel-2 data, to estimate yearly burn extents within a study area located in northwest central Portugal, from 2000–2019. The modelling workflow includes several innovations, such as preprocessing steps to address some of the most important sources of error mentioned in the literature, and an optimal bin number selection procedure, the latter being the basis for the threshold selection for the classification of burn-related changes. The results of the model have been compared to an official yearly-burn-extent database and allow verifying the significant improvements introduced by both the pre-processing procedures and the multi-index approach. The high overall accuracies of the model (ca. 97%) and its levels of automatization (through open-source software) indicate potential for being a reliable method for systematic unsupervised classification of burned areas.

Identification of Gracilariaceae (Rhodophyta) of central Portugal by histological and genetic methods

This study aims to identify different populations of Gracilariaceae collected from the central coast of Portugal through light microscopy, anatomical observations and genetic tools, essential approaches to correctly assign species identity. Samples were obtained from Ria de Aveiro (AV), Figueira da Foz (FFBC, FFMD), and Lagoa de Óbidos (LOBR, LOEV, LOBS). Although histological observations offered a visual representation of the characteristic pseudoparenchymatous organization, they did not allow a clear distinction among the species. The amplification of a ∼700 bp fragment of the mitochondrial cytochrome oxidase I gene, and its sequencing enabled us to assign the populations FFBC and LOBS to Gracilaria gracilis, and the populations AV, FFMD, LOBR, and LOEV to Agarophyton vermiculophyllum. This contribution will help phycologists to correctly identify the Portuguese populations of Gracilaria sensu lato at the species level, which will be crucial in ensuring that future studies and industrial exploration accurately target the correct species.

Linking Cork to Cork Oak Landscapes: Mapping the Value Chain of Cork Production in Portugal

Traditional farming landscapes in South and Central Portugal, known as montados, are affected by global socio-economic and biophysical pressures, putting the sustainability of the systems in jeopardy. Cork oak trees (Quercus suber L.) are characteristic features of these complex agro-silvo-pastoral agroforestry systems, delivering a globally important product, cork. The increasingly distant, global scale of decision making and trade can consequently be observed on the local, landscape, scale. In this study, we use a value chain approach to test the concept that landscape products can ensure sustainable management of the landscape of origin. We interviewed agents—cork producers, intermediaries, industrial transformers, and winemakers—about the challenges they perceived in the business and how these were connected to the landscape of origin. We illustrate the network of agents and sub-actors involved in the sector and highlight the most prominent concerns. We conclude that this approach can reveal the major points for determining the future of the montado, and we suggest that collaboration amongst value chain agents can be a pathway to landscape sustainability.

Pliocene marine Bivalvia of Vale do Freixo (Pombal, Portugal): updated taxonomic list and discussion

The exceptional Pliocene marine faunal assemblages of west central Portugal have been known since the late 19th century. They include highly diverse molluscan faunas whose study is far to be completed. Discovered nearly 40 years ago, Vale do Freixo (Carnide, Pombal) is perhaps the most outstanding fossil site. Neverthless, the bivalves remain relatively unknown. This study focuses on the taxonomy of this relevant group of marine Mollusca. The research, based on a detailed sampling of three fossiliferous beds from the Carnide Formation, yielded a list of 85 species belonging to 75 genera and 32 families. Forty-three species are new for the Carnide area and twenty-three are reported for the first time in the Portuguese Pliocene, increasing to 115 the number of known species in the Mondego Basin in the Beira Litoral.

Occurrence and Distribution of Fasciolosis in a Cohort of Ovine Livestock Restricted to a Mountain Plateau in Central Portugal

Fasciola hepatica is a parasite that is widespread in Europe, having been reported in ruminants of several European countries and causing an important economic impact. This study ascertained the occurrence and distribution of fasciolosis in Portuguese ovine livestock by assessing F. hepatica IgG antibodies in a cohort of confined sheep from a high-altitude region of central Portugal in a 2-year period. Positive animals were found in most locations and in both years, with 18 of the 92 animals (19.6% [95% confidence interval CI: 12.03–19.15]) and 17 of the same 92 animals (18.5% [95% CI: 11.15–27.93]) showing to be seropositive in the first year and second year, respectively (p = 0.85). Pasture contamination by F. hepatica eggs could be reduced by thorough anthelmintic treatments.

Motives for Thermal Tourism: An Application to North and Central Portugal

Health and wellness tourism should be particularly valued in the post-pandemic phase. It has the potential to be a strategic product that enhances the population’s well-being and quality of life, on social, physical, and environmental levels. Different proposals for specialized experiences that complement what the destination offers allow to position regions as health and wellness destinations. Thermal tourism should thus be encouraged as a specific product designed on the innovation and diversification observed in the related services and the benefits recognized for all ages. Considering the relevance of thermal springs and thermal tourists for the image, positioning, and development of touristic destinations, this research aims to identify the specific motivations of tourists that attract them to the practice of thermal tourism, to understand how the benefits for which thermal tourists search and their sociodemographic profile influence the motivations of tourists, and how those motivations determine the characteristics of travel. This research was developed on the North and Centre of Portugal for their relevance in the context of thermal springs and related touristic activities. To achieve the research objectives, a questionnaire survey was conducted among thermal tourists, through a non-probability by convenience sampling, using bivariate tests, such as Pearson’s chi-squared test, one-way ANOVA, and t-Student test. The results highlight that most respondents practiced thermal tourism due to leisure and relaxation benefits, such as the escape from daily stress, spend time with family, and being “pampered”; relaxation is the most valued motivation, followed by the search for psychological and physical well-being. The research found relations between the benefits expected by thermal tourists and their travel characteristics, such as the composition of the group, the general travel motivation, the chosen thermal destination, and the number of nights spent at the location. In thermal tourism, new challenges emerge, demanding the development of strategies, products, and services that respond to the needs of specific market sections.

X-ray Fluorescence and Laser-Induced Breakdown Spectroscopy Analysis of Li-Rich Minerals in Veins from Argemela Tin Mine, Central Portugal

In this work, X-ray fluorescence (XRF) and Laser-induced breakdown spectroscopy (LIBS) analyses were applied to samples of quartz, montebrasite, and turquoise hydrothermal veins in the Argemela Tin Mine (Central Portugal). Montebrasite (LiAl(PO4)(OH,F)) is potentially the main ore mineral; with its alteration, lithium (Li) can disseminate into other minerals. A hand sample was cut and analyzed by XRF and LIBS for several elements of interest including Cu, P, Al, Si, and Li. Although XRF cannot measure Li, results from its analysis are effective for distinguishing turquoise from montebrasite. LIBS analysis complemented this study, making it possible to conclude that turquoise does not contain any significant Li in its structure. The difference in spot size between the techniques (5 mm vs. 300 µm for XRF and LIBS, respectively) resulted in a poorer performance by XRF in accurately identifying mixed minerals. A thin section was petrographically characterized and mapped using LIBS. The mapping results demonstrate the possibility of the successful identification of minerals and their alterations on a thin section. The results of XRF analysis and LIBS mapping in petrographic sections demonstrate the efficacy of these methods as tools for element and mineral identification, which can be important in exploration and mining phases, complementing more traditional techniques.