Luís Silva

Luís Silva
University of the Azores | UAc

PhD

About

203
Publications
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2,344
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Publications

Publications (203)
Article
Climate change is one of the most significant challenges to biodiversity conservation, particularly in dry tropical islands, such as the Cabo Verde archipelago where only three endemic tree taxa occur – Dracaena draco subsp. caboverdeana, Phoenix atlantica and Sideroxylon marginatum – all classified as threatened. The main goal of this study was to...
Article
Full-text available
Assessment of forest ecosystems and their services is seen as a key action for the advancement of biodiversity objectives, and to inform the development and implementation of related policies and planning. The Azorean forest is important for timber production, the protection of soil and water resources, and for its recreational and aesthetic value....
Article
Full-text available
Tourists have become increasingly interested in certain aspects of their destination, including landscape and biodiversity elements, thereby promoting the development of nature-based tourism. The Azores are considered a sustainable tourism destination, with various natural attractions, including hiking trails. Based on the hypothesis that natural v...
Article
Tree-ring inter-annual pattern variation is crucial in dendrochronology, allowing the identification of possible limiting factors on growth. Thus, trees exposed to subtropical or tropical climates without a marked seasonality may show a low degree of interannual variation, impeding a straightforward dendroclimatological approach. Meanwhile, subtrop...
Article
Full-text available
Soil microbial community structure is determined by environmental conditions and influenced by other factors, such as the intensity of the land use management. Studies addressing the effect of environmental factors and management on grassland soil microbial communities at the continental scale are missing, and the wide range of ecosystem services p...
Article
Full-text available
Research in Macaronesia has led to substantial advances in ecology, evolution and conservation biology. We review the scientific developments achieved in this region, and outline promising research avenues enhancing conservation. Some of these discoveries indicate that the Macaronesian flora and fauna is composed of rather young lineages, not Terti...
Preprint
Full-text available
Assessment of forest ecosystems and their services is seen as a key action for the advancement of biodiversity objectives, and to inform the development and implementation of related policies and planning. We assessed biodiversity, structure and carbon stocks in a gradient of three forest types (Natural Forest-NF; Exotic Woodland-EW and Production...
Article
In the last decades, the number of publications dedicated to the application of species distribution models (SDMs) to invasive alien plants (IAPs) has constantly increased. Although recent reviews have addressed very relevant issues in the application of SDMs, the modelling approaches (i.e., algorithms) applied to IAPs have not been systematized. T...
Article
Metagenomics methods enable the determination of the microbial community found in an environment, and the study of microbial diversity and function. These techniques accelerated the study of the soil microbiome, an important component for global nutrient cycling in diverse ecosystems, including forests and grasslands. We performed a review and bibl...
Conference Paper
Tree-ring interannual pattern variation is crucial in dendrochronology, allowing the identification of possible limiting factors on growth. Thus, trees exposed to sub-tropical or tropical climates without a marked seasonality, may show a low degree of interannual variation, impeding a straightforward dendroclimatological approach. Meanwhile, subtro...
Article
Full-text available
Unattached nodules of calcareous red algae (Rhodophyta), known as rhodoliths, are widely reported and studied in places that extend from the tropics to polar latitudes. Factors controlling the distribution of the rhodolith-forming species remain poorly understood. A review of the global distribution of present-day rhodolith beds was undertaken, col...
Presentation
Full-text available
In the last decades, many natural areas were globally altered into rangeland or pastureland, which became one of the dominant land cover types. More than 50% of the land use in the Azores corresponds to pastureland, with agroindustry being a relevant socio-economic sector. With the world’s climate changing at a rapid pace, a more sustainable manage...
Article
Full-text available
Seminatural habitats are declining throughout the world; thus, the role of small an-thropogenic habitats in the preservation of plants is becoming increasingly appreciated. Here, we surveyed the orchid flora of roadside verges in five Central European countries (Austria, Hungary, Romania, Slovakia, and Slovenia) and tested how the surrounding lands...
Article
The particularities of volcanic soils raise the need to better understand the link between soil agricultural management intensity and trace metal bioaccumulation. The Azores are a region characterized by volcanic soils, which were changed in different degrees according to the intensity of the agricultural practices. The main objective of this study...
Article
Full-text available
In 2005, the Economic Community of West African States (ECOWAS) adopted the Common Agricultural Policy of ECOWAS (ECOWAP), as an instrument for implementing the Comprehensive Africa Agriculture Development Program (CAADP). The main goals of ECOWAP/CAADP were set to promote agriculture development and end hunger by 2025. In this study we focused on...
Conference Paper
Full-text available
The worldwide study of the geological record of the Last Interglacial is key to reconstruct the climatic and oceanographic conditions during that time interval. Here we present preliminary results of a comprehensive field analysis of one of the most extensive and least studied Quaternary fossiliferous sequences in Cabo Verde attributed to the Last...
Article
Full-text available
The Azores, Madeira, Selvagens, Canary Islands and Cabo Verde are commonly united under the term "Macaronesia". This study investigates the coherency and validity of Macaronesia as a biogeographic unit using six marine groups with very different dispersal abilities: coastal fishes, echinoderms, gastropod molluscs, brachyuran decapod crustaceans, po...
Article
Full-text available
The Azores, Madeira, Selvagens, Canary Islands and Cabo Verde are commonly united under the term “Macaronesia”. This study investigates the coherency and validity of Macaronesia as a biogeographic unit using six marine groups with very different dispersal abilities: coastal fishes, echinoderms, gastropod molluscs, brachyuran decapod crustaceans, po...
Conference Paper
Full-text available
Forests provide a broad range of ecosystem services, but their contribution is not homogeneous. Due to land changes associated with anthropogenic activity, primordial forests have been replaced by production and secondary forest, often constituted by exotic woodland, particularly in islands. This research addresses ecological and economic valorisat...
Book
Full-text available
The European Red List is a review of the status of European species according to IUCN regional Red Listing guidelines. It identifies those species that are threatened with extinction at the regional level – in order that appropriate conservation action can be taken to improve their status. This publication summarises results for all Europe’s native...
Book
Full-text available
The European Red List is a review of the status of European species according to IUCN regional Red Listing guidelines. It identifies those species that are threatened with extinction at the regional level – in order that appropriate conservation action can be taken to improve their status. This publication summarises results for all Europe’s native...
Conference Paper
Full-text available
The concept of ecosystem bundles as sets of consistently associated ecosystem services (ES) is used to quantify ES relationships and the socio-ecological conditions that drive them. Identifying ES bundles and their drivers is a useful strategy to improve management and policy decisions that goes beyond the concept of multifunctionalty and addresses...
Article
Full-text available
Knowledge about folk medicines is limited to elder community members of remote communities, like Sete Cidades in the Azores. The Azores, 1300 km west of Portugal, are nine volcanic islands, totalling 2330 km 2 of land dispersed by 173,200 km 2 in the North Atlantic Ocean. The present study aims to scientifically document the uses of plant species f...
Presentation
Nature-based tourism is the new paradigm of nature destinations, thus tourists are increasingly interested in peculiar aspects related with local landscape and biodiversity. The Azores are considered a sustainable nature destination, with several tourist attractions including hiking trails. To test the hypothesis that natural vegetation/forest may...
Article
Full-text available
Climate change is gaining attention as a major threat to biodiversity. It is expected to further expand the risk of plant invasion through ecosystem disturbance. Particularly, island ecosystems are under pressure, and climate change may threaten forest-dependent species. However, scientific and societal unknowns make it difficult to predict how cli...
Article
Full-text available
As in many archipelagos, the Azorean primary forest was largely cleared and replaced by secondary forest and grassland, the Azorean tree Laurus azorica (Seub.) Franco being one of the dominant trees in the remaining natural forests. Dendrochronological and dendrometric studies in the Azores mainly focused on non-indigenous trees, either used for ti...
Poster
Full-text available
While agro-climatic region is the stronger driver (due to prevailing environmental conditions), grassland management is an important determinant of fungal community composition. Swiss extensive grasslands promote higher fungal OTU richness, with this being significantly linked to an increase in plant species richness.
Article
Our view of community ecology has evolved over time, beginning with two extreme visions of plant communities which were considered either as species associations driven by random coincidences or as complex organisms with clear interdependencies. More recently, biological communities tend to be viewed as a set of local community assemblages that are...
Poster
Globally, island forests have suffered considerable anthropogenic change, and the respective scientific knowledge is still heterogeneous. This is evident in the Azores, where only about 10% of the native forest remains, production forest is largely dominated by one species, and invasive woodland has spread. Dendrochronology is the basis of a better...
Poster
The natural vegetation in many areas of the world has been replaced by pastures and monocultures, leading to profound changes in the soil and plant communities. Therefore, a more sustainable management is desirable for pastureland worldwide. The Azores are ideal to model those changes, with habitats ranging from semi-natural to completely artificia...
Article
Full-text available
The phylogenetic relationships and phylogeography of two relatively rare Macaronesian Lactuca species, Lactuca watsoniana (Azores) and L. palmensis (Canary Islands), were, until this date, unclear. Karyological information of the Azorean species was also unknown. For this study, a chromosome count was performed and L. watsoniana showed 2n = 34. A p...
Chapter
Full-text available
As plantas exóticas, introduzidas acidental ou propositadamente pelas atividades humanas, são uma importante componente da flora terrestre em Portugal. Na região Autonoma dos Açores um terço das manchas florestais é dominado por Pittosporum undulatum, ameaçando os ecossistemas naturais, nomeadamente a vegetação nativa. Têm sido realizados um conjun...
Presentation
Full-text available
The natural vegetation in many areas of the world has been replaced by pastures and monocultures, leading to profound changes in the soil and plant communities. Therefore, a more sustainable management is desirable for pastureland worldwide. The Azores are ideal to model those changes, with habitats ranging from semi-natural to completely artificia...
Article
Past climate changes provide important clues for advancement of studies on current global change biology. We have tested large-scale biogeographic patterns through four marine groups from twelve Atlantic Ocean archipelagos and searched for patterns between species richness/endemism and littoral area, age, isolation, latitude and mean annual sea-sur...
Data
Supplementary files from Marine Pollution Bulletin, 126: 101-112, Global change impacts on large-scale biogeographic patterns of marine organisms on Atlantic oceanic islands, by ÁVILA, S.P., R. CORDEIRO, P. MADEIRA, L. SILVA, A. MEDEIROS, A.C. REBELO, C. MELO, A.I. NETO, R. HAROUN, A. MONTEIRO, K. RIJSDIJK & M.E. JOHNSON (2018).
Poster
Full-text available
The knowledge of medicinal properties of plants was transmitted from generation to generation and is now the object of study of ethnobotany and ethnopharmacology.1 In rural societies and developing countries, the use of medicinal plants (also known as herbal medicine included in traditional medicine practice) is both a necessity and valuable resour...
Article
As one cause for biodiversity loss, invasive alien species are a worldwide threat. However, exotic woodland can also have an enormous biomass potential. The goal of this study was to evaluate the available aboveground biomass (AGB, including trunk, branches and foliage) of the widespread woody plant invader Pittosporum undulatum in the exotic woodl...
Article
Full-text available
Invasive alien species are among the most important, least controlled, and least reversible of human impacts on the world’s ecosystems, with negative consequences affecting biodiversity and socioeconomic systems. Species distribution models have become a fundamental tool in assessing the potential spread of invasive species in face of their native...
Poster
Full-text available
Natural areas located outside protected areas can provide important refugees for biodiversity conservation, as well as important ecosystem and biodiversity services. In the Azores, about 23% of the land territory is protected, but there are still many natural areas that lack protection status. In this research, we tested this hypothesis by analysin...
Poster
Full-text available
Several models have been proposed to explain the distribution patterns of species and communities along environmental gradients, ranging from discrete, individual community types, to a continuum of plant communities. The Azorean natural vegetation is a good study model to test those hypotheses, since it has been described in detail by several autho...
Conference Paper
The use of biomass for energy production has shown a growing interest in recent years. Pittosporum undulatum is a widespread invasive tree in the Azores archipelago with a considerable potential as an energy resource. Sustainable use of forest resources demands accurate and precise estimation of standing biomass but for the Azores only a few studie...
Conference Paper
Recently, we described changes in plant community composition along gradients of anthropogenic disturbance, using a multinomial distribution in a Bayesian framework. Species were organized into categories (e.g. endemic, native, naturalized, invasive) and the proportions of each category in each community were represented by a multinomial vector. We...
Conference Paper
Species distribution models are algorithmic tools that relate the distribution and occurrence of a species to the environmental characteristics of the location from where it has been recorded. Those models, also known as ecological niche models, have emerged as an effective tool in spatial ecology, conservation and land management. The Ecological N...
Article
Pittosporum undulatum Ventenat (Pittosporaceae) is an invasive tree of forests and woodlands in several regions of the world. In the Azores archipelago it occupies about 30% of the forested areas and efforts to valorize its biomass are underway. Implementing sustainable forest management requires basic information on tree age and growth rate, yet t...
Article
Ephestia kuehniella (Lepidoptera, Pyralidae) and Sitotroga cerealella (Lepidoptera, Gelechiidae) are important factitious hosts used for production of biological control agents. Their differences in terms of biology and behavior require adjustments in their mass production, particularly when using corn or barley as food in grain or in bran. We mode...
Book
Full-text available
CIBIO-Açores, a research unit based at the University of the Azores and integrated in the Research Network on Biodiversity and Evolutionary Biology (InBIO, Associated Laboratory), organizes the first edition of its Spring Seminar with the purpose of disseminating its research activities within the academic community, but also with the funding agenc...
Article
Full-text available
Tree density is an important parameter affecting ecosystems functions and management decisions, while tree distribution patterns affect sampling design. Pittosporum undulatum stands in the Azores are being targeted with a biomass valorization program, for which efficient tree density estimators are required. We compared í T-Square sampling, Point C...
Article
Full-text available
The flora of a region is important in aesthetic, environmental and economic terms. Academic degree holders are fundamental for the sustainable development of a geographically isolated region such as the Azores, the University of Azores (UAc) contributing to that goal. We assessed the perception of the UAc students about the origin and the importanc...