Ricardo A. Correia

Familiarity breeds content: assessing bird species popularity with culturomics

Understanding public perceptions of biodiversity is essential to ensure continued support for conservation efforts. Despite this, insights remain scarce at broader spatial scales, mostly due to a lack of adequate methods for their assessment. The emergence of new technologies with global reach and high levels of participation provide exciting new opportunities to study the public visibility of biodiversity and the factors that drive it. Here, we use a measure of internet saliency to assess the national and international visibility of species within four taxa of Brazilian birds (toucans, hummingbirds, parrots and woodpeckers), and evaluate how much of this visibility can be explained by factors associated with familiarity, aesthetic appeal and conservation interest. Our results strongly indicate that familiarity (human population within the range of a species) is the most important factor driving internet saliency within Brazil, while aesthetic appeal (body size) best explains variation in international saliency. Endemism and conservation status of a species had small, but often negative, effects on either metric of internet saliency. While further studies are needed to evaluate the relationship between internet content and the cultural visibility of different species, our results strongly indicate that internet saliency can be considered as a broad proxy of cultural interest.

Does canopy pruning affect foliage-gleaning birds in managed cork oak woodlands?

Semi-natural cork oak woodlands are a biodiversity rich agro-silvo-pastoral system covering large areas in the Mediterranean. Canopies of adult oaks are often pruned, but nothing is known about the consequences of this treatment on biodiversity. We evaluated the impact of pruning on birds that forage in cork oak canopies in an area of southern Portugal. We characterized the use of trees by foraging birds with focal observations, and analysed the effects of pruning on density with point counts on pruned and control areas. As pruning reduces the foraging substrate for foliage gleaners, we predicted that these species would have lower densities in pruned areas. Pruning did not substantially affect overall bird density or species richness. However, as predicted, the density of species that foraged mostly by gleaning in the canopy tended to be lower in pruned areas, especially in winter when differences were statistically significant. In this season the combined density of foliage gleaners in the pruned stations was only half of that in controls. Pruning is also common in other managed Mediterranean woodlands that are important for birds, such as holm oak woodlands and olive groves, and foliage gleaners are likely to be affected in those too. The cumulative effects of pruning on all these habitats need to be assessed, but our results already indicate that pruning has negative consequences that should be properly considered in management decisions.

The scientific value of Amazonian protected areas

Protected areas (PAs) are under increasing pressure to demonstrate their broader value and contribution to society. Scientific research and associated knowledge production comprise one such value, which has received relatively little attention in the academic literature. Here, we use the Amazon region as a case study to quantify scientific knowledge production (as measured by scientific publications in peer-reviewed journals) in PAs and identify the main biophysical, geographical and social characteristics that influence such production. We adopt a multi-model inference approach with an innovative hurdle regression model to independently assess the factors influencing the presence of research and the number of studies in PAs. Our results indicate a highly skewed pattern of scientific production, with many PAs with few or no associated scientific articles. Larger, older and more highly protected PAs in Ecuador and Peru were most likely to have scientific production, while time since first publication was most strongly associated with the number of publications from a PA. These findings provide important insights that could be used to support and strengthen policy aimed at increasing the value of Amazonian protected areas for scientific research.

Geographic trends and information deficits in Amazonian conservation research

Amazonia has an iconic status in global conservation due to its enormous area and vast stores of biodiversity. Nevertheless, much of its biodiversity remains unknown, and many of the region’s forests are under threat of habitat loss due to deforestation and climatic instability. Based on the assumption that effective management and conservation of forest resources should be supported by geographically localized scientific knowledge, we mapped the spatial and temporal distribution of Amazonian conservation research and compared it to areas under threat from deforestation or with a high probability of climate change induced savannization/transition to seasonal forest. Specifically, we created a database of 4019 spatial coordinates of research sites collated from 857 conservation science research articles retrieved from Scopus. Research sites tend to cluster along major rivers and urban areas and new research sites tend to be located near existing sites. Information deficits are particularly acute in the south and southeast regions within the so called ‘arc of deforestation’. Areas at risk of ecosystem transition due to climate instability are generally well studied with the exception of a large area of southwest Amazonia that has a high risk of savannization. Our results suggest that a more systematic approach to Amazonian conservation research is required, specifically targeting those areas most under threat from anthropogenic environmental change.

Role of the Mediterranean Sea in differentiating European and North African woodland bird assemblages

The Mediterranean Sea has separated the sclerophyllous forests of southern Europe and northern Africa for millions of years, but its role structuring forest bird assemblages remains unclear. To address this issue we sampled bird assemblages in cork oak woodlands located north and south of the Strait of Gibraltar and compared abundance, diversity, and species and guild assemblage structure between regions. Abundance and diversity patterns were remarkably similar, but dissimilarity analyses of species and guild composition revealed differences in bird assemblage structure between regions. Differences are partly attributable to the effect of the Mediterranean as barrier to the dispersal of forest birds; a few species were unable to colonize North Africa, and many that colonized it remained in sufficient isolation to evolve into distinct taxa. In addition to this divergence of biogeographic genesis, assemblages also differ because in North African cork oak woodlands forest and insectivorous specialist species are less abundant. This dissimilarity could be due to the effect of different exploitation levels present in each region. Managed cork oak woodlands are widespread in the Western Mediterranean, and are valuable because they conciliate economic exploitation with high biodiversity. In North Africa these woodlands are of greater conservation concern because they harbour endemic bird species that give its assemblage a distinct character, cover a smaller area, and are currently under greater pressure from overexploitation. These results highlight the importance to implement management practices that increase resilience and maintain biodiversity value throughout the range of cork oak woodlands.

Cultural Services in the Caatinga

Cultural ecosystem services (CES) are “non-material benefits people obtain from ecosystems”. These benefits include recreation, aesthetic enjoyment, and spiritual fulfillment arising from the interaction between cultural and natural features. In this chapter, we describe the role of the Caatinga—a unique semiarid region located in northeast Brazil—as a source of cultural inspiration, recreation, knowledge, and spiritual significance. Firstly, we define and discuss the current conception of CES, exploring available approaches to measure them. Secondly, we reframe the Caatinga as a biocultural environment, created and maintained by the dynamic interactions between human communities and the landscape. We then identify and discuss the CES provided by the Caatinga, by combining a review of key literature and a novel big data approach based on content analysis of geo-referenced digital photographs. Finally, we critically evaluate the current state of knowledge about CES in the Caatinga, recommending multiple approaches to assess and quantify cultural values. Studies of CES in the Caatinga are only just beginning, but are critically important to demonstrate the enormous contribution of this unique environment to local cultures and the regional economy in the face of increasing land-use competition.

EU protected area network did not prevent a country wide population decline in a threatened grassland bird

Background Few studies have assessed the effectiveness of the Protected Area networks on the conservation status of target species. Here, we assess the effectiveness of the Portuguese Natura 2000 (the European Union network of protected areas) in maintaining a species included in the Annex I of the Bird Directive, namely the population of a priority farmland bird, the little bustard Tetrax tetrax. Methods We measured the effectiveness of the Natura 2000 by comparing population trends across time (2003–2006 and 2016) in 51 areas, 21 of which within 12 Special Protection Areas (SPA) that were mostly designated for farmland bird conservation and another 30 areas without EU protection. Results Overall, the national population is estimated to have declined 49% over the last 10–14 years. This loss was found to be proportionally larger outside SPA (64% decline) compared to losses within SPA (25% decline). However, the absolute male density decline was significantly larger within SPA . Discussion In spite of holding higher population densities and having prevented habitat loss, we conclude that Natura 2000 was not effective in buffering against the overall bustard population decline. Results show that the mere designation of SPA in farmland is not enough to secure species populations and has to be combined with agricultural policies and investment to maintain not only habitat availability but also habitat quality.

Drier climate shifts leaf morphology in Amazonian trees

The humid forests of Amazonia are experiencing longer and more intense dry seasons, which are predicted to intensify by the end of the 21st century. Although tree species often have long generation times, they may still have the capacity to rapidly respond to changing climatic conditions through adaptive phenotypic plasticity. We, therefore, predicted that Amazonian trees have shifted their leaf morphology in response to the recent drier climate. We tested this prediction by analysing historical herbarium specimens of six Amazonian tree species collected over a 60-year period and comparing changes in leaf morphology with historical precipitation data. Moreover, we explored spatial and temporal biases in herbarium specimens and accounted for their potentially confounding effect in our analysis. We found pronounced biases in herbarium specimens, with nearly 20% of specimens collected in close geographic proximity and around the 1975s. When accounting for such biases, our results indicate a trend of decreasing leaf size after the 1970s, which may have been spurred by an observed reduction in rainfall. Our findings support the hypothesis that (some) Amazonian trees have the capacity to adaptively change their leaf phenotypes in response to the recent drier climate. Nevertheless, the unavoidable spatial and temporal biases in herbarium specimens call for caution when generalizing our findings to all Amazonian trees.

A Bibliometric Analysis of High Impact Research in the Middle East Using Champion Works

ABSTRACT Increasing political and financial support for scientific research in the Middle East requires academic and research communities in the region to demonstrate the visibility and impact of their scientific output. However, for countries with smaller scientific communities or lack of detailed information on their scientific production, the use of common metrics of scientific impact (e.g., number of papers, impact factor, h-index, etc.) may fail to reveal their true ability to produce high quality research, and thus guarantee the wanted societal support. In such cases, identifying and highlighting outstanding papers produced by national institutions or scientists may be another way to demonstrate scientific capacity and impact. In this context, this work aims to provide an overview of champion works (papers that have received over 1,000 citations) produced by Middle East countries. This analysis focuses on science, medicine, and technology papers featured in the Science Citation Index Expanded of Web of Science. The authors identified 213 champion works authored by Middle East scientists published since the 1970s. Israel is currently the leading nation in the Middle East in terms of published champion works, but at least one such work was identified for the majority of countries in the region. Middle East champion works were published on a diverse range of subject categories and often featured in the top journals worldwide (e.g., Science, Nature, etc.). The top institutions in the Middle East authoring champion works and their leading collaborating countries worldwide are listed, and the role of international scientific collaborations in achieving these highly cited papers is highlighted.

Tibor Hartel and Tobias Plieninger: European wood-pastures in transition: a social-ecological approach

Wood-pastures were a traditional and common landscape in many regions of Europe but recent decades have seen them undergo a marked decline. Prompted by the many facets of global change, the complex network of interacting factors that shaped the unique character of these systems is slowly collapsing and the downfall of European wood-pastures threatens to obliterate their unique ecological and cultural values. The various expressions of wood-pastures observed across Europe are a reflection of local to global socioenvironmental conditions and, therefore, addressing their decline requires an innovative and encompassing approach. The authors lead the way forward by providing readers with a new and enveloping perspective that uses a ‘social–ecological framework to explore social and ecological values, governing institutions, threats and conservation approaches’. The book is organized under six main sections (Part I–VI) and contains 17 chapters spanning 303 pages. The first part of the book contains a comprehensive introduction to wood-pastures, covering their diversity and role as high nature value landscapes, their social and ecological dimensions, threats and conservation. Part II covers the history and change of wood-pastures over time, going from their origin in medieval times to exploring current drivers of change. Part III explores the biodiversity and ecology of wood-pastures; it addresses plant diversity, the role of grazing on landscape structure and provides a particularly interesting account of the importance of wood-pastures and old trees for saproxylic invertebrates, a threatened but neglected component of biodiversity. The fourth part focuses on the socio-cultural values associated with wood-pastures, such as landscape identity, traditional ecological knowledge, spiritual values and the cultural heritage of ancient trees. The role of governance institutions at the community, regional and international levels is analysed in detail throughout Part V. Finally, Part VI provides a synthesis of the issues explored in the previous chapters, analysing woodpastures under the frame of the EU Common Agricultural Policy (CAP) and discussing future perspectives for European wood-pastures. Within the thematic sections (Part II–IV), several chapters are accompanied by profiles of different European wood-pastures, which provide an overview of their diversity, status and threats across North-western, Southern and Eastern European regions. With this work, the authors deliver a much-needed and timely contribution towards diagnosing the challenges and opportunities for the future of European wood-pastures, in a timewhen they aremost threatened. Each individual chapter is a solid piece of work that can stand out individually for the readers interested in R. A. Correia (&) Centro de Biologia Ambiental, Departamento de Biologia Animal, Faculdade de Ciencias, Universidade de Lisboa, 1749-016 Lisbon, Portugal e-mail: rahc85@gmail.com