Guilherme Braga Ferreira

Downforce Technologies

The bush dog Speothos venaticus, a rare Near Threatened South American canid that lives in packs, was thought to be extinct in Minas Gerais state, southeastern Brazil, until recently. Here, we report four recent records of the species in Minas Gerais, the first in the state since the description of the species in 1842. All records are from the Cerr...

Link to PDF: https://www.sciencedirect.com/science/article/abs/pii/S000632072030820X (paywall) Assessing protected area (PA) effectiveness is key to ensure the objectives of habitat protection are being achieved. There is strong evidence that legal protection reduces loss of natural vegetation, but biodiversity loss can still happen without signif...

Anthropogenic pressure has well‐documented effects on the spatial distribution of biodiversity but it can also have more subtle effects on wildlife, influencing the time of the day and for how long animals are active. These temporal effects have not received much attention from the scientific and conservation community, despite activity being intri...

Worldwide, nature-based tourism is becoming more popular and important economically. However, there is still debate regarding its impact on wildlife in protected areas. We conducted a quasi-experimental study to investigate the effects of tourism on the mammal community of Cavernas do Peruaçu National Park, a priority area for conservation in Brazi...

Download PDF here: https://authors.elsevier.com/a/1i5n%7E1R%7EeSml2 The establishment of protected areas and buffer zones has been widely adopted in many countries to mitigate biodiversity loss. However, in contrast to the growing evidence about the beneficial impacts of protected areas, ecological outcomes of buffer zones have rarely been measure...

Biogeographic context, such as biome type, has a critical influence on ecological resilience, as climatic and environmental conditions impact how communities respond to anthropogenic threats. For example, land‐use change causes a greater loss of biodiversity in tropical biomes compared to temperate biomes. Furthermore, the nature of threats impacti...

Large wildlife image collections from camera traps are crucial for biodiversity monitoring, offering insights into species richness, occupancy, and activity patterns. However, manual processing of these data is time-consuming, hindering analytical processes. To address this, deep neural networks have been widely adopted to automate image analysis....

The lack of synthesized information regarding biodiversity is a major problem among researchers, leading to a pervasive cycle where ecologists make field campaigns to collect information that already exists and yet has not been made available for a broader audience. This problem leads to long-lasting effects in public policies such as spending mone...

The evolutionary history and taxonomy of the Leopardus tigrinus species complex have been studied based on several approaches, mostly employing genetic and morphological data, leading to distinct classification schemes. We approached this problem from an ecological perspective, with 2 main goals: (i) to evaluate ecological niche differences among r...

Biogeography has a critical influence on how ecological communities respond to threats and how effective conservation interventions are designed. For example, the resilience of ecological communities is linked to environmental and climatic features, and the nature of threats impacting ecosystems also varies geographically. Understanding community-l...

Camera traps became the main observational method of a myriad of species over large areas. Data sets from camera traps can be used to describe the patterns and monitor the occupancy, abundance, and richness of wildlife, essential information for conservation in times of rapid climate and land‐cover changes. Habitat loss and poaching are responsible...

Recently, the tiger-cat species complex was split into Leopardus tigrinus and Leopardus guttulus, along with other proposed schemes. We performed a detailed analysis integrating ecological modeling, biogeography, and phenotype of the four originally recognized subspecies-tigrinus, oncilla, pardinoides, guttulus-and presented a new multidimensional...

Biogeography has a critical influence on how ecological communities respond to threats and how effective conservation interventions are designed. For example, the resilience of ecological communities is linked to environmental and climatic features, and the nature of threats impacting ecosystems also varies geographically. Understanding community-l...

The small Neotropical felids (SNF, < 6 kg) are among the least known species of the family, especially regarding their demographic parameters, which is of critical importance in management and conservation action planning. In this study, our goals were to assess density patterns for SNF: margay (Leopardus wiedii), northern tiger cat (Leopardus tigr...

The Program for Biodiversity Research (PPBio) is an innovative program designed to integrate all biodiversity research stakeholders. Operating since 2004, it has installed long-term ecological research sites throughout Brazil and its logic has been applied in some other southern-hemisphere countries. The program supports all aspects of research nec...

Given the failure of the world’s governments to improve the status of biodiversity by 2020, a new strategic plan for 2030 is being developed. In order to be successful, a step-change is needed to not just simply halt biodiversity loss, but to bend the curve of biodiversity loss to stable or increasing species’ populations. Here, we propose a framew...

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In...

Protected areas (PAs) are a cornerstone of conservation policy and have been established worldwide in order to mitigate the current environmental crisis. Although PAs are usually effective at avoiding habitat conversion, their effectiveness at safeguarding local biodiversity is less clear. Furthermore, a substantial number of PAs face threats relat...

Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across...

Biodiversity continues to decline under the effect of multiple human pressures. We give a brief overview of the main pressures on biodiversity, before focusing on the two that have a predominant effect: land-use and climate change. We discuss how interactions between land-use and climate change in terrestrial systems are likely to have greater impa...

Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across...

Camera trapping has been widely used to assess the occurrence, abundance, distribution and behavior of species and communities, and has has expanded considerably to investigate mammal species. However, the effectiveness of this method to evaluate other faunal groups is relatively poorly investigated. Using camera trapping and video recording, we i...

Bats are an excellent taxonomic group for research on elevational gradients and functional diversity, as they present a large number of species and functional traits. In general, elevation has a negative influence on bat diversity, but the effect is not necessarily linear. Often the effect of elevation on diversity may have a hump-shaped pattern, i...

Land claims by indigenous peoples can cause changes in established protected areas. The consequences of such changes for biodiversity conservation will be context-dependent and influenced by characteristics of the indigenous population as well as the protected area affected. In the Cerrado-Caatinga ecotone of Brazil, there is an ongoing legal proce...

Knowledge on the feeding ecology and habitat use of a species is of essential value for effective conservation. We describe the diet and spraints deposition sites for the Neotropical otter (Lontra longicaudis) at Cavernas do Peruaçu National Park, in south eastern Brazil. We collected spraints and recorded characteristics of the deposition sites fr...

Records of atypical black individuals of Neotropical canids are extremely rare. Here, we report the first ever record of a black-coloured maned wolf Chrysocyon brachyurus, either wild or in captivity. Using camera traps to survey a protected area in the Brazilian Cerrado we obtained 30 maned wolf photographic records, 25 in its common reddish colou...

Debate about the conservation value of secondary habitats has tended to focus on tropical forests, increasingly recognizing the role of secondary forests for biodiversity conservation. However, there remains a lack of information about the conservation value of secondary savannas. Here, we conducted a camera trap survey to assess the effect of seco...

The objectives of this study were to determine the richness of medium and large mammal species in two protected areas of the Espinhaço Mountain Range, state of Minas Gerais, Brazil; and to investigate the factors affecting the occurrence of those species. To accomplish that we placed 49 camera traps activated by heat and motion at Rio Preto State P...

Arquivo kml com os corredores de biodiversidade do relatório 'Definindo corredores de biodiversidade no Mosaico Sertão Veredas-Peruaçu'.

The southern portion of the Espinhaço Range in Brazil is recognized worldwide as a priority area for biodiversity conservation, and it contains a high number of endemic anuran species. We conducted field surveys and compiled published data on amphibian community composition from seven sites within Espinhaço Mosaic (EM; 910,000 ha) to explore the co...

E-book link: https://www.yumpu.com/pt/document/view/56489415/cerrado-em-busca-de-solucoes-sustentaveis

Protected areas (PAs) cover a small proportion of the Earth's surface and most species are not covered by the current network. Amphibians are the least represented group in PAs around the world and expanding the network is still the major recommendation for species conservation. We evaluated the effectiveness of PAs in safeguarding endemic amphibia...

PDF EM ALTA RESOLUÇÃO PODE SER SOLICITADO DIRETAMENTE AOS AUTORES As informações e imagens reunidas neste guia são fruto de pesquisas sobre os mamíferos de médio e grande porte desenvolvidas pelo Instituto Biotrópicos ao longo de dez anos (2003-2013), em unidades de conservação do Mosaico Sertão Veredas-Peruaçu. Esta é uma região de extrema relevân...

Resumo A região norte de Minas Gerais ainda mantém áreas significativas de vegetação nativa, contribuindo grandemente para a manutenção da biodiversidade no estado. Informações a respeito da comunidade de mamíferos de uma unidade de conservação desta região, o Parque Estadual Veredas do Peruaçu, são apresentadas neste trabalho. Os dados foram obtid...