Search

Land use change (LUC) is a main cause of global environmental change, and is an important activity to be studied. Our research aims to examine the current state of evidence on the link between LUC and human health in the Amazon region. We conducted a scoping review of literature in two research databases, resulting in 14 papers for analysis. Our analysis demonstrated a lack of clear definitions for LUC, a wide variety of negative health effects from LUC, the lack of qualitative articles, a lack of studies exploring the potential positive health effects of LUC, and the predominance of studies coming from the Brazilian Amazon. Our study validated the prevailing idea that LUC can lead to negative health consequences, if not managed properly. [ABSTRACT FROM AUTHOR]

We present a thorough analysis of the scientific production in climate change and adaptation in Brazil. We conducted a bibliometric and bibliographic review to reveal and discuss how climate change research has been carried out. We compared a broader climate change research dataset with a more specific climate adaptation research dataset, to understand the main differences and convergence points, and how science conducted from a mitigation and adaptation perspective demonstrates potential to confront the climate change challenges and drivers in Brazil. Four main clusters of investigation within climate change were detected: (1) impacts on forest and plant development, (2) land use and ecology, (3) adaptation/governance, and (4) climate/atmospheric studies. Only about 5% of the total studies on climate change address adaptation, for which three main clusters of research were identified: (1) adaptation actions and policies; (2) urban environment, vulnerability, and health and (3) food and coastal impacts. Although there are strong research trends in climate change for the Amazon Forest, there was less evidence of studies concerning climate adaptation for this and other Brazilian biomes, smaller cities, rural and traditional communities, and poorer regions. Our results shed a light on the more commonly chosen research topics, their strongest points and potential gaps and trends. This can contribute to the scientific communication and implementation of climate actions in Brazil, and a better understanding of the climate science knowledge from the perspective of a middle-income country. [ABSTRACT FROM AUTHOR]

This paper uses the themes of language rights, language choice, and language risk to consider linguistic insecurity in the Northwest Amazon (Upper Negro river) region of Brazil. Because the region is home to a large number of languages (c. two dozen), the idea of preserving this diversity is a popular theme in discourses about language in the Upper Negro river. I argue that the ideologies underlying the goal of preserving 'diversity' as a concept are not, in fact, the same ones that have sustained the presence of these languages thus far, especially as concerns the Tukanoan languages of the Uaupés basin (Jackson, J. E. 1983. The Fish People: Linguistic Exogamy and Tukanoan Identity in Northwest Amazonia. Cambridge, UK: Cambridge University Press). Paradoxically, the reification of 'diversity' as a characteristic of the Northwest Amazonian Indigenous population has tended to promote homogenisation among groups that have historically valued differentiation from one another. In examining ideologies and practices surrounding each of the three themes of this issue, I suggest that discourses of 'diversity', applied at the local level, can create complex outcomes for the languages they are used to promote. [ABSTRACT FROM AUTHOR]

Purpose: The purpose of this paper is to examine the factors that influence the facilities management (FM) in construction sites in the Brazilian Amazon. Design/methodology/approach: The study used structured questionnaires, with the participation of 136 facilities professionals in construction sites in the Brazilian Amazon. These sites were selected with help of 17 facilities managers. The survey achieved a total response rate of 76.5 per cent. The factorial analysis was performed after checking the adequacy of the sample to the technique. The results allowed the continuation of data processing and the use of exploratory factorial analysis to summarize the variables and identify the influencing factors. Findings: The results indicated five factors that influence the FM on construction sites in the Brazilian Amazon, namely: negotiation with local entities; weather; local suppliers; manpower; and logistical infrastructure. With the proper understanding of these factors, facilities professionals could plan actions to minimize negative impacts over the FM on construction sites. Research limitations/implications: The influence of factors on FM was studied from the professionals' viewpoint. It is possible that there are other perspectives or other influencing factors. However, this work is limited to the analysis of the variables that make up the five dimensions presented. Practical implications: Organizations and FM professionals might be interested in the results of this research to enhance the FM performance on the construction sites existed and to plan the implementation of the FM on upcoming construction sites. Originality/value: This paper is the first large research about FM in construction sites conducted in the Brazilian Amazon and serve as a basis to other research works that promote the development of FM in Brazil. [ABSTRACT FROM AUTHOR]

Summary: Gazetting and maintaining protected areas (PAs) are political processes and, as such, depend on wider society's support in order to achieve their aims. In this paper, we evaluated the influence of gender, education, age, income, place of origin and place of residence on public support for PAs in the Brazilian state of Amapá, a new tropical forest frontier. We gathered 615 complete interviews with adults living in both rural and urban settings. We found that most (90.5%) of the participants support PAs and that this attitude is more likely to exist among urban than rural participants. We found that gender, education, age, income and place of origin did not influence support for PAs. Biodiversity conservation is the most common reason why PAs receive public support. In contrast, participants who do not favour PAs see them as providing no benefit to people. We suggest that support by local political leaders from dominant and rival political parties for conservation helps to promote acceptance of PAs by stakeholders. However, relatively low support for PAs among rural participants could indicate that the expectations of these populations regarding the social benefits associated with this conservation policy have yet to be fulfilled. [ABSTRACT FROM AUTHOR]

Amazonia is one of the world's most vulnerable regions to climate change but few studies pinpointing priority areas for local adaptation programmes exist. This paper aims to identify socio-climatic hotspots among the 515 municipalities that compose the Brazilian Amazon by using a three-step process. First, we identified the regional social hotspots, that is, municipalities that have currently low adaptive capacity, by calculating a composite infrastructure index based on the assessment of both current green and socioeconomic infrastructures. Second, we used a Regional Climate Change Index to identify the climate change hotspots, that is, those municipalities that have a high likelihood to experience future climate change risks. Third, we evaluated the geographic coincidence of social and climate change hotspots to identify the socio-climatic hotspots. We found that 117 municipalities are regional social hotspots and that 60 municipalities are regional climate change hotspots. Forty-six municipalities are considered as socio-climatic hotspots because they have very low to low composite infrastructure indices and very high climate risk indices. Local institutional capacity to integrate and execute national-level policies that enhance local adaptive capacity is a major constraint across the region. To face the challenges associated with climate change, municipalities in the Brazilian Amazon should embrace a more sustainable development model. Sustainable development, in the context of the Brazilian Amazon, implies conservation of the existing green infrastructure through the expansion of protected areas and indigenous lands, restoration of green infrastructure in areas of deficit, and substantial investments in urban socioeconomic infrastructures to foster a knowledge-based economy. Although local sustainable development and adaptation plans are essential across the entire region, the 46 municipalities identified in this study as regional socio-climatic hotspots could be prioritized for action. [ABSTRACT FROM AUTHOR]

• The research combines economic, historical and anthropological data on the role of forests in local livelihoods in three South American countries. • Results showed the strong economic importance of forests to Indigenous and non-Indigenous peoples, despite different contexts and histories. • Non-economic values of forests were also remarkably strong among Indigenous and non-Indigenous peoples inhabiting forests for varied time scales. • The utilitarian notion behind nature valuation is not sufficient to comprehensively understand how local populations benefit from forests. • Development policies should support and leverage non-economic forest values and cosmologies, and provide sustainable economic alternatives. Research on the contribution of forests to local livelihoods has so far had a strong focus on quantifying the monetary value of forest-derived products and services. In this paper, we move beyond monetary valuation and integrate the less tangible and sometimes culturally complex dimensions through which forests support local livelihoods. We look at four local contexts in the Brazilian, Bolivian and Ecuadorian Amazon, which differ markedly in terms of their biophysical, sociocultural and geopolitical settings. Combining economic and anthropological data, we used quantitative and qualitative methods, and measures of the ecological impacts of local forest uses. Quantitative analyses drew on datasets from 48 communities, and 510 households, while the qualitative analyses relied on semi-structured interviews with 78 families in 22 communities. Forest-based livelihoods exhibited complex portfolios, diversified production systems, seasonal variation of activities, and different specialization strategies. Beyond a source of subsistence and cash incomes, forests were locally valued by people across all sites in terms of identities, worldviews, territorial attachment, governance, and conservation. Populations with a longer history of interactions with the environment displayed more complex forest-related cultural systems, but even among people who had migrated into the forest in a more recent historical period, forest-based self-cultural identification was evident. At all sites, forests were unanimously recognized as critical to people's health and wellbeing, despite substantial differences in local histories, policy and market environments. The findings underscore the persistent importance of non-economic values of forests as both Indigenous and non-Indigenous groups constantly adapt their forest and land use practices based on transcultural exchange and changing conditions. A focus on economic value as the rationale for forest conservation disregards the striking resilience of cultural values in promoting forest conservation and use by diverse local and Indigenous communities, especially when supported by favorable policies and markets. [ABSTRACT FROM AUTHOR]

Our aim with this paper is to present a novel approach for developing story lines and scenarios by combining qualitative knowledge and quantitative data from different disciplines and discussing the results with relevant decision makers. This research strategy offers a solid foundation for perspectives into the future. The "laboratory" is the Brazilian Amazon, one of the hotspots of land-use change where local and global interests both collide and converge: local livelihoods are affected by regional and global climate change and by the loss of biodiversity caused by local and global economic interests in agro-industrial land use; such use contributes, in turn, to climate change. After decades of diverse policy interventions the question arises: What can we learn from past trajectories for a more sustainable development in the future? To answer this question, we combined qualitative story lines for the region, reviewed by local experts, with quantitative land-use scenarios, to study their regional and local manifestations in space. These results were then discussed again with local and national experts. Our findings suggest that in-depth knowledge of the diverging perspectives at a very local level is a fundamental prerequisite for downscaling global scenarios and upscaling local approaches to sustainable land-use management and thus, to producing communicable and applicable results. [ABSTRACT FROM AUTHOR]

The relationship between human welfare and deforestation in the Brazilian Amazonia has traditionally been thought to follow a boom-and-bust pattern. According to this pattern, forest clearing triggers rapid increases in human welfare levels (“the boom”) due to short-term economic gains; these levels then drop to below national or regional averages (“the bust”) after the forest stocks have declined, thus causing the local populations to become deprived of ecosystem services. However, recent studies have questioned the validity of this boom-and-bust pattern. In this paper, we use panel data and simultaneous autoregressive models to evaluate the effects of deforestation, urbanization, public investments, agriculture, and state policies on temporal changes in human welfare that occurred across multiple municipalities in the Brazilian Amazonia from 2005 to 2012, a period during which governments implemented a set of strategies aimed at controlling deforestation across the region. We found that: (a) signals of a boom-and-bust pattern are weak at the regional level, and therefore this pattern cannot be generalized across the entire region; (b) human welfare is increasing more rapidly in low-development municipalities than in high-development cities, and all municipalities are converging on at least one regional average rather than on a national average; (c) urbanization does not lead to positive changes in human welfare, which indicates that the infrastructure available in regional urban centers is limited; (d) public investments are negatively associated with human welfare growth, thus signifying that if public investments are not used to leverage the potential of other sectors of the local economy, human welfare will not improve; (e) agriculture is negatively associated with positive changes in human welfare at the local level, possibly due to the dominance of cattle-ranching as the predominant economic activity of this sector; and (f) state-level policies matter, and future analyses of regional trends in the realm of development and conservation across this region should take such policies into account. Finally, we suggest that although human welfare and deforestation retain a weak statistical relationship, we cannot contend that they have been fully decoupled. Forest loss across the region is still pervasive, and institutions are too weak to sustain the transition from a frontier development model to a conservation-centered model. [ABSTRACT FROM AUTHOR]

This article uses the oral myth of a blood-weeping water well from a small city in the Amazon River to discuss the origins and the significance of haunted waterscapes for Black Amazonians. According to this myth, a well that still exists on the lands of an ancient sugar plantation weeps blood to mourn the slaves whose bodies were carelessly thrown there after a life of exploitation and abuse. The article tracks the history of the myth by interrogating its Indigenous substrate, its arrival to Amazonia in the nineteenth century thanks to Bantu-speaking enslaved Africans, and its additional twenty-first-century changes in a context of post–military dictatorship Black rural mobilization. It points to the centrality of haunted waterscapes and slave ghostlore in present-day processes of identity building and Black mobilization in Amazonia (Brazil), and highlights the necessity to study analog processes across the African diaspora in the Americas. [ABSTRACT FROM AUTHOR]

Protected areas anchor the ecological infrastructure that societies need for long-term prosperity and provide benefits to local, national, and global stakeholders. However, these areas continue to go unfunded. In this paper, we have provided the first estimate of the return on investment for nine large protected areas that compose the core of the ecological infrastructure of the State of Amapá, which is located in a new forest frontier in Brazilian Amazonia. These nine protected areas will require US $147.2 million over five years in order to be established and then US $32.7 million in annual recurrent costs. If implemented, these nine protected areas have the potential to contribute at least US $362.4 million per year in benefits (timber, non-timber forest products, nature-based tourism, fisheries, and carbon) to the local economy. The return on investment (ROI) of these protected areas will be 1.6% during the first five years and 10% thereafter; however, ROI could reach 45.8% or more if option and non-use values are also included as benefits. Although the costs of establishing the protected area system in Amapá are higher (US $3.2–3.5 ha − 1 y − 1 ) than the costs reported in other tropical forest regions (US $0.2–0.4 ha − 1 y − 1 ), the investments required are within the reach of both state and national governments. Our study shows that if fully implemented, protected areas can become engines for socio-economic upliftment, making the conservation-centered development model a feasible option for most of the world's new forest frontiers. [ABSTRACT FROM AUTHOR]

Brazil has continuously been in the international spotlight, first as an emerging economy improving social inclusion and sustainable development, then suddenly as a global pariah on environmental governance. Using two case studies – the rising deforestation of the Amazon and the 2019 oil spill on Brazil's Northeast coast – we examine the Bolsonaro administration in the context of the UN Sustainable Development Goals, to reveal a combination of misgovernance and malgovernance, where transgressions are intentional. The article develops these analytical concepts, explores how environmental malgovernance in Brazil may be addressed and discusses how Bolsonaro's malpractices are internationally challenged, but also condoned. [ABSTRACT FROM AUTHOR]

In the 1990s, seed craftwork became an important practice among Sateré‐Mawé women in Manaus, Brazil, following initiatives for their political and territorial organisation in the city. This article ethnographically explores how the production of seed necklaces mobilises an extensive circuit of people, plants, skills and knowledges that challenges strict divides between Amazonian cities and villages. In the city, seed variety reflects the ability of indigenous women to maintain multiple and multilocal relationships. Following the paths of the seeds, this article discusses how Sateré‐Mawé groups produce fluid spatialities and manage relations with human and non‐human 'others' between urban and forest areas. [ABSTRACT FROM AUTHOR]

• Terra Legal had no overall impact on deforestation as of 2012. • Deforestation levels increased following Terra Legal in highly registered counties. • Spatial spillovers from Terra Legal were minimal in the short term. • Temporary crop cultivation decreased with greater registered area. • Investment loans increased in counties with more area registered by small and medium farms. This paper estimates the early impacts of Terra Legal , a large property rights reform, on deforestation and farming in the Brazilian Amazon. Twelve and a half million hectares, more than 2.5% of the Brazilian Amazon, have been registered under this program. The establishment of property rights may increase a farmer's incentive to invest in his land and expand his farm due to a lower risk of expropriation. On the other hand, the enforcement of conservation requirements may be easier when farmers have legal titles to their land. We use county level data from 2007 to 2012 on farm registrations, deforestation, crop choice and bovine management to test the impact of the Terra Legal land reform. While we find no overall impact of the program on deforestation during the period in our sample, we do show that there is substantial heterogeneity in impacts across counties. Counties with the largest area registered do have an increase in the level of area deforested, but they also have a decrease in the rate of deforestation. We investigate the extent to which changes in deforestation are related to the amount of registration that occurs among small, medium and large farms, and find limited support for less deforestation among counties with more area registered by small farms; more area registered by large farms is associated with a higher level of deforestation, but a decreased deforestation rate. Our results suggest that land tenure reform can create incentives to decelerate deforestation. Farm size has a strong impact on the farm management changes generated by improved property rights; coupling land tenure reforms with incentives to intensify production rather than expand could lead to reduced deforestation, particularly among small farms. [ABSTRACT FROM AUTHOR]

Triatominae are insects notorious as vectors of Trypanosoma cruzi, which is the etiologic agent of Chagas disease, and other trypanosomatids. Triatomines of the genus Rhodnius are primarily sylvatic, nevertheless the occurrence of native species that invade households suggests their possible role in the transmission of Chagas disease. Rhodnius montenegrensis was first described in 2012, but the biological aspects of this species are still unknown. This study aimed to analyze the biological aspects of R. montenegrensis under laboratory conditions. The emergence rate was 63.0%, the mean time required for the emergence was 13.9 ± 1.7 days, the biological cycle from egg to adult phase occurred in 105.2 ± 9.2 days, the number of bloodmeals required for each nymphal stage to reach the next stage varies between a minimum of two and a maximum of seven. The weight gained after a bloodmeal varied between 10.6 times on 1st-instar nymphs and 3.9 times on 5th-instar nymphs. The adult specimens had the lowest gain of weight, reaching 2.2 times on females and 1.6 times on males. The sex ratio observed was 1:1. These data are relevant to understand the life cycle of this new described species and to elaborate more effective vector control strategies. [ABSTRACT FROM AUTHOR]

Many factors drive wildlife hunting and consumption, including source of income, taste preference, culture, lack of alternative meat, meat price, and wealth, and the relative importance of these factors may vary from place to place. We describe three aspects of wild meat consumption and trade in the town of Tapauá, central Amazon, Brazil: (1) factors associated with consumption of wild and domesticated meats; (2) consumers' knowledge of and attitude toward wildlife, preference for meat, and perceptions about changes in wild and domesticated meat consumption; and (3) patterns of wildlife trade. We found that preference, price, wealth, and occupation were associated with meat consumption. Social links played an important role in local trade. Decreasing price and diversifying domesticated meat alternatives may lead to a decrease in wild meat consumption, if alternatives function as substitutes. Outreach could improve understanding of wildlife ecology and conservation and encourage reduction in wild meat consumption while retaining local culture. Fostering alternative livelihoods for hunters could help reduce hunting pressure. [ABSTRACT FROM AUTHOR]

Background and objective: In highly endemic areas, severe multibacillary forms of leprosy and reactional episodes are not rare in children. The objective of the present study was to describe the clinical and epidemiological aspects of leprosy reactions in children from the Brazilian Amazon. Methods: This was a prospective cohort study of 34 leprosy patients aged under 15 years diagnosed at a health referral unit in northern Brazil between April 2014 and June 2015. Follow-up medical consultations were performed during multidrug therapy (MDT) and one year after the end of treatment. Participants underwent a simple neurologic examination and answered a structured questionnaire. Results: Of the 34 recruited patients, 18 (52.9%) had leprosy reactions and/or neuritis. Among these, 10 (55.6%) had reactions at diagnosis, 13 (72.2%) had reactions after MDT, and 14 (77.8%) had two or more reactional episodes. Type I reactions occurred in 14 (77.8%) cases. Complications, such as disabilities, necrotizing erythema nodosum, or Cushing's syndrome, occurred in six (33.3%) patients. The following variables showed significant associations (p ≤ 0.05) with leprosy reactions: age 8–14 years, number of doctors seen (≥3), multibacillary classification, number of skin lesions (≥10), or borderline and lepromatous clinical forms. The high frequency of type I reactions resulted in prolonged corticosteroid therapy, which may cause deficient bone maturation in childhood. Conclusion: Older age in children, consulting many physicians for diagnosis, severe clinical forms, and numerous skin lesions were positively associated with reaction development. Reactions after MDT highlight the need for continuity in healthcare of children with leprosy. [ABSTRACT FROM AUTHOR]

This article examines the main tendencies and perspectives of peasant family farming (PFF) in agricultural frontiers such as the Amazon. The ontological features of PFF are discussed, in particular the multiple associations with, and subsumption to, agribusiness. Due to national politico-economic pressures, the Amazon was reinvented half a century ago as a vibrant agricultural frontier that attracted a vast contingent of migrants due to coordinated government plans and, in more recent years, the cultivation of export-oriented crops. One very intriguing feature of this dynamic geography is that small family farming represents the Other of capitalist agriculture, but it functions as a hesitant form of alterity that both resists and fulfils agribusiness. [ABSTRACT FROM AUTHOR]

Patterns of habitat selection are influenced by local productivity, resource availability, and predation risk. Species have taken millions of years to hone the macro- and micro-habitats they occupy, but these may now overlap with contemporary human threats within natural species ranges. Wattled Curassow (Crax globulosa), an endemic galliform species of the western Amazon, is threatened by both hunting and habitat loss, and is restricted to white-water floodplain forests of major Amazonian rivers. In this study conducted along the Juruá River, Amazonas, Brazil, we quantified the ranging ecology and fine-scale patterns of habitat selection of the species. We estimated the home range size of C. globulosa using conventional VHF telemetry. To estimate patterns of habitat selection, we used geo-locations of day ranges to examine the extent and intensity of use across the floodplain, which were then compared to a high-resolution flood map of the study area. We captured two females and one male, which we monitored for 13 months between September 2014 and September 2015. Average home range size was 283 ha, based on the 95% aLoCoH estimator. Wattled Curassows selected areas of prolonged flood pulses (six to eight months/year) and had a consistent tendency to be near open water, usually in close proximity to river banks and lakes, especially during the dry season. Amazonian floodplains are densely settled, and the small portions of floodplain habitat used by Wattled Curassows are both the most accessible to hunters and most vulnerable to deforestation. As a result, the geographic and ecological distribution of Wattled Curassows places them at much higher extinction risk at multiple spatial scales, highlighting the need to consider habitat preferences within their conservation strategy. [ABSTRACT FROM AUTHOR]

The aim of the present study was to detect DNA of Toxoplasma gondii in Crassostrea spp. oysters cultured in the state of Pará, Brazil. A total of 400 oysters were directly collected from a fixed rack system. Gills, gastrointestinal tract (GIT) and intervalvular liquid were separated and grouped into pool samples of 10 animals, resulting in 40 samples each of gills, GIT and intervalvular liquid. DNA extraction was performed using a commercial kit, and T. gondii DNA was detected by nested PCR using the primers Toxo3 and Toxo4, which produced an amplification product of 155 bp of the T. gondii gene B1. Nucleotide sequencing was performed for positive samples, and the obtained sequences were identified by comparison with sequences in GenBank. The DNA of T. gondii was detected in 5.8% (7/120) of the pool samples, of which 7.5% (3/40) was in the GIT, 5% (2/40) in the gills, and 5% (2/40) was in the intervalvular liquid. The obtained sequences presented 100% identity and overlap with T. gondii DNA sequences. This is the report of detection of T. gondii DNA in oysters from genus Crassostrea spp. originating from the state of Pará, eastern Amazon. [ABSTRACT FROM AUTHOR]

Abstract: Brazil is one of the major contributors to land‐use change emissions, mostly driven by agricultural expansion for food, feed, and bioenergy feedstock. Policies to avoid deforestation related to private commitments, economic incentives, and other support schemes are expected to improve the effectiveness of current command and control mechanisms increasingly. However, until recently, land tenure was unknown for much of the Brazilian territory, which has undermined the governance of native vegetation and challenged support and incentive mechanisms for avoiding deforestation. We assess the total extent of public governance mechanisms protecting aboveground carbon (AGC) stocks. We constructed a land tenure dataset for the entire nation and modeled the effects and uncertainties of major land‐use acts on protecting AGC stocks. Roughly 70% of the AGC stock in Brazil is estimated to be under legal protection, and an additional 20% is expected to be protected after areas in the Amazon with currently undesignated land undergo a tenure regularization. About 30% of the AGC stock is on private land, of which roughly two‐thirds are protected. The Cerrado, Amazon, and Caatinga biomes hold about 40%, 30%, and 20% of the unprotected AGC, respectively. Effective conservation of protected and unprotected carbon will depend on successful implementation of the Forest Act, and regularization of land tenure in the Amazon. Policy development that prioritizes unprotected AGC stocks is warranted to promote conservation of native vegetation beyond the legal requirements. However, different biomes and land tenure structures may require different policy settings considering local and regional specifics. Finally, the fate of current AGC stocks relies upon effective implementation of command and control mechanisms, considering that unprotected AGC in native vegetation on private land only accounts for 6.5% of the total AGC stock. [ABSTRACT FROM AUTHOR]

Abstract: We quantified the avoided deforestation impacts of environmental land registration in Brazil's Amazonian states of Mato Grosso and Pará between 2005 and 2014. We find that the program reduced deforestation on registered lands. The magnitude of the effect implies that deforestation in the two states would have been 10% higher in the absence of the program. The impacts of registration varied over time, likely due to changing suites of policies linking environmental registration to land use incentives. Our results also reveal that agriculturally suitable lands and those located in regions undergoing the most land‐use change were more likely to be registered than those in less suitable, less dynamic regions. We conclude that environmental registration is an important first step in implementing avoided deforestation policies targeting private landholders. [ABSTRACT FROM AUTHOR]

Based on research on the Murutucu Sugar Cane Mill Field School Project in Belém City, Pará State, Brazil, this article presents a novel approach to historical archaeology in the Amazon. An anthropological view is described with a focus on ethnic, social, economic, political, gender, and generational groups. Although archaeology in the Amazon has a long tradition of more than 150 years of research, most studies on the region examine precontact sites. In contrast, the few pioneering studies on Amazonian historical sites have pursued chronological and technological objectives and have been primarily restricted to military and religious sites. [ABSTRACT FROM AUTHOR]

Rates of deforestation reported by Brazil's official deforestation monitoring system have declined dramatically in the Brazilian Amazon. Much of Brazil's success in its fight against deforestation has been credited to a series of policy changes put into place between 2004 and 2008. In this research, we posit that one of these policies, the decision to use the country's official system for monitoring forest loss in the Amazon as a policing tool, has incentivized landowners to deforest in ways and places that evade Brazil's official monitoring and enforcement system. As a consequence, we a) show or b) provide several pieces of suggestive evidence that recent successes in protecting monitored forests in the Brazilian Amazon may be doing less to protect the region's forests than previously assumed. [ABSTRACT FROM AUTHOR]

Uncaria tomentosa (Willd. ex Schult.) DC., a plant native to the Amazon region, is used widely in popular medicine and by the pharmaceutical industry because of its anti-inflammatory activity. However, the survival of this species is endangered by deforestation and indiscriminate collection, and a preservation plan is urgently required. The objectives of this study were to determine the genetic and chemical variability between and within eight populations of U. tomentosa from the Brazilian states of Acre, Pará and Amapá, and to investigate possible correlations between genetic and geographical distances, and between geographical distances or altitude and the accumulation of bioactive oxindole alkaloids. Three sequence-related amplified polymorphism (SRAP) markers were employed to fingerprint genomic DNA, and the amounts of mitraphylline and isomitraphylline in leaf samples were established by high-performance liquid chromatography. Although significant divergence existed between the tested populations (FST = 0.246), the largest genetic diversity and the highest percentage of polymorphism (95.68%) was found within the population from Mâncio Lima, Acre. Gene flow was considered rather limited (Nm = 1.57), and no correlations between genetic and geographical distances were detected, suggesting that population structure followed an island model. Accumulations of mitraphylline and isomitraphylline varied in the range 32.94 to 0.57 and 3.75 to 0.36 mg g-1 dry weight, respectively. The concentration of isomitraphylline was positively influenced by altitude, such that the population collected at the site with the highest elevation (Tarauacá, Acre) exhibited the greatest alkaloid content. SRAP markers were very efficient in fingerprinting genomic DNA from U. tomentosa populations and clearly showed that genetic variability within populations was greater than between populations. A conservation and management plan should prioritize the creation of germplasm banks to prevent the loss of existing genetic variability, particularly within alkaloid-rich populations such as those of Tarauacá. [ABSTRACT FROM AUTHOR]

The knowledge of spatial pattern and geographic beta-diversity is of great importance for biodiversity conservation and interpreting ecological information. Tropical forests, especially the Amazon Rainforest, are well known for their high species richness and low similarity in species composition between sites, both at local and regional scales. We aimed to determine the effect and relative importance of area, isolation and climate on species richness and turnover in orchid bee assemblages among plateaus in central Brazilian Amazonia. Variance partitioning techniques were applied to assess the relative effects of spatial and environmental variables on bee species richness, phylogeny and composition. We hypothesized that greater abundance and richness of orchid bees would be found on larger plateaus, with a set of core species occurring on all of them. We also hypothesized that smaller plateaus would possess lower phylogenetic diversity. We found 55 bee species distributed along the nine sampling sites (plateaus) with 17 of them being singletons. There was a significant decrease in species richness with decreasing size of plateaus, and a significant decrease in the similarity in species composition with greater distance and climatic variation among sampling sites. Phylogenetic diversity varied among the sampling sites but was directly related to species richness. Although not significantly related to plateau area, smaller or larger PDFaith were observed in the smallest and the largest plateaus, respectively. [ABSTRACT FROM AUTHOR]

Regional and hemispheric reconfigurations in Latin America and the Caribbean are increasingly mediated by Brazilian power, and the engagement of Guyana, Suriname and French Guiana with this emerging context is intriguing. They are tentatively moving away from a Caribbean region with which they are culturally contiguous, towards a South American continent in which they are geographically located. This is partly a reflection of the gradual opening up of the Northern Amazonian space that they share collectively, and also with Venezuela and Brazil. These processes are occurring as cause and effect of Brazil’s emergence as a regional – and even regionally hegemonic – power. With reference to wider debates on regionalism and hegemony, we analyse the uncertain consequences of these shifts. [ABSTRACT FROM PUBLISHER]

Data shortfalls on species distribution affect species differently, but it is frequent among insects. Species distribution models (SDMs) are important tools to fill biogeographic deficits and provide support for practical conservation actions, particularly for cryptic or hard to survey species. We employed SDMs to evaluate one such species, the long-horned beetle ( Macrodontia cervicornis), listed as 'vulnerable' in the IUCN's Red List of Threatened Species. Given new distributional data for this species, we applied three different SDMs to: (1) provide the first assessment of this species' distribution and potential dispersal routes; (2) evaluate the effectiveness of the current South American protected areas system for its conservation; and (3) discuss its potential distribution, as well as historical, biogeographical, and taxonomic issues related to it. Our models reached fair True Skilled Statistics values (TSS > 0.5), with the core area for M. cervicornis located in the Amazon forest, although suitable areas were also predicted along the Atlantic forest. Areas in the dry diagonal South American corridor (dry biomes of Cerrado, Caatinga, and Pampas) in South America were not predicted as suitable. The preference of M. cervicornis for humid areas with high temperatures may guarantee a better physiological control for dehydration, considering that large insects are more affected by water loss. In general, approximately 15 % of the distribution of M. cervicornis is in humid protected areas. The disconnected distribution of the long-horned beetle may be an indication of the existence of cryptic species under the same classification. We suggest that similar studies with other insect groups (e.g. butterflies, bees) should be conducted to properly assess their distributions, conservation status, and responses to hot-humid gradients throughout South America. [ABSTRACT FROM AUTHOR]

Throughout human history, slow-renewal biological resource populations have been predictably overexploited, often to the point of economic extinction. We assess whether and how this has occurred with timber resources in the Brazilian Amazon. The asynchronous advance of industrial-scale logging frontiers has left regional-scale forest landscapes with varying histories of logging. Initial harvests in unlogged forests can be highly selective, targeting slow-growing, high-grade, shade-tolerant hardwood species, while later harvests tend to focus on fast-growing, light-wooded, long-lived pioneer trees. Brazil accounts for 85% of all native neotropical forest roundlog production, and the State of Pará for almost half of all timber production in Brazilian Amazonia, the largest old-growth tropical timber reserve controlled by any country. Yet the degree to which timber harvests beyond the first-cut can be financially profitable or demographically sustainable remains poorly understood. Here, we use data on legally planned logging of ~17.3 million cubic meters of timber across 314 species extracted from 824 authorized harvest areas in private and community-owned forests, 446 of which reported volumetric composition data by timber species. We document patterns of timber extraction by volume, species composition, and monetary value along aging eastern Amazonian logging frontiers, which are then explained on the basis of historical and environmental variables. Generalized linear models indicate that relatively recent logging operations farthest from heavy-traffic roads are the most selective, concentrating gross revenues on few high-value species. We find no evidence that the post-logging timber species composition and total value of forest stands recovers beyond the first-cut, suggesting that the commercially most valuable timber species become predictably rare or economically extinct in old logging frontiers. In avoiding even more destructive land-use patterns, managing yields of selectively-logged forests is crucial for the long-term integrity of forest biodiversity and financial viability of local industries. The logging history of eastern Amazonian old-growth forests likely mirrors unsustainable patterns of timber depletion over time in Brazil and other tropical countries. [ABSTRACT FROM AUTHOR]

Ocelots (Leopardus pardalis) are presumed to be the most abundant of the wild cats throughout their distribution range and to play an important role in the dynamics of sympatric small-felid populations. However, ocelot ecological information is limited, particularly for the Amazon. We conducted three camera-trap surveys during three consecutive dry seasons to estimate ocelot density in Amanã Reserve, Central Amazonia, Brazil. We implemented a spatial capture-recapture (SCR) model that shared detection parameters among surveys. A total effort of 7020 camera-trap days resulted in 93 independent ocelot records. The estimate of ocelot density in Amanã Reserve (24.84 ± SE 6.27 ocelots per 100 km2) was lower than at other sites in the Amazon and also lower than that expected from a correlation of density with latitude and rainfall. We also discuss the importance of using common parameters for survey scenarios with low recapture rates. This is the first density estimate for ocelots in the Brazilian Amazon, which is an important stronghold for the species. [ABSTRACT FROM AUTHOR]

Deforestation and fragmentation influence the microclimate, vegetation structure, and composition of remaining patches of tropical forest. In the southern Amazon, at the frontier of cropland expansion, forests are converted and fragmented in a pattern that leaves standing riparian forests whose dimensions are mandated by the Brazilian National Forest Code. These altered riparian forests share many characteristics of well-studied upland forest fragments, but differ because they remain connected to larger areas of forest downstream, and because they may experience wetter soil conditions because reduction of forest cover in the surrounding watershed raises groundwater levels and increases stream runoff. We compared forest regeneration, structure, composition, and diversity in four areas of intact riparian forest and four areas each of narrow, medium, and wide altered riparian forests that have been surrounded by agriculture since the early 1980s. We found that seedling abundance was reduced by as much as 64% and sapling abundance was reduced by as much as 67% in altered compared to intact riparian forests. The most pronounced differences between altered and intact forest occurred near forest edges and within the narrowest sections of altered riparian forests. Woody plant species composition differed and diversity was reduced in altered forests compared to intact riparian forests. However, despite being fragmented for several decades, large woody plant biomass and carbon storage, the number of live or dead large woody plants, mortality rates, and the size distribution of woody plants did not differ significantly between altered and intact riparian forests. Thus, even in these relatively narrow forests with high edge : area ratios, we saw no evidence of the increases in mortality and declines in biomass that have been found in other tropical forest fragment studies. However, because of the changes in both species community and reduced regeneration, it is unclear how long this relative lack of change will be sustained. Additionally, Brazil recently passed a law in their National Forest Code allowing narrower riparian buffers than those studied here in restored areas, which could affect their long-term sustainability. [ABSTRACT FROM AUTHOR]

In the Brazilian Amazon, a questão fundiária (the land question) has been asked and answered in a variety of ways since the region was opened up to large-scale migration and development projects in the 1960s. The question of who is entitled to land and under what conditions is at the heart of most debates concerning the region's future, but recent attempts to reform and simplify rural land tenure in Amazonia confront a history of contradictory land-use policies and a legacy of impunity. In response to economic and demographic pressures, the Brazilian state aims to combat the illicit occupation, sale, and transformation of lands. This article presents an ethnographic approach to the land question in Amazonia by studying the knowledge-making practices associated with the Programa Terra Legal (Legal Land Program), Brazil's effort to create a cadastral registry for rural holdings in the region. It argues that tenure regularization dedicated to securing smallholders' rights and to instituting environmental regulations is being used by rural elites as a mechanism to accumulate land and power. By showing how a reform program gets remade in the thrall of local interests and vernacular dispositions of property, this article reveals how knowledge both illuminates and obscures subjects of governance. [ABSTRACT FROM AUTHOR]

Our recent article, 'Are Brazil's Deforesters Avoiding Detection?' demonstrated that focusing illegal deforestation enforcement on the subset of forest monitored by the flagship PRODES system has caused PRODES to capture a declining share of deforestation in the Brazilian Amazon. Deforesters may be purposively seeking out forests not monitored for enforcement. Addressing the problem would help Brazil maintain a cutting-edge forest governance model worthy of transfer to other nations. Two commentaries questioned our decision to investigate solely PRODES and not additional government monitoring systems. We focused on PRODES because it is the most salient deforestation monitoring system. Other key deforestation monitoring systems are all either limited to the same monitoring footprint as PRODES, not used for enforcement, or are rarely used for measuring forest loss in the Brazilian Amazon. We do agree with the commentaries that Brazil's new satellite monitoring protocol for greenhouse gas emissions estimation is critical progress of the type we were advocating in our original article. [ABSTRACT FROM AUTHOR]