Search

Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Biotropica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: The Environmental Reserve Quota (ERQ) is a mechanism that can reduce the cost of environmental regularization of rural properties that have preservation deficit, and mainly, encourage the conservation of natural vegetation in properties that maintain areas in accordance with, or beyond legal requirements, attributing economic value to them. Objective: To estimate the amount of potential ERQ supply and demand in the municipality of Rondonópolis-MT, in order to identify information about the potential of this market. Methodology: The land area of properties registered in the Mato Grosso Environmental Registry System (SIMCAR) and vegetation data from the MapBiomas project (forest formation and savanna formation) were used to verify the legal reserve classification of properties based on current legislation. Areas with legal reserve surplus and deficit were identified, based on the sizes of properties and their vegetation. Results: A total of 1,212 properties registered in the SIMCAR in Rondonópolis-MT were identified, which corresponds to 70% of the total area of the municipality. Rondonópolis-MT has potential supply of 19,561 hectares to be marketed as ERQ, with potential demand of 13,712 hectares, which s represents a spare supply of 5,849 hectares. Conclusion: There is great potential for the ERQ market; however, the success of this initiative will depend on the inclusion of small properties, mainly of settlements, which will require institutional action to promote land regularization. [ABSTRACT FROM AUTHOR]

The article seeks to discuss the political perspective of indigenous peoples in their effort to resist aggression and reclaim back land and opportunities lost to development. The very general and the highly specific condition of indigenous groups in today's market-based globalization is directly connected with the growing interest of social scientists in the ontological turn, which entails critical interrogations of reductionist assumptions about 'what exists' and novel ways of questioning contested realities. The ontological turn is a re-evaluation of Western-centric conceptualisations of the world and an attempt to move beyond essentialist positions. The flourishing debate on political ontology informs an examination of the tragic socio-spatial experience of the Guarani-Kaiowa of South America, a relatively large indigenous people who had more than 99% of their land grabbed and struggle to resist genocidal pressures and systemic racism. The research investigated how the Guarani-Kaiowa mustered sufficient strength in recent decades to fight a battle that many considered hopeless. Empirical evidences demonstrate that the Guarani-Kaiowa, despite major challenges, have obtained some small, but significant political victories because of coordinated efforts to retain a social and spatial distinctiveness. Crucially, what has made the Guarani-Kaiowa unique is how perceived and charged social differences are mobilised according to the political goals of different groups (indigenous and non-indigenous) and in relation to a spatial setting that is simultaneously lost, desired and anticipated. If the socio-spatial characteristics of the Guarani-Kaiowa were regularly manipulated to render them invisible from a development perspective and to justify the appropriation of indigenous land and other illegal and racist practices by the national state and business sectors, at the same time their own singularisation was their best hope of resistance and the main force that allowed them to continue hoping for a better life and ethnic survival. [ABSTRACT FROM AUTHOR]

Ensuring the legal protection of geosites, or areas that have relevant geodiversity, and obtaining resources for the development of programs and actions in these territories are two of the great challenges in Brazil. This article presents an analysis of Brazilian legislation, seeking to identify the responsible bodies, sources of funds, and how each specific policy can relate to the protection and promotion of geodiversity. In addition, the proposed public policy for geodiversity, geotourism, and geoparks in the state of Mato Grosso is presented and discussed. For this, documentary research of national legislation was carried out, and existing records in the Legislative Assembly of Mato Grosso were analyzed for the Thematic Sectorial Chamber to debate the Geopark Project of Chapada dos Guimarães. The information was discussed based on a bibliographic survey with national and international references. The results show that although some geodiversity elements, such as fossils and caves, have specific legislation, there is no articulated national public policy on geodiversity that guarantees the identification, protection, and continuous management of geosites or even structural and financial support for the development of geoparks in Brazil. The creation of policies at the state or national level, aimed at establishing a managing body and permanent sources of funds, can be an important step to enable the development of actions related to the protection and dissemination of geodiversity, linked or not to geopark proposals. At the international level, the creation of a United Nations Educational, Scientific and Cultural Organization (UNESCO) convention that establishes clear bases for the dissemination and protection of geodiversity could encourage the development of policies in different countries as an international framework to guide themes. [ABSTRACT FROM AUTHOR]

ABSTRACT Acisanthera saxatilis is described, illustrated, and compared with putative relatives. The first specimen of this new species was collected 119 years ago by Oskar Andersson Gustaf Malme during his "second expedition Regnelliana". Acisanthera saxatilis is a little collected species apparently endemic to rocky sandstone formations in Chapada dos Guimarães, Mato Grosso state, Brazil. It differs from similar species by its perennial habit, lignotubers, isomorphic to slightly subisomorphic androecium, stamens positioned in a circle around the style during anthesis, antesepalous stamens with short connectives, small inconspicuous staminal appendages, and purple anthers. Photos of living specimens, a distribution map, scanning electron photographs of seeds and leaves, a preliminary conservation status assessment, as well as comments on vascular plant endemism at the Chapada dos Guimarães are provided.

ABSTRACT: Copper is an essential micromineral in animal feed; however, when consumed in excess, it can cause liver necrosis, hemolytic crisis, hemoglobinuric nephrosis and death in cattle. Although uncommon in this species, copper poisoning occurs as a result of exacerbated supplementation, deficiency of antagonist microminerals, or previous liver lesions. An outbreak of chronic copper poisoning is reported in semi-confined cattle after supplementation with 50 mg/Kg of dry matter copper. The cattle showed clinical signs characterized by anorexia, motor incoordination, loss of balance, jaundice, brownish or black urine, diarrhea and death, or were found dead, 10 to 302 days after consumption. Of the 35 cattle that died, 20 underwent necropsy, whose frequent findings were jaundice, enlarged liver with evident lobular pattern, black kidneys, and urinary bladder with brownish to blackish content. Microscopically, the liver showed vacuolar degeneration and/or zonal hepatocellular centrilobular or paracentral coagulative necrosis, in addition to cholestasis, mild periacinal fibrosis, apoptotic bodies, and mild to moderate mononuclear inflammation. Degeneration and necrosis of the tubular epithelium and intratubular hemoglobin cylinders were observed in the kidneys. Copper levels in the liver and kidneys ranged from 5,901.24 to 28,373.14 μmol/kg and from 303.72 to 14,021 μmol/kg, respectively. In conclusion, copper poisoning due to excessive nutritional supplementation is an important cause of jaundice, hemoglobinuria, and death in semi-confined cattle.

Classical swine fever (CSF) is considered one of the most important diseases of swine because of the far-reaching economic impact the disease causes to affected countries and regions. The state of Mato Grosso (MT) is part of Brazil's CSF-free zone. CSF status is uncertain in some of MT's neighboring States and countries, which has resulted in the perception that MT is at high risk for the disease. However, the risk for CSF introduction into MT has not been previously assessed. Here, we estimated that the risk for CSF introduction into the MT is highly heterogeneous. The risk associated with shipment of commercial pigs was concentrated in specific municipalities with intense commercial pig production, whereas the risk associated with movement of wild boars was clustered in certain municipalities located close to the state's borders, mostly in northern and southwestern MT. Considering the two pathways of possible introduction assessed here, these results demonstrate the importance of using alternative strategies for surveillance that target different routes and account for different likelihoods of introduction. These results will help to design, implement, and monitor surveillance activities for sustaining the CSF-free status of MT at times when Brazil plans to expand the recognition of disease-free status for other regions in the country.

The paper seeks to understand the macroeconomic context of the Brazilian Agroindustrial Complex’s constitution process and the incorporation of the Central-West region into the national economic space between 1965 and 1980 in order to analyze the regional class structure engendered by this process. This analysis is done through the bibliographical and documentary survey of sectoral, economic and regional public policies that led to the acceleration of the industrialization process in the country during the military governments. This is articulated with the analysis of data from the population, agricultural and industrial censuses of the 1965-1980 period. From this survey, the article makes a theoretical reflection on the framework of the Latin American Dependency Theory regarding the class structure originated from the incorporation of the Center-West region into the national economic space. The results of the study demonstrate that the incorporation of the Central West region into Brazilian capitalism took place by means of a joint action between State, landowners and agroindustrial capitals, and that it was a relevant step toward the change in Brazil’s position in the international division of labor and toward its differentiation regarding other peripheral countries. This incorporation, whose rhythm of expansion and development patterns were derived from the new agricultural technologies and from the domain of capitalist land ownership, generated a regional class pact whose discussion and reflection must take into account its similarity with the social tripod described by the Theory of Latin American Dependence, considering it typical of a dependent industrialization on an essentially agricultural region, yet indicating the industrial character of modern capitalist farming.

A juvenile specimen of a mermithid (Nematoda) was found parasitizing a third instar nymph of Triatoma sordida from Mato Grosso, Brazil. This is the first record of mermithid parasitism in a triatomine species. The Mermithidae represents a family of nematodes that are specialized insect parasites. Entomonematodes are one of the highly influential agents regulating the population dynamics of insects. This report introduces the opportunity to think about mermithids as a possible candidate for use as triatomine biological control. [ABSTRACT FROM AUTHOR]

In the climate and land use fields, policy mixes are complex in terms of the levels of governance, actors, and roles. They consist of policy instruments that target different actors and address multiple goals across several policy sectors and levels. The analysis of these complex arrangements extends beyond purely technical efficiency criteria, as several sources of tension between instruments may be identified, such as conflicting interests, goals, and approaches to implementation. The proliferation of governance networks complicates the understanding of actors' interactions, the types of authority influencing the outcomes of policy mixes, and importance of different levels of governance. This article provides a framework to address these analytical challenges, particularly the interconnected networks of policy actors and policy instruments. It draws on polycentric governance literature to analyse how power matters in policy networks. This includes identifying distinct types of power, actors' position, and variables that explain patterns of conflict, competition, convergence, and divergence in policy choices and outcomes. The framework is applied to the climate and land use policies implemented in the state of Mato Grosso, Brazil. Several methods were used to clarify these variables and to characterise policy mixes being implemented in the region, including social network analysis. [ABSTRACT FROM AUTHOR]

Copyright of Carta Económica Regional is the property of Universidad de Guadalajara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Tropical deforestation contributes to the build-up of atmospheric carbon dioxide in the atmosphere. Within the deforestation process, fire is frequently used to eliminate biomass in preparation for agricultural use. Quantifying these deforestation-induced fire emissions represents a challenge, and current estimates are only available at coarse spatial resolution with large uncertainty. Here we developed a biogeochemical model using remote sensing observations of plant productivity, fire activity, and deforestation rates to estimate emissions for the Brazilian state of Mato Grosso during 2001–2005. Our model of DEforestation CArbon Fluxes (DECAF) runs at 250-m spatial resolution with a monthly time step to capture spatial and temporal heterogeneity in fire dynamics in our study area within the ''arc of deforestation'', the southern and eastern fringe of the Amazon tropical forest where agricultural expansion is most concentrated. Fire emissions estimates from our modelling framework were on average 90 Tg C year−1, mostly stemming from fires associated with deforestation (74%) with smaller contributions from fires from conversions of Cerrado or pastures to cropland (19%) and pasture fires (7%). In terms of carbon dynamics, about 80% of the aboveground living biomass and litter was combusted when forests were converted to pasture, and 89% when converted to cropland because of the highly mechanized nature of the deforestation process in Mato Grosso. The trajectory of land use change from forest to other land uses often takes more than one year, and part of the biomass that was not burned in the dry season following deforestation burned in consecutive years. This led to a partial decoupling of annual deforestation rates and fire emissions, and lowered interannual variability in fire emissions. Interannual variability in the region was somewhat dampened as well because annual emissions from fires following deforestation and from maintenance fires did not covary, although the effect was small due to the minor contribution of maintenance fires. Our results demonstrate how the DECAF model can be used to model deforestation fire emissions at relatively high spatial and temporal resolutions. Detailed model output is suitable for policy applications concerned with annual emissions estimates distributed among post-clearing land uses and science applications in combination with atmospheric emissions modelling to provide constrained global deforestation fire emissions estimates. DECAF currently estimates emissions from fire; future efforts can incorporate other aspects of net carbon emissions from deforestation including soil respiration and regrowth.

Large numbers of dams for hydroelectric power production are currently planned or under construction in many areas around the world. While positive and negative social and environmental impacts of dams are increasingly well understood, little is known about attitudes of the general public towards dams, even though benefits to wider society are often cited to legitimise their construction. In Brazil's Upper Paraguay River Basin, more than 100 mostly small-scale hydropower dams are planned or under construction in what can be considered a regional dam construction boom. Here we analyse public preferences for strategies to manage dam impacts in the area by investigating the value base that underpins such preferences, drawing on the recently proposed Value Landscapes Approach as our theoretical framework and data from a large representative household survey (N = 1067). We find that contrasting attitudes towards dams, expressed in preferences for economically or ecologically oriented water policies are informed by opposing underlying value landscapes, that is, groups of closely related fundamental, governance-related, and assigned (water) values. While such tensions between opposing values can never be fully eliminated, our research nevertheless gives insights to policy-makers seeking to minimise value conflict and to improve the political legitimacy of public decision-making on dam construction. Moreover, we find that a majority of members of the general public would prefer concentrating dam construction on some rivers while keeping others free-flowing, with direct implications for ecosystems and inland fisheries. This finding may guide policy-makers wishing to develop publicly supported water resources management strategies. [ABSTRACT FROM AUTHOR]

We analyze in this article the occupation of the south of Mato Grosso by the Paraguayans during the War of Paraguay (1864-1870). We focus on two moments: the first includes the seizure of the ship Marquês de Olinda, the declaration of war on Brazil, and the occupation of Mato Grosso (between December, 1864 and early 1865). The second moment are the attempts by the Brazilian empire to expel the Paraguayan troops between 1865 and 1867, when it occurred the episode known as the Retirada da Laguna, and the expulsion of the paraguayans. [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]

Abstract Southern Amazonia has been the center of a large expansion of cropland and cattle production through land use change in both Amazon and Cerrado biomes. While this expansion has had noted impacts on the regional water cycle, little information is currently apparent in life cycle impact assessments of both cropland and cattle products. This study applies existing models to quantify the mid-point impacts of water consumption and land occupation of cropland and cattle following distinct production systems that rely on agricultural extensification and intensification (cropland irrigation, and increased pasture productivity). We focus on both terrestrial and aquatic flows to highlight complementarity in current impact assessment models, expressed through the following impact categories: Water Scarcity Footprint, Terrestrial Green Water Flows, Precipitation Reduction Potential, River Blue Water Production, Groundwater Recharge Potential, and Runoff Reduction Potential (introduced here). Results show conditional changes in magnitude and sign of potential impacts when comparing rain-fed to irrigated cropland, particularly in the Cerrado biome. Cropland irrigation can increase atmospheric and terrestrial water flows as expressed through Precipitation Reduction Potential (−95 m3 ha−1), River Blue Water Production (299 m3 ha−1), or Groundwater Recharge Potential (215 m3 ha−1). Moreover, increased pasture productivity led to an overall decrease in mid-point impacts of cattle production on the water cycle. While this study provides additional insight into the effects of cropland and cattle production systems in Southern Amazonia, our results also highlight the complementarity of existing mid-point impacts towards a better representation of freshwater use in life cycle assessment. Graphical abstract Image 1 Highlights • Agricultural intensification scenarios were tested in Southern Amazonia. • We used 6 water and land use LCIA models for cropland and cattle production. • We introduce the Runoff Reduction Potential impact pathway. • Current models are complementary for water use in LCA. [ABSTRACT FROM AUTHOR]

Since the 1980s, a French-Brazilian archaeological mission has studied the economic, social, cultural and symbolic dimensions of the oldest prehistoric settlements found to date in the Brazilian state of Mato Grosso. The ongoing examination of these habitats, settlements and rock-art sites seeks to better understand the territories and cultures of the precolonial groups who inhabited the southernmost part of Mato Grosso. In the course of these decades, systematic prospections in the region of the Vermelho River uncovered over a hundred sites decorated with both figurative and non-figurative paintings, drawings and carvings that depict images such as animals, humans and signs. This article analyzes the most recent discoveries of rock-art sites identified on the banks of the Vermelho and Gavião rivers. It contextualizes the region and the researches undertaken in its territory, and outlines the previous approaches and the methodology adopted at its rock-art sites. It then describes these rock-art sites and discusses the originality and the symbolic continuity of the marks left by precolonial groups in their landscape. [ABSTRACT FROM AUTHOR]

In 2009, the epidemiological situation of bovine tuberculosis was studied in the state of Mato Grosso, which is a traditional beef exporter. The state was divided into four regions. In each region, properties were selected randomly. A predetermined random number of animals were chosen from these properties, and comparative cervical tuberculin tests were conducted. In total, 28,878 animals from 1,133 properties underwent examination. The animals with inconclusive results were reexamined with the same diagnostic procedure in a minimal interval of 60 days. In each sampled property, a questionnaire-based survey was conducted to identify possible risk factors for the disease. In the state, the prevalence of infected herds and animals was 1.3% [0.7; 2.4] and 0.12% [0.03; 0.44], respectively. Further, the prevalence of infected herds and animals were 0.0% [0.0; 2.0] and 0.0% [0.0; 0.08] in the Pantanal region, 1.3% [0.5; 3.1] and 0.04% [0.01; 0.17] in the dairy region, 0.7% [0.2; 2.7] and 0.01% [0.003; 0.04] in the fattening region, and 1.7% [0.7; 4.1] and 0.24% [0.06; 0.90] in the breeding region, respectively. It was observed that the condition of the herds infected with bovine tuberculosis was associated with milk production, European or mestizo breeds, degree of sophistication in the production mode, and herd size of up to 486 animals. Therefore, the implementation of a monitoring system for detection and elimination of the residual infected herds along with incorporation of risk-based monitoring elements is the best strategy for the state.

Currently four species of Holochilus (Cricetidae: Sigmodontinae) are recognized. According to the literature, three species are recorded for Brazil: H. sciureus, H. brasiliensis and H. chacarius. Samples from western Brazil (Mato Grosso and Mato Grosso do Sul states) are usually reported as H. sciureus and, when referring to specimens from the Pantanal, as H. chacarius. However, the taxonomic status of specimens from this region has not been properly evaluated through detailed morphological analyses or voucher specimens. About 110 specimens of Holochilus deposited in Brazilian collections were qualitatively and quantitatively analyzed (univariate and multivariate tests). Our results suggested the existence of three species (H. sciureus, H. brasiliensis and H. chacarius) in Brazil, which present significant morphological and morphometric differences, thus confirming that the Mato Grosso and Mato Grosso do Sul samples, formerly misidentified as H. sciureus, belong to H. chacarius. This species differs from H. sciureus and H. brasiliensis by a series of pelage and skull characters, such as: the coloration of pelage, light orange-brown in the dorsum, light orangish in the flanks and white in the venter; ridges of the masseteric crest confluent at the level (or slightly above) of the mental foramen and at the anterior part of m1, alternated main molar cusps, lophids compressed and with acute outer margins (rarely prismatic), anteromedian fossetid labially displaced and subcircular (small to medium), metaflexid less developed (frequently not reaching the midline of the tooth), proto and hipoconid subrectangular in outline and transversely orientated, mesoflexid transversely orientated and mesoloph absent. The updated geographic distribution of Holochilus in Brazil shows that H. sciureus is present in the northern portion of the country, being the only species present at the Amazon and at the Caatinga and with limit in the Cerrado biome at the center of Goiás state. Holochilus brasiliensis is restricted to eastern Brazil, with its northern record at the Atlantic Forest of south Bahia. Holochilus chacarius occurs in the Pantanal areas of the Mato Grosso and Mato Grosso do Sul states. A new record extends the distribution of H. chacarius to the Cerrado biome at eastern Mato Grosso, confirming its presence in this biome.

Highlights • First large-N study on values and public water policy preferences in Brazil. • Empirical identification of two alternative value landscapes (groups of values). • Value landscapes relevant for determining people's water policy preferences. • Fundamental values relate equally to governance-related values and assigned values. • Findings may help to explain environment vs. development conflicts globally. Abstract A growing body of research suggests that people's values may be important predictors of their preferences regarding water governance and policy. However, this assertion is rarely tested empirically. The present study summarises the results of a large-scale quantitative study on the link between public water policy preferences and people's values, based on data from a representative sample of the general population collected in a household survey in the Upper Paraguay River Basin, Mato Grosso, Brazil (n = 1067). Structural equation modelling is applied to represent the clusters of values, or 'value landscapes', that shape attitudes and water policy preferences, in this case, for or against the construction of the highly controversial Paraguay-Paraná Waterway across the Pantanal wetland. Results demonstrate that opponents of the waterway share a value landscape composed of closely related self-transcendence values, democratic governance-related values, and ecological and cultural water values, whereas supporters hold self-enhancement values, economic governance-related values, and economic water values. Beyond this individual case study and beyond water governance, our findings may explain the protracted nature of, and seeming impossibility to resolve, environmental conservation vs. economic development conflicts more broadly. [ABSTRACT FROM AUTHOR]

Copyright of Pesquisa Veterinaria Brasileira is the property of Colegio Brasileiro de Patologia Animal - CBPA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The political-economy of the agriculture frontier in the Brazilian state of Mato Grosso, in the southern sections of the Amazon Region, is analysed in order to question the productivist argument commonly presented by the agribusiness sector. The assessment makes use of the category of rent considered as a proportion of exchange value diverted from production for the payment to the landowners and its class-based allies. The frontier in Mato Grosso has had basically three main rent extraction periods: a first moment when rent was forged by the state apparatus (1970s-1980s), a second period with serious turbulence and a macroeconomic transition (1980s-1990s) and a third phase with more complex flows of rent due to the neoliberalization of agribusiness (since the late 1990s). At the frontier of agribusiness, agricultural activity depends on combined strategies of rent creation and rent extraction. Empirical results suggest that rent is more than just the extraction of value from the use of land, but there is a wider capture of value from the network of relations that maintain land in production. Rent derives from land through the formation of a powerful network stateland-owners-private agroindustrial sector that provides the conditions for rent extraction. [ABSTRACT FROM AUTHOR]

The number of fires in the Amazon region increased dramatically at the beginning of 2022 compared to 2021. Considering that this period is also characterized by a large incidence of cloud-to-ground (CG) lightning in this region, we investigated if these phenomena may be related to each other. Two regions of Brazil were considered in the analysis: Mato Grosso state, on the border of the Amazon region where most of the deforestation occurs, and Amazonas state, in the interior of the Amazon region. In the first four months of 2022, 26,554 fires and approximately 3 million CG lightning flashes in Mato Grosso and 2468 fires and about 3.4 million CG lightning flashes in Amazonas were recorded. By comparison, in 2021, 16,844 fires and approximately 2.7 million CG lightning flashes in Mato Grosso and 1258 fires and about 3.2 million CG lightning flashes in Amazonas were recorded. In this study, we examined whether these phenomena were linked on a 2 to 9-day timescale, utilizing wavelet coherence analysis of both fire and lightning data. Our results indicate that these phenomena are linked (p < 0.05) for several weeks in both regions in both years. Additionally, correlations for 2022 were notably higher (above 0.90 versus 0.80) when the incidence of fires and lightning was higher, lending support to the notion of a relationship between these two events. Considering the periodicity characteristics of our results and that most fires in these regions are human-induced, we conclude that anthropogenic fires may affect lightning activity through aerosol-cloud particle interactions, with additional and not previously documented implications for climate change. Assuming the same is happening in other regions of the planet, we may face a new aspect not considered in the present global climate model projections. • Fire and Lightning activities in the Amazon rainforest are linked. • Smoke from fires may modulate the lightning activity in the Amazon region. • Anthropogenic fires may affect lightning activity through aerosol-cloud particle interactions. [ABSTRACT FROM AUTHOR]

Odonates are found in all freshwater environments, and are specially species rich in tropical freshwater ecosystems. Currently about 800 odonate species are known to Brazil, but only 29% of the Brazil territory have been surveyed for this group. Here we provide a species list with information on distribution and new records for Odonata in nine streams in Nova Xavantina, Mato Grosso, Central Brazil. We used the scan procedure with a fixed area for three days in each stream between 10:00 and 14:00h. We collected 1038 dragonfly specimens belonging to 67 species, which represents 8% of the known Brazil odonate fauna. Additionally, five new records for the study area are presented.

Studies with X-STR loci show population genetic substructure, which makes necessary the characterization of such markers in the different geographical and/or ethnic populations. Therefore, this study assessed the distribution and forensic efficiency of an X-STR decaplex system in the population of the State of Mato Grosso, as well as analysed the population structure of this State based on the aforementioned system. All X-STR markers were in Hardy-Weinberg equilibrium and linkage equilibrium, and the DXS6809 was the most informative marker. The power of discrimination value in females and males was 0.99999999995 and 0.9999994, respectively. Analysis of molecular variance indicated 1.10% ( p < 0.00001) of heterogeneity among Europeans, Africans, Brazilians and other Latin Americans, and in relation to such groups, the population of the State of Mato Grosso showed lower genetic variation when compared with the Brazilian group (−0.10%, p = 0.67327). The genetic distance analysis showed lower values of F (0.0004 ≤ F ≤ 0.00331), with non-significant p value ( p > 0.00024), between the populations of Mato Grosso and Mato Grosso do Sul, Paraná and the Southeast region of Brazil (except for one sample of Rio de Janeiro). F values with significant p values ( p ≤ 0.00024) were obtained between the population of Mato Grosso and Iberian, African and some Latin American populations. The X-STR decaplex system proved to be extremely useful in the population of the State of Mato Grosso, and the data obtained does not show the need for a specific forensic database for this State in relation to the Brazilian populations compared in this study, except for population of Rio de Janeiro. [ABSTRACT FROM AUTHOR]

While much effort has gone into studying the causes and consequences of water scarcity, the concept of water abundance has received considerably less attention in academic literature. Here, we aim to address this gap by providing a case study on the perceptions and political implications of water abundance in the Brazilian state of Mato Grosso. Combining a political ecology perspective on contemporary water governance (empirically based on stakeholder interviews with members of the state's water sector) with an overview of the environmental history of this hydrosocial territory, we argue, first, that water abundance has become a foundational element of Mato Grosso's identity, situated in the wider context of natural resource abundance more generally and second, that water abundance today is a contested concept witnessing discursive struggles around its political implications and meaning. More specifically, there is a clash between the dominant conceptualisation of water abundance as a foundation for rich economic, ecological, social, and cultural values and benefits, often espoused by members of the political and economic elite, e.g., for marketing purposes, and a more critical but less widespread conceptualisation of water abundance as a source of carelessness, lack of awareness, and poor water governance, typically put forth by more informed technical staff of the public sector and civil society activists. By providing a distinct treatment and discussion of the concept of water abundance, our research has relevance for other water-rich regions beyond the immediate regional context. [ABSTRACT FROM AUTHOR]

The article is focused on the role of relationships established through the godparenting of one's children within the socio-cosmological life of the Chiquitano indigenous people, who speak their own isolated language and live in southwest Mato Grosso, Brazil, close to the border with Bolivia. Based on ethnographic inquiry, the article shows that, in these indigenous people's view, godparenting (compadrio) is a constructed relationship, guided by certain rules and practices of commensality, ritual and sociability, and operating in the passage between "nature and culture" as well as in the person's humanization processes. [ABSTRACT FROM AUTHOR]

Values have been identified as important factors to estimate preferences within water governance and to assess the political legitimacy of water governance in a given time and location. The present study applies an interdisciplinary ‘value landscapes approach’ to water governance in the state of Mato Grosso, Brazil, using conflicts around the construction of the Paraguay-Paraná Waterway as a case study. Using material from interviews with major stakeholders in the region, the results demonstrate that supporters of the waterway hold similar ‘value landscapes’ around economic values of water, efficiency, order, and economic development, while opponents' ‘value landscapes’ centre on cultural and non-economic values of water, social justice, solidarity, conservation and tradition. This suggests that persistent conflicts around the Paraguay-Paraná Waterway are only an expression of much deeper value conflicts that are also relevant to other water governance issues. Moreover, values expressed through the planned construction of the Paraguay-Paraná Waterway disproportionately reflect values of powerful stakeholder groups such as the agribusiness sector, which significantly undermines its political legitimacy. [ABSTRACT FROM AUTHOR]

Since 2000, soybean production has gained increasing importance in Brazil, particularly in Southern Amazonia and the state of Mato Grosso, the largest producer in the country. This expansion has taken place through cropland extensification into natural ecosystems in the Amazon (tropical forest) and Cerrado (savanna) biomes with land transformation and occupation activity well documented by remote sensing. Guidelines from the UNEP/SETAC Life Cycle Initiative now allow for impact assessment of land transformation and occupation within a Life Cycle Assessment (LCA) to estimate potential impacts to biodiversity and ecosystem services. In this study, we apply these guidelines to soybean produced in 2010 in order to complement more traditional soybean LCAs with mid- and end-point impact assessment on biodiversity, erosion potential, water purification, groundwater recharge, biotic production and climate regulation potential in each of the Amazon and Cerrado biomes. In addition to providing regionalized characterization factors of land transformation and occupation in both Mato Grosso biomes, we estimate that one tonne of soybean produced in 2010 in the Amazon had greater impacts than when produced in the Cerrado. For the Amazon, total land transformation and occupation damage was estimated at $ 532 ton −1 and $ 260 ton −1 respectively, with estimates of $ 231 ton −1 and $ 153 ton −1 for the Cerrado. The largest contributors to these damage estimates came from the change in mechanical filtration properties of the soil followed by the land's climate regulation and biotic production potentials. The impact allocation to pasture as a transitional landscape in the establishment of cropland onto natural ecosystems diminished the soybean contribution through allocation of pasture to the beef production system, further adding to the land sparing argument for future cropland expansion in the region. [ABSTRACT FROM AUTHOR]

From being a net food importer in recent decades, Brazil is now considered a successful case of agricultural production and export. However, this image of triumph and efficiency helps to conceal growing socio-ecological impacts and mounting uneasiness. The complex and contradictory landscape of contemporary Brazilian agribusiness represent a relevant example of the advance of agro-neoliberalism, which is both an economic and technological process of agriculture modernization and intensification, in accordance to liberalizing pressures, and also a politico-ecological phenomenon centred on market-based solutions to old and new production, innovation and justification questions. Based on qualitative research and three fieldwork campaigns, the article discusses recent politico-economic adjustments particularly in the State of Mato Grosso, in the Centre-West region, which is fast becoming the main area of agribusiness activity in the country. Empirical results demonstrate that agro-neoliberalism has been promoted through inventive public-private associations not for the purpose of domestic food security, but primarily for capital accumulation and to support sectoral interests and macro-economic strategies. [ABSTRACT FROM AUTHOR]

The article analyzes the political-economy of the agriculture frontier in the Brazilian state of Mato Grosso to question the productivist argument commonly presented by the agribusiness sector. The assessment makes use of the category of rent considered as a proportion of exchange value diverted from production for the payment to the landowners and its class-based allies. The agriculture frontier in Mato Grosso had basically three main rent extraction periods: a first moment when rent was forged by the state apparatus (1970s–1980s), a second period with serious turbulence and a macroeconomic transition (1980s–1990s) and a third phase with more complex flows of rent due to the neoliberalization of agribusiness (since the late 1990s). At the frontier of agribusiness, agricultural activity depends on combined strategies of rent creation and rent extraction. Empirical results suggest that rent is more than just the extraction of value from the use of land, but there is a wider capture of value from the network of relations that maintain land in production. Rent derives from land through the formation of a powerful network state-landowners-private agroindustrial sector that provides the conditions for rent extraction. [ABSTRACT FROM AUTHOR]

Soils of a large tropical area with differentiated landscapes cannot be treated uniformly for ecological applications. We intend to develop a framework based on physiography that can be used in regional applications. The study region occupies more than 1.1 million km² and is located at the junction of the savanna region of Central Brazil and the Amazon forest. It includes a portion of the high sedimentary Central Brazil plateau and large areas of mostly peneplained crystalline shield on the border of the wide inner-Amazon low sedimentary plain. A first broad subdivision was made into landscape regions followed by a more detailed subdivision into soil regions. Mapping information was extracted from soil survey maps at scales of 1:250000-1:500000. Soil units were integrated within a homogenized legend using a set of selected attributes such as taxonomic term, the texture of the B horizon and the associated vegetation. For each region, a detailed inventory of the soil units with their area distribution was elaborated. Ten landscape regions and twenty-four soil regions were recognized and delineated. Soil cover of a region is normally characterized by a cluster composed of many soil units. Soil diversity is comparable in the landscape and the soil regions. Composition of the soil cover is quantitatively expressed in terms of area extension of the soil units. Such geographic divisions characterized by grouping soil units and their spatial estimates must be used for regional ecological applications.

A leishmaniose visceral é uma doença infecciosa endêmica em diversas regiões do Brasil, incluindo o Estado de Mato Grosso. Em Cuiabá, no período de janeiro de 2006 a dezembro de 2008, foi realizada investigação dos casos caninos de infecção por Leishmania sp. por meio de sorologia e citologia, enfocando a sua distribuição geográfica e correlacionando a ocorrência de casos de leishmaniose visceral humana. De 150 cães com suspeita da infecção, 57 (38%) foram sorológicos ou parasitologicamente positivos. Observou-se soroprevalência significativa (P≤0,05) nos bairros com renda per capita baixa, além de maior número de casos caninos na regional leste; no entanto, observou-se uma distribuição difusa da doença canina na cidade de Cuiabá, enquanto os casos humanos originaram principalmente na regional norte do município. Esse fato sugere que há risco em todo o município, devendo ser realizados novos estudos soroepidemiológicos, assim como a distribuição vetorial, que promovam maior conhecimento da infecção canina por Leishmania sp, de forma a se gerar medidas adequadas para o controle da doença.Visceral Leishmaniasis is an infectious disease endemic in several regions of Brazil, including the state of Mato Grosso. In Cuiabá, from January 2006 to December 2008, a research was performed in canine cases of infection with Leishmania sp. by serology and cytology, focusing on its geographical distribution, correlating to the occurrence of human visceral Leishmaniasis cases. From 150 dogs with suspected infection, 57 (38%) were serological or parasitologically positive. Seroprevalence was observed (P≤0.05) in districts with low per capita income, besides a larger number of canine cases in the East regional, but there was a diffuse distribution of the canine disease in the city of Cuiabá, in contrast to cases focused mainly on human in the northern municipality. This suggests risk throughout the municipality and further epidemiological studies should be carried out, as well as vector distribution, to promote better understanding of canine infection by Leishmania, in order to promote appropriate measures for disease control.

Even though millipedes display high plasticity in their reproductive strategies, they are poorly studied in the tropical region. The present study describes the biological cycle and reports the parthenogenetic reproduction of Poratia salvator Golovatch & Sierwald, 2000 under environmental conditions. Collections were carried out in Pantanal of Mato Grosso and in Várzea Grande, state of Mato Grosso, Brazil. The individuals were kept at room temperature in individual plastic pots. All 18 females used in the experiment reproduced parthenogenetically, resulting in a total of 699 young individuals. Of these, 18% survived until the adult phase. The lowest survival rate of P. salvator was recorded for the first developmental stage (46%). The mean duration of each developmental stage ranged between 6.8 ± 0.8 days for stage I and 14.9 ± 10.4 days for stage VI. The reproductive adult phase of females was the longest phase in the development, followed by the juvenile and pre-reproductive adult phases. The mean time of maturity was 75.1 ± 23.6 days. The mean duration of the total development was 66.1 ± 16.7 days. The number of eggs per nest varied between seven and ten, and the emergence of young individuals occurred after an average of 9.9 ± 1.4 days. Sexual proportion was 1 male:139.8 females, which indicates a tendency towards a parthenogenetic reproduction in this species.

Caracterizou-se a brucelose bovina em Mato Grosso por meio de um estudo transversal realizado em 2003 para auxiliar na implementação do Programa Nacional de Controle e Erradicação da Brucelose e Tuberculose. No Estado, estratificado em quatro circuitos pecuários, foram amostrados 13.684 animais, provenientes de 1.152 rebanhos. O protocolo de testes utilizado foi o da triagem com o teste do antígeno acidificado tamponado e os soros reagentes foram testados pelo 2-mercaptoetanol (ME) e concomitantemente retestados pelo teste de Rosa Bengala para resultado conclusivo. As prevalências de focos e de animais infectados foram: 41,2% [38,0-44,4%] e 10,2% [7,4-13,1%], respectivamente. Nos circuitos produtivos, as prevalências de focos foram 36,9% [29,2-45,2%], 27,2% [22,8-32,1%], 40,4% [38,8-46,2%] e 50,3% [44,5-56,1%]; e as prevalências de animais 7,9% [3,0-12,9%], 4,1% [2,8-5,4%], 8,1% [5,2-11,1%] e 15,3% [9,2-21,3%], respectivamente, para os circuitos 1, 2, 3 e 4. Os fatores de risco (odds ratio, OR) associados à condição de foco no Estado foram: exploração de gado de corte (OR= 1,8 [1,2-2,5]), exploração mista (OR=1,8 [1,2-2,7]), número de fêmeas no rebanho de 11 a 50 (OR=4,8 [1,1-20,8]), número de fêmeas no rebanho acima de 51 (OR=6,8 [1,6-29,0]), ocorrência de aborto (OR=1,7 [1,3-2,2]). A brucelose está homogeneamente distribuída no Estado, o que permite uniformidade de medidas sanitárias. Adicionalmente, sugere-se a intensificação da vacinação de fêmeas para todo o Estado.A study to characterize bovine brucellosis in the State of Mato Grosso was carried out in 2003 in order to support the implementation of the National Program for the Control and Eradication of Bovine Brucellosis. The State was divided into four productive regions, and 13,684 bovines from 1,152 herds were sampled. The serum samples were screened for antibodies to Brucella spp. by the Rose-Bengal test (RBT) and all RBT-positive sera were re-tested by the 2-mercaptoethanol test (2-ME), and again by RBT for confirmation. The prevalence of infected herds and animals in the State of Mato Grosso were 41.2% [38.0-44.4%] and 10.2% [7.4-13.1%], respectively. In the productive regions, the prevalence of infected herds were 36.9% [29.2-45.2%], 27.2% [22.8-32.1%], 40.4% [38.8-46.2%], and 50.3% [44.5-56.1%], respectively; and the prevalence of infected animals were 7.9% [3.0-12.9%], 4.1% [2.8-5.4%], 8.1% [5.2-11.1%], and 15.3% [9.2-21.3%], respectively, for regions 1, 2, 3, and 4. The risk factors (odds ratio, OR) associated with the presence of the infection in the State were: beef cattle farming (OR=1.8 [1.2-2.5]), mixed (beef and dairy) cattle farming (OR=1.8 [1.2-2.7]), farms with 11 to 50 females (OR=4.8 [1.1-20.8]), farms with more than 51 females (OR=6.8 [1.6-29.0]), and occurrence of abortion (OR=1.7 [1.3-2.2]). Given that brucellosis is homogeneously distributed in the State, uniform sanitary measures might be adopted. As a homogeneous additional measure for the State, the intensification of female vaccination is suggested.

The article constitutes an investigation into the renovation of industrial-scale agriculture in Brazil and the persistence of perverse practices established in earlier politico-economic periods. The steady expansion of agribusiness in the country constitutes a relevant chapter of the world-ecology of neoliberal capitalism that connects, and transforms, national and local forms of socio-ecological interaction. The current text pays particular attention to ideological constructions, hidden tensions and evolving interventions of the state apparatus. It is focused on the frontier of agribusiness expansion, in particular the production of soybean in State of Mato Grosso. Agribusiness has many innovative features when compared with previous and nationalistic phase of agriculture modernisation, but it also betrays the strong elements of social exclusion, authoritarianism and deception. Instead of agrarian reform and local food production, as demanded by large proportions of the Brazilian population, the prevailing solution, jointly promoted by the public and private sector, was to intensify agribusiness activities according to hegemonic, top-down priorities. [ABSTRACT FROM AUTHOR]

What defines the urban? And can the non-urban necessarily always be classified as rural? Neil Brenner, Director of the Urban Theory Lab at Harvard University Graduate School of Design, reflects on the lack of an overarching theory to describe these realms, and argues that what we call the countryside or the hinterland has become key to the process of capitalist urbanisation. [ABSTRACT FROM AUTHOR]

The intricacy of global agri-food business today is, at once, product and also co-producer of the hegemonic modernisation of capitalism according to the discourse and the strategies of neoliberalism. The expansion of neoliberal agribusiness, situated in the wider context of the politico-ecological economy of contemporary capitalism, is considered with the assistance of an original analytical framework structured around three explanatory categories: displacement (sectoral and spatial transformations), financialisation (the priority of making money over agriculture outcomes) and mystification (dissimulation of the neoliberalising trends and of associated risks and disputes). The proposed analytical framework has significant implications for research in human geography, especially within politico-economy and neoliberalism studies, to the extent that it encapsulates interdependent processes that are together responsible for the revitalisation of agribusiness and for the legitimisation of global agri-food markets. The framework is then used to highlight the historico-geographical repercussions of neoliberalised agribusiness in Brazil, which was an element of the conservative responses to the crisis of accumulation caused by the exhaustion of developmentalist policies and state-led entrepreneurialism. Brazilian agribusiness seems to thrive on a peculiar combination of tradition and modernity, as its apparent success betrays a clear attempt to temporarily placate the structural contradictions of capitalist agriculture while tensions and reactions become increasingly evident. [ABSTRACT FROM AUTHOR]

There are several specific complexes belonging to the genus Triatoma Laporte, 1832, which are generally associated to specific geographic areas. Recent publications have linked the oliveirai complex to ecosystems of Mato Grosso, which are also present in other Brazilian states and even in other bordering countries as eastern Paraguay. The study of the abundant material collected during the last years allowed the description of several new species of the oliveirai complex: T. jurbergi Carcavallo, Galvão & Lent, 1998; T. baratai Carcavallo & Jurberg, 2000 and T. klugi Carcavallo, Jurberg, Lent & Galvão, 2001. Another new species belonging to the same complex is described here as T. vandae sp.n. It originates from the state of Mato Grosso, and has been reared in the insectary of the Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Departamento de Entomologia, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro.

Peixoto de Azevedo is located in the north of State of Mato Grosso, where environmental alterations led to an outbreak of American cutaneous leishmaniasis in the 80s. The parasite from patients was characterized as Leishmania (V.) braziliensis. The aim of this study is to contribute to the sand fly ecology of Central-West Brazil. Captures were carried out monthly using CDC light traps. Twenty-six species of sand fly were characterized; among which Lutzomyia (Lutzomyia) spathotrichia, L. runoides and L. (Psychodopygus) llanosmartinsi were recorded in the State of Mato Grosso for the first time. L. (Nyssomyia) whitmani, L. (N.) antunesi, L. (L.) spathotrichia, L. (P.) c. carrerai, L. (P.) complexa, L. (P.) lainsoni and L. (N.) umbratilis constituted 92.4% of the local fauna, among which L. (N.) whitmani and L. (N.) antunesi, accounting for about 53% of the fauna at the stations of capture. On the vertical distribution of sand flies on the Beira-Rio Farm, L. (N.) whitmani and L. (N.) antunesi prevailed at ground level and in the canopy, respectively, whereas on the BR-080, L. (P.) llanosmartinsi was prevalent on the ground and L. (P.) c. carrerai, in the canopy. It is suggested that L. (N.) umbratilis is the local vector.

O presente trabalho tem como objetivo fazer o levantamento etnobotânico de plantas com usos terapêuticos no município de Santo Antonio do Leverger, MT, e estimar a diversidade de espécies usadas. Foram entrevistados residentes adultos de ambos os sexos, junto com os quais foram coletadas as plantas, depositadas no Herbarium Rioclarense (HRCB). Identificaram-se 228 espécies, pertencentes a 73 famílias; 56% delas crescem espontaneamente em ambientes naturais ou antropicamente modificados, 41% são cultivadas e 3% são compradas. Os índices de diversidade encontrados comparam-se aos mais altos registrados na literatura para plantas medicinais em outras áreas tropicais. A riqueza e diversidade das plantas espontâneas podem espelhar até certo ponto a riqueza e diversidade de espécies no ambiente, enquanto tais parâmetros para as espécies cultivadas estariam mais ligados a fatores sócio-culturais que promovam a introdução de novas plantas e informações de uso a partir de fontes externas. Sugere-se que quando comunidades tradicionais se tornam mais expostas à sociedade nacional, o número de espécies e o conhecimento acerca de seu uso podem sofrer inicialmente um acréscimo, por aportes externos; mas, com o aprofundamento do contato, e as mudanças sócio-econômicas decorrentes, a tendência será que as plantas usadas com fins terapêuticos restrinjam-se às espécies cultivadas e invasoras cosmopolitas.This work describes an ethnobotanical survey of medicinal plants in Santo Antonio do Leverger Municipality, Mato Grosso State, Brazil and estimates the diversity of species with therapeutic use. Adult dwellers, male and female, were interviewed and plant gathering undertaken with their assistance. Voucher specimens were deposited at the Herbarium Rioclarense (HRCB). 228 species were identified, belonging to 73 families; 56% of the species grow spontaneously in natural and anthropically modified habitats, 41% are cultivated and 3% are purchased. Diversity indexes are among the highest ones reported in literature for medicinal plants in other tropical areas. Richness and diversity of spontaneous species may mirror to certain extent environmental richness and diversity, whereas for cultivated species, these measures could be linked to socio-cultural factors enhancing introduction of new plants and use information from outside the area. It is suggested that when traditional communities become more exposed to society at large, species number and knowledge about their use may at first increase, by foreign input; but, with the socio-economic changes that come about over time, plants used for therapeutic aims will be limited to the cultivated species and cosmopolite weeds.

The objective of this study was to report for the first time infection by Hepatozoon spp. and Babesia spp. in 10 dogs from the city of Cuiabá, State of Mato Grosso, central-western Brazil. A pair of primers that amplifies a 574 bp fragment of the 18S rRNA of Hepatozoon spp., and a pair of primers that amplifies a 551 bp fragment of the gene 18S rRNA for Babesia spp. were used. Six dogs were positive for Babesia spp., and 9 were positive for Hepatozoon spp. Co-infection of Babesia spp. and Hepatozoon spp. was seen in 5 dogs. Sequenced samples revealed 100% identity with B. canis vogeli, and H. canis. This is the first molecular detection of H. canis in domestic dogs from Cuiabá. Additionally, it is described for the first time the presence of B. canis vogeli circulating among dogs in Cuiabá.O objetivo deste estudo foi relatar pela primeira vez a infecção por Hepatozoon spp. e Babesia spp. em cães domésticos provenientes da cidade de Cuiabá, estado de Mato Grosso. Foram utilizados pares de primers que amplificam um fragmento de 574 pb do gene 18S rRNA de Hepatozoon spp., e 551 pb do gene 18S rRNA para Babesia spp. Dos 10 cães amostrados, 6 apresentaram-se positivos para Babesia spp., e 9 foram positivos para Hepatozoon spp. pela PCR. Co-infecção entre Babesia spp. e Hepatozoon spp. ocorreu em 5 cães. As amostras revelaram 100% de identidade com B. canis vogeli, e as amostras que foram positivas para Hepatozoon spp. foram 100% idênticas a H. canis. Esta é a primeira identificação molecular de H. canis em cães domésticos em Cuiabá. Adicionalmente, descrevemos pela primeira vez a presença de B. canis vogeli circulando entre cães em Cuiabá.

Competitive interactions among species with similar ecological niches are known to regulate the assembly of biological communities. However, it is not clear whether such forms of competition can predict the collapse of communities and associated shifts in ecosystem function in the face of environmental change. Here, we use phylogenetic and functional trait data to test whether communities of two ecologically important guilds of tropical birds (frugivores and insectivores) are structured by species interactions in a fragmented Amazonian forest landscape. In both guilds, we found that forest patch size, quality, and degree of isolation influence the phylogenetic and functional trait structure of communities, with small, degraded, or isolated forest patches having an increased signature of competition (i.e., phylogenetic and functional trait overdispersion in relation to null models). These results suggest that local extinctions in the context of fragmentation are nonrandom, with a consistent bias toward more densely occupied regions of niche space. We conclude that the loss of biodiversity in fragmented landscapes is mediated by niche-based competitive interactions among species, with potentially far-reaching implications for key ecosystem processes, including seed dispersal and plant damage by phytophagous insects. [ABSTRACT FROM AUTHOR]