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Replacement Style Mineralizations. The paper presents occurrence and chemistry of ore and gangue minerals, results of fluid inclusion microthermometry and sulfur isotopes, and discussed the evolution of mineralizing fluids. The polymetallic mineralization was divided into two stages; the early Cu-Zn-(Pb) and late Cu-Zn-Pb-(Mn) mineralization stages, which are associated with a granodioritic porphyry stock and quartz porphyry sills, respectively. [Extracted from the article]

Governments in the Global South have recently started to align their public procurement regulations considering Green Public Procurement (GPP) guidelines to achieve Sustainable Development Goal 12. In this context, it is important to establish environmental criteria to help decision making after analyzing the variety of options available in the market. Thus, using as examples two of the most acquired products in public procurement in Peru: Medium‐density particleboard melamine furniture and paper offset, the aim of this paper is to determine the main environmental hotspots and therefore show the path to foster GPP in Peru. To achieve this goal, a Life Cycle Assessment was carried out considering it is a suitable environmental management tool to quantify environmental impacts. For this, a set of scenarios were modeled and compared for each of the two products selected, covering different geographical and technological options that are currently purchased by the Peruvian government. Results demonstrated that it is possible to attain considerable reductions in the environmental impact of the products analyzed if the main critical stages throughout their life cycle are identified and adequate solutions are applied to avoid burden shifting. Moreover, we argue that it is important for developing countries to carry out case‐specific life‐cycle inventories as they provide higher‐quality information based on the particular characteristics of regional or local industries, allowing the determination of more realistic environmental impact mitigation benchmarks. Nevertheless, the inclusion of lifecycle‐based criteria in GPP must be performed cautiously, avoiding command and control regulations, as numerous challenges remain in terms of capacity building, environmental awareness, and environmental information, and transparency in emerging and developing economies. Integr Environ Assess Manag 2022;18:1206–1220. © 2021 SETAC Key Points: Latin American governments are currently aligning their public procurement regulations with Green Public Procurement (GPP) guidelines to comply with international environmental recommendations, such as Sustainable Development Goals (SDGs) or nationally determined contributions (NDCs).Considering that these nations struggle to develop empirical data to support GPP initiatives, Life Cycle Assessment (LCA) is presented as an attractive environmental management tool to quantify environmental impacts and orient GPP regulations.Two of the most acquired public procurement products in Peru, melamine furniture and paper offset, were evaluated using LCA to identify environmental hotspots, the sensitivity of the results through scenario analysis, and improvement actions to mitigate greenhouse gas emissions and other environmental impacts.Despite the existing challenges linked to building environmental information in Peru, case‐specific life‐cycle inventories for regional industries have proved to allow the determination of realistic environmental impact mitigation benchmarks to include in GPP. [ABSTRACT FROM AUTHOR]

Copyright of People & Nature 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.)

Latin America (LATAM) plays an important role in the world's production of aquatic animals and is the second most productive region in the world. Chile, Ecuador, Brazil, Mexico, Colombia, and Perú contribute 87% of LATAM aquaculture production. The fish welfare in aquaculture is of increasing public concern globally, and LATAM is no exception, growing in importance for fish farmers, authorities, and scientists. Although the topic is somewhat controversial, the welfare status of farmed fish has direct implications for their production and the sustainability of the industry. Therefore, this study analyses scientific papers on animal welfare in farmed fish, from the six countries in LATAM with the highest aquaculture production. The main objectives were to quantify the number of papers published between 2000 and 2023 on fish welfare by using scientific databases. A total of 285 papers were found for the period analysed. The country with the largest number of publications was Brazil (75.79%), followed by Chile (13.33%), Mexico (7.02%), Peru (1.75%), Ecuador, and Colombia (1.05%). Nile tilapia was the most studied species, appearing in 30.18% of the publications, with most of the studies mainly dealing with nutrition (32.28%). The growth of aquaculture is leading to joint efforts to generate knowledge on welfare issues, especially in poorly studied species with high production, to create policies that help minimize welfare risks. Given this, the insights generated by this review could be a useful addition to approaches investigating the trends and concepts of fish welfare in LATAM. [ABSTRACT FROM AUTHOR]

Anthropologists have extensively examined the material politics of bureaucratic rule and technical expertise. But ethnographic analysis must also attend to the politics of mathematical abstractions that cannot be reduced to any specific kind of materiality. A key site to appreciate such politics is the georeferentiation of Indigenous property polygons in Peru's Amazonian region of Loreto. In the context of climate change and biodiversity loss, both the Peruvian state and Indigenous communities have pinned their hopes on mathematically stabilizing Indigenous property polygons. But these hopes are haunted by the confusing accumulations of informal attempts to make sense of these territories over time. To appreciate these accumulations, the state engineer (ingeniero) can serve as a privileged prism. Thinking through polygons provides an opportunity to interrogate emerging forms of Indigenous territoriality in Amazonia, as well as the contentious politics of mathematical abstractions in contemporary global environmental governance. [ABSTRACT FROM AUTHOR]

Copyright of Antipode 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.)

A by‐product of energy‐dispersive X‐ray fluorescence (EDXRF)‐analysis consists of using the ratios of selected X‐ray peaks to determine the thickness of multilayered objects. Three different methods were developed in the past, all because the two main K or L X‐lines from an EDXRF spectrum emitted by a chemical element have a distinct energy and are differently attenuated by an overlying layer. This specific subject has many papers dedicated, but only a few considerations were devoted to the limits of these methods, that is, the range, for example, of gold thickness that can be usefully determined by each method. This paper defines these limits in the specific case of thin gilding (with d < 1 μm). Three typical situations were considered, and the following artefacts were studied: two artefacts on gilded lead, where the gold leaf is superimposed to a white lead pigment, both in the painting "La Fornarina" of Raphael, dated 1520 AD, and in the imperial carriage of Dom Pedro II emperor of Brazil. In this last case, the white lead pigment was painted over the wood structure of the carriage; four artefacts on gilded copper, three crowns and a pendant, from the tomb of the Lady of Cao, from the Moche civilization of the North of Peru, dated around 350 AD; finally, an artefact on gilded silver, a vase from the Chavín civilization of the North of Peru, dated around 1000‐200 BC. [ABSTRACT FROM AUTHOR]

A complete, fluvial stratigraphic record for the last glacial period of the Western Andes in Peru is not available due to preservation issues and spatial variability in sedimentation. Deposits are typically restricted to incomplete records of fluvial terraces or localised occurrences of alluvial fans and landslides. These landforms are thought to have formed under a regime of climate cyclicity controlling increases in precipitation. Because of the fragmented preservation of these deposits, as well as dating uncertainties, it remains unclear if orbital climate cycles, such as the precession cycle, or suborbital cycles, such as the wet Heinrich events, are driving Andean sedimentation. In this paper, we try to answer this question through a sedimentological–stratigraphical analysis of a much more complete sedimentary sequence than usually found in the region. We present the results of a grain size analysis of 5000 clasts and 13 new luminescence ages of a 52‐m‐long, stratigraphic section of the Lima fluvial fan in Peru. Bayesian age–depth modelling resulted in a robust chronostratigraphic framework and derived sedimentation rates. The stratigraphic record registered sedimentation from 121.7 ± 4 to 6.3−1.6+1.5 ka. Three major sedimentation periods occurred between 121.7 to 110−5+4, 87 ± 1 to 67−3+2, and 31−3+4 to 6.3−1.6+1.5 ka. These periods registered various unconformities and coarsening–fining upward sequences which chronologically correlate to suborbital pluvial periods, recognised from speleothems and lake records, that drove fluvial deposition. They also correlate with the timing of other recognised sedimentation events throughout the Western Andes. Marine regression resulted in fan progradation and not in incision. The Lima fan stratigraphy represents therefore the most complete, last glacial fluvial record for the Peruvian Western Andes to date and it highlights the potential of fluvial fans as recorders of suborbital climate variability. [ABSTRACT FROM AUTHOR]

Consequences of the mesoscale Thermal FeedBack (TFB) on the ocean dynamics are studied in the South‐East Pacific (SEP) using a high‐resolution regional ocean–atmosphere coupled model. Three simulations are compared: the first one is a fully coupled simulation. In the second one, the TFB has been removed with an online smoothing of the Sea Surface Temperature (SST) conditions used by the atmosphere. In the third one, to disentangle the impact of the nearshore and the offshore TFB, the smoothing is only applied in the offshore region. In the SEP, the coastal upwelling cold tongue constitutes a permanent mesoscale SST pattern. We show that this SST pattern alters the coastal wind structure, reducing the coastal upwelling‐favorable wind intensity. So, the nearshore TFB reduces the coastal surface current and the vertical velocities. As a result, the Eddy Kinetic Energy (EKE) generation by baroclinic conversion is also weakened. In the offshore region, on the contrary, the oceanic mean state is not affected by the TFB and only the EKE is weakened. Composites above the coherent eddies show that the heat flux response to the mesoscale SST anomalies is responsible for the mesoscale activity weakening over the whole studied area. Although the wind response to the SST anomalies has a very weak mean impact on the EKE generation through wind work, we show that it strongly modifies the mean oceanic vertical velocity anomalies over the coherent eddies. Plain Language Summary: The ocean dynamics is usually seen as driven by the atmosphere. However, the influence between the ocean and the atmosphere is mutual and the oceanic surface conditions feedback on the atmosphere. In this paper, we focus on the response of the atmosphere to the sea surface temperature mesoscale structures (structures that ranges from a few tens of km to a few hundred km). This response, called Thermal Feedback (TFB), is modeled with a high‐resolution ocean‐atmosphere coupled model to investigate its consequences on the oceanic dynamics in the South‐East Pacific. This region is characterized by a wind‐driven upwelling of sub‐surface waters near the coast, forming a sea surface coastal cold tongue. We show that this structure alters in return the coastal wind structure, which contributes to reduce the upwelling and the surface current. The generation of mesoscale structures, such as coherent eddies and filaments, is also reduced. The mesoscale structures are also weakened in the offshore region. We analyze the atmospheric response above the coherent eddies and show that the heat flux response to the SST anomalies is responsible for the eddy damping. Vertical velocities are also created in the eddy by the wind response to the SST anomalies. Key Points: Mesoscale thermal feedback decreases the mean coastal upwelling‐favorable wind, surface current and nearshore eddy generationMesoscale thermal feedback on the heat fluxes decreases the coherent eddy intensity through baroclinic conversionCoherent eddy mean vertical velocity is strongly modified by the mesoscale thermal feedback [ABSTRACT FROM AUTHOR]

Analysing data from educational tests allows governments to make decisions for improving the quality of life of individuals in a society. One of the key responsibilities of statisticians is to develop models that provide decision‐makers with pertinent information about the latent process that educational tests seek to represent. Mixtures of t$$ t $$ factor analysers (MtFA) have emerged as a powerful device for model‐based clustering and classification of high‐dimensional data containing one or several groups of observations with fatter tails or anomalous outliers. This paper considers an extension of MtFA for robust clustering of censored data, referred to as the MtFAC model, by incorporating external covariates. The enhanced flexibility of including covariates in MtFAC enables cluster‐specific multivariate regression analysis of dependent variables with censored responses arising from upper and/or lower detection limits of experimental equipment. An alternating expectation conditional maximization (AECM) algorithm is developed for maximum likelihood estimation of the proposed model. Two simulation experiments are conducted to examine the effectiveness of the techniques presented. Furthermore, the proposed methodology is applied to Peruvian data from the 2007 Early Grade Reading Assessment, and the results obtained from the analysis provide new insights regarding the reading skills of Peruvian students. [ABSTRACT FROM AUTHOR]

Forest landscape restoration (FLR) is the intentional intervention in the forest landscape to recover biological diversity and ecosystem functions, improving human well‐being in altered landscapes. The general objective of the present study was to understand the state of the art of research that potentially contributes to FLR practices in the Amazon. We carried out a comprehensive literature review using the Web of Science platform, considering papers published between 2000 and 2020 to understand the state of knowledge on restoration strategies that support FLR in the nine Amazonian countries and the nine states of the Brazilian Amazon. We selected 362 articles that met our inclusion criteria after analyzing 1,205 articles. We found that Brazil, followed by Peru, Colombia, and Ecuador, has the largest number of published articles on FLR. Agroforestry (37.88%) and natural regeneration (30.35%) were the most common FLR strategies across all countries and Brazilian states. Most studies investigated ecological functioning (33%), vegetation structure (31%), and tree diversity (15.5%). Forest restoration strategies (forest plantation, natural regeneration, or silviculture) are reported in most studies (57.23%), in comparison to restoration strategies of agricultural lands (agroforestry systems or improved fallow; 42.77%). We found an increase in publications describing restoration strategies over time in the Amazon, especially from 2012 onwards, with a peak in 2018. Future studies in the Amazon region should address socioeconomic issues and expand the geographic scope within the Amazon, as well as the FLR strategies and the ecosystem attributes investigated. [ABSTRACT FROM AUTHOR]

A confluence of concerns about tropical forest loss, global warming, and social inequality drive calls to transform land use governance. Yet there is widespread debate about what must be transformed, by whom, and how. The increasing equation of transformation with ambitious, quantitative global targets, such as "net zero emissions" or "zero deforestation" has gained widespread appeal as a means to inspire action and hold powerful actors to account. However presenting targets themselves as the end goals of transformation, obscures both the means of achieving them and the social and environmental values that legitimate them. The escalation of targets for land use, in particular, is disconnected from targeted geographies, lacks accountability to socially diverse knowledge and priorities, and is readily appropriated by powerful actors at multiple scales. This paper argues instead, for an equity‐based approach to transformation that reveals how unequal power distorts both the ends and the means of global governance. We illustrate this argument with five case‐study "vignettes" in Indonesia, Ghana, Peru, and Brazil that reveal how de‐contextualized, target‐based thinking has reinforced state and corporate control over resources at the expense of local access, while largely failing to deliver the promised environmental outcomes. We conclude that equity‐focused, case study research is critical not only to unpack the local consequences of pursuing global targets, but also to make visible alternative efforts to achieve deeper socio‐environmental transformations. [ABSTRACT FROM AUTHOR]

The detailed study of diatom laminations conducted by means of backscattered electron imaging serves as tool to unravel details of past ocean dynamics. In this paper we apply this method to the analysis of the diatomites of Cerro Los Quesos, Upper Miocene Pisco Fm, Peru. Numerous studies have been conducted on the Pisco Fm; however, a focus on its paleoceanographic significance is still lacking. In this work, we provide information on the oceanographic setting in the area at the time of diatomites deposition. The high abundance of deep‐living Coscinodiscus laminae, proceeded by either a mixed lamina or a terrigenous one, let us hypothesize a deep position of the thermocline during the deposition of the Pisco diatomites; together with the scarcity of Chaetoceros Hyalochaete spp. resting spores, this evidence confutes the belief that equals high biogenic silica content in marine sediments with enhanced upwelling. Conversely, the depositional setting of the Pisco Fm diatomites is more similar to what is known as "permanent El Niño" (or "El Padre") state, meaning a constant weakened upwelling (or upwelling of nutrients‐poor waters). Climate modeling warns that an increase in atmospheric CO2 may lead to this mean state in the near future. Thanks to this study we also obtained refined information on the diatomites sedimentations rates. The comparison of the Pisco diatomites sedimentation rates with those of Quaternary diatomites gave strength to the hypothesis that the formation of the vertebrate Lagerstätte may have been enhanced, among others, by the so‐called "impact‐burial" mechanism. Plain Language Summary: Some sedimentary rocks are formed by the remains of small organisms. This is the case of diatoms, microscopic algae with a siliceous exoskeleton. As we know the ecological conditions of the modern oceans in which different diatom species live, when we found them in sedimentary rocks, we can infer the ecological conditions of the oceans millions of years ago. Here, we present the species that we found in some Peruvian rocks, the so‐called Pisco Formation, which dates back to 7/6 Million of years ago. Different species are preserved in these rocks in the same order in which they bloomed, so that we can identify small "laminae" (horizontal strips in the rock with thicknesses smaller than 1 mm) for each blooming season. The species that we recognize are those that today bloom during "El‐Niño," a climatic warm condition that causes loss of large fishery stocks, inundations and droughts. This small finding helps us hypothesize how climate may evolve if the Earth's temperatures keep on rising. Also, the Pisco formation is famous because of their huge content of fossil whales and dolphins, thus the study of this rock helps us understand how these large mammals got preserved trough millions of years. Key Points: Laminae of the Upper Miocene diatomaceous Pisco Formation reveal that the fall dump mechanism regulated marine export productionThe predominance of fall dump over upwelling implies a drop of the temperature gradient between the Western and Eastern PacificEvidences highlight a need of caution when using biogenic silica as a proxy for paleo upwelling [ABSTRACT FROM AUTHOR]

Throughout the global South, conditional cash transfer programmes (CCTs) are used to promote socially inclusive development. CCTs are widely evaluated for their capacity to build children's human capital. In contrast, this paper aims to hold 'social inclusion' to account by elucidating the impacts of Peru's CCT 'Juntos' on the poor, rural mothers who are expected to meet programme conditions. Grounded in extensive ethnographic research in households, clinics, schools, and village halls, the paper interrogates the work of social inclusion in spaces where uneven development manifests itself in privation. Considered in light of critical feminist theories of performativity and social reproduction, the findings shed light on a far less optimistic reality for the work of social inclusion. This paper contributes a rich empirical account to critical literature on cash transfers and the discourses that drive them, and suggests that the circumstances under which women are required to fulfil programme conditions challenge the substance of contemporary 'inclusive' development. [ABSTRACT FROM AUTHOR]

New World households engaged in multiple forms of exchange: markets, redistribution, gifting, debt, reciprocity, and more. Determining the degree of prominence of each of these forms in ancient economies gives clues to the economic basis of leadership and the daily lives of households. A major method for inferring forms of exchange from household assemblages is Hirth's distributional approach. This paper applies the distributional approach to domestic inventories in two places where markets are unlikely: the Preclassic Maya in and around Ucí, Yucatan, Mexico; and Inka‐period settlements in the Upper Mantaro Valley, Peru. The data presented in this paper show an equitable distribution of fancy pottery among households of both high and low socio‐economic status in both areas. These somewhat unanticipated results could provoke several interpretations. At one extreme we could posit an important role for market exchange. At the other extreme, we could reject the logic of the distributional approach. This paper argues for a more circumspect track that uses additional lines of evidence to make inferences about incipient market exchange coincident with the rise of centralized leadership in the Maya area and poorly documented, possibly concealed market exchange nestled within Inka command economies. [Preclassic Maya, Inka economies, market exchange, households] [ABSTRACT FROM AUTHOR]

Summary: Motivation: Latin America has witnessed massive increases in production and consumption of chicken meat over the last 60 years and well beyond its share of the developing world's population. Chicken is now a major source of livestock protein in regional diets; leads livestock production in 25 out of the region's 33 countries; production, slaughtering, and sales provide millions of jobs. Purpose: To analyse growth rates for chicken meat in Latin America, why they have differed, how the role of innovation and development policies contributed to bringing about this growth, in turn leading to the patterns of governance of these activities today. Methods and approach: This study used a modified value chain framework along with FAO statistics, national data, published and unpublished studies to analyse macro‐level developments and their linkages to shifts in the organization of activities in the value chain for chicken from pre‐production through to consumption and trade from past to present. Findings Different natural resource endowments, demographics, and dietary preferences combined with frequent innovations and an array of policy measures led to a spectacular surge in output and productivity, lower costs, and facilitated a steady rise in consumption. As part of that growth, these activities became increasingly concentrated in Brazil, Mexico, and Peru and within those countries in a few very large firms. Their operations expanded in the value chain beyond the farm gate, across the region, and in some cases around the world. Policy implications: This paper has implications for greater transparency in grower contracts, better working conditions for slaughterhouse workers and bird catchers, more environmentally and bird‐friendly chicken production, accelerated adoption of practices as per Principles for Responsible Investment in Agriculture and Food Systems in the value chain for broilers in Latin America and the Caribbean, and improved enforcement of laws and regulations governing the technical and financial operations of value chains for chicken, along with renewed collaboration among government authorities to that effect. [ABSTRACT FROM AUTHOR]

Climate is a powerful driver of agricultural and natural systems, and spatial climate datasets are currently in great demand. This is especially true in the Arequipa Department of Peru, a region with low seasonal precipitation, remarkable topographic variability, and significant water demand in a highly managed water system. This paper presents the Arequipa Climate Maps (ACM) datasets, a high resolution (1 km) spatial 30‐year (1988–2017) climate dataset for the Arequipa Region, in Peru. Four interpolation methods, and combinations of those methods, were tested to produce 30 years of daily precipitation, maximum and minimum air temperature: Ordinary Kriging (OK), Thin Plate Splines (TPS), Regression Kriging (RK), and Regression Thin Plate Splines (RTPS). The mixed method RTPS‐TPS and RTPS using locally fitted polynomial and potential regressions were found to best represent the spatial variability of precipitation and daily extreme temperatures, respectively, and helped compensate the bias resulting from the lack of weather stations at higher elevations. These methods were then selected to create the ACM dataset, which contains climate maps of 30‐year annual and monthly climate normals (ACM–Normals) and 30 years of annual, monthly, and daily climate maps (ACM–YMD). In addition, insights on weather station gap filling in mountainous areas and bias corrections for avoidance of anomalous precipitation and to assure consistency between annual, monthly and daily data are presented, together with discussion about the quality and limitations of the dataset, and its comparison with other datasets. [ABSTRACT FROM AUTHOR]

Background: Probiotics in allergic rhinitis (AR) have shown improvement in clinical and quality of life scores, whereas the role of synbiotics in the treatment of AR has been poorly investigated. The purpose of this study was to evaluate the clinical efficacy of synbiotics in children with AR. Methods: An observational, prospective cohort study of pediatric outpatients with AR from a private medical center in Peru (2021) was conducted. At baseline, patients who were prescribed synbiotics during routine and those who were not (controls) recruited and followed up on Days 30, 60, and 90 of follow‐up. Clinical efficacy was assessed with differences in Visual Analogous Scale (VAS), Total Nasal Symptom Score (TNSS), Rhinitis Control Assessment Test (RCAT), and the Pediatric Rhinoconjunctivitis Quality of Life Questionnaire (PRQLQ) scores between groups at follow‐up. Mean differences ± standard deviation (SD) and 95% confidence intervals (95% CI) are reported. Results: Two hundred and fifteen participants were analyzed. Compared to controls (n = 115), those who used synbiotics (n = 100) had significantly lower VAS (mean difference 1.3; 95% CI: 0.8–1.8), TNSS (mean difference 1.1; 95% CI: 0.5–1.7) and higher RCAT scores and PRQLQ scores (mean difference 2.2; 95% CI: −3.3 to −1.2) and (mean difference 7.0; 95% CI: 3.1–10.9), respectively, at Day 90 of follow‐up Conclusions: This paper reports significant improvement in clinical (VAS, RCAT, TNSS) and quality of life (PRQLQ) scores of small and large sizes, respectively. These preliminary findings support the need of future trials to assess the role of synbiotics in children with AR. [ABSTRACT FROM AUTHOR]

Copyright of People & Nature 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.)

Copyright of Reading Research Quarterly 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.)

This paper critically engages with the implications of the "affect turn" in the geographies of development and volunteering. By way of considering "affective life" at a residential youth care centre in Peru through an ethnographic study, we aim to contribute to current discussions of "(self‐)transformation" taking place through affectivity in the experience of volunteering. Conceptually, our approach to investigating "affective life" and volunteering involves two steps. First, we critically review this body of work's recent focus on the individualistic mode of volunteer self‐transformation in encountering "vulnerable others." We identify the need to think about affect and embodiment also from the perspectives of the "vulnerable" groups whose lives are entangled with the presence of international volunteering. Second, we argue for an affect‐informed approach to socio‐politically shaped vulnerability, with a particular emphasis on lived experiences and affective capacities related to enduring social and material conditions. Against the backdrop of marginalisation of adolescent mothers from rural and indigenous backgrounds, many of whom are survivors of sexual abuse, we analyse the experiences of these youths living at a specific residential care centre and interacting with volunteers on a daily basis. In doing so, we employ a series of perspectives from the residents, while taking into account the organisational environment. We also show the complex ways in which resident–volunteer encounters are at play in life‐enhancing affective states, capacities, and relations emerging among the residents. Our findings on the residents' self‐ and shared capacity of transformation highlights the importance of attending to the spatialities of affective life in academic work focused on the contemporary geographies of international volunteering. This paper critically engages with the implications of the "affect turn" in the geographies of development and volunteering. By way of considering "affective life" at a residential youth care centre in Peru through an ethnographic study, it also aims to contribute to current discussions of vulnerability and "(self‐)transformation" taking place through affectivity in the experience of volunteering. [ABSTRACT FROM AUTHOR]

Sustainable development is a fundamental objective for guaranteeing the future of the planet. Taking into account the impact of emerging economies on the global economy and the scarcity of papers that have considered the effect of CSR initiatives on consumer behavior on those economies, it seems that further research on this issue is necessary. In particular, we analyze the extent to which CSR affects the connection and links of the consumer to the brand (i.e., self–brand connection, brand engagement). The main contribution of the paper to the field is the analysis of the interaction between CSR and branding in the context of an emerging economy. To that aim, and also in a novel way, we use the Stimuli–Organism–Response (SOR) model for a sample of more than 400 food and beverage consumers in Metropolitan Lima, Peru. Our results show that CSR effectively acts as a stimulus for consumers to identify and link to brands and that, in addition, these links generate buy‐back (i.e., loyalty) and recommendation behaviors (i.e., WOM) which, in turn, create a great commercial value for companies. This research also analyses how incomes and educational levels moderate the intensity of such links. For practical implications, global trends in managing CSR and branding may be useful, although some cross‐cultural and context‐specific adaptations are necessary. [ABSTRACT FROM AUTHOR]

This paper explores the role of types and the intensity of transnational ties for migrants' well‐being from a global perspective. Based on a literature review, two competing hypotheses are formulated—transnational resources versus transnational stress—according to which transnational ties have either a positive or a negative effect on migrants' well‐being. Drawing on data from a large‐scale survey of Peruvian migrants worldwide, this paper examines the strength and direction of the relationship between Peruvian migrants' transnational ties and poor well‐being, the latter measured as depression/loneliness as a principal concern. While the multivariate regression results do not support the transnational resources hypothesis, partial support is found for the transnational stress hypothesis: more intense transnational ties are positively associated with poor well‐being. Our study points the importance of considering transnational ties in research on migrants' well‐being and indicates the relevance of developing adequate measurements and longitudinal research designs to explore the causal relationships between migrants' well‐being and transnational ties. [ABSTRACT FROM AUTHOR]

This paper presents Ag, Cu, and Pb isotopes for five silver and 10 copper artefacts found in the first intact pre‐Columbian tomb of the Wari culture female elite at Castillo de Huarmey, Peru. Ag and Cu isotope data indicate that the metals were extracted from primary, hypogene ore deposits. Most of the Pb isotope data for the Castillo de Huarmey artefacts correlate with the core Wari site of Conchopata, suggesting utilization of ores from similar deposits. The observed spread in Pb isotopes can be explained by the utilization of regional ores with highly variable Pb isotopes, such as the Julcani deposit. Alternatively, the linear nature of the Pb isotope results obtained for these samples may also be a result of the mixing of ores from different deposits or the re‐smelting of metals. Some of the Pb isotope results also indicate imports from other remote regions, providing evidence for long‐distance interactions on a vast regional scale, in the northern (North Coast of Peru) and southern (Southern Peru and Potosi region in Bolivia) spheres of influence of the Wari Empire and the Tiwanaku state. [ABSTRACT FROM AUTHOR]

This paper presents the first value‐added model of private school effects in Peru, using the unique Young Lives longitudinal data. Raw differences in test scores show that children in private schools have higher test scores in both maths and Peabody Picture Vocabulary Test for the most part. Estimates from ordinary least squares regression also indicate the existence of private school premium in maths. However, when we controlled for prior achievement, we find no private school effects in learning. These results hold true for both low‐ability and high‐ability children and are robust to sorting on unobserved ability, grouping on lag structures and transfer between private and public schools. © 2019 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

This paper provides evidence that exposure to illegal labor markets during childhood leads to the formation of industry‐specific human capital at an early age, putting children on a criminal life path. Using the timing of U.S. antidrug policies, I show that when the return to illegal activities increases in coca suitable areas in Peru, parents increase the use of child labor for coca farming, putting children on a criminal life path. Using administrative records, I show that affected children are about 30% more likely to be incarcerated for violent and drug‐related crimes as adults. No effect in criminality is found for individuals that grow up working in places where the coca produced goes primarily to the legal sector, suggesting that it is the accumulation of human capital specific to the illegal industry that fosters criminal careers. However, the rollout of a conditional cash transfer program that encourages schooling mitigates the effects of exposure to illegal industries, providing further evidence on the mechanisms. [ABSTRACT FROM AUTHOR]

Consumption of appliances in the residential sector in Peru has been growing continuously during the last 20 years. Although social benefits due to this growth are evident, there are also some related environmental impacts in the use and end‐of‐life (EoL) phases (e.g., inadequate handling or disposal at the EoL stage). Nevertheless, there is also a hidden potential in the growing stock of household appliances, such as their potential exploitation as resources of industrial materials found in urban areas. Thus, the aim of this research paper is to analyze the evolution of the adoption of electronics in Peruvian households and estimate the stock of electrical and electronic equipment and related materials in the residential sector from 2001 to 2019, and greenhouse gases (GHG) emissions due to its use. Material flow analysis is the main methodology used in this research and its application relies on different strategies and the integrated use of official sources. Moreover, a Peruvian input–output table and associated environmental matrices were used to calculate GHG emissions. Results indicate that, in 2019, an average household possessed between 86 and 121 kg of appliances, which means the total stock of household appliances in Peru was in the range of 805,000 to 1,134,000 metric tons, an increase in mass of 70–95% by 2019 compared to 2001. These results will be useful to estimate the urban stock of appliances in the residential sector to help policy‐makers design and implement an adequate e‐waste management system that comprehends the potential of secondary materials embedded in these products. [ABSTRACT FROM AUTHOR]

The Mexican hogfish (Osteichthyes: Labridae, Bodianus diplotaenia Gill, 1862) is widely distributed throughout the tropical eastern Pacific from the Gulf of California to northern Peru, including all oceanic islands. Artisanal fishers occasionally capture it today and its remains are recovered at pre‐Columbian dwelling sites along the Pacific Coast of America. This paper addresses the advantages of using allometry to estimate size ranges of Mexican hogfish in pre‐Hispanic archeological samples from two ancient settlements in the Pearl Island archipelago of Panama: (1) Playa Don Bernardo (PdB), a preceramic site (6.2–5.6 kya), and (2) Bayoneta Island (BY‐10), a ceramic site (~1 kya). For creating the allometric model, a modern collection composed of 39 individuals covering a wide range of sizes and weights was used. All individuals have complete information about their total length (TL) and standard length (SL), which were recorded in millimeters (mm), and their total fresh weight (W) in grams (g). The TL of the sample ranged between 265 and 750 mm, and the SL between 210 and 487 mm. The W ranged between 273 and 3450 g. The most frequent bones (11) and otoliths were selected and 29 measurements were taken. The total length–weight relationship was W = 2E−05 TL3.0857 with R2 = 0.984. In general, it was observed that the relationships between the TL and the bone measurements had a strong correlation (R2 > 0.95). At PdB, the mean reconstructed length was 289.6 mm (TL), and at BY‐10, it was 283.6 mm (TL). The study of the archeological samples of B. diplotaenia could be used as a point of reference in modern ecological studies and fisheries management particularly in the Pearl Island archipelago. [ABSTRACT FROM AUTHOR]

The present qualitative study examined how a group of Peruvian adolescents (N = 32) from different cultural contexts conceive their well-being. The goal was to identify the domains that structure their conception of well-being and how they evaluate it based on their elaboration. For this objective, 32 in-depth interviews were carried out with adolescents from different cultural contexts in Perú. Elements such as region, academic performance, and gender were considered to identify specificities during the analysis. Interviews were analyzed using a thematic analysis strategy. As a result, six domains of adolescent well-being emerged where well-being is associated with socioeconomic factors, family and peer relationships, future aspirations, social skills and self-esteem, academic performance, and health care. Participants' evaluations of well-being were mainly grounded in the socioeconomic, family, and educational domains. Findings highlight the need to further develop psychology research on adolescence in non-WEIRD societies., (© 2024 Society for Research on Adolescence.)

Identifying a future occupation is an important achievement during adolescence, a process particularly complex for Peruvian adolescents. Perú is a postcolonial country with many forms of inequality, and one of them is the opportunity gap to attend a college. However, most adolescents aspire to go to university as a way out of poverty, and, since Perú is a collectivist society, this is a family task: it is adolescents' responsibility to go to college in order to give a better life to their families. Theories developed for WEIRD societies (Western, Educated, Industrialized, Rich and Democratic) do not provide an accurate explanation of Peruvian adolescents' occupational projects because they envision a person with autonomy and resources to choose a career. Thus, our goal is to analyze adolescents' occupational plans considering the role adolescent-caregivers relationships play in this configuration. This study is part of the project "Being an adolescent in Perú" (PUCP-UNICEF) which characterized Peruvian adolescence by studying 14 variables through a qualitative study with 66 participants. In depth interviews were conducted and the data was analyzed using thematic analysis. Results of the thematic analysis are organized in three topics that explain the relationship between occupational plans and adolescent-caregiver relationship (1) adolescents have occupational aspirations rather than achievable projects that are that are built alone, without adult support; (2) attending college as an occupational aspiration belongs to the family, not to the individual operating also a kind of "debt" to pay to their caregivers for being financially supported to be able to study in high school; and (3) caregivers do not have the possibility or resources of being able to accompany their adolescent's occupational plans. We conclude that Peruvian adolescents think about their future within the framework of their family's needs, rather than linked to personal and occupational goals, impeding adolescents from exploring and selecting a realistic occupational goal consistent with their interests. The results allow us to discuss the relevance of studying adolescent development taking into account the particularities of the adolescents' cultural and socioeconomic contexts as well as the core role that relationship with caregivers plays in this process in Perú., (© 2024 Society for Research on Adolescence.)

Peru is the second most important destination country for Venezuelan emigration. The country's policy response can be separated into two distinct phases: the first one, under former president Pedro Pablo Kuczynski (July 2016–March 2018), is characterized by relative openness; the second one, under incumbent president Martín Vizcarra (in office since March 2018), is characterized by policy closure and a shift towards securitization. In this paper, we apply the concept of adaptive leadership to explain the stark difference in the migration‐related governance of both presidents. We find that the policy shift can be explained by an interplay between three factors: an internal political crisis due to conflict between the executive and legislative branches of government; the change in number and social profiles of Venezuelan migrants, with a tendency towards lower social, economic and educational statuses; and the rise in xenophobic attitudes among the Peruvian population. [ABSTRACT FROM AUTHOR]

The expansion of surfing as a multibillion‐dollar industry and sport has, on the one hand, increased awareness about threats posed to marine and coastal environments, but has also brought growing acknowledgement of the environmental, cultural and economic value that surfing provides. This has been accompanied by a growing movement of surfers and related stakeholders (e.g. communities and manufacturers that rely on the surf tourism and industry for income) that seek to protect surf breaks. This paper argues that certain emblematic surf breaks should be protected not only for their value to surfers, but also for the ecosystem services they provide and other benefits for marine conservation.Through a series of case studies from Peru, Chile and the USA, the paper discusses how, in areas where there is significant biodiversity or iconic seascapes, surf breaks can be integrated with marine conservation. Suggestions are given regarding the International Union for Conservation of Nature categories of protected areas that are most appropriate for such cases.The paper also explores how, in certain cases, several existing surf‐break protection mechanisms could qualify as other effective area‐based conservation measures, including Chile's proposed TURF–surf model, the international World Surfing Reserves, and Peru's Ley de Rompientes. In this way, certain surf‐break protection mechanisms could help contribute to countries' progress towards achieving the Convention on Biological Diversity's Aichi Target 11.Overall benefits of marine conservation groups and surfers joining forces are discussed, including how this can help reduce negative impacts of the sport on natural ecosystems. [ABSTRACT FROM AUTHOR]

This paper analyses the effect of a set of irrigation rehabilitation projects conducted over the last 10 years in Peru. The projects were conducted without the aim or the tools for a full-fledged impact evaluation. Nevertheless, this paper attempts an evaluation through the use of alternative data sources such as household surveys and geographic information, a strategy of identification of beneficiaries and control households based on spatial proximity to the projects' sites, and an econometric approach consisting of a double-differencing technique. The empirical analysis is guided and interpreted with the help of a theoretical model that considers the effects of an irrigation project on the distribution of production, employment and income for different types of landowners. The paper concludes that the irrigation projects implemented in Peru had a positive impact on intended beneficiary households, but not in the way it could have been simplistically expected. The project did benefit the poor but not by increasing production in their own small plots but by providing them with better employment opportunities in larger farms. [ABSTRACT FROM AUTHOR]

This paper assesses the importance of psychosocial status in the accumulation of cognitive skills during the transition from mid to late childhood. We use longitudinal data from a cohort of 700 Peruvian children drawn from a very rich dataset, the Young Lives Survey, to test the impact of children's perception of respect at the age of 8 on cognitive achievement 4 years later, controlling for cognitive skills at the age of 8, lagged child and household characteristics, and community fixed effects. This empirical specification is akin to estimating a conditional demand function for cognitive skills, which deals with some of the main pitfalls of skill endogeneity. We find that poorly respected children are linked to a lower rate of cognitive accumulation than their better‐respected counterparts. As expected, we also find that previously accumulated cognitive skills enable higher subsequent cognitive skill accumulation. We go one step further by testing and finding evidence of complementarities across skills. We show that cognitive differences amplify over time between children with low and high psychosocial skills. Overall, our results suggest that psychosocial status, an aspect little studied in the context of developing countries, plays an important role in the acquisition of cognitive skills during childhood. [ABSTRACT FROM AUTHOR]

The assessment of climate change impacts on water resources and flood risk is typically underpinned by hydrological models calibrated and selected based on observed streamflow records. Yet, changes in climate are rarely accounted for when selecting hydrological models, which compromises their ability to robustly represent future changes in catchment hydrology. In this paper, we test a simple framework for selecting an ensemble of calibrated hydrological model structures in catchments where contrasting climatic conditions have been observed. We start by considering 78 model structures produced with the FUSE modular modelling framework and rely on a Pareto scheme to select model structures maximizing model efficiency in both wet and dry periods. The application of this approach in three case study basins in Peru enables the identification of structures with good robustness, but also good performance according to hydrological signatures not used for model selection. We also highlight that some model structures that perform well according to traditional efficiency metrics have low performance in contrasting climates or suspicious internal states and fluxes. Importantly, the model selection approach followed here helps to reduce the spread in precipitation elasticities and temperature sensitivities, providing a clearer picture of future hydrological changes. Overall, this work demonstrates the potential of using contrasting climatic conditions in a multi‐objective framework to produce robust and credible simulations, and to constrain structural uncertainties in hydrological projections. [ABSTRACT FROM AUTHOR]

This paper analyses the location decisions and geographical expansion of microfinance institutions (MFIs) across Peru. To this end, econometric analyses are performed on a self-constructed dataset that covers MFI presence and expansion in the 1832 districts of Peru, and this for 39 MFIs and 13 commercial banks over the period 2001-2008. The paper shows that Peruvian MFIs have expanded considerably during the last decade. MFIs especially increase access in districts with higher levels of development and therefore seem to follow principally a commercial logic. Districts with banks have also a higher probability of an MFI opening. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Abstract: The purpose of this paper is to understand how the context in mining projects influences the corporate social responsibility (CSR) strategy to earn a social licence to operate (SLO). This paper also presents a comparative case study analysis of four mining operations in Peru. This analysis was qualitative in nature and is complemented with insights from supplementary key informant interviews and the emerging literature on SLO and CSR. The findings show that mining projects with a complex‐unstable context take considerable effort and a longer process to earn an SLO. In this situation, it is not recommended that companies use either a defensive strategy or compliance. Instead, the company must use strategic and managerial strategies to reduce social conflicts. Also, when the context is low or of moderate uncertainty, it is preferable to use strategic and managerial strategies in order to gain an SLO. Copyright © 2018 John Wiley & Sons, Ltd and ERP Environment [ABSTRACT FROM AUTHOR]

Developing countries located in the tropics have favorable climates to develop modern agriculture and agriculture‐based industry. Peru and Indonesia are examples of two developing countries located in the tropics with economies based on the export of agricultural products. The generation of agricultural and forest residues has continuously increased in these countries. In this paper, we analyze the availability of agricultural and forest products in Peru and Indonesia in order to calculate the number of residues that could potentially be used for different applications such as energy generation and composite materials production. A single index taking into account the technical, economic, and environmental performance of these residues‐based products was utilized to compare them. The results showed that, in addition to the generation of energy, the production of plastic bio‐based composites and activated carbon are viable alternatives for the use of these residues. [ABSTRACT FROM AUTHOR]

Has the past decade of sustained economic growth and political transformations reversed Latin America's historical failure to secure market and social incorporation? To address this question this article draws on the experiences of Bolivia, Brazil, Chile, Peru and Uruguay by distinguishing between short-term outcomes - which may depend on benign international conditions - and policy changes, which are more important for long-term performance. It highlights the overall success of both Brazil and Uruguay and shows that the other countries have made more progress in terms of social than market incorporation. [ABSTRACT FROM AUTHOR]

A framework based on Ulrich's critical systems heuristics (CSH) is presented to organize second-order critical inquiry in systems practice and action research. It is argued that such an approach not only improves the rigour of systems methodologies in action in a specific 'situation of interest' but also brings rigour to research aimed at improving systems practice. The paper draws on critical systems heuristics and illustrates its application in the context of an intervention using Checkland's soft systems methodology to discuss the environmental impact of mining operations in southern Peru. We sketch the context in which the systemic intervention was carried out, reporting on the initial soft systems methodology stages (relevant systems, root definitions and CATWOE analysis) produced in workshops with stakeholders. The paper illustrates how learning about improvement in systems practice can be guided with the use of second-order boundary critique. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

This article focuses on the utilization of Banisteriopsis caapi in drug addiction treatment. The primary research was carried out in Takiwasi Center for the Rehabilitation of Drug Addicts and Research on Traditional Medicines. A preparation from B. caapi, also known as purgahuasca, that is being used in the center was initially administered during initiation rituals by the Awajún (Aguaruna) people in northern Peru. This paper describes the purgahuasca ritual and its distribution among the Awajún people. Our findings reveal that between 68.2% and 86.5% of respondents recognize the importance of the purgahuasca ritual to their recovery. Appropriate conservation tools must be created to preserve the purgahuasca ritual for future generations, as it represents a useful therapeutic tool and an important part of the intangible cultural heritage of Peru. [ABSTRACT FROM AUTHOR]

Increasing participation in family decision making is an integral part of adolescent development. This paper uses longitudinal data from four low and middle income countries—Ethiopia, India, Peru and Vietnam—to assess the relationship between young people's involvement in schooling decision making and schooling outcomes. In the pooled sample, compared to young adults who indicate to have no say in educational choices at age 19, adolescents who make these decisions unilaterally or jointly with parents are on average 17%–23% more likely to drop out by age 22. The effects are, however, heterogenous across countries. [ABSTRACT FROM AUTHOR]

Artisanal and small‐scale gold mining (ASGM) is the primary global source of anthropogenic mercury (Hg) emissions and a large source of landscape change. ASGM occurs throughout the world, including in the Peruvian Amazon. This data set contains measurements of surface water, precipitation, throughfall, leaves, sediment, soil, and air samples from across the Madre de Dios region of Peru, in locations near and remote from ASGM. These data were collected to determine the fate and transport of Hg across the landscape. Samples were collected in 2018 and 2019. Data predominantly included total Hg and methyl Hg concentrations in surface water, precipitation, throughfall, leaves, sediment, soil, and air. Additional water and soil parameters were also measured to better characterize their chemistry. There are no copyright restrictions; please cite this data paper when the data are used in publication. [ABSTRACT FROM AUTHOR]

Although there are some examples of successful complementary feeding programmes to promote healthy growth and prevent stunting at the community level, to date there are few, if any, examples of successful programmes at scale. A lack of systematic process and impact evaluations on pilot projects to generate lessons learned has precluded scaling up of effective programmes. Programmes to effect positive change in nutrition rarely follow systematic planning, implementation, and evaluation (PIE) processes to enhance effectiveness over the long term. As a result a set of programme-oriented key principles to promote healthy growth remains elusive. The purpose of this paper is to fill this gap by proposing a set of principles to improve programmes and interventions to promote healthy growth and development. Identifying such principles for programme success has three requirements: rethinking traditional paradigms used to promote improved infant and young child feeding; ensuring better linkages to delivery platforms; and, improving programming. Following the PIE model for programmes and learning from experiences from four relatively large-scale programmes described in this paper, 10 key principles are identified in the areas of programme planning, programme implementation, programme evaluation, and dissemination, replication, and scaling up. Nonetheless, numerous operational research questions remain, some of which are highlighted in this paper. [ABSTRACT FROM AUTHOR]

Increasing rates of school enrolment have changed childhoods in the global South, so that it is now the norm for children to attend at least some years of primary school. This paper explores the extent to which valuing of children as educational projects and outcomes may be displacing previous valuations of children as contributors to the domestic economy. The paper draws on qualitative interview data from Young Lives, a longitudinal study of children growing up in four developing countries, using a case study approach to explore the experiences of four children in rural Andhra Pradesh, India. The paper suggests that children are balancing expectations for the future with responsibilities to their families in the present, and concludes that the over-valuing of formal qualifications and the under-valuing of forms of work such as agriculture risk being internalised by children, leaving those who do not succeed feeling they are 'a waste'. [ABSTRACT FROM AUTHOR]

We study the role of natural resource windfalls in explaining the technical efficiency of public expenditure. Using a rich dataset of expenditure and public good provision for 1836 municipalities in Peru for the period 2001–2010, we estimate a nonmonotonic relationship between the efficiency of public good provision and the level of natural resource transfers. Local governments that were extremely favored by the boom in mineral prices were more efficient in using fiscal windfalls, whereas those that only benefited from modest transfers were more inefficient. These results can be explained by the increase in political competition associated with the boom. However, the fact that increases in efficiency were related to reductions in public good provision casts doubts on the beneficial effects of political competition in promoting efficiency. [ABSTRACT FROM AUTHOR]

Sustainability has become a fundamental concern in today' world—one which firms can no longer remain oblivious to. Through CSR, companies can shore up financial sustainability by acting in responsible, socially and environmentally sustainable ways. Yet the vast majority of literature addressing this phenomenon to date has focused almost exclusively on developed economies. The objective of the present study, therefore, is to contribute to filling this gap by analyzing the potential impact of CSR on sustainable financial value in the context of an emerging economy, Peru. To this end, we used the PLS technique to carry out quantitative analysis of data from a sample of over 200 managers at Peruvian companies. Our model is based on the premises of Social Capital Theory and Theory of Resources. Specifically, we analyze the extent to which CSR impacts corporate reputation, brand image and financial value in the context of an emerging economy. Our data indicate that—unlike more developed economies—in emerging economy contexts, direct relationships linking CSR and company financial value are lacking, though may occur by way of the path CSR > reputation > brand image > financial value. We also find that size moderates this path, while the sector of activity does not moderate the causal model. Hence, we suggest that both the cross‐cultural component and differing degrees of economic development and market maturity affect the perceived impact of CSR on financial value. The present study is pioneering in that it analyzes the impact of sustainability on financial value from the perspective of managers in an emerging economy context. Key theoretical and practical implications of our findings are provided in the final section of the paper. [ABSTRACT FROM AUTHOR]

Recent large‐scale land transactions, often framed as 'land grabbing,' are historically unprecedented. Millions of hectares of land have changed hands for agriculture‐driven development over the past decade, and their implementation generates substantial risk of land degradation. This paper investigates land transaction patterns and evaluate their potential socio‐environmental impacts in Cambodia, Ethiopia, Liberia, and Peru. We undertake a novel spatially explicit approach to quantify land transactions and conduct scenario‐based analyses to explore their implementation consequences on people, land, and carbon emission. Our results demonstrate that existing global datasets on land transactions substantially underestimate their incidence but can either exaggerate or underreport transacted areas. Although confirming that land transactions are more likely to occur in sparsely populated, poorer, and more forested areas, our scenario‐based analyses reveal that if fully implemented for agricultural development, land transactions in the four countries will affect more than one million people, yield over 2 Gt of carbon emissions, and disrupt vast swathes of forests. Our findings refute the 'empty land' discourse in government policy and highlight the consequences of land degradation that can occur at an unexpected scale in the 'global land rush.' Future policymaking needs to anticipate the risk of land degradation in terms of deforestation and carbon emission while pursuing agriculture‐driven development through land transactions. [ABSTRACT FROM AUTHOR]

Obsidian was broadly used along the Andean Cordillera in South America. Particularly in Peru, its use can be traced to the earliest human occupations, continuously through pre‐Columbian times to contemporary Andean agro‐pastoralist societies. In order to distinguish the provenance of obsidians from Peru, this paper reports a new X‐ray fluorescence (XRF) analysis on several obsidians obtained in surface collections of the Ayacucho region. The analysis and source determination were made by XRF on 52 specimens. The source assignments involved comparisons between the compositional data for the specimens and the University of Missouri Research Reactor (MURR) XRF obsidian database for sources in Peru. After analysing the samples, obsidian sources were recognized and documented. All had small nodules not larger than about 4 cm. They were recovered from Ñahuinpuquio and Marcahuilca hill which belonged to the previously identified Puzolana source. Another identified source was the well‐known Quispisisa, located 120 km south of the city of Ayacucho, and distributed through a vast region in central Peru. The results expand previous observations made on the obsidian provenance at Ayacucho Basin, as well as the extension of the Puzolana source between Yanama and Huarpa hills, south of Ayacucho city. [ABSTRACT FROM AUTHOR]

In the Nazca‐South American subduction zone, the subducted slab is flattened beneath northern Andes, called the Peruvian flat slab. The 2019 Mw 8.0 northern Peru intermediate‐depth normal‐faulting earthquake occurred at the leading edge of the Peruvian flat slab, where the slab rebends and sinks into greater depths. Here we investigate this earthquake by back projection analysis and finite fault inversion using seismic waveforms at teleseismic distances. The rupture process indicates that this earthquake ruptured mainly along strike (353°) ~150 km north‐northwestward within ~55 s (average rupture velocity ~2.7 km/s), resulting in two major slip areas with three high slip rate areas, which are consistent with three high‐frequency energy radiation subevents. Our study suggests that such a heterogeneous rupture may be caused by slab bending forces and dehydration embrittlement associated with morphology of the slab. Plain Language Summary: In the subduction zone, the oceanic plate and the continental plate converge, and then the oceanic plate subducts beneath the continental plate and sinks into great depths. In South America, the subducted oceanic plate is flattened beneath northern Peru instead of steeply sinking, called the Peruvian flat slab. After flattened, the oceanic plate starts to sink again. In the region where the oceanic plate starts to sink again, an earthquake with magnitude of 8.0 occurred at a depth of ~120 km on 26 May 2019. How and why this earthquake occurred at such a depth? Does the occurrence of this earthquake is related to the subducted oceanic plate? We try to answer these questions in this paper. By using two techniques, we obtained a scenario about this earthquake: In the region where the oceanic plate starts to sink again, the water in the oceanic plate releases, along with the effect of sinking to cause this earthquake. After this earthquake initiated, it ruptured mainly unilaterally north‐northwestward ~150 km with a speed of ~2.7 km/s, resulting in two large slip areas with three high slip rate areas. Such an uneven rupture may be produced by the heterogeneous structure of the slab. Key Points: Rupture process of the 26 May 2019 northern Peru earthquake is obtained from back projection analysis and finite fault inversionThe effects of slab bending forces and dehydration embrittlement together may cause this earthquake at an intermediate depthThis intermediate‐depth earthquake is probably associated with morphology of the Peruvian flat slab [ABSTRACT FROM AUTHOR]