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Examines agricultural productivity growth in the Andean Region. Rate of total factor productivity growth; Importance of land quality, war and violence and political freedoms in understanding behavioral differences across countries.

Copyright of Revista Iberoamericana de Estudios de Desarrollo is the property of Revista Iberoamericana de Estudios de Desarrollo 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 new Latin American economic, political and social conditions as well as the greater weight of migration ininternational context make for the fact that it has become essential for governments to politically and sociallyaddress the issues, as current migration dynamics is increasingly visible. It is necessary that public policies and national, bilateral and multilateral measures are based on the integration between the countries of the region and adjusted to the new Latin American realities. This paper explores migration policies of the Andean Community atthe start of the new millennium. The paper addresses the main agreements and legal instruments thateach of the Andean countries has developed. [ABSTRACT FROM AUTHOR]

This paper analyses the political paths of congresswomen in Bolivia, Colombia, Ecuador, Peru and Chile between 2009 and 2016. Their trajectories are classified according to their previous experience and the territorial levels at which they won elections before entering congress, and includes both novices and professionals. The professionals had prior political experience at either national or subnational level, with some having won re-election. Despite the countries' differing institutional structures, the vast majority held their first political position at national level - in congress (novices). Among the professionals, most of them in Chile, Ecuador and Peru began their careers at national level, while in Colombia and Bolivia they began at subnational level. [ABSTRACT FROM AUTHOR]

Copyright of Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 examines the threats to Indigenous water rights and territories in the Andean countries. It analyzes how water and water rights are embedded in Indigenous territories, and how powerful actors and intervention projects tend to undermine local societies and indigenous livelihoods by developing large-scale water infrastructure. Three cases illustrate the encroachment process. In Colombia, the Embera Katio people's water territory is colonized by a large-scale hydropower development project. In Ecuador, large-scale drinking water development for megacities aims the water belonging to the Oyacachi community's indigenous highland territory. In Peru, communal water rights of the Colca Valley indigenous peasantry are under threat because of large-scale irrigation development. As the cases show, Indigenous peoples and communities actively contest the undermining and subordination of their water and territorial rights through a myriad of multi-scalar livelihood defense strategies. The challenges that indigenous peoples face to defend their water-based livelihoods are, however, enormous and growing every day. [ABSTRACT FROM AUTHOR]

Intergovernmental coordination is a key factor to achieve a homogeneous implementation in national policies. However, the bibliography of coordination argues that the horizontal coordination (among jurisdictions of the same level of government) does not occur. On the contrary, this paper asks: Which factors produces that the subnational jurisdictions decide to act together to enforce a national environmental policy? Based on comparative analysis of the formulation process of the adequation laws to the National Forest Law in Argentina, I argue that the provinces act together when there are a regularized and legitim institutional frame available and a structures of incentives that produce that the locals politicians decide formulate and enforce an environmental policy in theirs jurisdictions. [ABSTRACT FROM AUTHOR]

Copyright of Comechingonia: Revista de Arqueología is the property of Comechingonia 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 proposes some ideas regarding the history of the Quyllurit'i pilgrimage by paying close attention to the particularities of the wayri ch'unchu ritual dance. After reviewing the available historic evidence about it, the text proposes that the location of the shrine at the bottom of the Qulqipunku glacier (Ocongate, Cusco) is explained by its liminal position between the Andean highlands and the Amazon. The location of the Qulqipunku, and its difference with the Ausangate, is very evident for the communities living in the surroundings of Qulqipunku. The text proposes that these communities were the main protagonists of the pilgrimage at least until the end of the 19th century. The paper explains why the wayri ch'unchu dancers of these communities -highlanders who represent indigenous peoples of the Amazon- were so important and numerous in the past. Finally, the text shows how the continuous grow of the pilgrimage along the 20th century has meant a progressive marginalization of these communities within the pilgrimage as well as a clear decrease in the preponderance of wayri ch'unchu dancers. The decrease is directly related to attempts to subvert ideologies of social differentiation present in the region that are framed in a broader and ongoing process of de-indianization. [ABSTRACT FROM AUTHOR]

Copyright of Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 reviews the experience of South America with subregional financial cooperation. It shows that this experience has been one of the most successful in the developing world, though uneven in terms of country coverage and services provided. The Andean region has been particularly successful in developing multilateral financial institutions, and development financing has been broader in scope than monetary cooperation. The two most successful institutions, the Andean Development Corporation (CAF) and the Latin American Reserve Fund (FLAR), have shown the capacity to provide services to member countries in a timely way, with countercyclical effects and on a large scale relative to other forms of multilateral financing. The strong sense of ownership of these organizations by member states, preferred creditor status, and professional management is reflected in very healthy portfolios, even in the face of default by member countries. The services of these institutions could be broadened to support, among others, the development and integration of the physical infrastructure and macroeconomic policy coordination. [ABSTRACT FROM AUTHOR]

Copyright of Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 Antípoda is the property of Universidad de los Andes 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 Revista Espanola de Antropologia Americana is the property of Universidad Complutense de Madrid 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 Desafíos is the property of Colegio Mayor de Nuestra Senora del Rosario 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.)

Crustal blocks in the Central Andes have experienced vertical-axis rotations through angles ranging up to 50° or more. Blocks located north of the abrupt change in tectonic and geographical trends at Arica, northern Chile (the Arica deflection) have been rotated counter-clockwise; blocks south of the deflection rotated clockwise. Rocks ranging in age from Late Miocene to mid-Jurassic are involved. The palaeomagnetic record of this rotation is referred to as the central Andean rotation pattern (CARP). In this paper the CARP is investigated using the techniques of palaeomagnetic shape analysis. From this analysis it appears that rotation began in the early Cenozoic, and probably continues at the present time. Cenozoic rotation appears to have occurred without significant northward or southward displacement. For earlier times, however, evidence of displacement is found; the sense of displacement apparently changed at Arica—northward north of the deflection and southward further south. This Mesozoic displacement of crustal material away from Arica appears to have taken place without accompanying rotation. No existing tectonic model for the CARP explains this two-part history. Several alternative models are suggested, perhaps the least unconvincing of which involve creation of the Arica deflection during the late Mesozoic by subduction of a spreading ridge, or perhaps an island arc or other crustal-thickness anomaly riding on the Nazca (or Phoenix) Plate. [ABSTRACT FROM AUTHOR]

The multiple meanings of Indigenous territory and property are explored here by means of a multidisciplinary lens. An ethnological journey through different geographies and times is undertaken to explain some property formation processes and illuminate how they unfold in the Andean region and, particularly, in Peru. Based on four core notions of anthropology--time, space, culture and power--Indigenous territory and property are described showing how land commodification has imposed detrimental effects on indigenous peoples. [ABSTRACT FROM AUTHOR]

The author comments on the importance of having a decision-making administrative unit and an effective operative unit in every level of executive authority in institutional systems. The paper has focused on the system in Tupicocha district in the Andean region. It was stated that the jurisdictional orbit of the governor is the entire district which is composed of the mother community and its anexos.

This article presents the author's views on the anthropological research paper "The Politics of Anthropology in the Andes," by Orin Starn, an American anthropologist. The author appreciates Starn's paper saying that it is wide-ranging and stimulating in various ways. The author holds that Starn's description of anthropologists working in the Andean region as the good outsiders is right.

Agroforestry land-use systems in the Andean region have great socioeconomical and biophysical relevance due to the abundance of products and services they provide. Biomass estimation in these systems constitutes a priority concern as it facilitates assessment of carbon sink potential and functionality for biomass production. In this paper, a set of equations were fitted to enable easy and reliable estimation of the total aboveground biomass of four frequently used species in Andean agroforestry systems: Acacia melanoxylon L., Alnus acuminata Kunth., Buddleja coriacea Remy. and Polylepis racemosa Ruiz&Pav. The best models for each biomass component (stem, thick branches, thin branches and leaves) per species were fitted simultaneously according to SUR methodology ( seemingly unrelated regressions ). All models showed high goodness of fit statistics and more than 70% of the observed variation in biomass components was explained by the independent variables. The inclusion of height as a predictive variable in the models improved their predictive reliability and expanded the application range. The models developed here are useful for assessing the sustainability of agroforestry systems and could support governmental or non-governmental forest conservation incentive programs and initiatives. [ABSTRACT FROM AUTHOR]

This article presents the author's views on the anthropological research paper "The Politics of Anthropology in the Andes," by Orin Starn, an American anthropologist. The author appreciates Starn's paper saying that his avoidance of the rationalist triumphalism that imagines a congruence between knowledge and progress enables him to occupy a distinct place. According to the author, Starn makes a call for a relevant and politically engaged anthropology.

This article presents the author's views on the anthropological research paper "The Politics of Anthropology in the Andes," by Orin Starn, an American anthropologist. The author appreciates Starn's paper saying that Starn's sensitivity to issues of power and knowledge is impressive with far-reaching implications. According to the author, the paper explores basic epistemological questions that divide the social sciences and humanities.

The Younger Dryas stadial, a cold event spanning 12,800 to 11,500 years ago, during the last deglaciation, is thought to coincide with the last major glacial re-advance in the tropical Andes. This interpretation relies mainly on cosmic-ray exposure dating of glacial deposits. Recent studies, however, have established new production rates for cosmogenic 10Be and 3He, which make it necessary to update all chronologies in this region and revise our understanding of cryospheric responses to climate variability. Here we present a new 10Be moraine chronology in Colombia showing that glaciers in the northern tropical Andes expanded to a larger extent during the Antarctic cold reversal (14,500 to 12,900 years ago) than during the Younger Dryas. On the basis of a homogenized chronology of all 10Be and 3He moraine ages across the tropical Andes, we show that this behaviour was common to the northern and southern tropical Andes. Transient simulations with a coupled global climate model suggest that the common glacier behaviour was the result of Atlantic meridional overturning circulation variability superimposed on a deglacial increase in the atmospheric carbon dioxide concentration. During the Antarctic cold reversal, glaciers advanced primarily in response to cold sea surface temperatures over much of the Southern Hemisphere. During the Younger Dryas, however, northern tropical Andes glaciers retreated owing to abrupt regional warming in response to reduced precipitation and land-surface feedbacks triggered by a weakened Atlantic meridional overturning circulation. Conversely, glacier retreat during the Younger Dryas in the southern tropical Andes occurred as a result of progressive warming, probably influenced by an increase in atmospheric carbon dioxide. Considered with evidence from mid-latitude Andean glaciers, our results argue for a common glacier response to cold conditions in the Antarctic cold reversal exceeding that of the Younger Dryas. [ABSTRACT FROM AUTHOR]

This paper analyzes the distribution of vascular plants species endemic to the southern central Andes (south-western Bolivia and north-western Argentina). All 540 species endemic to the study regions (approx. 720600 km²) have been included in the analysis. The main part of the endemic species is found in semiarid habitats between 1500-3500 m asl pointing to the topographically complex plateau, slope, and valley system of the southern central Andes as the main locations for its endemic flora. The distribution of the endemic species within arid sites is in contrast with that of vascular plant diversity in general, as the most diverse habitat of the region is the moist subtropical Tucumano-Bolivian Yungas forest of the eastern Andes slope. A total of 17 well defined and partly overlapping distribution patterns were indentified. The broadest distribution pattern defines a general area of endemism for the southern central Andes. This area extends through nearly the entire region and is defined by species that are widespread within the region in desert to sub-humid environments of the high Andes, slopes, or valleys. Nearly all other areas of endemism are nested within this broad distribution pattern as successively north-south overlapping areas along the slopes and valleys of the Andes and the Pampeanas Range. Despite the distributional bias of endemism towards the arid sites almost half of the endemic species are restricted to a few high endemic areas that lie in juxtaposition to the main rainfall zones. These areas contain the widest habitat ranges in terms of altitude and rainfall within the region with the endemic species being equally variable in altitude and moisture requirements. Previous defined phytogeographic units were not recognized among the distribution patterns. However, the northern part of the Prepuna can be defined as two partly overlapping distribution patterns. [ABSTRACT FROM AUTHOR]

The Andean mountain range has played an important role in the evolution of South American biota. However, there is little understanding of the patterns of species diversity across latitudinal and altitudinal gradients. In this paper, we examine the diversity of small mammals along the South Central Dry Andes (SCDA) within the framework of two contrasting hypotheses: (a) species richness decreases with increasing elevation and latitude; and (b) species richness peaks at altitudinal midpoints (mid-domain). We explore the composition of the species pool, the impact of species-area relationships and the Rapoport effect (i.e. size of geographic ranges) along latitudinal and elevational gradients. First, we constructed a database of SCDA small mammals. Then, species richness patterns were analysed through generalized models, and species-area relationships were assessed by log-log regressions; the curvilinear method (c = S/Az) was use to compute richness corrected by area size. Lastly, the Rapoport effect was evaluated using the midpoint method. Our results show: (1) a richness of 67 small mammals along the SCDA, of which 36 are endemic; (2) a hump-shaped pattern in species richness along elevation and latitudinal gradients; (3) a species-area relationship for both gradients; (4) endemic species corrected by area present a strong and positive relationship with elevation; (5) a Rapoport effect for the latitudinal ranges, but no effect across the elevational gradient; and (6) a major species turnover between 28° and 30° south latitude. This is the first study quantifying the diversity of small mammals encompassing the central Andean region. Overall, our macrogeographic analysis supports the previously postulated role of the Andes in the diversification of small mammals (i.e. in situ cladogenesis) and highlights some basic attributes (i.e. anatomy of geographic ranges; species-area relationships) when considering the consequences of climate change on biodiversity conservation of mountain ecosystems. [ABSTRACT FROM AUTHOR]

As more consumers, firms, and governments become aware of environmental degradation and take measures to abate their negative contribution, green practices will play a more prominent role in corporate management. This paper conducts a literature review of firm greening modes, the proposed benefits of firm greening, implementation approaches, and green marketing in order to propose a framework for analyzing firm greening in the international arena, paying particular attention to behavior within developing countries. A survey administered to general managers of three hundred and seventeen small and medium sized Colombian, Ecuadorian, and Venezuelan firms determines the managerial perceptions of greening activities in Andean firms. Though Andean managers are environmentally aware, they do not conduct adequate levels of measurement, auditing, and reporting. Also, the concept of stakeholders and peer corporations may limit Andean firms responsiveness. [ABSTRACT FROM AUTHOR]

(Paternalism and clientelism as effects of conjunction between paternalist oppression and capitalist exploration). This paper arises from two questions: why do paternalism and clientelism phenomena in modern Latin America populism remain so insensible to the Marxist critic of capitalistic exploitation? Why, are they, at the same time, ostile to any kind of regional or indigenous power (in the case of Amazonia and Andean countries)? My hypothesis is that such mechanisms could also popular identification processes that may correspond to progressive forces, as well as to some forms of alienation of the logic of economic and social reciprocity. On the one hand, they can express the resistance of a reciprocal economy and community to the expansion of the capitalistic exchange domain. But, on the other hand, they could represent the alienation of the logic of reciprocity, through its asymmetric forms of redistribution (or centralized reciprocity): paternalism and clientelism. I see, in the limits of socio-political critiques and in the renewal of populism in Latin America, a superposition and cohabitation between the alienation specific of reciprocity systems - the paternalist oppression - and the alienation arising from the exchange system: the capitalistic exploitation. [ABSTRACT FROM AUTHOR]

Religious pilgrimages to the high Andes take place periodically in the Humahuaca region of northern Argentina. Although these processions are formally dedicated to the Virgin and saints of Catholicism, they take place in a mountain landscape that has been traditionally sacred in Andean religiosity. This paper describes the high altitude pilgrimage to Punta Corral from an ethnographic and ethnoarchaeological perspective, focusing in the use of the mountain scenery in the context of the diverse rituals that configure this particular collective religious experience. The Punta Corral pilgrimage is a syncrethic ceremony which combines elements of popular catholicism in Latinoamerica with traditional Andean rituals of probable pre-hispanic origin. [ABSTRACT FROM AUTHOR]

Copyright of Comechingonia: Revista de Arqueología is the property of Comechingonia 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.)

Literary Indigenism and the narrative production of Peruvian writer José María Arguedas have long been associated with one another as discursive practices which share the same narrative commitment. This paper attempts to establish the discursive horizon of literary Indigenism, in examining the moods of enunciation and the discursive relations of Arguedas' work. Also, it discusses the supposed indigenist identity of that work, considering specifically the history of representations of the figure of indigenous people and the Andean world. [ABSTRACT FROM AUTHOR]

One of the principal purposes of Q'eros music is to actively regenerate and re-create good relationships with the cosmos and the spirit world they believe in. In this paper, I explore how both the Q'eros' indigenous songs as well as their newly-adopted music and dance for Peru's largest pilgrimage, Qoyllurit'i, achieve efficacy of purpose through similar techniques of sound production and aesthetics. Even though the specific musical traits (structure, scale, and instrumentation) of both musical styles are significantly different, I address how Q'eros' musical production of both types share the same focus and serve the same end-goals, whether the ritual is an intimate one within the community or shared with thousands of other people from the greater region. In addition, the performance of both styles of music serve as specific identity markers for the Q'eros depending on their contextual use and the identity desired at the time. In other words, the Q'eros' musical choices allow them to shift identities between traditional Q'eros in their home community and misti (mestizo) in Qoyllurit'i. [ABSTRACT FROM AUTHOR]

This paper seeks to understand from a regional perspective the causes of the civil war of 1876-1877 in the Northeastern Colombian Andes. An approximation is made to the urban hierarchy in the current Colombian departments of Santander and Norte de Santander between 1853 and 1875. The conditions leading to conflict and the change in that hierarchy are presented. In addition, intervening players and the location of the events of the war are identified. It concludes that the group that fell in urban hierarchy was the one that started the war and that this hierarchical change was one of the causes of the war. [ABSTRACT FROM AUTHOR]

Investigations at several northern Peruvian coastal archaeological sites by archaeologists and physical anthropologists are beginning to provide details on long-term patterning of mortuary behavior. Some of these patterns include retainer sacrifice, child sacrifice, and the metaphorical principle we refer to as "like with like." In this paper, we discuss the data relating to these mortuary patterns discovered at the site of Santa Rita B in the middle Chao Valley. Examples of each of the patterns presented are evident at the site. These include at least three child sacrifices and one adult sacrifice. The sacrifices appear to he retainer sacrifices, defined as sacrifices intended to accompany a deceased principal personage in the afterlife. Time inclusion of the child sacrifices with a subadult principal burial is part of the "like with like" pattern seen here and at other Andean sites. Dating to the start of the Late Intermediate period (ca. A.D. 1100-1300), these finds are compared to other north coastal sites, both earlier and later, and the extent of temporal continuity in these patterns is discussed. [ABSTRACT FROM AUTHOR]

Copyright of Fermentum: Revista Venezolana de Sociologia y Antropologia is the property of Universidad de Los Andes 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.)

According to many analysts, the Nation-State is undergoing a deep crisis, because the effectiveness of its power is being broken up in three directions: upward, as a consequence of globalization and supranationalization; horizontally due to the dismantling of the Welfare State, privatization and deregulation; and downward, because of decentralization and the empowerment of the regional and local entities. According to these interpretations, the joint action of such trends would be eroding the traditional competences of the Nation State and determining the irrelevance of this political entity in the global dynamics of power and the economy. This paper analyses the impact of the above mentioned trends in the Andean countries. It concludes by stating that in this context the processes aimed at reducing the role of the State, have paradoxically turned into the widening of its sphere of action in other fields. [ABSTRACT FROM AUTHOR]

Background: Hot spring bacteria have unique biological adaptations to survive the extreme conditions of these environments; these bacteria produce thermostable enzymes that can be used in biotechnological and industrial applications. However, sequencing these bacteria is complex, since it is not possible to culture them. As an alternative, genome shotgun sequencing of whole microbial communities can be used. The problem is that the classification of sequences within a metagenomic dataset is very challenging particularly when they include unknown microorganisms since they lack genomic reference. We failed to recover a bacterium genome from a hot spring metagenome using the available software tools, so we develop a new tool that allowed us to recover most of this genome. Results: We present a proteobacteria draft genome reconstructed from a Colombian's Andes hot spring metagenome. The genome seems to be from a new lineage within the family Rhodanobacteraceae of the class Gammaproteobacteria, closely related to the genus Dokdonella. We were able to generate this genome thanks to CLAME. CLAME, from Spanish "CLAsificador MEtagenomico", is a tool to group reads in bins. We show that most reads from each bin belong to a single chromosome. CLAME is very effective recovering most of the reads belonging to the predominant species within a metagenome. Conclusions: We developed a tool that can be used to extract genomes (or parts of them) from a complex metagenome. [ABSTRACT FROM AUTHOR]

The precipitation is a meteorological variable studied in Argentina mainly in annual, seasonal and monthly scales. Its variability is a significant climate element and also a critical socioeconomic factor. This study aims to contribute to the knowledge of daily rainfall in Argentina. Daily records of precipitation for 66 stations provided by the Servicio Meteorológico Nacional are used (period 1991-2014). The spatial distribution of the annual precipitation presents an east-west gradient in the north of the country. In monthly scale, there are different precipitation distributions such as a double maximum in the centre-east zone or a single maximum in the northwest in summer time and in the southern Andes range during the winter. To carry out the study, the concentration index (CI) of daily precipitation with a resolution of 1 mm is used. Precipitation in Argentina, given its vast territory, presents a great variability with a wide range of rainfall regimes; CI values are found between 0.54 and 0.68. These values are categorized as high (greater than 0.61) and low (less than 0.58). The north of the country and the Atlantic coast show the highest CI values. The lower values are present in the Andes range and in the south of the country. The results are compared with other studies in the world. [ABSTRACT FROM AUTHOR]

Copyright of Indiana (03418642) is the property of Ibero-Amerikanisches Institut, Preussischer Kulturbesitz 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 patchy distribution of high-Andean treeline forests has provoked discussion about the relative importance of anthropogenic and climatic causes of this pattern, both of which vary with topography. We aimed to understand the topographic controls on the distribution of Polylepis subsericans treeline forests in the Andes of southern Peru, and the changes in these controls along an elevational gradient. We mapped Polylepis forests in the Cordillera Urubamba, Cusco, using high-resolution aerial images and related forest cover to topographic variables extracted from a digital terrain model (30-m resolution). The variables were selected based on their expected biological relevance for tree growth at high elevations. We constructed logistic regression models of forest cover, separately for each of five 100-m elevational belts. To deal with spatial autocorrelation, models were based on randomized 10% subsampling of the data with 1000 repetitions. The results suggest a consistent shift in topographic preference with elevation, with forests at lower elevations showing a preference for topographically protected sites near rivers and forests at higher elevations being increasingly restricted to north-facing and well-drained sites. Our study offers the first indication of the ability of Andean treeline forests to benefit from the topographic heterogeneity of the high-Andes. Providing that dispersal and establishment are possible, local relocation between microsites could help these forests to persist regionally in spite of changing climatic conditions. [ABSTRACT FROM AUTHOR]

Forest site classification adapted to the respective site conditions is one prerequisite for sustainable silviculture. This work aims to initiate the forest site classification for pine plantations in the southern Andean region of Ecuador. Forest productivity, estimated by the dominant height of 20-year-old trees (DH20), was related to data from climate, topography, and soil using 23 plots installed in pine plantations in the province of Loja. Forest site productivity was classified as: low (class C: 13.4 m), middle (class B: 16.6 m), and high (Class A: 22.3 m). Strong determinants to differentiate the forest site classes were: the short to medium term available Ca and K stocks (organic layer + mineral soil standardized to a depth of 60 cm), soil acidity, the C:N ratio, clay and sand content, forest floor thickness, altitude, and slope. The lowest forest productivity (Class C) is mainly associated with the lowest short to medium term available K and Ca stocks. Whereas, in site classes with the highest forest productivity, pines could benefit from a more active microbial community releasing N and P, since the soil pH was about 1 unit less acidic. This is supported by the lowest forest floor thickness and the narrowest C:N ratio. [ABSTRACT FROM AUTHOR]

The Andean mountains of South America are the most species-rich biodiversity hotspot worldwide with c. 15% of the world's plant species, in only 1% of the world's land surface. Orchids are a key element of the Andean flora, and one of the most prominent components of the Neotropical epiphyte diversity, yet very little is known about their origin and diversification., We address this knowledge gap by inferring the biogeographical history and diversification dynamics of the two largest Neotropical orchid groups (Cymbidieae and Pleurothallidinae), using two unparalleled, densely sampled orchid phylogenies (including more than 400 newly generated DNA sequences), comparative phylogenetic methods, geological and biological datasets., We find that the majority of Andean orchid lineages only originated in the last 20-15 million yr. Andean lineages are derived from lowland Amazonian ancestors, with additional contributions from Central America and the Antilles. Species diversification is correlated with Andean orogeny, and multiple migrations and recolonizations across the Andes indicate that mountains do not constrain orchid dispersal over long timescales., Our study sheds new light on the timing and geography of a major Neotropical diversification, and suggests that mountain uplift promotes species diversification across all elevational zones. [ABSTRACT FROM AUTHOR]

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Microrefugia are important for supporting populations during periods of unfavourable climate change and in facilitating rapid migration as conditions ameliorate. With ongoing anthropogenic climate change, microrefugia could have an important conservation value; however, a simple tool has not been developed and tested to predict which settings are microrefugial., We provide a tool based on terrain ruggedness modelling of individual catchments to predict Andean microrefugia. We tested the predictions using nine Holocene Polylepis pollen records. We used the mid-Holocene dry event, a period of peak aridity for the last 100 000 yr, as an analogue climate scenario for the near future., The results suggest that sites with high terrain rugosity have the greatest chance of sustaining mesic conditions under drier-than-modern climates. Fire is a feature of all catchments; however, an increase in fire is only recorded in settings with low rugosity., Owing to rising temperatures and greater precipitation variability, Andean ecosystems are threatened by increasing moisture stress. Our results suggest that high terrain rugosity helps to create more resilient catchments by trapping moisture through orographic rainfall and providing firebreaks that shelter forest from fire. On this basis, conservation policy should target protection and management of catchments with high terrain rugosity. [ABSTRACT FROM AUTHOR]

In contrast to Andean natives, high-altitude Tibetans present with a lower hemoglobin concentration that correlates with reproductive success and exercise capacity. Decades of physiological and genomic research have assumed that the lower hemoglobin concentration in Himalayan natives results from a blunted erythropoietic response to hypoxia (i.e., no increase in total hemoglobin mass). In contrast, herein we test the hypothesis that the lower hemoglobin concentration is the result of greater plasma volume, rather than an absence of increased hemoglobin production. We assessed hemoglobin mass, plasma volume and blood volume in lowlanders at sea level, lowlanders acclimatized to high altitude, Himalayan Sherpa, and Andean Quechua, and explored the functional relevance of volumetric hematological measures to exercise capacity. Hemoglobin mass was highest in Andeans, but also was elevated in Sherpa compared with lowlanders. Sherpa demonstrated a larger plasma volume than Andeans, resulting in a comparable total blood volume at a lower hemoglobin concentration. Hemoglobin mass was positively related to exercise capacity in lowlanders at sea level and in Sherpa at high altitude, but not in Andean natives. Collectively, our findings demonstrate a unique adaptation in Sherpa that reorientates attention away from hemoglobin concentration and toward a paradigm where hemoglobin mass and plasma volume may represent phenotypes with adaptive significance at high altitude. [ABSTRACT FROM AUTHOR]

In this report, the first installment of a comprehensive revision of the didelphid marsupial genus Marmosops, we revise the species of the subgenus Sciophanes. Based on morphological character variation among almost 300 examined specimens-which we interpret in the context of a previously published analysis of molecular sequence data-this revision recognizes 12 valid species in three monophyletic species groups: the Parvidens Group (including M. pakaraimae, M. parvidens, and M. pinheiroi), the Fuscatus Group ( M. carri, M. fuscatus, M. handleyi, and M. invictus), and the Bishopi Group ( M. bishopi, M. juninensis, M. ojastii, and two new species). For each species we summarize information about type material, ecogeographic distribution, and diagnostic morphological characters. Despite our diligent search for relevant material in North and South American museums, the absence of any specimens of Sciophanes from vast Amazonian and Andean landscapes with seemingly suitable habitat suggests that significant range extensions and/or new species will result from future inventory fieldwork. [ABSTRACT FROM AUTHOR]