1,188 results
Search Results
2. Authorship and date of a key South American paper by Phillip P. King (1832)
- Author
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Coan, Eugene V., Petit, Richard E., and Zelaya, Diego Gabriel
- Subjects
Ciencias Biológicas ,purl.org/becyt/ford/1 [https] ,Malacological literature ,Patagonia ,Zoología, Ornitología, Entomología, Etología ,purl.org/becyt/ford/1.6 [https] ,CIENCIAS NATURALES Y EXACTAS - Abstract
An important paper describing many species of new marine and terrestrial mollusks from southern South America was published in the early 1830s. Its authorship has been attributed either to King and Broderip or to King alone, and its date has been given variously as 1830, 1831, or 1832. We here contend that King alone should be considered its author and that it should be dated as July 1832. Fil: Coan, Eugene V.. Santa Barbara Museum of Natural History; Estados Unidos Fil: Petit, Richard E.. North Myrtle Beach; Estados Unidos Fil: Zelaya, Diego Gabriel. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
- Published
- 2011
3. The effect of perceived CSR effort on consumer brand preference in the clothing and footwear sector
- Author
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Achabou, Mohamed Akli
- Published
- 2020
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4. Enlarging the knowledge on Graomys griseoflavus (Rodentia: Sigmodontinae) in Patagonia: distribution and environments.
- Author
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Udrizar Sauthier, Daniel Edgardo, Formoso, Anahí Elizabeth, Teta, Pablo, and Pardiñas, Ulyses Francisco José
- Subjects
ANDALGALOMYS ,MURIDAE ,ZOOGEOGRAPHY ,ANIMAL introduction - Abstract
The article discusses a study on the geographic distribution of Leaf-eared mouse Graomys griseoflavus in Patagonia. The study used such factors as literature records, small mammal trappings carried out during the past ten years and the study of owl pellets to review this distribution. It also compiled a list of recorded localities of G. griseoflavus in Patagonia to depict their distribution.
- Published
- 2011
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5. “Don’t buy this jacket” : Consumer reaction toward anti-consumption apparel advertisement
- Author
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Hwang, Chanmi, Lee, Youngji, Diddi, Sonali, and Karpova, Elena
- Published
- 2016
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6. More-than-human 'rhuthmanalysis' in Mónica Giron's art installation Ajuar para un conquistador.
- Author
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Lopes Coelho, Salomé
- Subjects
- *
INSTALLATION art , *CONQUERORS , *TRADITIONAL knowledge , *SPACE environment , *CONTENT analysis - Abstract
This paper explores the relationships between humans and more-than-humans through the analysis of the rhythmic elements of the contemporary art installation Ajuar para un conquistador. An interdisciplinary approach bridges Art Studies and More-Than-Human Geographies to examine Ajuar and its environmental concerns, including the relationships between human and non-human worlds. Through 'rhuthmanalysis' – a new concept and word developed in the paper – textual and image analysis, and conversations with the artist, this study examines the social, cultural, and ecological meshwork of rhythms articulated within and by the art installation. 'Rhuthmanalysis' expands upon Henri Lefebvre and Catherine Régulier's rhythmanalytic project by incorporating Indigenous knowledge and an ecocritical standpoint while redefining the understanding of rhythm. The analysis explores how Ajuar, concerned with the endangerment of Patagonian birds, promotes a performative understanding of the artwork's capacities in the context of the interplay between the affective dimensions and politics of the creation of the Argentine nation-state. The paper argues that Ajuar participates in the social and political production of space and place, opening new forms of being together and challenging colonial narratives through a rhythmic lens. Moreover, this study seeks to offer a singular perspective on how approaching art as a rhythmic configuration of an intricate choreography of coexistence can provide unique insights into space and the environment. The paper concludes that 'rhuthmanalysis' is a privileged tool to address the need for a transdisciplinary methodology capable of giving account of the mutual unfolding of human and non-human existences and decolonising posthumanist geographies and rhythm studies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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7. The Work Of Grace And The Problem Of The Social In A Dam Conflict In Chilean Patagonia.
- Author
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McAllister, Carlota
- Subjects
ENVIRONMENTAL justice ,SOCIAL conflict ,SOCIAL problems ,PROCEDURAL justice ,ENVIRONMENTAL impact analysis ,CONFLICT theory ,RESEARCH personnel - Abstract
This paper deploys an anthropological concept of "theopolitics" to reflect on the political work done and undone by the action of grace during a dam conflict in the Aysén region of Chilean Patagonia. Exploring procedural affinities between the state's instruments for regulating environmental conflict and theories of assemblage that trace relations to overcome Western ontologies, I suggest that their convergent demand for relations to be rendered visible as the condition of environmental justice violated the ethic of gratuity through which Ayseninos participate in collective life on the Patagonian frontier. Instead of arguing for a better capture of grace within accounts of sociality, I suggest that researchers accompanying anti-extractive struggles should attend to how untraceable but nonetheless highly effective forces like grace convene coalitions for environmental justice and thus to the theopolitical conditions of staging challenges to the state and capital in Latin America. Resumen: Este trabajo antropológico conceptualiza la "teopolítica" para investigar la acción de la gracia en un conflicto de represas en la región patagónica de Aysén, Chile. Yuxtaposicionando los procedimientos del estado chileno para regular los conflictos ambientales con teorías de ensamblaje que rastrean relaciones para representar ontologías alternativas a la occidental, sugiero que su convergencia en condicionar la justicia ambiental en la visibilización de las relaciones viola la ética de gratuidad con la cual participan los ayseninos en la vida colectiva de la frontera patagónica. En lugar de abogar por una mejor captura de la gracia, propongo que los investigadores que acompañan las luchas antiextractivas latinoamericanas presten más atención la participación de fuerzas no rastreables pero no obstante muy eficaces, como la gracia, en convocar movimientos para la justicia ambiental y, así mismo, a las condiciones teopolíticas de los desafíos al estado y al capital en Latinoamerica. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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8. Antimicrobial resistance occurrence in the South American Sea Lion (Otaria flavescens) from Patagonia, Argentina, from a One Health perspective
- Author
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Lorenti, E., Faccone, D., Origlia, J., Maydup, F., Nievas, H., Corso, A., Daneri, G., Harrington, A., Lucero, S., Varela, E., and Giacoboni, G.
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- 2024
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9. Circulation of Goods and Information in Southern Patagonia During the Late Holocene: An Integrated Analysis of Engravings and Black Obsidian Artefacts
- Author
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Re, Anahí, Cassiodoro, Gisela, Flores Coni, Josefina, and Guichón, Francisco
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- 2024
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10. The multiple environmentalities of conservation mapping in Patagonia-Aysén.
- Author
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Astaburuaga, Juan, Leszczynski, Agnieszka, Martin, Michael E, and Gaillard, JC
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ECOTOURISM ,ENVIRONMENTAL management ,NATURE conservation ,PROTECTED areas ,PRIVATE sector - Abstract
In this paper, we mobilise a multiple environmentalities framework that captures overlapping rationalities of governing nature to engage and identify the role of maps and mapping practices in Patagonia-Aysén, Chile, a peripheral region where government and institutional actors have embraced (eco)tourism as a conservation strategy in protected areas. Through interviews with key stakeholders situated in conservation and tourism institutions in both the public and private sector, we identify two dominant environmentalities at play in the relationship between protected area management and tourism development in Patagonia-Aysén: a neoliberal environmentality, which seeks to promote conservation through the commodification of nature as a tourism product, and an environmentality of truth predicated on a singular, pristine and beautiful nature as an object of conservation and advantage for tourism. Through an analysis of conservation maps and mapping rationalities specific to the Cerro Castillo protected area in Patagonia-Aysén, we trace how these multiple environmentalities are consolidated, rendered real and actionable through geovisualisations and cartographic practices. We argue that conservation maps and mapping emerge as an 'encounter point' wherein multiple environmentality strategies and rationalities converge, producing a form of governing the spaces of conservation – what we term a spatial environmentality – rooted in neoliberal and aesthetic logics. Spatial environmentality, we contend, constitutes a form of governing conservation spaces by inscribing and assigning (in)appropiate uses to nature that operationalises institutional interests in conditioning the active engagement of 'environment subjects' to control, administer, and take care of the spaces of conservation while in turn making environmental stewardship profitable. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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11. Demersal and pelagic species of fish and squid from the Patagonian shelf
- Author
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Mirtha Noemi Lewis, Maria Rosa Marin, and Elena Beatriz Eder
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demersal habitat ,Range (biology) ,Otras Ciencias Biológicas ,elasmobranches ,teleosts ,cephalopods ,occurrence ,Demersal zone ,purl.org/becyt/ford/1 [https] ,Commercial fishing ,Ciencias Biológicas ,Occurrence ,Southwestern Atlantic Ocean ,biology.animal ,lcsh:Zoology ,Patagonia ,lcsh:QL1-991 ,purl.org/becyt/ford/1.6 [https] ,Ecology, Evolution, Behavior and Systematics ,pelagic habitat ,Morphometrics ,Squid ,geography.geographical_feature_category ,biology ,Continental shelf ,Pelagic zone ,Fishery ,Geography ,Benthic zone ,Animal Science and Zoology ,CIENCIAS NATURALES Y EXACTAS ,Data Paper - Abstract
The dataset contains 2007 records of occurrence of 39 species of fish and 2 species of squid distributed on the Patagonian continental shelf and slope. This dataset describes a new and revised version of the original data published through OBIS with individual morphometrics. Specimens are representative of pelagic, demersal, demersal-pelagic, demersal-benthic and benthic habits and they were collected by commercial fishing vessels in autumn (May–June, 2001, 51 catches), winter (July–August, 2001, 38 catches) and summer (January-February, 2002, 112 catches). The sampling was carried out with bottom trawls at a depth range of 73–370 m. The survey was located between 39°–52°S and 55°–65°W. Fil: Eder, Elena Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Marin, Maria Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
- Published
- 2017
12. The identity of Fuegian and Patagonian "dogs" among indigenous peoples in southernmost South America.
- Author
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Jaksic, Fabian M. and Castro, Sergio A.
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INDIGENOUS peoples of South America ,DOGS ,HISTORICAL source material ,WOLVES - Abstract
Background: By using a historical approach we attempt to answer the question of whether the "dogs" of Fuegian and Patagonian peoples are a domesticated dog (Canis lupus familiaris) or a tamed or domesticated Culpeo "fox" (Lycalopex culpaeus), or a cross breed. Methods and results: We reviewed historical chronicles and current scientific papers, and clarified several rather confusing concepts, providing disambiguation for terms such as Magellanic region, Patagonia, and Tierra del Fuego; Fuegian and Patagonian peoples; and Fuegian and Patagonian dogs. We conclude that these dogs belong to two different canid varieties: The smaller domestic dog typical of the "canoe-indians" (Chonos, Kawesqar, and Yahgan peoples) and the larger tamed or domesticated Culpeo "fox" typical of the "foot indians" (Aonikenk, Manek'enk, and Selk'nam peoples, thus proposing the use of Fuegian and Patagonian dog, respectively. Discussion: We think that the original Fuegian dog was indeed a Canis lupus familiaris brought along by the natives after the Bering's crossing and that the Patagonian dog was a tame Culpeo fox Lycalopex culpaeus, which was progressively replaced by the more gregarious, human friendly, and colorful domestic dogs brought by European explorers, adventurers, colonizers, and settlers of Patagonia and Tierra del Fuego during the mid to late 1800s. The possibility that the Patagonian dog was a cross between domestic dog and Culpeo "fox" cannot be ruled out, but the only specimen genetically analyzed was closest to being the latter and not a hybrid. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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13. Hearths, firewood availability, and intensity of occupations in the Central Plateau of Santa Cruz (Southern Patagonia, Argentina)
- Author
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Frank, Ariel D.
- Abstract
In this paper, I analyze the characteristics of the hearths found at the archaeological sites from the Central Plateau of Santa Cruz, Patagonia, Argentina. I look for similarities and differences between combustion structures found at Pleistocene/Holocene transition and middle Holocene sites, since these two periods show many differences in other aspects of human behavior. I also review palynological, ethnohistoric, and ethnographic information to learn about potential firewood availability in the past. Results suggest the existence of two different scenarios. During the Pleistocene/Holocene transition, firewood availability was low. This scarcity could be one of the reasons why occupations in the Central Plateau were of low intensity. Brief occupations involved the construction of simple flat hearths, which were located well inside the rock shelters. Since many of the sites were reoccupied several times, numerous hearths are recorded located very near one to each other. During the Middle Holocene, the diversity and abundance of firewood is relatively higher, and the intensity of occupations increased. More intense and functionally different occupations involved a higher diversity of combustion structures. Finally, the internal distribution of hearths in rock shelters shows a more dispersed pattern. However, taphonomic analyses should be performed in the future to verify the plausibility of these scenarios. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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14. New results of obsidian artifact analysis from the middle and lower basin of the Salado stream, Río Negro province, Argentina.
- Author
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Alberti, Jimena, Cardillo, Marcelo, and Stern, Charles
- Subjects
- *
ARCHAEOLOGY methodology , *OBSIDIAN , *ANALYTICAL geochemistry , *RAW materials , *PROVINCES - Abstract
The Salado and Verde streams constitute the two main seasonally available freshwater courses that flow into the Atlantic coast of the Río Negro province (continental Patagonia, Argentina, 42° South). This would have favored their use in the past as corridors for human circulation between the coast and the interior. This paper presents the results of the technomorphological and geochemical analyses of the obsidian artifacts recovered in the area to constrain mobility. The results allow us to propose the existence of toolkit reconditioning or replacement activities, and the identification of different sources of provenance of the obsidians (Sacanana, Telsen, and Portada Covunco, distant up to 800 km from the study area), reinforcing the hypothesis of a coast–inland circulation, with the possible existence of circuits of exchange of this raw material. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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15. Songs and Identity in Welsh Patagonia.
- Author
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James, E. Wyn
- Subjects
SONGS ,LANGUAGE ability ,EMIGRATION & immigration - Abstract
Over the centuries there have been a number of attempts, for economic, political and religious reasons, to create Welsh settlements overseas. The most successful of these, in terms of longevity at least, and perhaps the best known of all Welsh emigration ventures, was the establishment in 1865 of a Welsh Settlement in Patagonia, in what is now the Province of Chubut in Argentina, where perhaps as many as 5,000 of the inhabitants still speak Welsh fluently or have some ability with the language. The preservation of Welsh identity was central to the Patagonian project, which aimed to create a new Welsh-speaking, self-governing Wales overseas, founded on Christian and democratic principles. From the outset, songs played an important role in fostering the ideals that inspired the founders of the Settlement, ideals that would come progressively under threat as the Argentine government increasingly asserted its authority over the Settlement, promoting Argentinian identity and replacing Welsh with Spanish as the medium of education. This paper gives an overview of the development of the Welsh Settlement in Chubut down to the present day, focussing especially on the role of song in nurturing the dream of the Settlement's founders. [ABSTRACT FROM AUTHOR]
- Published
- 2023
16. Paleoenvironmental Changes for the Last 3000 Cal Years BP in the Pueyrredón Lake Basin, Southern Patagonia, Argentina.
- Author
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Marcos, Maria A., Bamonte, Florencia P., Echeverria, Marcos E., Sottile, Gonzalo D., and Mancini, Maria V.
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WATERSHEDS ,WESTERLIES ,VEGETATION dynamics ,TUNDRAS ,PLANT communities ,PALEOECOLOGY - Abstract
Patagonian shrub and ecotonal communities were sensitive to past environmental changes and thus may also be affected by future ones. Therefore, their paleoecological study constitutes a valuable tool to understand the way in which these plant communities respond to the forcings responsible for environmental variability. The aim of this paper is to reconstruct the vegetation dynamics of the Pueyrredón Lake area (47°25′55′′ S; 72°0.7′7′′ W) for the last 3000 cal yr BP and to contextualize these changes in a regional paleoclimatic framework. The results indicate that at the beginning of the 2900 cal yr BP, the vegetation in the northwest of Santa Cruz, Argentinian Patagonia, was represented by a grass-shrub steppe associated with forest–shrub steppe ecotonal elements. This information correlates with the larger-scale environmental inferences described for the period, which indicate an increase in moisture availability due to the weakening of the westerly winds. A marked change to arid conditions is indicated in the last 1050 cal yr BP, with the establishment and development of different shrub steppe communities and the lack of ecotonal elements. Although vegetation was sensitive to changes in moisture conditions related to the variability of the westerly winds, there is evidence of differences in the composition of shrub vegetation regarding the sequences analyzed. Variations in pollen proportions of the shrub steppes in the Pueyrredón Lake area suggest that changes in vegetation are not only due to climate variability but also local factors in the areas where shrub communities grow. The integration of the information with other Patagonian sequences allowed to frame these changes in a regional context. The results obtained provide useful information to understand the way vegetation changed in the past and the manner in which it may respond to future changes. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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17. Appendicular osteology of Skorpiovenator bustingorryi (Theropoda, Abelisauridae) with comments on phylogenetic features of abelisaurids.
- Author
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Cerroni, Mauricio A., Baiano, Mattia A., Canale, Juan I., Agnolín, Federico L., Otero, Alejandro, and Novas, Fernando E.
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SAURISCHIA ,PELVIC bones ,ANATOMY ,SKULL - Abstract
Skorpiovenator bustingorryi is a derived abelisaurid theropod represented by a fairly complete skeleton from the Late Cretaceous sedimentary beds of north-western Patagonia. Although some features were described in the original paper, mainly related to the skull, the appendicular anatomy remains undescribed. The aim of the present contribution is to provide a detailed description and analysis of the available appendicular bones, including comparisons with other ceratosaurian theropods close to Skorpiovenator. In this way, new autapomorphies emerged to further distinguish Skorpiovenator from its relatives. Furthermore, a comprehensive phylogenetic analysis was performed and several characteristics of the hind limb, in particular some of the autopodium, resulted in the identification of new apomorphic traits for Ceratosauria and Abelisauridae. These features might prove to be useful for future phylogenetic analyses and may help to resolve the still confusing and debated internal relationships of abelisaurid theropods. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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18. Osteochondritis dissecans and physical activity in skeletal remains of ancient hunter‐gatherers from Southern Patagonia.
- Author
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Zúñiga Thayer, Rodrigo, Suby, Jorge, Luna, Leandro, and Flensborg, Gustavo
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HUNTER-gatherer societies ,PHYSICAL activity ,ANTHROPOMETRY ,OSTEOCHONDRITIS ,JOINTS (Anatomy) ,ARTICULAR cartilage - Abstract
Osteochondritis dissecans (OCD) is a joint disease characterized by the detachment or separation of an articular cartilage fragment and subchondral bone in joint epiphyses. It has been diagnosed in archaeological skeletons worldwide but scarcely studied in hunter‐gatherer skeletal remains. The aim of this paper is to analyse the variation of OCD in skeletons of past populations that lived in Southern Patagonia during the Late Holocene, which can be useful to improve our understanding about the effects of the mechanical demands in hunter‐gatherers. The overall prevalence observed in this sample (40.5%), higher than the data reported for current populations and mostly located in the shoulder of young and middle adult males of terrestrial and maritime hunter‐gatherers, suggests that physical activity involved in both economic strategies would have played an important role in the development of OCD. The contact with European colonizers does not seem to have produced differences in the prevalence of OCD, although more dated skeletons are needed to test this hypothesis. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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19. A Tenebrionid beetle’s dataset (Coleoptera, Tenebrionidae) from Peninsula Valdés (Chubut, Argentina)
- Author
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Renato Mazzanti, Darío Hector Podestá, German Horacio Cheli, Lidia Miyashiro, Nicolás Rafael Martínez Román, and Gustavo E. Flores
- Subjects
STENOSINI ,TENEBRIONIDAE ,DATASET ,purl.org/becyt/ford/1 [https] ,TENEBRIONINAE ,LEPTYNODERES STRANGULATA ,Rhypasma quadricollis ,Peninsula ,lcsh:Zoology ,Emmallodera hirtipes ,Patagonia ,Leptynoderes tuberculata ,lcsh:QL1-991 ,Tenebrioninae ,OPATRINI ,geography.geographical_feature_category ,SCOTOBIINI ,biology ,Ecology ,EPITRAGINI ,Tenebrionidae ,Opatrini ,Zoología, Ornitología, Entomología, Etología ,BLAPSTINUS PUNCTULATUS ,PATAGONIA ,EPITRAGUS SPP ,MITRAGENIUS ARANEIFORMIS ,Scotobiini ,CIENCIAS NATURALES Y EXACTAS ,Epitragini ,NYCTELIA NODOSA ,PENINSULA VALDÉS ,Ecnomoderes bruchi ,Emmallodera hirtipes ,Article ,Ciencias Biológicas ,Epitragus spp ,LEPTYNODERES TUBERCULATA ,Belopini ,LAGRIINAE ,EPIPEDONOTA CRISTALLISATA ,HYLITHUS TENTYROIDES ,Edrotini ,Pimeliinae ,Epipedonota cristallisata ,Leptynoderes strangulata ,purl.org/becyt/ford/1.6 [https] ,Ecology, Evolution, Behavior and Systematics ,Mitragenius araneiformis ,geography ,EDROTINI ,ECNOMODERES BRUCHI ,Stenosini ,DATA PAPER ,Peninsula Valdés ,TENEBRIONID ,biology.organism_classification ,Hylithus tentyroides ,Archaeology ,EMMALLODERA HIRTIPES ,RHYPASMA QUADRICOLLIS ,Lagriinae ,PIMELIINAE ,NYCTELIINI ,BELOPINI ,Animal Science and Zoology ,Blapstinus punctulatus ,Nyctelia nodosa ,Nycteliini ,Hy - Abstract
The Natural Protected Area Peninsula Valdés, located in Northeastern Patagonia, is one of the largest conservation units of arid lands in Argentina. Although this area has been in the UNESCO World Heritage List since 1999, it has been continually exposed to sheep grazing and cattle farming for more than a century which have had a negative impact on the local environment. Our aim is to describe the first dataset of tenebrionid beetle species living in Peninsula Valdés and their relationship to sheep grazing. The dataset contains 118 records on 11 species and 198 adult individuals collected. Beetles were collected using pitfall traps in the two major environmental units of Peninsula Valdés, taking into account grazing intensities over a three year time frame from 2005-2007. The Data quality was enhanced following the best practices suggested in the literature during the digitalization and geo-referencing processes. Moreover, identification of specimens and current accurate spelling of scientific names were reviewed. Finally, post-validation processes using DarwinTest software were applied. Specimens have been deposited at Entomological Collection of the Centro Nacional Patagónico (CENPAT-CONICET). The dataset is part of the database of this collection and has been published on the internet through GBIF Integrated Publishing Toolkit (IPT) (http://data.gbif.org/datasets/resource/14669/). Furthermore, it is the first dataset for tenebrionid beetles of arid Patagonia available in GBIF database, and it is the first one based on a previously designed and standardized sampling to assess the interaction between these beetles and grazing in the area. The main purposes of this dataset are to ensure accessibility to data associated with Tenebrionidae specimens from Peninsula Valdés (Chubut, Argentina), also to contribute to GBIF with primary data about Patagonian tenebrionids and finally, to promote the Entomological Collection of Centro Nacional Patagónico (CENPAT-CONICET) and its associated biodiversity data. For these reasons, we believe that this information will certainly be useful for future faunistic, ecological, conservational and biogeographical studies. Fil: Cheli, German Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Fil: Flores, Gustavo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas. Laboratorio de Entomología; Argentina; Fil: Martínez Román, Nicolás Rafael. Universidad Nacional de la Patagonia; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Fil: Podestá, Darío Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Fil: Mazzanti, Renato. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Fil: Miyashiro, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
- Published
- 2013
20. Multigrid/Multiresolution Interpolation: Reducing Oversmoothing and Other Sampling Effects.
- Author
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Rodriguez-Perez, Daniel and Sanchez-Carnero, Noela
- Subjects
RADIAL basis functions ,BATHYMETRY ,DATA analysis ,ACCURACY ,MULTIGRID methods (Numerical analysis) - Abstract
Traditional interpolation methods, such as IDW, kriging, radial basis functions, and regularized splines, are commonly used to generate digital elevation models (DEM). All of these methods have strong statistical and analytical foundations (such as the assumption of randomly distributed data points from a gaussian correlated stochastic surface); however, when data are acquired non-homogeneously (e.g., along transects) all of them show over/under-smoothing of the interpolated surface depending on local point density. As a result, actual information is lost in high point density areas (caused by over-smoothing) or artifacts appear around uneven density areas ("pimple" or "transect" effects). In this paper, we introduce a simple but robust multigrid/multiresolution interpolation (MMI) method which adapts to the spatial resolution available, being an exact interpolator where data exist and a smoothing generalizer where data are missing, but always fulfilling the statistical requirement that surface height mathematical expectation at the proper working resolution equals the mean height of the data at that same scale. The MMI is efficient enough to use K-fold cross-validation to estimate local errors. We also introduce a fractal extrapolation that simulates the elevation in data-depleted areas (rendering a visually realistic surface and also realistic error estimations). In this work, MMI is applied to reconstruct a real DEM, thus testing its accuracy and local error estimation capabilities under different sampling strategies (random points and transects). It is also applied to compute the bathymetry of Gulf of San Jorge (Argentina) from multisource data of different origins and sampling qualities. The results show visually realistic surfaces with estimated local validation errors that are within the bounds of direct DEM comparison, in the case of the simulation, and within the 10 % of the bathymetric surface typical deviation in the real calculation. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
21. Flagging the nations: Citizens' active engagements with everyday nationalism in Patagonia, Chile.
- Author
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Benwell, Matthew C., Núñez, Andrés, and Amigo, Catalina
- Subjects
NATIONALISM ,BORDERLANDS ,COUNTRIES ,CITIZENS - Abstract
Geographical scholarship examining banal and everyday nationalism has tended to frame national flags as abstract and passive objects that are taken for granted and incorporated into the daily lives of citizens in mindless ways. In contrast, this paper acknowledges flags as lively material objects that can be enrolled by citizens to make political points and generate certain "affective atmospheres." It argues that the recognition of agency in debates concerning everyday nationalism needs to be pushed further to acknowledge the conscious and active negotiations of national objects like flags, to account for the diverse ways nations can be practised and performed by citizens. To illustrate our arguments we focus on the memories and reflections of citizens involved in protests in the Aysén region of Chilean Patagonia in 2012. During these incidents, citizens deployed different flags in provocative ways to draw attention to their reclamations and apply pressure on the Chilean state to improve socio‐economic conditions in the region. The legacies of events like the 2012 protests and the associated (re)appropriation of national flags enables an interrogation of citizens' everyday identifications with nations in this border region of Patagonia. More broadly, we use the example to call for the materialities of flags as active objects to be the subject of further geographical inquiry, as one way to reinvigorate explorations of political agency and everyday nationalism. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
22. The impact of protected areas on poverty: evidence from Chile.
- Author
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Vilela, Thais, Harb, Alfonso Malky, and Vergara, Carla Mendizábal
- Subjects
PROTECTED areas ,POVERTY areas ,STANDARD deviations ,PANEL analysis - Abstract
In this paper, we estimate the causal relationship between protected areas and poverty in Chile from 1982 to 2002. Chile is part of the coalition of countries committed to protecting 30% of the planet by 2030; a decision that implies increasing the number of protected areas in the country. As a result of this decision, grows the national debate about the potential impacts of protected areas on the economy and society. By estimating the causal effect of protected areas on poverty, we aim to contribute to this debate in Chile. We use panel data and a quasi-experimental approach to estimate the causal effect. We find that establishing a protected area covering at least 17% of a unit's terrestrial area causes a reduction of 0.216 standard deviations in the poverty index. This result is not sensitive to arbitrary implementation choices. Additionally, we show that the effect is driven by the Patagonia region, the part of Chile with the largest amount of new protected areas during the time frame of this study. Besides showing the benefits of protected areas to society, we hope the findings presented here might also be used to attract new investments and financial support to protected areas currently underfunded in Chile. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
23. A Product Line Analysis for Eco-Designed Fashion Products: Evidence from an Outdoor Sportswear Brand.
- Author
-
Luo Wang and Bin Shen
- Abstract
With the increasing awareness of sustainability, eco-design has been an important trend in the fashion industry. Many fashion brands such as Nike, Adidas, and The North Face have developed sustainable fashion by incorporating eco-design elements. Eco-design is an important part of sustainable supply chains. In this paper, we conducted a product line analysis of eco-designed products from a famous outdoor sportswear brand, Patagonia. We collected Patagonia's 2017 Spring Season product line data and analyzed the data through descriptive analysis, factor analysis and correlation analysis. We found that Patagonia mainly uses organic, recycled, and traceable materials in their eco-product line development. We identified that the usage of eco-materials may significantly affect the number of color choices and product weight as well as gender difference, pattern design, product fit and online reviewers' opinions at Patagonia. We argued that Patagonia should focus on functionality more than aesthetics in eco-design. We discussed how sustainable fashion firms should manage eco-design in the supply chain. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
24. The Paleozoic Central Patagonian Igneous Metamorphic Belt: its geodynamic and tectonic interpretation based on paleogeographic reconstructions
- Author
-
Vizán, Haroldo
- Published
- 2023
- Full Text
- View/download PDF
25. CYTOTYPE VARIATION AND CLONAL DIVERSITY IN POLYPLOID APOMICTIC POPULATIONS OF PILOSELLA (COMPOSITEAE, CICHORIEAE) INTRODUCED TO SOUTHERN PATAGONIA.
- Author
-
Krahulcová, Anna and Krahulec, František
- Subjects
CULTIVATED plants ,PLANT hybridization ,PLOIDY ,PHENOTYPES ,APOMIXIS ,PLANT fertility ,FLOW cytometry - Abstract
Copyright of Boletín de la Sociedad Argentina de Botánica is the property of Sociedad Argentina de Botanica 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.)
- Published
- 2021
- Full Text
- View/download PDF
26. Modeling Mechanisms of Cultural Diversity and Ethnicity in Hunter-Gatherers.
- Author
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Castillo, F., Barceló, J., Mameli, L., Miguel, F., and Vila, X.
- Subjects
CULTURAL pluralism ,ETHNICITY ,DEMOGRAPHIC characteristics ,HUNTER-gatherer societies ,TRADITIONAL societies ,MATERIAL culture ,ETHNOARCHAEOLOGY - Abstract
This paper aims to analyze the emergence of ethnicity and cultural differentiation in hunter-gatherer groups, using computer simulation methods. The existence of differences and similarities between populations has long been a major topic of investigation for archaeologists, who have traditionally used material culture as a means to identify different human groups. Today, this approach is perceived as being too simplistic. However, in the absence of satisfactory models, it often continues to be assumed as valid. In this paper, we present a preliminary model and its computer implementation to predict how hunter-gatherer societies interacted and built cultural identities as a consequence of the way they interacted. Our starting point for such analysis assumes the definition of ethnicity as the production and reproduction of group identity among members of a community, resulting from restricted cooperation flows. Results are compared with ongoing ethnoarchaeological research of Patagonian hunter-gatherers. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
27. Micro-Raman spectroscopy and complementary techniques applied for the analysis of rock art paintings at the archaeological locality La Angostura, lower valley of Chubut River (Patagonia, Argentina)
- Author
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Gurin, Celeste, Mazzuca, Marcia, Otero, Julieta Gómez, and Maier, Marta S.
- Abstract
In this paper, we characterized for the first time the painting materials in rock art panels of the Patagonian archaeological locality La Angostura using a methodological approach that combined micro-Raman spectroscopy, attenuated total reflection Fourier Transform infrared spectroscopy, and X-ray fluorescence spectroscopy. In this way, we obtained detailed information on the red, green, and black pigments as well as on accessory minerals present in the paints. Hematite was the chromophore in the red paintings while celadonite and glauconite were identified in the green motifs. A manganese oxide, presumably pyrolusite, was characterized as the black pigment. The pigment compositions were also compared to those of natural sediments collected along the valley of the Chubut River, but the components of the red and green sediment samples differed from those present in the rock art paints. In the red motifs of two of the rock art panels, a relevant finding was the presence of gypsum and anhydrite as a priming layer of the corrugated rock support onto which the red paints were applied. This revealed a different painting technique in comparison to that at the other analyzed panels of La Angostura where paints were applied as thin layers on a smooth surface of the rock support. As far as we know, this is the first report on the identification of gypsum and anhydrite as components of a preparation layer in Patagonian rock art. This result contributes to the open discussion on the origin and function of calcium sulfate in rock art. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
28. Risks of Neglecting Phenology When Assessing Climatic Controls of Primary Production
- Author
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Bandieri, Lucas M., Fernández, Roberto J., and Bisigato, Alejandro J.
- Published
- 2020
- Full Text
- View/download PDF
29. Human occupations at Cabeza de León 1 site, Santa Cruz, Argentina: an approach from the lithic technology.
- Author
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Cañete Mastrángelo, Daniela Soledad
- Subjects
ARCHAEOLOGICAL assemblages ,EXTRATERRESTRIAL resources ,ARCHAEOLOGICAL excavations ,NATIONAL parks & reserves ,RAW materials ,HUMAN beings - Abstract
The Patagonian coast has been occupied at least since the Middle Holocene but the way in which humans have interacted with spaces and resources in different areas of the coast has varied. As such, it is important to study the specifics of each occupation. In this paper, the activities that would have taken place at Cabeza de León 1 archaeological site, Monte León National Park, Santa Cruz province, Argentina, are addressed from the study of the recovered lithic assemblages. Results show the use of local raw material, the development of all manufacture stages in situ and the implementation of mainly expedient strategies. It can also be inferred that activities were mostly related to the capture and processing of resources. La costa patagónica ha sido ocupada desde mínimamente el Holoceno medio, pero el modo en que los humanos interactuaron con el espacio y los recursos a lo largo del tiempo en los distintos sectores fue diferente, lo que hace necesario estudiar las particularidades de cada ocupación. Aquí se abordan las actividades tecnológicas que se habrían desarrollado en el sitio Cabeza de León 1, sito en el Parque Nacional Monte León (Santa Cruz, Argentina), a partir del estudio de los materiales líticos allí recuperados. Estos muestran el empleo mayoritario de materias primas locales, la realización de todas las etapas de manufactura in situ, la implementación de estrategias tecnológicas principalmente expeditivas, y también permiten inferir actividades mayoritariamente vinculadas a la captura y procesamiento de recursos. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
30. Wild guanacos as scapegoat for continued overgrazing by livestock across southern Patagonia.
- Author
-
Marino, Andrea, Rodríguez, Victoria, Schroeder, Natalia M., and Maron, Martine
- Subjects
OVERGRAZING ,RANGE management ,SCAPEGOAT ,RANGELANDS ,POPULATION viability analysis - Abstract
Copyright of Journal of Applied Ecology 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.)
- Published
- 2020
- Full Text
- View/download PDF
31. Osteology of the unenlagiid theropod Neuquenraptor argentinus from the Late Cretaceous of Patagonia.
- Author
-
EGLI, FEDERICO BRISSÓN, ROLANDO, ALEXIS M. ARANCIAGA, AGNOLÍN, FEDERICO L., and NOVAS, FERNANDO E.
- Subjects
DINOSAUR anatomy ,BONES ,SAURISCHIA ,BIOSTRATIGRAPHY ,SKELETON - Abstract
Neuquenraptor argentinus was described as the first undoubted deinonychosaurian theropod from Gondwana. The only known specimen is represented by a fragmentary skeleton, including a nearly complete foot, coming from Late Cretaceous beds of Neuquén Province, Patagonia, Argentina. Neuquenraptor was later considered as belonging to the Southern Hemisphere paravian clade Unenlagiidae, and proposed as a junior synonym of Unenlagia comahuensis. The aim of the present paper is to include a detailed anatomical description of Neuquenraptor (up to the date only known by a preliminary description). Comparisons with other paravians, especially unenlagiids, resulted in the finding of characters that may be considered as diagnostic of Unenlagiidae (e.g., scar-like fourth trochanter of femur, metatarsal II with tongue-shaped process over the caudal surface of metatarsal III, well-developed convex longitudinal plantar crest of metatarsal IV). Furthermore, comparisons between Neuquenraptor and Unenlagia are carried out with the aim to evaluate the possible synonymy between these taxa. These comparisons indicate that at least two similar-sized unenlagiids were present on the Portezuelo Formation. However, in concordance with previous authors, we are not able to support nor dismiss the possible synonymy between Unenlagia and Neuquenraptor. Additional findings of unenlagiid fossils from the Portezulo Formation will help to clarify the taxonomic status of these taxa. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
32. Materiality and Indigenous Agency: Limits to the Colonial Order (Argentinean Patagonia, Eighteenth-Nineteenth Centuries).
- Author
-
Buscaglia, Silvana
- Subjects
INDIGENOUS peoples ,CULTURAL relations ,ETHNIC relations ,COLONIES ,HISTORY - Abstract
This paper highlights the agency of indigenous peoples in the manipulation, alteration, and/or definition of limits to the colonial order established in Patagonia by the end of the eighteenth century. Hence, it rests on the ideas of the ambivalence of power and intercultural relations. Interethnic relationships are explored in two case studies from the same colonizing project: 'Nueva Colonia y Fuerte de Floridablanca' (San Julián Bay, Santa Cruz province) and 'Fuerte San José' (Valdés peninsula, Chubut province). Social practices, material conditions of the colonial settlements, and particularly, the indigenous perceptions of the colonial posts are thoroughly considered. This information is thus intended to discuss the divergent trajectories of interethnic relationships, as well as to approach colonialism in Patagonia from the natives' logics. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
33. Geomorphology of the northeastern extreme of Isla Grande de Tierra del Fuego, Argentina.
- Author
-
Díaz Balocchi, Luis, Ponce, Juan Federico, Tripaldi, Alfonsina, and Magneres, Ignacio
- Subjects
GEOMORPHOLOGY ,VECTOR data ,FLUVIAL geomorphology ,SHEEP breeding ,LANDFORMS ,SEA level ,STEPPES ,SYSTEM dynamics - Abstract
A 1:60,000 scale geomorphological map of the Argentine side of the northeastern extreme of Isla Grande de Tierra del Fuego in southernmost South America is presented. This paper describes and summarizes the geomorphology of the mapped area, which includes glacial, periglacial, fluvial, coastal, aeolian, lacustrine, and anthropogenic landforms that span over 680 km
2 north of San Sebastián Bay in a sparsely populated semiarid and cold steppe used for sheep breeding and hydrocarbon extraction. We used Landsat-8, Sentinel-2, and ALOS-PALSAR satellite products combined with field validation to create the map. Glacial advances and retreats as well as climatic and sea level fluctuations that controlled fluvial systems and coastal dynamics were the main sculptors of the landscape during the Late Cenozoic. Aeolian, lacustrine, and anthropogenic activity were later minor contributors. The presented free, open access, vector geomorphological map is intended to be a supporting tool for multidisciplinary researchers and decision-makers. [ABSTRACT FROM AUTHOR]- Published
- 2020
- Full Text
- View/download PDF
34. Lama guanicoe bone collagen stable isotope (C and N) indicate climatic and ecological variation during Holocene in Northwest Patagonia.
- Author
-
Gil, Adolfo F., Otaola, Clara, Neme, Gustavo A., Peralta, Eva A., Abbona, Cinthia, Quiroga, Gisela, Dauverné, Armando, and Seitz, Viviana P.
- Subjects
- *
STABLE isotopes , *HOLOCENE Epoch , *BONES , *CLIMATE change , *COLLAGEN - Abstract
This paper explores how significant are the ecological and climatic variables to influence the stable isotopes of guanacos. Lama guanicoe bone collagen carbon and nitrogen stable isotope ratios are assumed as a macro regional average value in west Argentina, mostly as a baseline to model archaeological human diet. If stable isotopes on mammals reflex ecology and climate, we need to know how those variables influence mammals bone stable isotope ratio. This paper analyses the 13C/12C and 15 N/14N ratio on bone collagen on 122 guanacos from Northwest Patagonia during the Holocene. The results confirm significant variation in both isotopes between Monte and Andean-Patagonian specimens. Guanacos from Monte shows higher δ13C and δ15N than those from Andean-Patagonian. Temporal trends indicate variation through Holocene but this variation is not spatially homogeneous. In this paper we suggest that Medieval Climatic Anomaly had stronger effect in Monte desert than in Patagonia desert, generating driest and/or hottest conditions between 1250 and 600 years BP. Those variations need to be considered to reconstruct human diet at least during the second part of the Holocene. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
35. Interdisciplinary identification of the skeletal remains of Catherine Roberts‐Davies, The first Welsh settler death in Patagonia, Argentina in 1865.
- Author
-
Dahinten, Silvia, Otero, Julieta Gómez, Suby, Jorge, Coronato, Fernando, and Vullo, Carlos
- Subjects
ANTHROPOMETRY ,PIONEERS ,HUMAN skeleton ,VISCERAL leishmaniasis ,MIDDLE-aged persons ,MIDDLE-aged women ,GENEALOGY - Abstract
In 1995, an almost complete human skeleton was found in Punta Cuevas, in the southern coast of Puerto Madryn, Chubut, Argentina. The burial traits and the associated objects suggested the skeleton might belong to Mrs. Catherine Roberts‐Davies, a middle‐aged woman who was the first dead person among the first group of 163 Welsh settlers that set sail on May 28, 1865, from Liverpool to Bahía Nueva, in Argentinian Patagonia. The aim of this paper is to present the interdisciplinary studies conducted between 1995 and 2016 in order to identify these remains and to explore the possible causes of death. The age at death of the skeleton was estimated between 25 and 40 years old and sexed as female. The analyses of mtDNA haplogroup resulted in K2a, which is highly frequent in European populations. An ascendant maternal genealogy of Mrs. Roberts‐Davies was reconstructed, based on documentary sources. After this genealogical research, a living descendant, who currently lives in Wales, was found. An mtDNA analysis of control region 16024‐576 was compared among samples taken from the unknown skeleton and the descendant. The results confirmed that the skeleton found in Punta Cuevas belongs to Mrs. Catherine Roberts‐Davies. With respect to the cause of death, according to two historical medical reports, Mrs. Roberts‐Davies died from "black fever" (i.e., visceral leishmaniasis) or scurvy. Skeletal evidence suggests that she could have suffered from scurvy as a consequence of the harsh conditions of living during the trip from Liverpool and the first days after the arrival to Patagonia. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
36. An Applied Assessment Model to Evaluate the Socioeconomic Impact of Water Quality Regulations in Chile.
- Author
-
Yarrow, Matthew M., Tironi, Antonio, Ramírez, Alejandro, and Marín, Víctor H.
- Subjects
NATURAL resources management areas ,STAKEHOLDER theory ,SOCIOECONOMICS ,WATERSHEDS ,DEVELOPING countries ,WATER pollution potential - Abstract
In many developing countries, natural resource management is based on traditional, expert-based methods that often exclude a variety of stakeholders. This paper presents a conceptual model and methodology that represent a first step toward a more integrated evaluation and management of large basins. The main objective of this paper is to evaluate the socioeconomic impact of the application of secondary water quality regulations in the Aysén River Basin of Southern Chile. We employ the concept of physical, ecological and social (PHES)-system as a conceptual framework. Three indices based on this framework were created to characterize different aspects of the Aysén Basin: an environmental vulnerability index, an index of the water quality impact of the different economic sectors, and an index that quantifies the economic contribution of these sectors. Finally the three indices were combined as a measure of the socioeconomic impact of the proposed regulations in what we referred to as the 'applied assessment model'. Our results suggest that the applied regulations would have little socioeconomic impact on the Aysén Basin. Finally we discuss challenges to integrated watershed assessment in the context of developing countries. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
37. Worlding hydropower: river realities in the Chilean Patagonia.
- Author
-
Hernando-Arrese, Maite and Tironi, Manuel
- Subjects
WATER power ,ONTOLOGIES (Information retrieval) - Abstract
Copyright of Tapuya: Latin American Science, Technology & Society is the property of Taylor & Francis Ltd 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.)
- Published
- 2019
- Full Text
- View/download PDF
38. Socio-environmental conflicts as social cohesion thermometers: a case study.
- Author
-
Llosa, Carina
- Subjects
SOCIAL cohesion ,ENVIRONMENTAL sociology - Abstract
Copyright of Tapuya: Latin American Science, Technology & Society is the property of Taylor & Francis Ltd 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.)
- Published
- 2019
- Full Text
- View/download PDF
39. A Warm Tea: The Role of Temperature and Hydroperiod on Litter Decomposition in Temporary Wetlands
- Author
-
Madaschi, Candela and Díaz-Villanueva, Verónica
- Published
- 2022
- Full Text
- View/download PDF
40. Timing of the deformation in the Gondwanide orogeny: A structural and geochemical shift from syn- to post-tectonic magmatism recorded in the Permian Mamil Choique granitoids, Patagonia.
- Author
-
Grillo Vidal, Carolina, López de Luchi, Mónica Graciela, Martínez Dopico, Carmen, Ruffet, Gilles, Basei, Miguel A., Schulz, Bernhard, Wemmer, Klaus, Montenegro, Teresita, and Rossello, Eduardo
- Subjects
- *
SLABS (Structural geology) , *GEOCHEMISTRY , *CONTINENTAL crust , *MUSCOVITE , *RECRYSTALLIZATION (Metallurgy) , *URANIUM-lead dating ,GONDWANA (Continent) - Abstract
The Sierra de Mamil Choique calc-alkaline granite batholith, covering an area of 320 km2, serves as the key reference for Late Paleozoic magmatism in central-west Patagonia. It comprises I-type weakly to mildly peraluminous tonalites to granites (59.6–75.7%SiO2) displaying various deformational features. This paper presents a micro- and mesostructural study alongside temperature-pressure (T-P) constraints coupled with U-Pb zircon crystallization ages, as well as Ar-Ar and K-Ar mica ages, and mineral and whole-rock geochemistry. The older units (288 ± 1 Ma Cerro Mojón Monzogranite and 281 ± 2 Ma Huenchuquil Granodiorite), exhibit syn -kinematic banding and strong NW-SE foliation showing a transition from magmatic-sub magmatic to high-T subsolidus deformational features, such as parallel alignment of magmatic minerals, sub magmatic fractures, melt pockets, and chessboard subgrains in quartz. Quartz recrystallization by grain boundary migration is also observed. These microstructures developed concurrently with the regional D3 event that affected the Devonian metamorphic host. Their crystallization started at 8 Kbar and ∼ 790 °C within a thickened crust (La N /Yb N = 13–15, average). In contrast, the younger units (278 ± 2 Ma; Nahuelfil and Antinao Monzogranites) exhibit mainly magmatic deformation and display a NE-SW parallel alignment of mostly subhedral K-feldspar. A D4 deformation younger than 278 Ma, with a sigma 1 NW-SE (in plain view- horizontal) would have controlled the emplacement of Nahuelfil and Antinao Monzogranites. Younger zircon ages (ca 265 Ma) in the 278 Ma monzogranites would result from resetting due to the magmatic-hydrothermal alteration associated with the later magmatic pulse of leucogranites and pegmatites of the 267 ± 8 Ma (Rb-Sr WR isochron) La Pintada Leucogranites. These leucogranites were emplaced in an already thinner crust (La N /Yb N = 2.6 average). The latest magmatic activity is represented by two groups of pegmatitic bodies one from 265 ± 6 to 257 ± 3 Ma and a younger one of ca. 252–251 Ma (Ar-Ar and K-Ar muscovite cooling ages). All units share a common mafic source, but the younger units crystallized from melts at lower pressure and temperature (748–725 °C). The magmatism, involving crustal recycling, occurred at an active margin during a stage of thickened crust from 290 to 280 Ma, followed by gradual thinning after 280 Ma. This change in crustal thickness fits models proposing a continuous Permian subduction with a variable dip angle of the subducted slab along the southwestern margin of Gondwana. [Display omitted] • Gondwanide orogeny in Sierra Mamil Choique reached its magmatic climax in 288–265 Ma • Regional D3, bracketed between 290 and 280 Ma, is controlled by a horizontal NE-SW σ1 • Older units are syn -kinematic with D3 by its NW-SE banding and foliation • Post 295 Ma, a mostly mafic source in magmatism with upper crustal contamination • Crustal recycling results from a relatively thick crust in active continental margin [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
41. Evolving Social Media Strategies in Local Journalism: Experiences from Argentine Patagonia.
- Author
-
Rost, Alejandro, Bernardi, María Teresa, and Bergero, Fabián
- Abstract
Studies on journalistic work and production on social media typically focus on large media outlets in developed countries. In this article, we shift the lens to a peripheral area of a peripheral country: Argentine Patagonia. Our objective was to analyse journalistic production on Instagram, Facebook, and Twitter in the eight most-followed local and regional news media outlets. We analysed the narratives, the extent to which they apply transmedia journalism, and how they have evolved compared to studies from 2021. We also conducted structured interviews with social media managers to gain insight into their professional practices. We conclude that, 15 years since the creation of the first profiles, promoting website content remains the primary goal of North Patagonian media networks. Since 2021, there have been more frequent updates but less native production, especially on Facebook and Twitter. Despite the shortage of staff and precarious working conditions, some news media outlets have been able to innovate on Instagram, introducing a variety of multimedia formats, a more conversational tone, diverse update rhythms, adapted content, and even specific content that is organised into sections. Information production for the platforms has been integrated into journalistic routines even when public interaction with the audience remains very limited. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
42. Quantifying Blowdown Disturbance in Overstory Retention Patches in Managed Nothofagus pumilio Forests with Variable Retention Harvesting.
- Author
-
Martínez Pastur, Guillermo, Rodríguez-Souilla, Julián, Bottan, Lucía, Favoretti, Santiago, and Cellini, Juan M.
- Subjects
WIND damage ,LOGGING ,CLIMATE extremes ,FOREST resilience ,WINDFALL (Forestry) ,WINDSTORMS - Abstract
The natural resilience of the forests to face impacts of blowdown damages was affected by harvesting operations. Variable retention harvesting (VRH) increases forest structure heterogeneity in managed stands and decreases blowdown damages. The objective of this study was to characterize blowdown in Nothofagus pumilio forests managed with VRH in Southern Patagonia (Argentina). We analyzed long-term plots and one area affected by a windstorm after harvesting (exposure to winds and influence of retention patches) using univariate analyses. We found a differential impact in retention patches compared to dispersed retention after a windstorm considering aspect and distance to edge (e.g., blowdown trees: F = 6.64, p < 0.001). The aspect in retention patches presented few structural differences before the windstorm (e.g., tree diameter: F = 3.92, p = 0.014) but was not greatly influenced by the received damage after the windstorm. In long-term plots, we found that aspect and location in patches (distance to edge) determined the tree stability. We also found differences in wind damage considering retention level and design (e.g., aggregates and dispersed retention vs. aggregates and clear-cuts). We conclude that VRH increased the heterogeneity in harvested areas, where retention patches presented greater resilience in confronting extreme climate events and decreased recurrent wind exposure impacts in the long term. We found the marginal influence of aspect in the retention patches despite dominant winds and damages received by remnant trees during harvesting. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Habitat selection of the arboreal marsupial Dromiciopsgliroides and potential effects on the seed dispersal of the mistletoe Tristerixcorymbosus
- Author
-
Oliver, Agustina Balazote, Kazimierski, Laila D., Amico, Guillermo C., and Morales, Juan M.
- Published
- 2024
- Full Text
- View/download PDF
44. Environmental drivers of regional variations in upland goose (Chloephaga picta) color morphs
- Author
-
Cossa, Natalia A. and Bocelli, M. Lucía
- Published
- 2024
- Full Text
- View/download PDF
45. Unraveling the origin of the wild pig (Sus scrofa Linnaeus, 1758) from the northwest Patagonian region: evidence of hybridization processes and a possible pure wild boar population in a protected area
- Author
-
Figueroa, Carlos E., Carpinetti, Bruno N., Fernández, Gabriela P., Acosta, Diana B., Allister, Matias E. Mac, Giménez, Sergio R., Vassia, Marcelo A., and Merino, Mariano L.
- Published
- 2024
- Full Text
- View/download PDF
46. Higher establishment of nonnative trees with increased harvest intensity in strip cuttings
- Author
-
Dimarco, Romina D., Nacif, Marcos E., Garibaldi, Lucas A., and Nuñez, Martin A.
- Published
- 2024
- Full Text
- View/download PDF
47. Maritime Historical Cultural Heritage: Puerto Madryn City as a Case Study from Patagonia, Argentina
- Author
-
Gutiérrez, Guillermo and Elkin, Dolores
- Published
- 2024
- Full Text
- View/download PDF
48. Feeding Habits of the Patagonian Rockfish Sebastes oculatus (Sebastidae) in Central Patagonia, Atlantic Ocean
- Author
-
Marcinkevicius, M. S.
- Published
- 2024
- Full Text
- View/download PDF
49. Are southern temperate urban natural forests a suitable habitat for beetle diversity? A case study in Chile
- Author
-
Tello, Francisco, Tello-Arriagada, Cristobal, Olivares, Fernanda, LeQuesne, Carlos, Barahona-Segovia, Rodrigo M., and Montalva, Cristian
- Published
- 2024
- Full Text
- View/download PDF
50. Late Quaternary evolution of Viedma Lake and implications for hunter-gatherer mobility in the Southern Andean Patagonia, Argentina.
- Author
-
Horta, Luis R., Belardi, Juan Bautista, Georgieff, Sergio M., and Carballo Marina, Flavia
- Subjects
- *
WATERSHEDS , *ARCHAEOLOGICAL chronology , *LAKES , *ARCHAEOLOGICAL finds , *HOLOCENE Epoch , *PALEOGEOGRAPHY - Abstract
In order to understand the paleogeographic evolution of Viedma Lake (252 masl) sedimentary sequences with glaciolacustrine and lacustrine strata between 307 masl and 266 masl and bathymetric fluctuations between 27 ka. and 2.4 ka. were identified. The paleoenvironmental interpretation of the stratigraphic profiles was carried out based on the analysis of facies and their associations. The oldest age was recorded at 301 masl (27 ka) and the youngest corresponds to 266 masl (2.4 ka). The record of 27 ka was compared with another dated record of the Tar-San Martin Lakes basin showing that Viedma – Tar-San Martín Lakes were formed at similar ages. Taking into account that the deposits of Bahía Túnel are located at 266 masl and that the level of the lake would be above this height, it is proposed that this lake level would have restricted the movement of hunter-gatherer populations along the coast and to the west. From 2.4 ka on a new space started to be available for these populations broadening the wintering grounds (≤400 masl). The chronology of the archaeological record found in this new space fits the proposed paleogeographic evolution. This paper complements the research on the evolution of lacustrine systems in the Patagonian Mountain range and broadens the discussion of human mobility in the Viedma Lake basin during the Holocene. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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