Download The
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Sedimentary Record of Andean Mountain Building
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/321814349 Sedimentary record of Andean mountain building Article in Earth-Science Reviews · March 2018 DOI: 10.1016/j.earscirev.2017.11.025 CITATIONS READS 12 2,367 1 author: Brian K. Horton University of Texas at Austin 188 PUBLICATIONS 5,174 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Petroleum Tectonic of Fold and Thrust Belts View project Collisional tectonics View project All content following this page was uploaded by Brian K. Horton on 15 December 2018. The user has requested enhancement of the downloaded file. Earth-Science Reviews 178 (2018) 279–309 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Invited review Sedimentary record of Andean mountain building T Brian K. Horton Department of Geological Sciences and Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78712, United States ARTICLE INFO ABSTRACT Keywords: Integration of regional stratigraphic relationships with data on sediment accumulation, provenance, Andes paleodrainage, and deformation timing enables a reconstruction of Mesozoic-Cenozoic subduction-related Fold-thrust belts mountain building along the western margin of South America. Sedimentary basins evolved in a wide range of Foreland basins structural settings on both flanks of the Andean magmatic arc, with strong signatures of retroarc crustal Orogeny shortening, flexure, and rapid accumulation in long-lived foreland and hinterland basins. Extensional basins also Sediment provenance formed during pre-Andean backarc extension and locally in selected forearc, arc, and retroarc zones during Late Stratigraphy Subduction Cretaceous-Cenozoic Andean orogenesis. -
Diversity Patterns and Conservation Status of Native Argentinean Crucifers (Brassicaceae)
DARWINIANA, nueva serie 8(2): 530-566. 2020 Versión de registro, efectivamente publicada el 18 de diciembre de 2020 DOI: 10.14522/darwiniana.2020.82.922 ISSN 0011-6793 impresa - ISSN 1850-1699 en línea DIVERSITY PATTERNS AND CONSERVATION STATUS OF NATIVE ARGENTINEAN CRUCIFERS (BRASSICACEAE) Diego L. Salariato ID & Fernando O. Zuloaga ID Instituto de Botánica Darwinion (CONICET-ANCEFN), Labardén 200, Casilla de Correo 22, B1642HYD San Isidro, Buenos Aires, Argentina; [email protected] (author for correspondence). Abstract. Salariato, D. L. & F. O. Zuloaga. 2020. Diversity patterns and conservation status of native argentinean crucifers (Brassicaceae). Darwiniana, nueva serie 8(2): 530-566. Global warming, coupled with habitat destruction and human activity, are accelerating the rates of species extinction worldwide. Species-extinction risk assessment using the IUCN Red List categories, together with the study of the spatial patterns of biodiversity, are fundamental approaches for identifying conservation priorities and targeting government decisions to mitigate impacts on biodiversity. Here, we analyzed the geographic distribution of Argentinean species of Brassicaceae using species point distributional data. In this way, we classified species following the IUCN threat categories at a regional level, and analyzed patterns of richness, endemism, and threat on the different ecoregions and biomes of the country. In addition, we also explored differences in elevation, annual mean temperature, annual precipitation, and aridity between endemic vs. non-endemic and threatened vs. non-threatened species. The results showed that of the 162 Argentinean taxa, 58 species were here categorized as threatened (VU, EN, or CR) (36%). However, when only endemics are considered, more than half of these (33 spp, 57%) are threatened. -
Of Sea Level Rise Mediated by Climate Change 7 8 9 10 Shaily Menon ● Jorge Soberón ● Xingong Li ● A
The original publication is available at www.springerlink.com Biodiversity and Conservation Menon et al. 1 Volume 19, Number 6, 1599-1609, DOI: 10.1007/s10531-010-9790-4 1 2 3 4 5 Preliminary global assessment of biodiversity consequences 6 of sea level rise mediated by climate change 7 8 9 10 Shaily Menon ● Jorge Soberón ● Xingong Li ● A. Townsend Peterson 11 12 13 14 15 16 17 S. Menon 18 Department of Biology, Grand Valley State University, Allendale, Michigan 49401-9403 USA, 19 [email protected] 20 21 J. Soberón 22 Natural History Museum and Biodiversity Research Center, The University of Kansas, 23 Lawrence, Kansas 66045 USA 24 25 X. Li 26 Department of Geography, The University of Kansas, Lawrence, Kansas 66045 USA 27 28 A. T. Peterson 29 Natural History Museum and Biodiversity Research Center, The University of Kansas, 30 Lawrence, Kansas 66045 USA 31 32 33 34 Corresponding Author: 35 A. Townsend Peterson 36 Tel: (785) 864-3926 37 Fax: (785) 864-5335 38 Email: [email protected] 39 40 The original publication is available at www.springerlink.com | DOI: 10.1007/s10531-010-9790-4 Menon et al. Biodiversity consequences of sea level rise 2 41 Running Title: Biodiversity consequences of sea level rise 42 43 Preliminary global assessment of biodiversity consequences 44 of sea level rise mediated by climate change 45 46 Shaily Menon ● Jorge Soberón ● Xingong Li ● A. Townsend Peterson 47 48 49 Abstract Considerable attention has focused on the climatic effects of global climate change on 50 biodiversity, but few analyses and no broad assessments have evaluated the effects of sea level 51 rise on biodiversity. -
New Species Discoveries in the Amazon 2014-15
WORKINGWORKING TOGETHERTOGETHER TO TO SHARE SCIENTIFICSCIENTIFIC DISCOVERIESDISCOVERIES UPDATE AND COMPILATION OF THE LIST UNTOLD TREASURES: NEW SPECIES DISCOVERIES IN THE AMAZON 2014-15 WWF is one of the world’s largest and most experienced independent conservation organisations, WWF Living Amazon Initiative Instituto de Desenvolvimento Sustentável with over five million supporters and a global network active in more than 100 countries. WWF’s Mamirauá (Mamirauá Institute of Leader mission is to stop the degradation of the planet’s natural environment and to build a future Sustainable Development) Sandra Charity in which humans live in harmony with nature, by conserving the world’s biological diversity, General director ensuring that the use of renewable natural resources is sustainable, and promoting the reduction Communication coordinator Helder Lima de Queiroz of pollution and wasteful consumption. Denise Oliveira Administrative director Consultant in communication WWF-Brazil is a Brazilian NGO, part of an international network, and committed to the Joyce de Souza conservation of nature within a Brazilian social and economic context, seeking to strengthen Mariana Gutiérrez the environmental movement and to engage society in nature conservation. In August 2016, the Technical scientific director organization celebrated 20 years of conservation work in the country. WWF Amazon regional coordination João Valsecchi do Amaral Management and development director The Instituto de Desenvolvimento Sustentável Mamirauá (IDSM – Mamirauá Coordinator Isabel Soares de Sousa Institute for Sustainable Development) was established in April 1999. It is a civil society Tarsicio Granizo organization that is supported and supervised by the Ministry of Science, Technology, Innovation, and Communications, and is one of Brazil’s major research centres. -
RESEARCH Geochemistry and 40Ar/39Ar
RESEARCH Geochemistry and 40Ar/39Ar geochronology of lavas from Tunupa volcano, Bolivia: Implications for plateau volcanism in the central Andean Plateau Morgan J. Salisbury1,2, Adam J.R. Kent1, Néstor Jiménez3, and Brian R. Jicha4 1COLLEGE OF EARTH, OCEAN, AND ATMOSPHERIC SCIENCES, OREGON STATE UNIVERSITY, CORVALLIS, OREGON 97331, USA 2DEPARTMENT OF EARTH SCIENCES, DURHAM UNIVERSITY, DURHAM DH1 3LE, UK 3UNIVERSIDAD MAYOR DE SAN ANDRÉS, INSTITUTO DE INVESTIGACIONES GEOLÓGICAS Y DEL MEDIO AMBIENTE, CASILLA 3-35140, LA PAZ, BOLIVIA 4DEPARTMENT OF GEOSCIENCE, UNIVERSITY OF WISCONSIN–MADISON, MADISON, WISCONSIN 53706, USA ABSTRACT Tunupa volcano is a composite cone in the central Andean arc of South America located ~115 km behind the arc front. We present new geochemical data and 40Ar/39Ar age determinations from Tunupa volcano and the nearby Huayrana lavas, and we discuss their petrogenesis within the context of the lithospheric dynamics and orogenic volcanism of the southern Altiplano region (~18.5°S–21°S). The Tunupa edifice was constructed between 1.55 ± 0.01 and 1.40 ± 0.04 Ma, and the lavas exhibit typical subduction signatures with positive large ion lithophile element (LILE) and negative high field strength element (HFSE) anomalies. Relative to composite centers of the frontal arc, the Tunupa lavas are enriched in HFSEs, particularly Nb, Ta, and Ti. Nb-Ta-Ti enrichments are also observed in Pliocene and younger monogenetic lavas in the Altiplano Basin to the east of Tunupa, as well as in rear arc lavas elsewhere on the central Andean Plateau. Nb concentrations show very little variation with silica content or other indices of differentiation at Tunupa and most other central Andean composite centers. -
A Conservation Assessment of the Terrestrial Ecoregions of Latin America and the Caribbean
A Conservation Assessment Public Disclosure Authorized of the Terrestrial Ecoregions of Latin America and the Caribbean Public Disclosure Authorized Public Disclosure Authorized Eric Dinerstein David M. Olson Douglas ). Graham Avis L. Webster Steven A. Primm Marnie P. Bookbinder George Ledec Public Disclosure Authorized r Published in association with The World Wildlife Fund The World Bank WWF Washington, D.C. A ConservationAssessment of the TerrestrialEcoregions of Latin America and the Caribbean A Conservation Assessment of the Terrestrial Ecoregions of Latin America and the Caribbean Eric Dinerstein David M. Olson Douglas J. Graham Avis L. Webster Steven A. Primm Marnie P. Bookbinder George Ledec Published in association with The World Wildlife Fund The World Bank Washington, D.C. © 1995 The International Bank for Reconstruction and Development/The World Bank 1818 H Street, N.W., Washington, D.C. 20433, U.S.A. All rights reserved Manufactured in the United States of America First printing September 1995 The findings, interpretations, and conclusions expressed in this study are entirely those of the authors and should not be attributed in any manner to the World Bank, to its affiliated organiza- tions, or to members of its Board of Executive Directors or the countries they represent. The World Bank does not guarantee the accuracy of the data included in this publication and accepts no responsibility whatsoever for any consequence of their use. The boundaries, colors, denominations, and other information shown on any map in this volume do not imply on the part of the World Bank any judgment on the legal status of any territory or the endorsement or acceptance of such boundaries. -
A Spatial Analysis Approach to the Global Delineation of Dryland Areas of Relevance to the CBD Programme of Work on Dry and Subhumid Lands
A spatial analysis approach to the global delineation of dryland areas of relevance to the CBD Programme of Work on Dry and Subhumid Lands Prepared by Levke Sörensen at the UNEP World Conservation Monitoring Centre Cambridge, UK January 2007 This report was prepared at the United Nations Environment Programme World Conservation Monitoring Centre (UNEP-WCMC). The lead author is Levke Sörensen, scholar of the Carlo Schmid Programme of the German Academic Exchange Service (DAAD). Acknowledgements This report benefited from major support from Peter Herkenrath, Lera Miles and Corinna Ravilious. UNEP-WCMC is also grateful for the contributions of and discussions with Jaime Webbe, Programme Officer, Dry and Subhumid Lands, at the CBD Secretariat. Disclaimer The contents of the map presented here do not necessarily reflect the views or policies of UNEP-WCMC or contributory organizations. The designations employed and the presentations do not imply the expression of any opinion whatsoever on the part of UNEP-WCMC or contributory organizations concerning the legal status of any country, territory or area or its authority, or concerning the delimitation of its frontiers or boundaries. 3 Table of contents Acknowledgements............................................................................................3 Disclaimer ...........................................................................................................3 List of tables, annexes and maps .....................................................................5 Abbreviations -
A Formal Definition of the Paramo-Punan Biogeographic
Reu. MILS.Argentina Cienc. Nat., n.s. 3(1/: 1-12,2001 Buenos A~res.ISSN 1514-5158 A formal definition of the Para~no-Punanbiogeographic subre&on and its provinces, based mainly on animal ta%a Juan J. MORRONE Museo dc Zoologia, Facultad de Ciencias, UNAM, Apdo. Postal 70-399,04510 Mexico RE,Mhxico Abstract: The Paramo-Pundn subregion comprises the Andean hig-hlanck between western Venezueid and cen- tral western Argentina. It comprises five provinces: North Andean Paramo (high peaks of Vcnozuela, Colombia, Emador; and northern Peru, above 3000 m), Coastal Peruvian Desert (narrow strip along the Pacific Ocean coast, from northern Paru to northern Chile),Puna (southernBolivia, northern Chile, northern Argentina, and southern Peru), Atmama (northern Chile), and Prcpuna (central western Argentina, fiom Jiijuy to northern Mendoza). The subregion and its provinces are defined and characterized by endemic twra, specially animals. Key words: Paramo, Puna, South America, biogeography, regianaliarition,tracks The Andean-Palagonian domain of Cabrera & RESULTS Willink (1973), comprising the Altoandean, Punan, Desert, Central Chilean, and Patagonian I'aramo-Punan subregion provinces, does not constitute a natural (Figs. 1,2) biogeographic unit. Recent studies (Fjeldsg, 1992; The Paramo-Punan subregion comprises the Morrone & Urtubey, 1997; Morrone et al., 1997; Andean highlands between western Venezuela Posadaset al., 1997) have shown that the Central and central western Argentina (Cabrera & Chilean and Patagonian provinces are not closely Willink, 1973; Morrone, 1994b, 1996, 1999). it related to the rest. Furthermore, the Paramo comprises five provinces (Fig. 1): North Andean exhibits historical relationships with the Paramo, Coastal Peruvian Desert, Puna, Atacama, remaining Andean-Patagonian provinces, in spite and Prepuna provinces. -
17628-56278-1-PB.Pdf (729.0Kb)
Caldasia 23(1): 43-76 TOW ARD A CLADISTIC MODEL FOR THE CARIBBEAN SUBREGION: DELIMITATION OF AREAS OF ENDEMISM JUAN J. MORRONE Museo de Zoología, Facultad de Ciencias, UNAM, Apartado 70-399, 04510 México D.F., México. RESUMEN Se propone un nuevo esquema biogeográfico para la subregión Caribeña, de acuer- do con el cual se reconocen las siguientes 29 provincias: Sierra Madre Occidental (oeste de México: estados de Chihuahua, Durango, Zacatecas, Sonora, Sinaloa, Nayarit y Jalisco, por encima de los 1000 m), Sierra Madre Oriental (este de México: estados de San Luis Potosí, Coahuila, Hidalgo, Nuevo León y Querétaro, por encima de los 1500 m), Eje Volcánico Transmexicano (centro de México: estados de Guanajuato, México, Distrito Federal, Jalisco, Michoacán, Puebla, Oaxaca, Tlaxcala y Veracruz), Depresión del Balsas (centro de México: estados de Guerrero, México, Jalisco, Michoacán, Morelos, Oaxaca y Puebla, por debajo de los 2000 m), Sierra Madre del Sur (centro sur de México, desde el sur de Michoacán hasta Guerrero y Oaxaca, y parte de Puebla, por encima de los 1000 m), Golfo de México (costa del Golfo de México, en el este de México, Belice y norte de Guatemala), Península de Yucatán (Península de Yucatán, en los estados mexicanos de Campeche, Yucatán y Quintana Roo, por debajo de los 200 m), Costa Pacífica Mexicana (oeste de México, en la costa pacífica de los estados de Sinaloa, Nayarit, Colima, Jalisco, Michoacán, Guerrero, Oaxaca y Chiapas), Chiapas (México, Guatemala y Nicaragua, básicamen- te corresponde a la Sierra Madre de Chiapas, desde 500 a 2000 m), Oriente de Amé- rica Central (este de América Central, desde Guatemala hasta Panamá), Oeste del Istmo de Panamá (oeste de América Central, desde Costa Rica hasta el oeste de Panamá), Bahamas (archipiélago de las Bahamas, comprende las islas de Abaco- Grand Bahama, Andros-Bimini, Cat, Crooked-Mayaguana, Exumas, Inaguas, Long- Ragged Island Range, Mona, New Providence-Eleutheras, San Salvador-Rum Cay, St. -
Change and Continuity in a Pastoralist Community in the High Peruvian Andes
Hum Ecol (2008) 36:535–551 DOI 10.1007/s10745-008-9186-1 Change and Continuity in a Pastoralist Community in the High Peruvian Andes Julio C. Postigo & Kenneth R. Young & Kelley A. Crews Published online: 16 July 2008 # Springer Science + Business Media, LLC 2008 Abstract Pastoralists of the high Andes Mountains raise linking social science and remote sensing (Bradley and mixed herds of camelids and sheep. This study evaluates the Millington 2006; Fox et al. 2003; Jiang 2003; Liverman et land use of herdsmen who are confronted by both socioeco- al. 1998; Rindfuss et al. 2003; Rindfuss and Stern 1998; nomic and climate changes in Huancavelica, central Peru. Rindfuss et al. 2004). Though there are recent studies Land use/ land cover change (LULCC) was measured through conducted in the Andes that use remote sensing to satellite imagery, and pastoralists’ capacity to adapt to socio- understand vegetation dynamics (Bradley and Millington environmental changes was evaluated through interviews and 2006; Bustamante Becerra 2006; Millington and Jehangir archival research. The most dynamic LULCCs between 1990 2000) and pastoralist societies (Alzérreca et al. 2006; and 2000 were large increases in wetlands and a loss of Molinillo and Monasterio 1997; 2006), there are fewer permanent ice. We conclude that the people’sresponsesto studies examining LULCC of mountain pastoralism. Meth- these changes will depend on availability of institutions to odological problems (Fox et al. 2003) related to the manage pastures, other household resources, and perceptions topography of mountainous landscapes, to the mobility of of these biophysical changes. Socioenvironmental change is the pastoralists (i.e., transhumance or nomadism; BurnSilver not new in the study area, but current shifts will likely force et al. -
On the Origin of Epithermal Sn-Ag-Zn Mineralization at the Pirquitas Mine
On the origin of epithermal Sn-Ag-Zn mineralization at the Pirquitas mine, NW Argentina: fluid inclusion and isotopic constraints kumulative Dissertation zur Erlangung des akademischen Grades „doctor rerum naturalium” (Dr. rer. Nat.) in der Wissenschaftsdisziplin „Geochemie“ eingereicht an der MATHEMATISCH-NATURWISSENSCHAFTLICHEN FAKULTÄT DER UNIVERSITÄT POTSDAM von Louis Desanois Potsdam, im Februar 2019 Datum der Disputation: 22.05.2019 2 Supervisor: Dr. Robert Trumbull 1: Referee GFZ German Research Center for Geosciences, Potsdam, Germany Supervisor: Prof. Dr. Uwe Altenberger 2: Referee University of Potsdam, Institute of Earth and Environnemental Science, Germany 3: Referee Prof. Dr. Bernd Lehmann Technische Universität Clausthal | TUC · Department of Geology and Paleontology Published online at the Institutional Repository of the University of Potsdam: https://doi.org/10.25932/publishup-43082 https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-430822 4 Abstract Die zentralen Anden beherbergen große Reserven von unedlen und Edelmetallen. Die Region war 2017 ein wichtiger Teil der weltweiten Bergbautätigkeit. Bisher wurden drei Hauptlagerstätten identifiziert und untersucht: 1) Porphyr-Lagerstätten, die sich von Zentralchile und Argentinien bis Bolivien und Nord-Peru erstrecken; 2) Eisenoxid-Kupfer-Gold-Lagerstätten (IOCG), die sich von Zentralperu bis Zentralchile ausdehnen, sowie 3) polymetallische epithermale Zinnlagerstätten, die sich von Südperu bis nach Nordargentinien erstrecken und einen Großteil der Lagerstätten des bolivianischen Zinngürtels (Bolivian Tin Belt - BTB) bilden. Lagerstätten im BTB können in zwei Haupttypen unterteilt werden: (1) polymetallische Lagerstätten aus Zinn-Wolfram-Zink im Zusammenhang mit Plutonen und (2) polymetallische Zinn-Silber-Blei-zink Anlagerungen in epithermalen gangförmigen Lagerstätten. Mina Pirquitas ist eine epithermale Zinn-Silber-Blei-Zink-Polymetallvenenlagerstätte im Nordwesten Argentiniens, die früher eine der wichtigsten Zinnsilber-Mine meines Landes war. -
Land Systems' Asymmetries Across Transnational Ecoregions in South America
Sustainability Science (2021) 16:1519–1538 https://doi.org/10.1007/s11625-021-00967-2 ORIGINAL ARTICLE Land systems’ asymmetries across transnational ecoregions in South America M. Piquer‑Rodríguez1,2,3 · N. I. Gasparri1 · L. Zarbá1 · E. Aráoz1 · H. R. Grau1 Received: 25 June 2020 / Accepted: 27 April 2021 / Published online: 9 June 2021 © The Author(s) 2021, corrected publication 2021 Abstract The landscape confguration of socio-ecological land systems results from the interaction between the environmental condi- tions (relatively homogeneous within ecoregions) and country-level management and land-use decisions. However, social, land-use and sustainability research disciplines often study each independently. We used Euclidean distance analyses of fve indicators of land systems functioning to explore the geographical patterns of across-border human-induced asymmetries in transnational ecoregions of South America. The most asymmetric transnational ecoregions occurred in the tropical rainfor- est biome which also showed the widest range of asymmetry values compared to other biomes. In contrast, transnational ecoregions in montane grasslands showed comparatively little asymmetries, and tropical dry forests showed intermediate asymmetry values. This pattern indicates that major asymmetries occur in land systems located in productive biomes with a comparatively recent history of development, whereas mature socio-ecosystems with a long history of human land use are more homogeneous across borders. In some cases, asymmetries may stabilize as a consequence of reinforcing feedbacks that promote contrasting land-use decisions across borders, including, for example, the establishment of protected areas, or the promotion of agro-industrial activities. Transnational socio-ecological land systems can be used to evaluate alternatives for sustainable development because they highlight the infuence of institutions under diferent governance regimes in defning the spatial confguration and ecological properties of regions.