Micromammals and paleoenvironments: Climatic oscillations in the Monte desert of Catamarca (Argentina) during the last two millenia

Ortíz, Pablo E.; Jaén, Mirta; Jayat, J. Pablo

doi:10.1016/j.jaridenv.2011.09.004

Cited by 22 publications

(17 citation statements)

References 27 publications

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“…auritus in northwestern Argentina at present times is evident from the study of many owl pellet samples and a number of trapping data. The species is absent in several highland localities characterized by potentially suitable environments , Ortiz and Jayat 2007a, Ortiz et al 2010, 2011b or attained very low frequencies, below 1 % (Jayat et al 2008, Ortiz et al 2012. The fossils of Reithrodon auritus in the area are indicative of colder and perhaps more xeric paleoenvironmental conditions, characterized by open areas with sparse grassy vegetation as those developed today around 3000 m elevation.…”

mentioning

confidence: 88%

The Quaternary record of Reithrodon auritus (Rodentia: Cricetidae) in northwestern Argentina and its paleoenvironmental meaning

Ortíz

Jayat

2012

Mammalia

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Abstract:Reithrodon auritus is a living sigmodontine with one of the broader temporal records, from the lower Pliocene of Argentina. Its populations in northwestern Argentina are today found patchily and restricted to five high-elevation and isolated localities in open areas of highland grasslands vegetation (at > 3000 m). During the Pleistocene and early Holocene, R. auritus would have had a broader range, reaching lower altitudes everywhere and being one of the dominant small mammal species in some fossil localities. In this note, we summarize the known Pleistocene and early Holocene fossil record of R. auritus in northwestern Argentina, provide new paleontological sites for the species, and make comments concerning the paleoenvironmental implications of its presence at such lower altitudes. The paleontological evidence indicates that during the Pleistocene and early Holocene, R. auritus inhabited around 1000 m below their current altitudinal distribution in the eastern Andean ranges, with populations clearly more abundant than today. The fossils of R. auritus are indicative of colder and perhaps more xeric paleoenvironmental conditions, characterized by open areas with sparse grassy vegetation as those developed today around 3000 m elevation.

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confidence: 88%

The Quaternary record of Reithrodon auritus (Rodentia: Cricetidae) in northwestern Argentina and its paleoenvironmental meaning

Ortíz

Jayat

2012

Mammalia

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“…La presente investigación se aborda desde una perspectiva interdisciplinaria, necesaria para comprender las relaciones mutuas que se dieron en el pasado entre la gente y su entorno, con un adecuado control cronológico (Tabla 1). Para ello se cuenta con antecedentes previos de estudios del equipo, tanto del tipo agroarqueológico (Korstanje y Cuenya, 2008Quesada y Korstanje, 2010;Quesada y Maloberti, 2010;Korstanje, 2011;Maloberti, 2012), como paleoecológicos del Holoceno (Madozzo Jaén, 2009;Sánchez et al, 2010;Cruz et al, 2011, Ortiz et al, 2012, a los que se aportan nuevas evidencias obtenidas del estudio de secuencias de terrazas holocenas expuestas, lagunas temporarias y mapeos geológicos y geomorfológicos. Se deriva al lector a la bibliografía citada para la descripción de las metodologías específicas, ya que al ser varias disciplinas, sería muy extenso explicar aquí a cada una de ellas.…”

Section: Métodosunclassified

“…A partir de principios actuales es posible realizar una reconstrucción paleoambiental confiable, ya que los micromamíferos presentan requerimientos ecológicos acotados y la mayor parte del registro está representado por formas vivientes (Tonni y Fildago, 1978). En el Valle de El Bolsón, en el sitio Cueva de Las Máscaras, se estudió el mayor depósito estratificado de micromamíferos del noroeste argentino (Gráfico 1), compuesto por más de 10.000 restos craneales y postcraneales (Ortiz y Pardiñas, 2001;Ortiz y Jayat, 2007;Ortiz, et al, 2012). El material fue excavado en una superficie de 1,5 m 2 ; la secuencia fue dividida en 7 capas definidas artificialmente cada 15 cm de profundidad, en la que se considera nivel 7 al más profundo y nivel 1 el más superficial y que representa la composición actual de la comunidad de micromamíferos.…”

Section: Secuencia De Micromamíferos De Cueva De Las Máscarasunclassified

“…Estas fluctuaciones climáticas en el Holoceno tardío habrían causado cambios en el ambiente, lo que modificó la extensión de las diferentes unidades de vegetación, reflejándose en las frecuencias de los micromamíferos de cada nivel de la secuencia (Ortiz, et al, 2012). La pequeña zona de caza de las lechuzas no incluye tierras potencialmente útiles para la agricultura, lo que nos permite interpretar nuestros resultados solo a escala local, minimizando la influencia humana en la composición del conjunto.…”

Section: Secuencia De Micromamíferos De Cueva De Las Máscarasunclassified

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DESARROLLO DEL PAISAJE HOLOCENO EN LA CUENCA DE EL BOLSÓN: GENTE Y AMBIENTE EN PROCESOS DE CAMBIO y ESTABILIDAD

et al. 2013

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Holocene landscape development in tHe el Bolson Basin: people, environment, and processes of cHange and staBility Julio Kulemeyer a , liliana lupo b , m. carolina madozzo Jaén c , alicia cruz d , patricia cuenya e , mariana maloberti f , gabriel cortés g y alejandra Korstanje h El valle de El Bolsón (Departamento de Belén, Catamarca, Argentina) tiene una larga historia de ocupaciones, sobre todo desde el inicio de la agricultura hasta la actualidad. Se presenta una primera integración local interdisciplinaria, utilizando diferentes proxies (sedimentos, suelos, mamíferos, polen y otros microfósiles) para contribuir a la primera discusión de los procesos de estabilidad y cambio en la historia social, paleoclimática y el medio ambiente en el valle durante el Holoceno. En tal sentido, observamos importantes cambios ambientales durante el Holoceno Tardío, que se manifiestan en forma de procesos de acumulación y erosión, cambios de uso del suelo e influencia antropogénica sobre los frágiles ecosistemas semiáridos en el contexto de las variaciones paleoclimáticas. Palabras claves: cambio ambiental, paisajes agrarios, interdisciplina. the valley of el Bolsón (department Belén, catamarca, argentina) has a long history of occupations, mainly since the beginning of agriculture until today. We present a first local interdisciplinary integration using different proxies (sediments, soils, mammals, pollen and other microfossils), to contribute to the first discussion of the processes of stability and change in social history, paleoclimate and environment in the valley during the Holocene. We observed significant environmental changes during the late Holocene, which manifest in the form of accumulation and erosion processes and changes in land use and anthropogenic influence on the fragile semi-arid ecosystems in the context of paleoclimatic variations.

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“…The great number of species and their wide geographical distribution across different habitats has been used to reconstruct past environments and climates around the world (e.g. Simonetti & Saavedra, 1997;Aguilar et al, 1999;Winkler, 2002;Ortiz et al, 2012;Tammone et al, 2014;Hadler et al, 2016). South American sigmodontine fossils are recorded from the upper Miocene-Pliocene onwards (see Barbiere et al, 2016 and references therein), and, in Brazil, several remains have been collected from Quaternary deposits, such as those recovered from Lagoa Santa caves, Minas Gerais, by the Danish naturalist Peter W. Lund during the 19th century (Lund, 1950).…”

Section: Introductionmentioning

confidence: 99%

Sigmodontine rodents (Rodentia, Cricetidae) from Quaternary cave deposits of Serra da Capivara, Northeastern Brazil

Neves

Mayer

Hadler

et al. 2017

Rev. bras. paleontol.

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-SIGMODONTINE RODENTS (RODENTIA, CRICETIDAE) FROM QUATERNARY CAVE DEPOSITS OF SERRA DA CAPIVARA, NORTHEASTERN BRAZIL. The Serra da Capivara National Park, State of Piauí, Brazil, and surrounding areas preserves a rich archeological and paleontological record of South American mammals. It includes a great amount of sigmodontine rodent remains recovered from limestone caves and rock shelters. We studied sigmodontine material from three caves, named Toca do Gordo do Garrincho, Toca do Barrigudo, and Toca do Serrote das Moendas, and identified the following taxa: Bibimys sp., Necromys lasiurus, Pseudoryzomys simplex, Holochilus sciureus, Cerradomys sp., Calomys sp., and Wiedomys sp. This is the first record of Bibimys for the Quaternary of northeast Brazil, which suggests that the paleobiogeographic distribution of this genus was different from its currently known range. Thus, we contribute to the knowledge of Quaternary sigmodontine rodents through these new taxonomic records and highlight the great potential of Serra da Capivara paleontological deposits for clarifying the biogeographic dynamics of this group during this period. Key words:Bibimys, Pleistocene, Holocene, caves, mammals, paleobiogeography.RESUMO -Na região do Parque Nacional Serra da Capivara, Estado do Piauí, Brasil, conhecida pelas descobertas arqueológicas e paleontológicas, numerosos restos de roedores Sigmodontinae foram recuperados de grutas e abrigos calcários. O material aqui estudado provém de três cavernas da região: Toca do Gordo do Garrincho, Toca do Barrigudo e Toca do Serrote das Moendas. Foram identificados os táxons Bibimys sp., Necromys lasiurus, Pseudoryzomys simplex, Holochilus sciureus, Cerradomys sp., Calomys sp. e Wiedomys sp., sendo o registro de Bibimys inédito para o Quaternário do nordeste brasileiro, sugerindo uma distribuição paleobiogeográfica diferente da atualmente conhecida para este táxon. Assim, contribuímos para o conhecimento dos sigmodontíneos do Quaternário do Brasil com novos registros do grupo para a Serra da Capivara, mostrando que os materiais recuperados na região apresentam grande potencial para fornecer esclarecimentos sobre a dinâmica biogeográfica destes roedores ao longo do Quaternário.

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Micromammals and paleoenvironments: Climatic oscillations in the Monte desert of Catamarca (Argentina) during the last two millenia

Cited by 22 publications

References 27 publications

The Quaternary record of Reithrodon auritus (Rodentia: Cricetidae) in northwestern Argentina and its paleoenvironmental meaning

The Quaternary record of Reithrodon auritus (Rodentia: Cricetidae) in northwestern Argentina and its paleoenvironmental meaning

DESARROLLO DEL PAISAJE HOLOCENO EN LA CUENCA DE EL BOLSÓN: GENTE Y AMBIENTE EN PROCESOS DE CAMBIO y ESTABILIDAD

Sigmodontine rodents (Rodentia, Cricetidae) from Quaternary cave deposits of Serra da Capivara, Northeastern Brazil

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