Search Results - "Ojeda, Ricardo A."

Assessing the Use of Functional Diversity as a Measure of Ecological Resilience in Arid Rangelands by Chillo, Verónica, Anand, Madhur, Ojeda, Ricardo A.

“…It is becoming more apparent that species richness alone many not be sufficient to fully understand ecosystem resilience but that functional diversity…”
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Revision and analysis of the chromosome variability in the speciose genus Akodon (Rodentia, Sigmodontinae), including new data from Argentina by Labaroni, Carolina A, Mairhofer, Vaitiare A Paez Coll, Ojeda, Agustina A, Novillo, Agustina, Teta, Pablo, Jayat, Pablo, Ojeda, Ricardo A, Buschiazzo, Leandro M, Cálcena, Eugenio N, Bolzán, Alejandro D, Lanzone, Cecilia

“…Rodentia has a high species number and chromosomal variability. The South American genus Akodon is one of the most speciose muroids, with more than 40 species…”
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Geographic Variation in Cranial Morphology of the Southern Mountain Cavy, Microcavia australis (Rodentia, Caviidae): Taxonomic Implications, with the Description of a New Species by Teta, Pablo, Ojeda, Ricardo A, Lucero, Sergio O, D'Elía, Guillermo

“…We analyzed the geographic variation in cranial morphology of the Southern Mountain Cavy, Microcavia australis, throughout of its distributional range. Our…”
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Argentine science in crisis again by Ojeda, Ricardo A

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Fresh wave of cuts strikes Argentina’s science 18 years on by Ojeda, Ricardo A.

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Multi-scale patterns of habitat use by wild boar in the Monte Desert of Argentina by Fernanda Cuevas, M., Ojeda, Ricardo A., Jaksic, Fabian M.

“…A large number of protected areas worldwide have been impacted by biological invasions, threatening the biodiversity they aim to protect. The wild boar (Sus…”
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Functional diversity loss with increasing livestock grazing intensity in drylands: the mechanisms and their consequences depend on the taxa by Chillo, Verónica, Ojeda, Ricardo A., Capmourteres, Virginia, Anand, Madhur

“…1. Overgrazing is one of the main drivers of desertification in drylands, and livestock production is expected to increase in the next decades. The analysis of…”
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Niche partitioning and coexistence between two mammalian herbivores in the Dry Chaco of Argentina by Chillo, Verónica, Rodríguez, Daniela, Ojeda, Ricardo A.

“…Competitive interactions are known to be stronger between morphologically similar and phylogenetically closely related sympatric species. Patagonian mara (…”
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Loss of mammalian species from the South American Gran Chaco: empty savanna syndrome? by Periago, Maria E, Chillo, Verónica, Ojeda, Ricardo A

“…The Gran Chaco in central South America is a major savanna woodland ecosystem. Accelerated changes in land use within it have resulted in a complex matrix of…”
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Environmental heterogeneity and habitat use of the red viscacha rat in drylands of west‐central Argentina by Tarquino‐Carbonell, Andrea P., Ojeda, Ricardo A., Sobrero, Raúl, Ojeda, Agustina A.

“…Environmental heterogeneity shapes the traits of natural populations, including space use and burrowing behavior. We studied the red viscacha rat…”
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Beta diversity patterns in Andean rodents: current and historical factors as drivers of turnover and nestedness by Novillo, Agustina, Lanzone, Cecilia, Jayat, J. Pablo, Teta, Pablo, Ojeda, Agustina A., Cristobal, Luciana, Ojeda, Ricardo A.

“…The Andes are known to be one of the most species-rich regions on Earth, with their origination promoting formation of new habitats and acting as climatic…”
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exotic mammals of Argentina by Novillo, Agustina, Ojeda, Ricardo A

“…Exotic mammals in South America represent about 20% of world mammal introductions. The aim of our paper is to provide a global assessment of the exotic mammals…”
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Elevation patterns in rodent diversity in the dry Andes: disentangling the role of environmental factors by Novillo, Agustina, Ojeda, Ricardo A.

“…Biodiversity patterns are the result of the interaction of numerous contemporary factors and historical opportunities for allopatric speciation. Several…”
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Influence of climate change on the predicted distributions of the genus Tympanoctomys (Rodentia, Hystricomorpha, Octodontidae), and their conservation implications by Tarquino-Carbonell, A. P., Ojeda, Ricardo A., Ojeda, Agustina A.

“…Viscacha rats (genus TympanoctomysYepes, 1942) are ecologically, physiologically, and behaviorally unusual octodontid rodents endemic to the Monte and…”
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Phylogenetic relationships among cryptic species of the Phyllotis xanthopygus complex (Rodentia, Cricetidae) by Ojeda, Agustina A., Teta, Pablo, Pablo Jayat, J., Lanzone, Cecilia, Cornejo, Paula, Novillo, Agustina, Ojeda, Ricardo A.

“…The leaf‐eared mouse, Phyllotis xanthopygus (Waterhouse 1837) is a widely distributed sigmodontine rodent in South America, with populations ranging from…”
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Spatial and trophic niche of an assemblage of native and non-native herbivores of arid Argentina by Bobadilla, S. Yasmin, Dacar, Maria A., Jaksic, Fabian M., Ojeda, Ricardo A., Cuevas, Maria F.

“…The coexistence of ecologically similar species is facilitated by differential use of resources along habitat, diet, and/or temporal niche axes. We used feces…”
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A novel approach to assess livestock management effects on biodiversity of drylands by Chillo, Verónica, Ojeda, Ricardo A., Anand, Madhur, Reynolds, James F.

“…In drylands livestock grazing is the main production activity, but overgrazing due to mismanagement is a major cause of biodiversity loss. Continuous grazing…”
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Delayed mortality of males in Thylamys bruchi, a semelparous marsupial from the Monte Desert, Argentina by Albanese, M Soledad, Ojeda, Ricardo A, Astié, Andrea A

“…Abstract Male-only obligate semelparity is a well-studied reproductive strategy in some Australian marsupials. This strategy has not been documented in South…”
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Habitat and food preferences of European rabbits in core and edge populations along the invasion front Patagonia-Monte, Argentina by Bobadilla, Sabrina Yasmin, Dacar, María A, Jaksic, Fabián M, Ojeda, Ricardo A, Fernanda Cuevas, María

“…The European rabbit is an exotic herbivorous mammal undergoing an active phase of geographical expansion in the arid ecosystems of Argentina. The Adaptive…”
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The Phyllotis xanthopygus complex (Rodentia, Cricetidae) in central Andes, systematics and description of a new species by Jayat, J. Pablo, Teta, Pablo, Ojeda, Agustina A., Steppan, Scott J., Osland, Jared M., Ortiz, Pablo E., Novillo, Agustina, Lanzone, Cecilia, Ojeda, Ricardo A.

“…Phyllotis Waterhouse 1837 is one of the most studied genera of South American cricetid rodents. As currently understood, it includes 20 small to medium‐sized…”
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