15 Works

Data from: A reevaluation of the Andean Genus Petroravenia (Brassicaceae: Thelypodieae) based on morphological and molecular data

Diego L. Salariato, Fernando O. Zuloaga & Ihsan A. Al-Shehbaz
Abstract Petroravenia was until recently considered as a genus of three species (P. eseptata, P. friesii, and P. werdermannii) distributed along the Central Andes of Argentina, Bolivia, Chile, and Peru. This genus was included in the tribe Thelypodieae and was morphologically characterized by being tiny rhizomatous perennial herbs with rosulate leaves, dendritic trichomes, capsular silicles, and incumbent cotyledons. However, the phylogeny of Petroravenia, and its tribal placement, was never analyzed using molecular data. The lack...

Data from: Palaeoproteomics resolves sloth phylogeny

Samantha Presslee, Graham J. Slater, Francois Pujos, Analia M. Forasiepi, Roman Fischer, Kelly Molloy, Meaghan Mackie, Jesper V. Olsen, Alejandro Kramarz, Matias Taglioretti, Fernando Scaglia, Maximiliano Lezcano, José Luis Lanata, John Southon, Robert Feranec, Jonathan Bloch, Adam Hajduk, Fabiana M. Martin, Rodolfo Salas Gismondi, Marcelo Reguero, Christian De Muizon, Alex Greenwood, Brian T. Chait, Kirsty Penkman, Matthew Collins … & Ross D. E. MacPhee
The living tree sloths Choloepus and Bradypus are the only remaining members of Folivora, a major xenarthran radiation that occupied a wide range of habitats in many parts of the western hemisphere during the Cenozoic, including both continents and the West Indies. Ancient DNA evidence has played only a minor role in folivoran systematics, as most sloths lived in places not conducive to genomic preservation. Here we utilize collagen sequence information, both separately and in...

Data from: Ecological and spatial patterns associated with diversification of the shrub genus Tetraglochin along Southern-Central Andes (Rosaceae)

Diego Leonel Salariato, Juan Manuel Acosta & Ana María Cialdella
In addition to the degree of geographical isolation (sympatry, parapatry, allopatry and peripatry), ecology can be an important factor promoting diversification of lineages, both by niche divergence as well as niche conservatism. Tetraglochin is a genus of shrubs with six species distributed along the Southern and Central Andes, from Peru to southern Argentina and central Chile. Although monophyly of the genus as the identity of its species are well established, spatiotemporal framework for its diversification...

Data from: Northernmost distribution of the Andean bear (Tremarctos ornatus) in South America, and fragmentation of its associated Andean forest and Paramo ecosystems

Daniel Rodríguez, Adriana Reyes, Nicolás Reyes-Amaya, Silvana Gallegos-Sánchez, Jorge Gutierre, Raúl Suárez & Fernando Prieto
Current northernmost distribution of the Andean bear (Tremarctos ornatus) is not defined precisely; mentioned to be located “at the Serranía del Perijá” without accurate/confirmed distribution records, and placed by the IUCN at the Serranía de Portuguesa (Venezuela). There is an information gap on the fragmentation of the Andean bear associated ecosystems (Andean forest and Paramo) throughout its distribution in Colombia and Venezuela. The aim of this study is to provide precise knowledge on the current...

Data from: Colonization history and population differentiation of the Honey Bees (Apis mellifera L.) in Puerto Rico

Jenny P. Acevedo-Gonzalez, Alberto Galindo-Cardona, Arian Avalos, Charles W. Whitfield, Dania M. Rodriguez, Jose L. Uribe-Rubio & Tugrul Giray
Honey bees (Apis mellifera L.) are the primary commercial pollinators across the world. The subspecies A. m. scutellata originated in Africa and was introduced to the Americas in 1956. For the last 60 years it hybridized successfully with European subspecies, previous residents in the area. The result of this hybridization was called Africanized Honey Bee (AHB). AHB has spread since then, arriving to Puerto Rico (PR) in 1994. The honey bee population on the island...

Temporal Inflection Points in Decorated Pottery: a Bayesian Refinement of the Late Formative Chronology in the Southern Lake Titicaca Basin, Bolivia

Christine Hastorf, Erik Marsh, Andrew Roddick, Maria Bruno, Scott Smith & John Janusek
The Late Formative Period immediately precedes the emergence of Tiwanaku, one of the earliest South American states, yet is one of the most poorly understood periods in the southern Lake Titicaca Basin (Bolivia). In this paper, we refine this period’s ceramic chronology with large sets of dates from eight sites, focusing on temporal inflection points in decorated ceramic styles. These points, estimated here by Bayesian models, index specific moments of change: (1) cal AD 140...

Data from: Thresholds in forest bird communities along woody vegetation gradients in the South American Dry Chaco

Leandro Macchi, Matthias Baumann, Hendrik Bluhm, Matthew Baker, Christian Levers, Héctor Ricardo Grau & Tobias Kuemmerle
1. Worldwide, tropical savannas and dry forests are under increasing pressure from land use. The environmental impacts of agricultural expansion into these ecosystems have received much attention, yet subtler changes in natural vegetation remain severely understudied. 2. We explored how bird communities vary along gradients of woody vegetation in the South American Dry Chaco by combining high-resolution, satellite-based tree, shrub, and total woody cover with field data on the frequency of 82 bird species surveyed...

Data from: Signatures of divergence, invasiveness and terrestralization revealed by four apple snail genomes

Jin Sun, Huawei Mu, Jack C. H. Ip, Runsheng Li, Ting Xu, Alice Accorsi, Alejandro Sánchez Alvarado, Eric Ross, Yi Lan, Yanan Sun, Alfredo Castro-Vazquez, Israel A. Vega, Horacio Heras, Santiago Ituarte, Bert Van Bocxlaer, Kenneth A. Hayes, Robert H. Cowie, Zhongying Zhao, Yu Zhang, Pei-Yuan Qian & Jian-Wen Qiu
The family Ampullariidae includes both aquatic and amphibious apple snails. They are an emerging model for evolutionary studies due to the high diversity, ancient history and wide geographical distribution. Insight into drivers of ampullariid evolution is hampered, however, by the lack of genomic resources. Here we report the genomes of four ampullariids spanning the Old World (Lanistes nyassanus) and New World (Pomacea canaliculata, Pomacea maculata and Marisa cornuarietis) clades. The ampullariid genomes have conserved ancient...

Data from: Sensitivity of global soil carbon stocks to combined nutrient enrichment

Thomas W. Crowther, Charlotte Riggs, Eric M. Lind, Elizabeth T. Borer, Eric W. Seabloom, Sarah E. Hobbie, E. R. Jasper Wubs, Peter B. Adler, Jennifer Firn, Laureano Gherardi, Nicole Hagenah, Kirsten S. Hofmockel, Johannes M. H. Knops, Rebecca L. McCulley, Andrew MacDougall, Pablo L. Peri, Suzanne M. Prober, Carly J. Stevens & Devin Routh
Soil stores approximately twice as much carbon as the atmosphere and fluctuations in the size of the soil carbon pool directly influence climate conditions. We used the Nutrient Network global change experiment to examine how anthropogenic nutrient enrichment might influence grassland soil carbon storage at a global scale. In isolation, enrichment of nitrogen and phosphorous had minimal impacts on soil carbon storage. However, when these nutrients were added in combination with potassium and micronutrients, soil...

Data from: Extended phenotypes and foraging restrictions: ant nest entrances and resource ingress in leaf-cutting ants

Lucía I. Rodríguez-Planes & Alejandro G. Farji-Brener.
Several factors may restrict the acquisition of food to below the levels predicted by the optimization theory. However, how the design of structures that animals build for foraging restrict the entry of food are less known. Using scaling relationships we determined whether the design of the entrances of leaf-cutting ant nests restricts resource input into the colony. We measured nests and foraging parameters in 25 nests of Atta cephalotes in a tropical rain forest. Ant...

Data from: Aerodynamic reconstruction of the primitive fossil bat Onychonycteris finneyi (Mammalia: Chiroptera)

Lucila I. Amador, Nancy B. Simmons & Norberto P. Giannini
Bats are the only mammals capable of powered flight. One of the oldest bats known from a complete skeleton is Onychonycteris finneyi from the Early Eocene (Green River Formation, Wyoming, 52.5 mya). Estimated to weigh ~40 g, Onychonycteris exhibits the most primitive combination of characters thus far known for bats. Here we reconstructed the aerofoil of the two known specimens, calculated basic aerodynamic variables, and compared them with those of extant bats and gliding mammals....

Data from: Natural hazards and wildlife health: the effects of a volcanic eruption on the Andean condor

Pablo Plaza, Guillermo Wiemeyer, Guillermo Blanco, Pablo Alarcón, Dámaso Hornero-Méndez, José Antonio Donázar, José Antonio Sánchez-Zapata, Fernando Hiraldo, Jesús De La Rosa & Sergio Agustín Lambertucci
Volcanic eruptions produce health changes in animals that may be associated with emitted gases and deposited ashes. We evaluated whether the Puyehue–Cordón Caulle volcanic eruption in 2011 produced health changes in the threatened Andean condor (Vultur gryphus) living in the area most affected by the eruption, north-western Patagonia. We studied clinical and biochemical parameters of condors examined before and after the eruption. We also examined concentrations of different metals and metalloids in the blood of...

Astroniumxylon, Schinopsixylon and Parametopioxylon n. gen. fossil woods from Upper Cenozoic of Argentina: Taxonomic revision, new taxon and new records

María Jimena Franco
This paper presents new descriptions of Anacardiaceae fossil woods from the Ituzaingó Formation (late Cenozoic) at the Toma Vieja, Curtiembre, and Arroyo El Espinillo localities, Argentina. We describe eight silicified woods assigned to four different species in three genera, one of which, Parametopioxylon crystalliferum n. gen. n. sp., is new. Similarities between these three genera and the six Anacardiaceae species previously recorded from the late Cenozoic in northeastern Argentina are investigated using multivariate analysis techniques...

Behavioural complementarity among frugivorous birds and lizards can promote plant diversity in island ecosystems

Teresa Morán López, Aarón González Castro, Juan Manuel Morales & Manuel Nogales Hidalgo
The behavioural complementarity of fruit-eating animals is thought to exert a key role in plant community assembly. However, a mechanistic understanding of the causal links between the two processes is still lacking. This study assesses if complementarity between dispersers in feeding and microhabitat-use behaviour enhances community-scale dispersal services, resulting in a more diverse community of seedlings. We used a Bayesian approach to connect a comprehensive database of seed dispersal effectiveness at a community scale with...

Intraspecific variation in body size of bumblebee workers influences anti-predator behavior

Sabrina Gavini, Carolina Quintero & Mariana Tadey
1.Flower dwelling predators make flowers dangerous foraging sites for pollinators, potentially affecting their anti-predator behavior. Moreover, predation vulnerability often varies among pollinators’ body-sizes with interspecific comparisons showing that smaller species are more vulnerable than larger ones. However, how intraspecific body size variation influences pollinator behavior under predation risk is still unknown, especially under natural conditions. 2.We hypothesized that bumblebee workers of different sizes will exhibit different foraging strategies under predation risk. We predict that (i)...

Registration Year

  • 2019
    15

Resource Types

  • Dataset
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Affiliations

  • National Scientific and Technical Research Council
    15
  • National University of La Plata
    2
  • American Museum of Natural History
    2
  • Bernardino Rivadavia Natural Sciences Museum
    1
  • Howard Hughes Medical Institute
    1
  • University of Buenos Aires
    1
  • University of Pretoria
    1
  • Utah State University
    1
  • The Hong Kong University of Science and Technology
    1
  • Central University of Ecuador
    1