Resultados de búsqueda - "Holocene"

Genome sequences and population genomics reveal climatic adaptation and genomic divergence between two closely related sweetgum species por Xu, Wu-Qin, Ren, Chao-Qian, Zhang, Xin-Yi, Comes, Hans-Peter, Liu, Xin-Hong, Li, Yin-Gang, Kettle, Christopher J., Jalonen, Riina, Gaisberger, Hannes, Ma, Ya-Zhen, Qiu, Ying-Xiong

“…We inferred a scenario of allopatric species divergence during the late Miocene, followed by secondary contact during the Holocene. We identified multiple genomic islands of elevated divergence that mainly evolved through divergence hitchhiking and recombination rate variation, likely fostered by long-term refugial isolation and recent differential introgression in low-recombination genomic regions. …”
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Late Pleistocene molecular dating of past population fragmentation and demographic changes in African rain forest tree species supports the forest refuge hypothesis por Duminil, J., Mona, S., Mardulyn, P., Doumenge, C., Walmacq, F., Doucet, J.L., Hardy, Olivier J.

“…Species‐tree inferences show that the two species diverged c. 600 ka, whereas the divergence between E. suaveolens gene pools was dated to the late Pleistocene (first divergence c. 120 ka, second c. 60 ka).(1) Molecular dating of demographic changes of two African tropical forest tree species is consistent with the Pleistocene forest refuge hypothesis. (2) Tree species from Guinean evergreen tropical forests might have been less affected by past climate change than semi‐deciduous species. (3) Our phylogeographical data support a recent date (Holocene) of the last opening of the Dahomey Gap.…”
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Carbon accumulation of tropical peatlands over millennia: a modeling approach por Kurnianto, S., Warren, M., Talbot, J., Kauffman, J.B., Murdiyarso, Daniel, Frolking, S.

“…We present the first model of long‐term carbon accumulation in tropical peatlands by modifying the Holocene Peat Model (HPM), which has been successfully applied to northern temperate peatlands. …”
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Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions por Aguirre‐Morales, Carolina Adriana, Thomas, Evert, Cardozo, Carlos Ivan, Gutiérrez Artunduaga, Janneth Patricia, Alcázar Caicedo, Carolina, Moscoso Higuita, Luis Gonzalo, Becerra López Lavelle, Luis Augusto, González, Maylin Adriana

“…The current distribution and mixture of genetic groups across STDF fragments we observed might be the result of range expansion of SDTFs during the last glacial period followed by range contraction during the Holocene and human‐influenced movement of germplasm associated with cattle ranching. …”
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Reinvindication of pre-hispanic agricultural technologies for a future food crisis: A scientometric study of the high fields based on citespace and VOSviewer por Oscanoa Gamarra, Luis, Olivera Vilca, Socrates, Cuellar Condori, Nestor, Arroyo Paz, Antonio, Osso Arriz, Oscar, Leon Manrique, Brunilda, Farromeque Meza, María del Rosario, Dextre Mendoza, Rodolfo, Virú Vásquez, Paul, Rodriguez Flores, Ruben, Gabriel Gaspar, María, Bravo Toledo, Luigi

“…Influential journals in the field include Journal of Archaeological Science, The Holocene, and Vegetation History and Archaeobotany. …”
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A new soil-landscape approach to the genesis and distribution of typic and vertic Argiudolls in the Rolling Pampa of Argentina por Morras, Hector, Moretti, Lucas Martin

“…In a subsequent humid period in the Holocene, the illitic sediments were eroded and the smectitic sediments were exposed on the upper parts of the undulating relief. …”
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Järnets flora – en undersökning av vegetationsutvecklingen vid Röda Jorden por Abrahamsson, Gunnar, Abrahamsson, Jonathan

“…Under holocens varmare perioder, atlantisk och subboreal tid, är förekomsten av pollen från lövträd, exv. alm, ek och lind, högst. …”
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Vegetationsutveckling och mänsklig aktivitet under äldre Stenålder vid Döudden, Arjeplog kommun por Persson, Nina

“…The objective of this study was to analyse the history of the vegetation and if the vegetation showed traces of human activity during early Holocene, by pollen analysis. The results indicate that the area had an established vegetation c. 7600 – 8200 BC, consequently the ice must have left the area about 1000 years earlier than has previously been known. …”
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High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis por Arana, María Veronica, Gallo, Leonardo Ariel, Vendramin, Giovanni Giuseppe, Pastorino, Mario Juan, Sebastiani, Federico, Marchelli, Paula

“…In addition, several small steppe populations showed high genetic diversity and divergent gene pools, suggesting that they constitute ancient refuges from pre-Holocene glaciations with just a subgroup of them contributing significantly to post-glacial spread. …”
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Late quaternary paleosol records from sutropical (38°S) to tropical (16°S) South America and palaeoclimatic implications por Zech, Wolfgang, Zech, MIchael, Zech, Roland, Peinneman, Néstor, Morras, Hector, Moretti, Lucas Martin, Ogle, Neil, Fucks, M., Kalim, R.M., Schad, P., Glaser, B.

“…Whereas the seasonality during the Late Glacial seems to have been very pronounced, conditions for organic matter production and preservation became much more favourable at “Chasico” and “D4” during the Early Holocene. We suggest that extra-tropical winter precipitation played a more important role than before and than today. …”
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Atmospheric dust dynamics in southern South America: A 14-year modern dust record in the loessic Pampean region por Cosentino, Nicolas Juan, Gaiero, Diego Marcelo, Torre, Gabriela, Pasquini, Andrea Ines, Coppo, Renata, Arce, Juan Mateo, Velez, Georgina

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Pre-columbian mycobacterial genomes reveal seals as a source of new world human tuberculosis por Bos, Kirsten I., Harkins, Kelly M., Herbig, Alexander, Coscolla, Mireia, Weber, Nico, Comas, Iñaki, Forrest, Stephen A., Bryant, Josephine M., Harris, Simon R., Schuenemann, Verena J., Campbell, Tessa J., Majander, Kerrtu, Wilbur, Alicia K., Guichon, Ricardo A., Steadman, Dawnie L. Wolfe, Cook, Della Collins, Niemann, Stefan, Behr, Marcel A., Zumarraga, Martin Jose, Bastida, Ricardo, Huson, Daniel, Nieselt, Kay, Young, Douglas, Parkhill, Julian, Buikstra, Jane E., Gagneux, Sebastien, Stone, Anne C., Krause, Johannes

“…Two independent dating approaches suggest a most recent common ancestor for the M. tuberculosis complex less than 6,000 years ago, which supports a Holocene dispersal of the disease. Our results implicate sea mammals as having played a role in transmitting the disease to humans across the ocean.…”
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Genetic structure and diversity of the amphitropical disjunct grass Leptochloa crinita (formerly Trichloris crinita) and implications for restoration por Quiroga, Raul Emiliano, Mathiasen, Paula, Quiroga, M. Paula, Fernandez, Roberto J., Díaz, Dayana G., Premoli, Andrea Cecilia

“…Climatic niche models indicate few potential habitats for the species in North America during the Last Glacial Maximum and Middle Holocene, in contrast to South America, where potential habitats seemed to be comparable or more extensive than at present. …”
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Reflexiones y lecciones del trabajo en zonas PDET del Catatumbo: “Mejora de la sostenibilidad ambiental mediante implementación de tecnologías en el marco de la estrategia nacional... por Agudelo Castañeda, Genaro Andrés, Carreño Olejua, Ariel René, Rojas Molina, Jairo, Bolaños Benavides, Martha Marina, Montenegro, Andrea Constanza

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Estado del cultivo de cacao en la cordillera nariñense con énfasis en la concentración de cadmio por Meneses Buitrago, Diego Hernán, Lerma Lasso, José Libardo, Guerrero Díaz, Gissela Fernanda, Cortés Delgadillo, Diego Leonardo, Martínez Pachón, Eliana, Montenegro, Andrea Constanza

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Trazabilidad en el cacao de la cordillera nariñense: una propuesta de formación para implementar a la medida por Cañar Serna, Dubert Yamil, Tibaduiza Castañeda, Leidy Patricia, Sepúlveda Forero, José Luis, Meneses Buitrago, Diego Hernán, Cadena Pastrana, Álvaro Mauricio

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Variabilidad paleoclimática y cambios paleoambientales en la región Chaqueña semiárida Argentina por Speranza, Flavio Cesar

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