IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
SMALL MAMMALS DIVERSITY OF SOUTHERN SOUTH AMERICA AND WESTERN EUROPE DURING THE CLIMATIC EVENTS OF THE HOLOCENE (~8200 AND 4200 YEARS BP)
Autor/es:
MONTALVO, C.I.; CERDEÑO, E; FERNÁNDEZ, F.J.; FAGOAGA, A.; PRADO, J.L.; ALBERDI, M.T.; FERNÁNDEZ JALVO, Y.; GARCÍA-MORATO, S.; MARIN-MONFORT, M.D.; TOMASSINI, R.L.; ANDREWS, P.
Lugar:
La PLata
Reunión:
Jornada; Reunión de Comunicaciones de la APA 2019; 2019
Institución organizadora:
APA
Resumen:
TheHolocene is considered a period of relative climatic stability althoughevidence for pervasive millennial-scale cycles has been detected. Two putativetimes of climate change in the Holocene date to 8.2 and 4.2 ka, and we havegathered evidence for them as they mark the boundary of Early-Middle andMiddle-Late Holocene, respectively. So far, they have been better studied in NorthernHemisphere sites than in Southern, based on botanic, sedimentological andisotopic data. We have investigated micromammals (< 5kg), for they havespecific ecological requirements and are good palaeoecological indicators. The following sites have been selected (considering taxonomic representation, chronology andtaphonomy): Cabeza de Buey, Arroyo Seco, Paso Otero 4, Epullán Grande, Cueva TrafulI, Arroyo Malo 3, Cueva Salamanca, Cueva de Luna and Gruta del Indio(Argentina), and Valdavara-1, Atapuerca, Santimamiñe, El Mirón, Cova Colomera,Cova 120 and Cova del Frare (Spain). We present preliminary results of a study of flow energy, β-diversity and TaxonomicHabitat Index (THI) at community levels. Results do not show major changes at either8.2 or 4.2 ka at any of these sites, although diversity values show greaterdifferences in past communities than in recent ones. In spite of some minorchanges, the absence of a greater influence of these events may be explained byecosystems resilience or a low incidence in the study areas, without affectingthe Thermo Neutral Zone (TNZ) of small mammals. However, the application ofBioclimatic model seems to reflect a slight reduction of temperatures for bothstudy areas.