Libro de Resúmenes RCAPASalta (original) (raw)
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Libro de Resumenes RCAPA 2013 1
Las angiospermas son un grupo de evolución tardía que dominan los ambientes terrestres desde el Cretácico Superior, marcando un cambio en los biomas mesozoicos hacia una mayor afinidad con los actuales. En América del Sur, la separación en el norte con un área tropical árida y su conexión sur con la Península Antártica, imprimen caracteres particulares para las etapas iniciales de evolución y radiación. En particular, el registro fósil de angiospermas en Patagonia muestra un cambio de orden mayor en el Albiano-Cenomaniano que en límite K/P. Similarmente, un cambio de alto orden ocurre en el Eoceno Medio, al pasar de floras de climas cálido-húmedo a templado-frío. Durante el Paleógeno son evidentes las conexiones con Australasia que debieron ocurrir vía Antártida. Durante todo este tiempo, el gran desarrollo y diversidad alcanzada por las angiospermas muestra claras diferencias con el registro fósil del Hemisferio Norte. Es posible que los taxones gondwánicos arbóreos siempre-verdes dominantes durante esa época (Podocarpaceas y Araucariaceas) permitieran la coexistencia con la gran diversidad de angiospermas hallada, tal cual generan hoy en día con bosques abiertos y sin rápida recolonización, permitiendo a su vez una mejor regulación durante los cambios en los ecosistemas pasados. En contraposición, los taxones dominantes en el Hemisferio Norte para esa época, habrían sido de características mucho más competitivas (angiospermas deciduas; Pinaceae y Cupressaceae en altas latitudes). Para el Eoceno Superior se extendieron bosques templados de Nothofagaceae con características disímiles, que sufren una regresión posterior con el alzamiento de los Andes en el Mioceno Tardío, generando un nuevo gran cambio en los ecosistemas.
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PAMinSA VI Libro de resúmenes - Book of abstracts
The VI Paleopathology Association Meeting in South America brings us back to Argentina, this time in Buenos Aires, hoping to keep alive the spirit of friendship and warmness that is a characteristic of the PAMinSAs. This new meeting completes the fi rst 10 years of meetings, mostly initiated from the creativity of Sheila Mendonça de Souza, who planned the fi rst PAMinSA during the European Meeting of the Paleopathology Association of 2001 in Coimbra (Portugal). Just two years later she initiated what, until now, have been great events for colleagues from South America. Since then, our journey took us through beautiful countries, where we were greeted by groups of researchers with enormous effort and great enthusiasm, which always resulted in successful organizations and allowed a fruitful exchange of knowledge. Previous meetings have strengthened and encouraged the development of paleopathological jobs in local and regional scales. This fi rst tenth anniversary gives us the opportunity to deliberate on the results achieved and to propose new goals. Argentina for the second time is the host of this space for learning and dialogue, which is constructed by academic ties and friendship between colleagues from different generations who understand and assume a commitment of continuity. The PAMinSAs are areas of discussion among researchers in the paleopathological subject and it is a pleasure to have the opportunity to invite our house specialists from around the world as a way to actualize and to bring our work to the attention of other researchers. In addition, it is the opportunity for future generations to come and to participate in an international scenario that collaborates to guide and encourage vocations and new lines of work. Under the slogan 10 years of PAMinSA. Updates and perspectives in South American Paleopathology, four central themes articulate this meeting: interdisciplinary studies and current information on paleopathology (Symposium 1); advances, limitations and problems of molecular, chemical and imaging in the study of diseases of the past (Symposium 2) analysis of diseases in the context of socioeconomic and environmental changes (Symposium 3) and a roundtable with the aim of discussing the 10 years of these meetings in South America. Moreover, two conferences, two open sessions, a poster session and a post-meeting course were organized. This book brings together a wide range of subjects (33 posters and 58 oral presentations, totaling 91 exhibitions) including analysis of archaeological samples of dental and human skeletal remains pathologies, molecular studies, indicators of violence, forensic anthropology, paleoparasitology, radiographic and tomographic analyses, historical-ethnographic sources surveys and assessments of contemporary human skeletal collections. The PAMinSA VI will be attended by colleagues from different parts of South America and around the world. We therefore hope that this meeting reaches far beyond the objectives and additionally provide an appropriate framework for dialogue among colleagues and exchange of knowledge. We hope to share our research offering a warm working atmosphere and fellowship. We only have words of gratitude to all those who accompanied this project and gave their support, time and commitment. Many people and institutions made it possible to organize an event of this nature. First we want to thank the Local Organizing Committee, who collaborated on multiple activities, recruitment and logistics; the Group of regional partners for the effort to process endorsements of their institutions and the distribution of each announcement on their local areas; and all the members of the Scientifi c Committee for their contributions to the evaluation of abstracts.