U.S.-Argentina Planning VIsit: Stream Responses to Bioclimatic Change in Grasslands of the Americas

03028912该奖项将支持爱荷华大学的E.Arthur Bettis博士进行一次计划访问，与马德普拉塔国立大学的A.Prieto博士会面，收集数据并敲定国际合作计划，研究南北美洲温带草原生物气候变化的景观响应。这项研究的目的是整合阿根廷潘帕斯草原现有的地层和孢粉数据，并收集新的植物-大型化石和稳定同位素数据，以发展全新世环境变化的详细历史和水系对这种变化的响应。长期目标是利用阿根廷潘帕斯和北美中大陆山谷沉积物中保存的过去环境的记录，调查温带草原水系对过去生物气候变化的反应。了解气候变化对植被和这些地区河流行为的影响，对于维护和保护国家和国际上重要的土壤资源、农业生产系统和基础设施至关重要。这些对草原所在国家的长期经济和社会福祉至关重要。

03028912BettisThis U.S.-Argentina award will support Dr. E. Arthur Bettis of the University of Iowa, for a planning visit to meet with Dr. A. Prieto, Laboratorio de Paleoecologia y Palinologia, Universidad Nacional de Mar del Plata, to collect data and finalize plans for an international collaboration on the study of landscape response to bioclimatic change in temperate grasslands of North and South America. The object of this research is to integrate the Argentine Pampas' existing stratigraphic and palynological data and to collect new plant-macrofossil and stable isotope data to develop a detailed history of Holocene environmental change and the response of stream systems to that change. The long-term goal is to use the record of past environments preserved in valley sediments of the Argentine Pampas and the North American Midcontinent to investigate the response of stream systems in temperate grasslands to past bioclimatic change. Understanding the consequences of climate change on vegetation and on the behavior of streams in these areas is essential for maintaining and protecting nationally and internationally significant soil resources, agricultural production systems, and infrastructure. These are critical to the long-term economic and social well-being of countries in which grasslands are located.