SGER: Effects of an extreme flood event on fish populations in Tabasco, Mexico

SGER：极端洪水事件对墨西哥塔巴斯科州鱼类种群的影响

• 批准号: 0813783
• 负责人: Ingo Schlupp
• 金额: --
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-02-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0813783&HistoricalAwards=false
• 关键词: SGER; Effects; extreme; flood; event

Extreme natural events, like major floods, are very rare and difficult to document because they are unpredictable. It is clear, however, that they must have profound effects on many facets of geology, flora and fauna. Large-scale floods are of obvious importance for aquatic ecosystems. The amount of water and the force with which it is flowing temporarily will physically destroy or displace many aquatic organisms. Only if one has relevant data from just before a flood and is able to collect comparative data right after a flood, can one take advantage of such a situation. This research builds on a long-term study of fish communities and population genetics of fishes from several sites in Tabasco, Mexico that have recently been impacted by the large flood that occurred in the region in November 2007. The extensive data from before the flood provides an unparalleled opportunity to examine the impacts on fish communities and population abundance and genetic structure using modern morphological and molecular genetic techniques. This study will investigate the consequences of the flood on species richness and population abundance of fish at several previously sampled sites and examine population genetic consequences for Poecilia mexicana.This research will contribute to our understanding of how large-scale weather events impact communities and populations. The frequency of such weather events are predicted to increase with global change. In addition, this study will provide international research experiences for undergraduate students and will foster international collaboration with Mexican scientists.

极端自然事件（如大洪水）非常罕见，很难记录，因为它们是不可预测的。但是，很明显，它们必须对地质，动植物的许多方面产生深远的影响。对于水生生态系统而言，大规模洪水显而易见。水的量及其暂时流动的力将在物理上破坏或取代许多水生生物。只有当一个人从洪水前有相关数据并能够在洪水后立即收集比较数据，才能利用这种情况。这项研究基于对墨西哥塔巴斯科州几个地点的鱼类社区和人群遗传学的长期研究，最近受到了2007年11月在该地区发生的大洪水的影响。洪水前的广泛数据提供了一个无与伦比的机会，可以使用现代化的物质和生物属性技术来检查对鱼类社区和种群丰富和遗传学的影响。 这项研究将调查洪水对以前采样场所的物种丰富性和人群丰度的后果，并检查对墨西哥Poecilia的种群遗传后果。这项研究将有助于我们对大规模天气事件影响社区和人口的理解有助于我们的理解。 预计此类天气事件的频率随着全球变化而增加。 此外，这项研究将为本科生提供国际研究经验，并将促进与墨西哥科学家的国际合作。