U.S.-Vietnam Planning Visit: Collaborative Research on Nutrient Cycling and Productivity in the South China Sea

美越计划访问：南海养分循环和生产力合作研究

• 批准号: 0746714
• 负责人: Joseph Montoya
• 金额: --
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0746714&HistoricalAwards=false
• 关键词: U.S.; Vietnam; Planning; Visit; Collaborative

OISE-0746714 (Montoya, Georgia Institute of Technology)U.S.-Vietnam Planning Visit: Collaborative Research on Nutrient Cycling and Productivity in the South China SeaABSTRACTThis award supports a planning visit to enable Professor Joseph Montoya in the Biology Department at the Georgia Institute of Technology to meet with Dr. Nguyen Ngoc Lam at the Institute of Oceanography in Nha Trang and Professor La Thi Cang, Head of the Department of Oceanology, Meteorology, and Hydrology at the Vietnam National University in Ho Chi Minh City. Their goal is to establish a collaborative project to study the distribution, activity, and diversity of N2 fixing organisms (diazotrophs) in the South China Sea. Nitrogen is an essential plant nutrient and plays a critical role in limiting primary production in many marine ecosystems. The most abundant form of nitrogen present in seawater is N2, which can be used as a substrate for growth only by N2 fixing organisms (diazotrophs). Recently biological and biogeochemical studies have demonstrated that N2 fixation is a quantitatively important, and at times the dominant, source of new N supporting biological production in diverse tropical and subtropical waters. Nevertheless, the diversity of diazotrophic organisms, their rates of activity, and the factors controlling N2 fixation all remain poorly understood. The South China Sea is an economically important water body, containing important but severely stressed fisheries as well as significant mineral resources. The Sea is small enough that anthropogenic changes in land and water use can propagate through the river system and have an impact on oceanic properties on short time scales. A focused, collaborative field study will make an important contribution to our understanding of nutrient dynamics and ecosystem response to terrigenous forcings in this important marginal sea, and will provide an important benchmark for evaluating future changes in nutrient cycling in response to land use changes. There is sufficient overlap of interests between researchers at Georgia Tech and the Vietnamese Institutions to indicate that they can successfully pursue the activities proposed, and that the interaction will benefit both sides. The visit will also provide support for a postdoc, a graduate student and an undergraduate student. This global research experience will likely provide them many opportunities for continuing contacts with their Vietnamese colleagues throughout their research careers.

OISE-0746714（蒙托亚，格鲁吉亚理工学院）美国-越南规划访问：南海营养循环和生产力的合作研究摘要该奖项支持计划访问，使格鲁吉亚理工学院生物系的Joseph Montoya教授能够与芽庄海洋研究所的Nguyen Ngoc Lam博士和胡志明市越南国立大学海洋学、气象学和水文学系主任La Thi Cang教授会面。他们的目标是建立一个合作项目，研究中国南海固氮生物（固氮生物）的分布，活动和多样性。 氮是一种重要的植物营养素，在限制许多海洋生态系统的初级生产方面起着关键作用。 海水中最丰富的氮是N2，只有固氮生物（固氮生物）才能将其用作生长基质。 最近的生物和地球化学研究表明，N2固定是一个重要的数量，有时占主导地位，新的N支持生物生产在不同的热带和亚热带沃茨的来源。 然而，固氮生物的多样性，他们的活动率，以及控制N2固定的因素仍然知之甚少。 南中国海是一个具有重要经济意义的水体，拥有重要但严重紧张的渔业以及重要的矿产资源。 海洋很小，土地和水利用方面的人为变化可以通过河流系统传播，并在短时间内对海洋特性产生影响。 一个有重点的，合作的实地研究将作出重要贡献，我们的营养动态和生态系统对陆源强迫在这个重要的边缘海的理解，并将提供一个重要的基准，以评估未来的变化，营养循环，以应对土地利用的变化。 格鲁吉亚理工学院和越南研究机构的研究人员之间有足够的利益重叠，表明他们可以成功地开展拟议的活动，这种互动将使双方受益。 这次访问还将为一名博士后、一名研究生和一名本科生提供支持。 这种全球研究经验可能会为他们提供许多机会，在他们的研究生涯中与越南同事继续接触。