Collaborative Research: Understanding the Scaling of N Cycle Controls Throughout a River Network

合作研究：理解整个河流网络N循环控制的尺度主要研究者：查尔斯·沃罗斯马蒂（新罕布什尔大学，达勒姆新罕布什尔州）共同研究者：威尔·沃尔海姆（新罕布什尔大学，达勒姆）布鲁斯·彼得森（海洋生物实验室，伍兹霍尔MA）查尔斯·霍普金森（海洋生物实验室，伍兹霍尔MA）迈克尔·古塞夫（科罗拉多矿业学院，戈登CO .）在该国的郊区，人类正在迅速改变高地地表水和地下水的特征。在无数的流域，发展极大地增加了河流污染，这些污染最终会转移到沿海地区，造成低氧死区和有害藻华等负面影响。人们对这些变化的本质知之甚少。这项研究的目的是更好地了解一种重要营养物质氮的来源和命运。这项工作计划在波士顿北部的伊普斯维奇河进行实地过程研究和计算机建模。由于拟议的工作侧重于破译控制沿海流域营养物质来源和命运的基本过程，结果将有助于了解美国东北部其他地区河流系统的脆弱性。该项目将有助于解决有关土地利用变化的位置和类型如何影响污染物进入敏感的沿海生态系统的问题，从而有助于改善现有的环境管理策略。该项目还包括一个本科和研究生教育部分，以培养下一代科学家和实践者。一项外展计划旨在更好地向公民通报当地流域正在发生的变化。

Collaborative Research: Understanding the Scaling of N Cycle Controls Throughout a River Network Principal Investigator: Charles Vorosmarty (University of New Hampshire, Durham NH)Co-Investigators: Wil Wollheim (University of New Hampshire, Durham NH) Bruce Peterson (Marine Biological Laboratory, Woods Hole MA) Charles Hopkinson (Marine Biological Laboratory, Woods Hole MA) Michael Gooseff (Colorado School of Mines, Golden CO)In suburbanizing regions of the country, humans are rapidly changing the character of upland surface and ground waters. In countless watersheds, development has greatly increased riverborne pollution that ultimately passes to the coastal zone with negative impacts such as low oxygen dead zones and harmful algal blooms. The nature of these changes is poorly understood. The goal of the study is to better understand the sources and fates of one important nutrient, nitrogen. The effort is planned around field process studies and computer modeling in the Ipswich River, north of Boston. Because the proposed work focuses on deciphering the fundamental processes that govern sources and fates of nutrients in coastal watersheds, results will help to understand the vulnerability of river systems in other parts of the Northeastern U.S.A. The project will help address questions about how the location and types of land use change affect pollutant transport into sensitive coastal ecosystems and will thus help to improve existing environmental management strategies. The project also includes an undergraduate and graduate educational component to train the next generation of scientists and practitioners. An outreach program is designed to better inform citizens about the changes unfolding across their local watersheds.