RIG: Consequences of realistic biodiversity changes for ecosystem functioning in an endemic-rich serpentine grassland

RIG：现实的生物多样性变化对当地特有丰富的蛇纹草原生态系统功能的影响

基本信息

批准号：
0719241
负责人：
Erika Zavaleta
金额：
$ 15万
依托单位：
University of California-Santa Cruz
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 2009-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0719241&HistoricalAwards=false
关键词：
RIG Consequences realistic biodiversity changes

项目摘要

A large body of research has emerged on how declining biodiversity affects the integrity of natural systems and their ability to provide for society. Much of this research has limited relevance to actual ecosystems and their conservation, however, because of experimental features that reduce realism. This project will bridge from experiment to application by examining the effects of realistic plant species losses thought to be driven by urban vehicular nitrogen deposition in California's unique serpentine grasslands. It will examine how species losses affect the resistance of this ecosystem to invasion by exotic species, its ability to support a diversity of animals, and its soil fertility and nutrient cycles.This project will be the first of its kind to directly compare the consequences of random and realistic biodiversity losses. In so doing, it will help managers apply lessons from hundreds of existing studies based on random losses to real ecosystems experiencing very non-random species declines. It will also directly support management of the many serpentine grassland reserves in California by clarifying whether and how vehicle nitrogen emissions are contributing to the decline of this ecosystem. Finally, it will support career development for at least four aspiring scientists, from a junior professor to a talented young undergraduate to urban high school students, from underrepresented backgrounds.

关于生物多样性下降如何影响自然系统的完整性及其社会供给能力的大量研究已经出现。然而，由于实验特征降低了现实性，大部分研究与实际生态系统及其保护的相关性有限。该项目将通过研究现实植物物种损失的影响，研究被认为是由加利福尼亚州独特的蛇纹草原上的城市车辆氮沉积引起的植物物种损失的影响，从而将实验与应用联系起来。它将研究物种损失如何影响该生态系统对外来物种入侵的抵抗力、其支持动物多样性的能力以及土壤肥力和养分循环。该项目将是第一个直接比较物种损失后果的项目。随机和现实的生物多样性丧失。这样做，它将帮助管理者将数百项基于随机损失的现有研究中的经验教训应用到经历非随机物种减少的真实生态系统中。它还将通过澄清车辆氮排放是否以及如何导致该生态系统的衰退，直接支持对加利福尼亚州许多蛇形草原保护区的管理。最后，它将支持至少四名有抱负的科学家的职业发展，从初级教授到才华横溢的年轻本科生，再到来自代表性不足的背景的城市高中生。