DISSERTATION RESEARCH: Making the transition: Comparing avian biogeographic responses to climate change across biomes
论文研究:转型:比较不同生物群落鸟类生物地理对气候变化的反应
基本信息
- 批准号:1501757
- 负责人:
- 金额:$ 2.04万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-08-01 至 2017-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This project will examine the impact of warming climate on bird communities in the Mojave, Sonoran, and Great Basin Deserts. These deserts have different climates, vegetation, and animal communities, and all have experienced gradually warmer temperatures over the last fifty years. This study will make use of a unique resource: systematic counts of desert animals that occurred from 1904 to 1945, before the onset of current warming. These surveys provide an early view of desert ecosystem health prior to human-caused ecological changes. Re-surveys at 30 sites across the Great Basin and 69 sites across the Mojave will provide data on the current abundance of over 100 bird species. This study will evaluate whether species of the Sonoran and Mojave deserts, which continue to warm, are expanding into the Great Basin desert, which as warmed less, or whether the area between the two types of deserts acts as a barrier to expansion of species from one to the other. This study will also increase knowledge of how the geographic ranges of individual species respond to climate change by determining if species shift their ranges independently, resulting in a reshuffling of bird communities, or if species respond similarly, resulting in entire sets of species moving their ranges together.In a climate change hotspot (the desert southwest), using a unique historical resource (Grinnell-era surveys) that allows examination of colonization and extinction processes at a large spatial scale, this study will quantify how rapid 20th century warming and drying influence avian biogeographic distributions. Avian re-surveys at 30 sites in the Great Basin deserts originally visited prior to significant climate warming will complement re-surveys at 69 desert sites in the Mojave Desert, its southern transition with the Sonoran, and its northern transition with the Great Basin desert. This study examines how avian community structure varies over time and space across warm (Sonoran and Mojave) and cold (Great Basin) deserts, and how the transition zone between the deserts impacts the biogeographic response to climate change. Understanding distributional change at the Mojave-Great Basin transition zone will enable the evaluation of whether species of the warm deserts are expanding into the cold desert, or whether the transition zone is a barrier to northward expansion. Barriers to northward expansion for birds could result in range collapse if the southern limits of warm desert species are also contracting.
该项目将研究气候变暖对莫哈韦、索诺兰和大盆地沙漠鸟类群落的影响。这些沙漠有不同的气候、植被和动物群落,在过去的50年里,它们都经历了逐渐变暖的温度。这项研究将利用一种独特的资源:对1904年至1945年,也就是当前变暖开始之前发生的沙漠动物进行系统统计。这些调查提供了在人类造成的生态变化之前沙漠生态系统健康的早期观点。对大盆地的30个地点和莫哈韦地区的69个地点进行重新调查,将提供目前超过100种鸟类丰度的数据。这项研究将评估继续变暖的索诺兰和莫哈韦沙漠的物种是否正在向变暖较少的大盆地沙漠扩张,或者这两种类型的沙漠之间的区域是否成为物种从一个到另一个扩张的障碍。这项研究还将通过确定物种是否独立地改变它们的范围,导致鸟类群落的重新洗牌,或者如果物种的反应相似,导致整个物种的范围一起移动,来增加关于单个物种的地理范围如何响应气候变化的知识。在气候变化热点地区(西南沙漠),利用一种独特的历史资源(格林内尔时代的调查),可以在大空间尺度上检查殖民和灭绝过程,这项研究将量化20世纪快速变暖和干燥对鸟类生物地理分布的影响。对大盆地沙漠中最初在显著气候变暖之前访问过的30个地点进行的鸟类重新调查将补充对莫哈韦沙漠69个沙漠地点的重新调查,莫哈韦沙漠与索诺兰沙漠的南部过渡,以及大盆地沙漠的北部过渡。这项研究考察了温暖(索诺兰和莫哈韦)和寒冷(大盆地)沙漠上的鸟类群落结构如何随着时间和空间的变化而变化,以及沙漠之间的过渡带如何影响气候变化的生物地理响应。了解莫哈韦-大盆地过渡带的分布变化将有助于评估温暖沙漠的物种是否正在向寒冷沙漠扩张,或者过渡带是否是向北扩张的障碍。如果温暖沙漠物种的南部界限也在收缩,那么鸟类向北扩张的障碍可能会导致活动范围的崩溃。
项目成果
期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
专利数量(0)
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Steven Beissinger其他文献
Steven Beissinger的其他文献
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{{ truncateString('Steven Beissinger', 18)}}的其他基金
OPUS:CRS: Global Change and California Birds and Mammals Across Centuries - The Grinnell Resurvey Project
OPUS:CRS:几个世纪以来的全球变化与加州鸟类和哺乳动物 - 格林内尔再调查项目
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1911334 - 财政年份:2019
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$ 2.04万 - 项目类别:
Standard Grant
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- 批准号:
1601523 - 财政年份:2016
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Collaborative Research: Responses of Desert Endotherms to Rapid Recent Climate Change
合作研究:沙漠吸热植物对近期气候快速变化的反应
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1457742 - 财政年份:2015
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CNH: Wetlands in a Working Landscape: Links Among Landowner Decisions, Climate, Disease Ecology, and Metapopulation Dynamics
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1115069 - 财政年份:2011
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$ 2.04万 - 项目类别:
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Turnover Dynamics in Two Patch-Tracking Sympatric Rail Metapopulations: Validating Inferences from Occupancy Data
两个补丁跟踪同域铁路元群体中的周转动态:验证从占用数据得出的推论
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1051342 - 财政年份:2011
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Microbial Infection, Egg Viability, and the Onset of Incubation in Birds
鸟类的微生物感染、卵子活力和孵化开始
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0517549 - 财政年份:2005
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LTREB: Linking Individual and Spatial Variation to Demography and Population Dynamics of a Neotropical Parrotlet
LTREB:将个体和空间变异与新热带鹦鹉的人口统计和种群动态联系起来
- 批准号:
0113173 - 财政年份:2001
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$ 2.04万 - 项目类别:
Continuing Grant
"Does Egg Viability Constrain the Onset of Incubation in Birds? An Experimental Analysis using a Tropical Climate Gradient"
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- 批准号:
9904754 - 财政年份:2000
- 资助金额:
$ 2.04万 - 项目类别:
Continuing Grant
Function of Early Incubation: Tests of Social and Environmental Constraints
早期孵化的功能:社会和环境约束的测试
- 批准号:
9796155 - 财政年份:1997
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$ 2.04万 - 项目类别:
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CRB: Collaborative Research: Comparing Genetic and Demographic Models of Population Viability for a Neotropical Parrot
CRB:合作研究:比较新热带鹦鹉种群活力的遗传和人口统计模型
- 批准号:
9796112 - 财政年份:1996
- 资助金额:
$ 2.04万 - 项目类别:
Standard Grant
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