CAREER: A Size-Based Test of Species-Energy Theory in Stream Ecosystems - Linking Individuals, Communities, and Underrepresented Minorities

职业：河流生态系统中基于规模的物种能量理论测试 - 将个人、社区和代表性不足的少数群体联系起来

基本信息

批准号：
1553111
负责人：
Daniel McGarvey
金额：
$ 60.07万
依托单位：
Virginia Commonwealth University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-08-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1553111&HistoricalAwards=false
关键词：
CAREER Size Based Test Species

项目摘要

There is a well-established pattern of biodiversity on Earth, with highest biodiversity found in the tropics and a decrease in biodiversity with increasing latitude towards the poles. Ecologists have suggested that the reason for this pattern is that higher levels of food resources for life are found in the tropics. This project will perform a direct test of that hypothesis by making measurements of biodiversity and food resource levels in streams across a broad latitudinal gradient. In each of eight study regions, fishes and invertebrates will be intensively sampled. The data will be used by the researcher to develop mathematical models of the relationships between the average size of individuals and the abundance of those individuals within a community as a means of testing the idea about biodiversity and resources. This project will also focus on engaging underrepresented minorities in freshwater research. In each of four years, a group of three minority undergraduates will be trained to conduct stream surveys, to analyze original data, and to present results at the annual meeting of the Society for Freshwater Science, for a total of 12 undergraduates mentored throughout the project. One Ph.D. student identified as an underrepresented minority student also will be trained to compete for leadership-level positions in environmental research or management.An empirical test of species-energy theory within stream ecosystems will be conducted in three steps. In Step-1, size-spectra (scaling relationships between average individual body mass and population abundance) will be quantified in each of the eight study regions and used to model the distribution of abundance among primary, secondary, and tertiary consumers. Nitrogen stable isotope samples and published feeding behaviors will also be used to assess whether trophic position is a consistent function of body size. Systematic, among-site comparisons of size-spectra models will then test whether the scaling of abundance with individual body mass and trophic position is constant among tropical and temperate streams. In Step-2, species-abundance distributions will be compiled for each study stream then compared among streams to assess whether species richness increases more rapidly, relative to a constant number of individuals, in tropical streams. In Step-3, supplementary fish and invertebrate data from National Ecological Observatory Network streams will be used to test for seasonal or inter-annual differences in the size-spectra and species-abundance distribution models.

地球上有一个既定的生物多样性模式，热带地区的生物多样性最高，而随着向两极的纬度增加，生物多样性逐渐减少。生态学家认为，这种模式的原因是在热带地区发现了更高水平的生命食物资源。该项目将通过测量跨广泛纬度梯度的溪流中的生物多样性和食物资源水平来直接检验该假设。在八个研究区域中，将对鱼类和无脊椎动物进行集中采样。研究人员将使用这些数据来开发个体平均大小与社区内个体丰度之间关系的数学模型，作为测试生物多样性和资源想法的一种手段。该项目还将侧重于让代表性不足的少数群体参与淡水研究。每四年，将培训一组三名少数民族本科生进行水流调查、分析原始数据，并在淡水科学学会年会上展示结果，整个项目总共指导 12 名本科生。一名博士。被确定为代表性不足的少数族裔学生也将接受培训，以竞争环境研究或管理领域的领导职位。对溪流生态系统内的物种能量理论的实证检验将分三个步骤进行。在步骤 1 中，将量化八个研究区域中每个区域的体型谱（平均个体体重与种群丰度之间的比例关系），并用于模拟初级、二级和三级消费者之间丰度的分布。氮稳定同位素样本和已发表的摄食行为也将用于评估营养位置是否与体型一致。然后，对尺寸光谱模型进行系统性的站点间比较，将测试热带和温带溪流中丰度随个体体重和营养位置的变化是否恒定。在步骤 2 中，将为每个研究溪流编制物种丰富度分布，然后在溪流之间进行比较，以评估热带溪流中相对于恒定数量的个体，物种丰富度是否增加得更快。在第三步中，来自国家生态观测网络流的补充鱼类和无脊椎动物数据将用于测试尺寸光谱和物种丰度分布模型的季节性或年际差异。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Precipitation and temperature drive continental-scale patterns in stream invertebrate production

降水和温度驱动河流无脊椎动物生产的大陆规模模式

DOI：
10.1126/sciadv.aav2348
发表时间：
2019-04
期刊：
Science Advances
影响因子：
13.6
作者：
Patrick, C. J.;McGarvey, D. J.;Larson, J. H.;Cross, W. F.;Allen, D. C.;Benke, A. C.;Brey, T.;Huryn, A. D.;Jones, J.;Murphy, C. A.;et al
通讯作者：
et al

Modeling the size spectrum for macroinvertebrates and fishes in stream ecosystems

对溪流生态系统中大型无脊椎动物和鱼类的大小谱进行建模

DOI：
发表时间：
2019-01
期刊：
Journal of visualized experiments
影响因子：
0
作者：
McGarvey, Daniel J.;Woods, Taylor E.;Kirk, Andrew
通讯作者：
Kirk, Andrew

Individual‐level data reveal high prevalence of positive size‐trophic position relationships for vertebrates in temperate streams

个体水平的数据揭示了温带河流中脊椎动物的正大小与营养位置关系的普遍存在

DOI：
10.1111/fwb.13666
发表时间：
2020-12
期刊：
Freshwater Biology
影响因子：
2.7
作者：
McGarvey; Daniel J.
通讯作者：
Daniel J.

Do fishes enjoy the view? A MaxEnt assessment of fish habitat suitability within scenic rivers

鱼喜欢看风景吗？

DOI：
10.1016/j.biocon.2021.109357
发表时间：
2021-11
期刊：
Biological Conservation
影响因子：
5.9
作者：
McGarvey, Daniel J.;Brown, Alexander L.;Chen, Elsa B.;Viverette, Catherine B.;Tuley, Philip A.;Latham, Olivia C.;Gibbs, Phillip M.;Richins, Allyson E.;Deadwyler, Michelle C.;Lin, Baron;et al
通讯作者：
et al

Climate Change and Mountaintop-Removal Mining: A MaxEnt Assessment of the Potential Threat to West Virginian Fishes

气候变化和山顶采矿：MaxEnt 对西弗吉尼亚鱼类潜在威胁的评估