LTREB: Response of a reservoir ecosystem to changing subsidies of nutrients and detritus

LTREB:水库生态系统对养分和碎屑补贴变化的响应

基本信息

  • 批准号:
    1930655
  • 负责人:
  • 金额:
    $ 63.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2019
  • 资助国家:
    美国
  • 起止时间:
    2019-09-01 至 2025-08-31
  • 项目状态:
    未结题

项目摘要

This award in long-term research in environmental biology examines how long-term changes in agriculture affect streams and lakes, using an Ohio landscape as a model system. In the 1990s, this landscape experienced a pronounced increase in conservation tillage (reduced- and no-till farming), which strongly affected nutrients and sediments in streams that feed downstream Acton Lake. Also, the abundance of bottom-feeding fish in the lake increased. These fish consume sediments and excrete nutrients into the water, providing another source of nutrients to algae. In the lake, the amount of algae is controlled mostly by concentrations of sediment in the water (which block light that algae need) and the abundance of bottom-feeding fish; this project explores long-term changes in these interactions. This research is important because similar agricultural changes are occurring throughout the US, but little is known about long-term effects on streams and lakes. The investigators will mentor several undergraduate and graduate students who will conduct research projects, and offer summer workshops for high school students, targeting students from underrepresented groups. This project tests hypotheses about the long-term dynamics and consequences of ecosystem subsidies. Over the past 25 years, watershed subsidies of nitrogen, phosphorus, and detritus (sediments) to Acton Lake have changed because of an increase in conservation tillage. Furthermore, nutrient subsidies from detritivorous fish (gizzard shad), which translocate nitrogen and phosphorus from sediments to water, have varied temporally. Over the 10-12 years, stream phosphorus and sediment concentrations declined, and Acton Lake phytoplankton increased because light limitation was alleviated by decreased suspended sediments and because of increased biomass (hence nutrient excretion) of gizzard shad. However, more recently stream soluble reactive phosphorus (SRP) concentrations increased, nitrate concentrations declined, and lake phytoplankton biomass stabilized. Furthermore, phytoplankton became increasingly limited by nitrogen relative to phosphorus, coinciding with declining nitrate and increasing SRP in streams, and with greater biomass of gizzard shad, which excrete at low nitrogen:phosphorus ratio. This long-term research in environmental biology award tests the following hypotheses: 1) in streams, SRP will continue to increase while nitrate continues to decline; 2) gizzard shad excretion rates will remain consistently high; 3) phytoplankton will become increasingly nitrogen-limited; and 4) phytoplankton biomass will be stable, or decline as nitrogen becomes more limiting. In addition, it is hypothesized that long-term environmental change and short-term weather variation will modulate watershed subsidies, and thus lake ecosystem dynamics. These hypotheses will be tested using a variety of statistical and modeling analyses on long-term data.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
这个环境生物学长期研究奖以俄亥俄州景观为模型系统,考察农业的长期变化如何影响河流和湖泊。在20世纪90年代,这一景观经历了保护性耕作(减少和免耕农业)的显着增加,这强烈影响了流入下游阿克顿湖的河流中的营养物质和沉积物。此外,湖中底栖鱼类的数量也有所增加。这些鱼消耗沉积物并将营养物质排泄到水中,为藻类提供另一种营养来源。在湖中,藻类的数量主要由水中沉积物的浓度(阻挡藻类所需的光线)和大量的底栖鱼类控制;该项目探讨了这些相互作用的长期变化。这项研究很重要,因为类似的农业变化正在美国各地发生,但对河流和湖泊的长期影响知之甚少。调查人员将指导几名本科生和研究生,他们将进行研究项目,并为高中生提供暑期讲习班,目标是来自代表性不足群体的学生。该项目检验关于生态系统补贴的长期动态和后果的假设。在过去的25年里,氮,磷和碎屑(沉积物)阿克顿湖流域补贴已经改变,因为保护性耕作的增加。此外,营养补贴从反食鱼(gizzard shad),氮和磷从沉积物中转移到水中,随时间而变化。在10-12年,流磷和沉积物浓度下降,阿克顿湖浮游植物增加,因为光限制减轻了减少悬浮沉积物,因为增加生物量(因此营养排泄)的砂囊鲱鱼。然而,最近流可溶性活性磷(SRP)浓度增加,硝酸盐浓度下降,湖泊浮游植物生物量稳定。此外,浮游植物变得越来越有限的氮相对于磷,与硝酸盐下降和增加SRP流,并与更大的生物量的砂囊鲱鱼,在低氮:磷比排泄。这项环境生物学奖的长期研究测试了以下假设:1)在溪流中,SRP将继续增加,而硝酸盐将继续下降; 2)砂囊的排泄率将保持一贯的高水平; 3)浮游植物将变得越来越受氮限制; 4)浮游植物生物量将保持稳定,或随着氮的限制而下降。此外,据推测,长期的环境变化和短期的天气变化将调节流域补贴,从而湖泊生态系统动态。这些假设将通过对长期数据的各种统计和建模分析进行测试。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

期刊论文数量(15)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Estimating pelagic primary production in lakes: Comparison of 14C incubation and free‐water O2 approaches
估算湖泊中上层初级生产力:14C 孵化法和自由水 O2 方法的比较
  • DOI:
    10.1002/lom3.10471
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Lottig, Noah R.;Phillips, Joseph S.;Batt, Ryan D.;Scordo, Facundo;Williamson, Tanner J.;Carpenter, Stephen R.;Chandra, Sudeep;Hanson, Paul C.;Solomon, Chistopher T.;Vanni, Michael J.
  • 通讯作者:
    Vanni, Michael J.
Spatial and Temporal Variability of Nutrient Dynamics and Ecosystem Metabolism in a Hyper-eutrophic Reservoir Differ Between a Wet and Dry Year
富营养化水库养分动态和生态系统代谢的时空变化在丰水年和旱年之间存在差异
  • DOI:
    10.1007/s10021-020-00505-8
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Williamson, Tanner J.;Vanni, Michael J.;Renwick, William H.
  • 通讯作者:
    Renwick, William H.
Teaching Nutrient Cycling and Climate Change Concepts Using Excretion Experiments with Common Fish
利用常见鱼类的排泄实验教授营养循环和气候变化概念
  • DOI:
    10.1525/abt.2023.85.9.500
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Sharitt, Carrie Ann;Vanni, Michael J.
  • 通讯作者:
    Vanni, Michael J.
Temporal patterns in sediment, carbon, and nutrient burial in ponds associated with changing agricultural tillage
与农业耕作变化相关的池塘沉积物、碳和养分埋藏的时间模式
  • DOI:
    10.1007/s10533-022-00916-w
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Rogers, Martina N.;Williamson, Tanner J.;Knoll, Lesley B.;Vanni, Michael J.
  • 通讯作者:
    Vanni, Michael J.
Trophic Transfer Efficiency in Lakes
  • DOI:
    10.1007/s10021-022-00776-3
  • 发表时间:
    2022-07-05
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Mehner, Thomas;Attermeyer, Katrin;Gaedke, Ursula
  • 通讯作者:
    Gaedke, Ursula
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Michael Vanni其他文献

Synthesis and Biological Evaluation of 2′‐Oxo‐2,3‐dihydro‐3′H‐ spiro[chromene‐4,5′‐[1,3]oxazolidin]‐3′yl]acetic Acid Derivatives as Aldose Reductase Inhibitors
醛糖还原酶抑制剂 2′-Oxo-2,3-二氢-3′H-螺[色烯-4,5′-[1,3]恶唑烷]-3′基]乙酸衍生物的合成及生物学评价
  • DOI:
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    5.1
  • 作者:
    S. Rapposelli;F. Da Settimo;M. Digiacomo;C. La Motta;A. Lapucci;S. Sartini;Michael Vanni
  • 通讯作者:
    Michael Vanni

Michael Vanni的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Michael Vanni', 18)}}的其他基金

LTREB Renewal: Response of a reservoir ecosystem to declining subsidies of nutrients and detritus
LTREB 更新:水库生态系统对养分和碎屑补贴减少的响应
  • 批准号:
    1255159
  • 财政年份:
    2013
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant
DISSERTATION RESEARCH: Causes and consequences of cyanobacteria dominance and toxin production: Interactions among nutrient supply, nutrient ratios and light intensity
论文研究:蓝藻优势和毒素产生的原因和后果:营养供应、营养比例和光强度之间的相互作用
  • 批准号:
    1110536
  • 财政年份:
    2011
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Standard Grant
OPUS: Nutrient cycling by animals in freshwater ecosystems
OPUS:淡水生态系统中动物的养分循环
  • 批准号:
    0918993
  • 财政年份:
    2010
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Standard Grant
LTREB: Response of a Reservoir Ecosystem to Declining Subsidies of Nutrients and Detritus
LTREB:水库生态系统对养分和碎屑补贴减少的反应
  • 批准号:
    0743192
  • 财政年份:
    2008
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant
LTREB: Response of a Reservoir Ecosystem to Declining Subsidies of Nutrients and Detritus
LTREB:水库生态系统对养分和碎屑补贴减少的反应
  • 批准号:
    0235755
  • 财政年份:
    2003
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Standard Grant
Omnivorous Fish and the Stability of Aquatic Food Webs
杂食性鱼类与水生食物网的稳定性
  • 批准号:
    9982124
  • 财政年份:
    2000
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Standard Grant
Collaborative Research: Impacts of a Strong Interactor Along a Productivity Gradient: Linking Watersheds with Reservoir Food Webs
合作研究:强相互作用力对生产力梯度的影响:将流域与水库食物网联系起来
  • 批准号:
    9726877
  • 财政年份:
    1998
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant
Collaborative Research: Ecological Engineering by Fishes: The Importance of Biodiversity to Resource Heterogeneity and the Structure of Neotropical Streams
合作研究:鱼类生态工程:生物多样性对资源异质性和新热带溪流结构的重要性
  • 批准号:
    9615620
  • 财政年份:
    1997
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant
Interhabitat Transport of Nutrients by Detritivorous Fish: Impacts on Phytoplankton Communities
食性鱼类营养物质的生境运输:对浮游植物群落的影响
  • 批准号:
    9318452
  • 财政年份:
    1994
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant
LTER: Experimental Isolation of Direct and Indirect Mechanisms in the Trophic Cascade from Fish to Phytoplankton
LTER:从鱼类到浮游植物的营养级联中直接和间接机制的实验分离
  • 批准号:
    8916143
  • 财政年份:
    1990
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant

相似国自然基金

生长素响应因子(Auxin Response Factors)在拟南芥雄配子发育中的功能研究
  • 批准号:
    31970520
  • 批准年份:
    2019
  • 资助金额:
    58.0 万元
  • 项目类别:
    面上项目
新型GhDRP1(Drought Response Protein1) 调控棉花应答干旱的分子网络解析及育种利用评价
  • 批准号:
    31871668
  • 批准年份:
    2018
  • 资助金额:
    60.0 万元
  • 项目类别:
    面上项目
秀丽隐杆线虫ASI神经元off-response的环路与分子机制
  • 批准号:
    31600856
  • 批准年份:
    2016
  • 资助金额:
    22.0 万元
  • 项目类别:
    青年科学基金项目

相似海外基金

Siglecs in the Porcine Oviduct: Roles in the Sperm Reservoir and Sperm Immune Response
猪输卵管中的 Siglecs:在精子库和精子免疫反应中的作用
  • 批准号:
    10607761
  • 财政年份:
    2023
  • 资助金额:
    $ 63.5万
  • 项目类别:
The HIV Latent Reservoir, Suboptimal Immune Response on Antiretroviral Therapy, and Exogenous Cytokine Therapies
HIV 潜伏库、抗逆转录病毒治疗的次优免疫反应和外源细胞因子治疗
  • 批准号:
    10531134
  • 财政年份:
    2018
  • 资助金额:
    $ 63.5万
  • 项目类别:
The HIV Latent Reservoir, Suboptimal Immune Response on Antiretroviral Therapy, and Exogenous Cytokine Therapies
HIV 潜伏库、抗逆转录病毒治疗的次优免疫反应和外源细胞因子治疗
  • 批准号:
    10063845
  • 财政年份:
    2018
  • 资助金额:
    $ 63.5万
  • 项目类别:
The HIV Latent Reservoir, Suboptimal Immune Response on Antiretroviral Therapy, and Exogenous Cytokine Therapies
HIV 潜伏库、抗逆转录病毒治疗的次优免疫反应和外源细胞因子治疗
  • 批准号:
    10303021
  • 财政年份:
    2018
  • 资助金额:
    $ 63.5万
  • 项目类别:
Effects of the neural and inflammatory response to stress on cerebrovascular risk in HIV infection
应激后的神经和炎症反应对 HIV 感染脑血管风险的影响
  • 批准号:
    10224349
  • 财政年份:
    2017
  • 资助金额:
    $ 63.5万
  • 项目类别:
Effects of the neural and inflammatory response to stress on cerebrovascular risk in HIV infection
应激后的神经和炎症反应对 HIV 感染脑血管风险的影响
  • 批准号:
    9750845
  • 财政年份:
    2017
  • 资助金额:
    $ 63.5万
  • 项目类别:
LTREB Renewal: Response of a reservoir ecosystem to declining subsidies of nutrients and detritus
LTREB 更新:水库生态系统对养分和碎屑补贴减少的响应
  • 批准号:
    1255159
  • 财政年份:
    2013
  • 资助金额:
    $ 63.5万
  • 项目类别:
    Continuing Grant
Central memory CD4 T cell infection: key role in ART response and HIV persistence
中央记忆 CD4 T 细胞感染:ART 反应和 HIV 持续存在的关键作用
  • 批准号:
    9124732
  • 财政年份:
    2013
  • 资助金额:
    $ 63.5万
  • 项目类别:
Central memory CD4 T cell infection: key role in ART response and HIV persistence
中央记忆 CD4 T 细胞感染:ART 反应和 HIV 持续存在的关键作用
  • 批准号:
    9330766
  • 财政年份:
    2013
  • 资助金额:
    $ 63.5万
  • 项目类别:
The Role of the Immune Response in Controlling the Size of the HIV Reservoir.
免疫反应在控制艾滋病病毒库大小中的作用。
  • 批准号:
    8333947
  • 财政年份:
    2011
  • 资助金额:
    $ 63.5万
  • 项目类别:
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了