Land-use effects on longevity and stem anatomical traits of perennial dicotyledonous species in grasslands

土地利用对草原多年生双子叶植物寿命和茎解剖特征的影响

基本信息

项目摘要

Life span is a key demographic trait important for the life history of plant species, the persistence and stability of plant populations and plant species` responses to environmental changes. Information on the longevity of plant individuals (or ramets) and specifically its variation dependent on land use and geographic regions is not available for a large number of common grassland species. Moreover, stem anatomical traits related to functions such as transport, storage and mechanical support are largely ignored in ecological studies of herbaceous species and therefore it is not known how sensitively these traits respond to variation in environmental conditions. This project has the major aim to address this lack of knowledge by using growth rings to study the longevity of plant individuals (or ramets) and by measuring stem anatomical characteristics for a large number of perennial dicotyledonous herb species in the grasslands of the Biodiversity Exploratories. The following main objectives will be addressed: (1) Longevity of the most abundant perennial dicotyledonous herb species in each of the 150 experimental grassland plots of the Exploratories will be determined to test how it is related to land use and species diversity of different grasslands or varies among regions with different environmental conditions. (2) The spectrum and distribution of life spans in populations of four frequent perennial dicotyledonous herb species will be studied to test how the relationship between age structure and population sizes and stabilities varies dependent on land use, species diversity and environmental differences between regions. (3) Growth ring width and stem anatomical traits will be analyzed in all samples to assess their dependency on age of the plant individuals (or ramets), land use and diversity of grasslands or environmental differences between regions. (4) Data on life span and stem anatomical characteristics of a large number of perennial dicotyledonous herb species will be related to phylogeny and traits related to growth and reproduction to test for trade-offs between traits. This project will be novel in determining for the first time for a large number of perennial dicotyledonous herb species how variation in plant individual (or ramet) longevity and stem anatomical characteristics is related to land use, species diversity and regional environmental differences in grasslands. We will extend trait-based ecology to a demographic perspective which is an important prerequisite to understand the viability and persistence of plant populations and the long-term stability of plant communities.
植物寿命是一个重要的人口统计学特征,对于植物物种的生活史、植物种群的持续性和稳定性以及植物物种对环境变化的响应都具有重要意义。关于植物个体(或分株)寿命的信息,特别是其取决于土地利用和地理区域的变化,对于大量常见的草地物种来说是不可用的。此外,茎的解剖性状相关的功能,如运输,存储和机械支持在很大程度上被忽视的草本植物的生态研究,因此,它是不知道如何敏感地响应这些性状的变化,环境条件。该项目的主要目的是解决这一知识缺乏问题,方法是利用年轮研究植物个体(或分株)的寿命,并测量生物多样性探索站草原上大量多年生双子叶草本植物物种的茎解剖特征。主要目标如下:(1)在150个实验草地中,测定最丰富的多年生双子叶草本植物物种的寿命,以测试其与不同草地的土地利用和物种多样性的关系,或在不同环境条件的地区之间的差异。(2)研究了四种常见的多年生双子叶草本植物种群的寿命谱和分布,以检验年龄结构与种群大小和稳定性之间的关系如何随土地利用、物种多样性和区域间环境差异而变化。(3)将分析所有样本的生长轮宽度和茎解剖特征,以评估它们对植物个体(或分株)年龄、土地利用和草地多样性或区域间环境差异的依赖性。(4)大量的多年生双子叶草本植物物种的寿命和茎解剖学特征的数据将与生育和与生长和繁殖相关的性状相关,以测试性状之间的权衡。该项目将首次确定大量多年生双子叶草本植物物种的植物个体(或分株)寿命和茎解剖特征的变化与草地土地利用、物种多样性和区域环境差异的关系。我们将基于特征的生态学扩展到人口统计学的角度,这是理解植物种群的生存能力和持久性以及植物群落的长期稳定性的重要前提。

项目成果

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Privatdozentin Dr. Christiane Roscher其他文献

Privatdozentin Dr. Christiane Roscher的其他文献

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{{ truncateString('Privatdozentin Dr. Christiane Roscher', 18)}}的其他基金

The role of plant functional traits and trait variation for community assembly and productivity in semi-natural and experimentally manipulated grasslands
植物功能性状和性状变异对半自然和实验操纵草地群落组装和生产力的作用
  • 批准号:
    220338911
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Research Grants
The role of plant functional traits and plant interactions for plant community functioning, stability and dynamics, and processes at the ecosystem level
植物功能性状和植物相互作用对植物群落功能、稳定性和动态以及生态系统水平过程的作用
  • 批准号:
    173331006
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Heisenberg Fellowships
Effekte von Diversität und Ressourcenverfügbarkeit auf der Plastizität funktioneller Eigenschaften von Pflanzen, pflanzliche Interaktionen und die Bestandsproduktivität
多样性和资源可用性对植物功能特性可塑性、植物相互作用和林分生产力的影响
  • 批准号:
    173344099
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Aboveground plant community pattern and the role of plant traits for community processes
地上植物群落模式和植物性状对群落过程的作用
  • 批准号:
    61560735
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Units
Seed and seedling traits as related to plant diversity and community assembly in grasslands at different land-use intensity
不同土地利用强度草地种子和幼苗性状与植物多样性和群落组装的关系
  • 批准号:
    432956689
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Infrastructure Priority Programmes
Land-use effects on plant regeneration strategies in grasslands and their relation to community assembly
土地利用对草原植物再生策略的影响及其与群落聚集的关系
  • 批准号:
    512282710
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Infrastructure Priority Programmes
Plant nutrient responses
植物养分反应
  • 批准号:
    531337869
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Units

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降低慢病毒载体转录“通读率”的研究
  • 批准号:
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  • 批准年份:
    2012
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    70.0 万元
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合作研究:MRA:估计和预测非平稳、多尺度气候和土地利用对鸟类群落的影响
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开发多尺度沉积物连通性模型,以改善全球沉积物产量预测并研究土地利用和气候变化对土壤侵蚀的影响
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