在不断变暖的原生物群中植物功能性特征的变化
Anne D Bjorkman1,2,3, Isla H Myers-Smith4, Sarah C Elmendorf5,6,7
1School of GeoSciences, University of Edinburgh, Edinburgh, UK. anne.bjorkman@senckenberg.de.
Nature
|September 28, 2018
概括
原的生态系统正在迅速变暖. 植物的高度随着30年的变暖而增加, 但其他特征慢慢改变, 挑战未来生态系统功能的预测.
科学领域:
- 生态学
- 气候变化生物学
- 北极和阿尔卑斯山的生态系统
背景情况:
- 北极原的变暖速度比其他全球生物更快.
- 了解植物对环境变化的反应对于预测生态系统的运作至关重要.
- 植被和气候之间的全球反循环需要对原生物组动态进行研究.
研究的目的:
- 研究温度,湿度和七个关键植物功能特征之间的全生物体关系.
- 分析这些跨空间梯度和三十年的变暖的关系.
- 预测气候变暖对原植物群落和生态系统功能的影响.
主要方法:
- 分析了117个原地区的植物功能特征.
- 检查特征与环境关系的空间模式和时间变化 (超过30年).
- 统计建模以评估温度和土壤湿度对植物特征的影响.
主要成果:
- 在温度和植物特征之间观察到强烈的空间关系.
- 土壤湿度显著影响了温度与特征关系的强度和方向.
- 随着所有地点的变暖,社区的高度都增加了,但其他特征的反应较慢.
结论:
- 空间替代时间可能会高估原生态系统的功能变化速度.
- 植物的高度是一个关键的特征, 随着不断变暖,
- 环境因素极大地影响了原群体,因此可以更好地预测功能变化.
相关概念视频
Trait and State Self-Esteem
11.5K
The term self-esteem is often used generically, to refer to how people feel about themselves. However, according to research, there are three distinct constructs that should not be used interchangeably (Brown & Marshall, 2006).
11.5K
Polygenic Traits
69.1K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
69.1K
Plant Breeding and Biotechnology
21.8K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
21.8K
Multiple Allele Traits
38.1K
The Concept of Multiple Allelism
38.1K
Plant Tissue Culture
40.7K
Plant tissue culture is widely used in both primary and applied science. Applications range from plant development studies to functional gene studies, crop improvement, commercial micropropagation, virus elimination, and conservation of rare species.
40.7K
Traits and States
560
Personality traits represent consistent patterns in behavior, thoughts, and emotions, reflecting an individual's tendencies across various situations. For example, extraversion, a well-known trait, manifests in individuals as talkative, energetic, and enthusiastic behaviors. These traits are stable over time, offering a reliable framework for predicting how people might act in different contexts. However, they do not define every moment of an individual's life. In contrast to traits,...
560


