在物种-区域关系中的几何和规模
Henrique Miguel Pereira1, Luís Borda-de-Água, Inês Santos Martins
1Centro de Biologia Ambiental, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal. hpereira@fc.ul.pt
Nature
|February 24, 2012
概括
种类-区域关系 (SAR) 和特有物种-区域关系 (EAR) 不是普遍适用的. 它们的准确性取决于息地破坏的几何和规模,挑战了以前的灭绝率估计.
科学领域:
- 生态生态学 生态生态学
- 生物多样性科学 生物多样性科学
- 保护生物学 保护生物学
背景情况:
- 之前的一项研究提出了物种-区域关系 (SAR) 和特有物种-区域关系 (EAR) 的抽样理论.
- 这个理论表明,灭绝率被高估了,因为EAR始终低于SAR.
- 该研究还批评了千年生态系统评估估计.
研究的目的:
- 重新评估SAR和EAR采样理论的概括性.
- 调查息地破坏几何和规模对灭绝率估计的影响.
- 为了解决对千年生态系统评估估计的批评.
主要方法:
- 生态采样理论的理论分析.
- 在不同的息地丧失场景下,对物种-区域和特有物种-区域关系的数学建模.
- 不同灭绝估计方法的比较分析.
主要成果:
- 总结EAR总是低于SAR的结论不是普遍的.
- SAR和EAR之间的关系取决于息地破坏的几何结构.
- SAR的规模显著影响观察到的关系.
- 对千年生态系统评估估计的批评被发现是部分毫无根据的,因为他们的方法不仅仅依赖SAR.
结论:
- 希和哈贝尔抽样理论的适用性取决于上下文.
- 息地破坏的几何和规模是精确估计灭绝率的关键因素.
- 以前对灭绝率的高估可能是由于未能考虑这些上下文因素.
- 需要进一步的研究来完善灭绝估计模型并解决剩余的不确定性.
相关概念视频
Pulmonary Tuberculosis I
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis V
Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...


