Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

What are Populations and Communities?00:30

What are Populations and Communities?

34.0K
Overview
34.0K
Gene Flow02:39

Gene Flow

35.3K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.3K
Conservation of Small Populations02:04

Conservation of Small Populations

13.2K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.2K
Conservation of Declining Populations02:07

Conservation of Declining Populations

9.7K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.7K
Mechanistic Models: Compartment Models in Individual and Population Analysis01:23

Mechanistic Models: Compartment Models in Individual and Population Analysis

65
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
65
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

58.6K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Multimodal analysis of cell-free DNA to improve early detection of gastric cancer.

BMC cancer·2026
Same author

Tumor-naïve multimodal profiling of circulating tumor DNA to detect minimal residual disease in solid tumors.

Therapeutic advances in medical oncology·2025
Same author

Progressive changes in phenotype, transcriptome and proliferation capacity characterise continued maturation and migration of intestinal cDCs in homeostasis.

Nature communications·2025
Same author

Multimodal analysis of cell-free DNA enhances differentiation of early-stage breast cancer from benign lesions and healthy individuals.

BMC biology·2025
Same author

Cost-effective shallow genome-wide sequencing for profiling plasma cfDNA signatures to enhance lung cancer detection.

Future oncology (London, England)·2025
Same author

Prospective validation study: a non-invasive circulating tumor DNA-based assay for simultaneous early detection of multiple cancers in asymptomatic adults.

BMC medicine·2025

相关实验视频

Updated: Jul 23, 2025

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
07:40

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

11.1K

空间超人口动态与本地和全球殖民化.

Dieu Huong Le1, Trong Hieu Nguyen2, Fugo Takasu3

  • 1Graduate School of Humanities and Sciences, Nara Women's University, Nara, Japan.

Journal of theoretical biology
|July 16, 2023
PubMed
概括
此摘要是机器生成的。

本研究介绍了使用随机点模式动态的空间超人口模型. 该模型成功地描述了模拟结果,突出了当地殖民范围和全球殖民比例在元人口动态中的作用.

关键词:
殖民化和灭绝的过程这是一个点的过程,点的过程.空间生态学 空间生态学空间人口动态空间人口动态

更多相关视频

Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy
07:00

Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy

Published on: October 4, 2024

632
Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

8.8K

相关实验视频

Last Updated: Jul 23, 2025

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
07:40

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

11.1K
Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy
07:00

Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy

Published on: October 4, 2024

632
Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

8.8K

科学领域:

  • 生态生态学 生态生态学
  • 数学生物学 数学生物学
  • 空间动力学空间动力学

背景情况:

  • 变种模型对于理解物种持久性至关重要.
  • 经典模型往往缺乏空间显式动态.
  • 随机性和空间配置显著影响生态过程.

研究的目的:

  • 在连续空间上开发和分析空间超人口模型.
  • 将非空间Levins模型扩展到一个空间显式框架.
  • 调查随机点模式动态在元人口持久性中的作用.

主要方法:

  • 随机点模式分析. 随机点模式分析.
  • 对补丁动态的模拟分析 (本地灭绝,本地/全球殖民).
  • 分析模型的推导使用单元,对和三元概率与闭包近似.

主要成果:

  • 均衡单点和对概率是通过分析推导的.
  • 衍生的属性准确地描述了模拟结果.
  • 确定了关键因素:当地殖民的范围和全球殖民的比例.

结论:

  • 点式模式方法为研究空间生态动态提供了优势.
  • 该模型成功地扩展了莱文斯模型,将空间显式因素纳入其中.
  • 需要进一步开发用于点模式动态的数学工具.