Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

What are Populations and Communities?00:30

What are Populations and Communities?

37.9K
Overview
37.9K
The Soil Ecosystem02:23

The Soil Ecosystem

24.8K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
24.8K
Freezing Point Depression and Boiling Point Elevation03:12

Freezing Point Depression and Boiling Point Elevation

40.3K
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
40.3K
What is an Electrochemical Gradient?01:26

What is an Electrochemical Gradient?

128.1K
Adenosine triphosphate, or ATP, is considered the primary energy source in cells. However, energy can also be stored in the electrochemical gradient of an ion across the plasma membrane, which is determined by two factors: its chemical and electrical gradients.
The chemical gradient relies on differences in the abundance of a substance on the outside versus the inside of a cell and flows from areas of high to low ion concentration. In contrast, the electrical gradient revolves around an...
128.1K
Bacterial Signaling01:30

Bacterial Signaling

40.8K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
40.8K
Elevation of Intermediate Points on Vertical Curves01:20

Elevation of Intermediate Points on Vertical Curves

293
Vertical curves are essential in roadway design because they provide smooth transitions between varying roadway grades. Designing vertical curves involves calculating intermediate elevations and identifying the curve's highest or lowest point, which is essential for optimal roadway performance.Intermediate elevations on a vertical curve are determined using the tangent offset method. This method considers the initial elevation at the start of the curve, the grades, and the curve's geometry. The...
293

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reamed and unreamed intramedullary nailing for the treatment of open and closed tibial fractures: a subgroup analysis of randomised trials.

International orthopaedics·2009
Same author

Selective COX-2 inhibitor versus nonselective COX-1 and COX-2 inhibitor in the prevention of heterotopic ossification after total hip arthroplasty: a meta-analysis of randomised trials.

International orthopaedics·2009
Same author

[Study on evaluating sex determining region of the Y as an engrafting track of BMSCs transplantation for repairing osteonecrosis of the femoral head of rabbit].

Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery·2009
Same author

Positive association between benign familial infantile convulsions and LGI4.

Brain & development·2009
Same author

Catalytic enantioselective synthesis of chiral phthalides by efficient reductive cyclization of 2-acylarylcarboxylates under aqueous transfer hydrogenation conditions.

Organic letters·2009
Same author

Significance of urinary liver-fatty acid-binding protein in cardiac catheterization in patients with coronary artery disease.

Internal medicine (Tokyo, Japan)·2009

Related Experiment Video

Updated: Feb 6, 2026

Author Spotlight: Developing Synthetic Microbial Communities for Generating Second-Generation Biofertilizers
04:29

Author Spotlight: Developing Synthetic Microbial Communities for Generating Second-Generation Biofertilizers

Published on: May 24, 2024

1.6K

Soil C/N ratio governs bacterial community assembly along an arid mountain elevational gradient.

Yongguang Zhang1,2, Chaonan Li3, Fanjiang Zeng2

  • 1Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China.

Frontiers in Microbiology
|February 5, 2026
PubMed
Summary

Soil bacterial diversity in cold-arid mountains is shaped by elevation, precipitation, and vegetation. The soil carbon-to-nitrogen ratio, influenced by vegetation, is key to bacterial community assembly in these fragile ecosystems.

Keywords:
Central Kunlun Mountainsdriving factorsecological processeselevational gradientssoil ecosystemsoil organic carbon to nitrogen (C/N) ratio

More Related Videos

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere
09:55

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Published on: May 2, 2018

28.2K
Bioreactor Assembly for Continuous Culture of Complex Fecal Communities
09:37

Bioreactor Assembly for Continuous Culture of Complex Fecal Communities

Published on: April 25, 2025

1.2K

Related Experiment Videos

Last Updated: Feb 6, 2026

Author Spotlight: Developing Synthetic Microbial Communities for Generating Second-Generation Biofertilizers
04:29

Author Spotlight: Developing Synthetic Microbial Communities for Generating Second-Generation Biofertilizers

Published on: May 24, 2024

1.6K
Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere
09:55

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Published on: May 2, 2018

28.2K
Bioreactor Assembly for Continuous Culture of Complex Fecal Communities
09:37

Bioreactor Assembly for Continuous Culture of Complex Fecal Communities

Published on: April 25, 2025

1.2K

Area of Science:

  • Microbial Ecology
  • Soil Science
  • Biogeography

Background:

  • Soil bacterial communities are crucial for fragile cold-arid mountain ecosystems.
  • Mechanisms of bacterial community assembly along elevational gradients are poorly understood.

Purpose of the Study:

  • Investigate bacterial community assembly mechanisms along an elevational gradient in the Central Kunlun Mountains.
  • Identify key environmental drivers shaping soil bacterial diversity and community structure.

Main Methods:

  • Analyzed soil bacterial communities across an elevational gradient (1,707–3,548 m).
  • Assessed relationships between bacterial diversity (alpha and beta) and environmental factors (precipitation, vegetation, soil pH, C/N ratio).
  • Utilized phylogenetic clustering to infer community assembly processes.

Main Results:

  • Bacterial alpha-diversity increased with elevation; beta-diversity showed a hump-shaped pattern.
  • Mean annual precipitation and vegetation cover were primary drivers, stronger than soil pH.
  • Soil organic carbon-to-nitrogen ratio emerged as the dominant factor after accounting for multicollinearity.
  • Higher elevations showed increased phylogenetic clustering, indicating deterministic selection linked to vegetation.

Conclusions:

  • Vegetation plays a pivotal role in mediating bacterial community assembly by modulating the soil C/N ratio in arid mountains.
  • Stochastic processes still dominate overall bacterial assembly, despite deterministic influences at higher elevations.
  • Findings refine microbial biogeographic models, emphasizing vegetation-soil stoichiometry interplay under environmental stress for predicting climate change impacts.