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

Freshwater Microbial Ecology01:24

Freshwater Microbial Ecology

Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...
Microenvironments01:22

Microenvironments

Microorganisms inhabit highly localized spaces known as microenvironments, which are defined by distinct physical and chemical characteristics. These include oxygen concentration, pH, temperature, light availability, and nutrient levels. The conditions within a microenvironment can differ markedly from those in the surrounding area and significantly influence microbial growth, metabolism, and community structure.Microenvironments often display sharp physicochemical gradients over small spatial...
Introduction to Microbial Ecology01:28

Introduction to Microbial Ecology

Microbial ecology examines the complex web of interactions and diversity among microorganisms within various ecosystems. This field seeks to understand how microbial populations adapt to and influence their environments and how these interactions shape broader ecological processes. Microbes are integral to ecosystem function, participating in nutrient cycling, energy flow, and the maintenance of environmental homeostasis.An ecosystem represents a dynamic interaction between living organisms...
Methods to Assess Microbial Communities01:19

Methods to Assess Microbial Communities

Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...
Marine Microbial Ecology01:30

Marine Microbial Ecology

Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...

You might also read

Related Articles

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

Sort by
Same author

External Evaluation of Population Pharmacokinetic Models for Factor VIII in Chinese Patients with Hemophilia A.

Journal of clinical pharmacology·2026
Same author

Engineering cells for solid tumor therapy.

Trends in pharmacological sciences·2026
Same author

Animal models of idiopathic membranous nephropathy: Recent advances and future perspectives.

Animal models and experimental medicine·2026
Same author

Contribution of resting pulse rate to fall risk prediction in patients with glaucoma: a nationwide retrospective study based on an XGBoost model.

BMC ophthalmology·2026
Same author

Development and Internal Validation of a Nomogram for Predicting Reflux Esophagitis in Candidates for Metabolic Bariatric Surgery.

Obesity surgery·2026
Same author

Optimization of IS621 recombinase/bridge RNA-directed recombination for precise insertion of large DNA fragments in human cells.

Nature communications·2026

Related Experiment Video

Updated: Jun 27, 2026

Evaluating the Impact of Hydraulic Fracturing on Streams using Microbial Molecular Signatures
09:11

Evaluating the Impact of Hydraulic Fracturing on Streams using Microbial Molecular Signatures

Published on: April 4, 2021

Multidimensional Differences and Driving Mechanisms of Bacterial Communities in Urban and Rural Rivers Across China.

Lina Wu1,2, Shuai Lu1,2,3,4, Fanjin Ye3

  • 1Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China.

Microorganisms
|June 26, 2026
PubMed
Summary

Urban rivers show higher nutrient levels and bacterial diversity, with distinct microbial communities and functions compared to rural rivers. These findings support tailored watershed management strategies.

Keywords:
co-occurrence network analysiscommunity assemblycommunity structurefunctional predictionplanktonic bacteria

More Related Videos

Methods for Characterizing the Co-development of Biofilm and Habitat Heterogeneity
09:21

Methods for Characterizing the Co-development of Biofilm and Habitat Heterogeneity

Published on: March 11, 2015

Divergence of Root Microbiota in Different Habitats based on Weighted Correlation Networks
09:49

Divergence of Root Microbiota in Different Habitats based on Weighted Correlation Networks

Published on: September 25, 2021

Related Experiment Videos

Last Updated: Jun 27, 2026

Evaluating the Impact of Hydraulic Fracturing on Streams using Microbial Molecular Signatures
09:11

Evaluating the Impact of Hydraulic Fracturing on Streams using Microbial Molecular Signatures

Published on: April 4, 2021

Methods for Characterizing the Co-development of Biofilm and Habitat Heterogeneity
09:21

Methods for Characterizing the Co-development of Biofilm and Habitat Heterogeneity

Published on: March 11, 2015

Divergence of Root Microbiota in Different Habitats based on Weighted Correlation Networks
09:49

Divergence of Root Microbiota in Different Habitats based on Weighted Correlation Networks

Published on: September 25, 2021

Area of Science:

  • Environmental microbiology
  • Ecosystem ecology
  • Riverine biogeochemistry

Background:

  • Urbanization significantly impacts aquatic ecosystems, altering water quality and microbial community structure.
  • Understanding bacterial community dynamics is crucial for effective watershed management and ecological restoration.

Purpose of the Study:

  • To systematically compare bacterial communities in urban and rural rivers across China.
  • To elucidate differences in structure, function, pathogen composition, and assembly mechanisms.
  • To provide a scientific basis for differentiated watershed management.

Main Methods:

  • Integrated analysis of water quality data from 421 sites and 16S rRNA gene sequences from 475 sites.
  • Comparative analysis of bacterial α-diversity, β-diversity, phyla/genera abundance, and co-occurrence networks.
  • Functional prediction of microbial communities and assessment of community assembly processes.

Main Results:

  • Urban rivers exhibited higher nutrient concentrations, bacterial α-diversity, and organic matter degraders (Chloroflexi, Acidobacteriota), with more complex networks.
  • Rural rivers showed higher β-diversity, specific phyla (Firmicutes, Cyanobacteria), genera (Exiguobacterium, Limnohabitans), higher network modularity, and spatial heterogeneity.
  • Urban rivers had stronger carbon-cycling potential and a higher number of pathogen species; heterogeneous selection was a stronger assembly driver in urban rivers.

Conclusions:

  • Significant differences exist in bacterial community structure, function, pathogen profiles, and assembly mechanisms between urban and rural rivers.
  • Urban rivers are characterized by higher diversity and specific functional potentials, while rural rivers exhibit greater spatial heterogeneity.
  • Findings underscore the need for differentiated watershed management strategies tailored to urban and rural river characteristics.