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

58
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...
58
Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

900
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
900
Typical Model Studies01:30

Typical Model Studies

842
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
842
Regulation of Water Output01:26

Regulation of Water Output

2.0K
The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...
2.0K

You might also read

Related Articles

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

Sort by
Same author

Satellite observations reveal widespread alteration of river thermal regimes by US dams.

Science advances·2026
Same author

Dispersal Propensity and Dispersal Distance Are Genetically Independent Traits in a Stream Salamander.

Molecular ecology·2026
Same author

Lower but not upper thermal tolerance differs with opportunity for thermoregulation in a semi-fossorial lizard.

Journal of thermal biology·2026
Same author

Forest recovery after deforestation is fueled by mineral weathering at the expense of ecosystem buffering capacity.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Ecosystem-engineered infections: beaver-modified wetlands are associated with conflicting drivers of amphibian pathogen prevalence.

Royal Society open science·2025
Same author

Long‑term monitoring of mercury in Vermont's forest soils: trends over 20 years in near-surface horizons.

Environmental monitoring and assessment·2025

Related Experiment Video

Updated: May 1, 2026

Understanding Dissolved Organic Matter Biogeochemistry Through In Situ Nutrient Manipulations in Stream Ecosystems
09:38

Understanding Dissolved Organic Matter Biogeochemistry Through In Situ Nutrient Manipulations in Stream Ecosystems

Published on: October 29, 2016

9.6K

Network analysis reveals multiscale controls on streamwater chemistry.

Kevin J McGuire1, Christian E Torgersen2, Gene E Likens3

  • 1Virginia Water Resources Research Center and Department of Forest Resources and Environmental Conservation, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061; kevin.mcguire@vt.edu likensg@ecostudies.org.

Proceedings of the National Academy of Sciences of the United States of America
|April 23, 2014
PubMed
Summary

Spatial processes impact streamwater chemistry differently across stream networks. This study reveals how scale and connectivity influence biogeochemical patterns, separating in-stream from landscape controls.

Keywords:
autocorrelationbiogeochemistryheterogeneityhydrologic connectivitywatershed

More Related Videos

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

7.7K
Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
12:50

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

10.2K

Related Experiment Videos

Last Updated: May 1, 2026

Understanding Dissolved Organic Matter Biogeochemistry Through In Situ Nutrient Manipulations in Stream Ecosystems
09:38

Understanding Dissolved Organic Matter Biogeochemistry Through In Situ Nutrient Manipulations in Stream Ecosystems

Published on: October 29, 2016

9.6K
Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

7.7K
Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
12:50

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

10.2K

Area of Science:

  • Environmental Science
  • Geochemistry
  • Hydrology

Background:

  • Stream networks are complex systems influenced by both landscape and in-stream processes.
  • Understanding spatial patterns in streamwater chemistry is crucial for effective watershed management.

Purpose of the Study:

  • To investigate how spatial processes differentially affect biogeochemical conditions in a headwater stream network.
  • To quantify spatial patterns of streamwater chemistry at various scales and relationships (flow-connected, unconnected, Euclidean).

Main Methods:

  • Collected 664 water samples across 32 tributaries in a fifth-order stream network.
  • Analyzed an exhaustive suite of chemical constituents.
  • Applied network-based geostatistical analysis using empirical semivariograms incorporating network topology.

Main Results:

  • Spatial structure of streamwater chemistry varied among chemical constituents and spatial relationships.
  • Spatial dependence patterns differed from expectations for some constituents (e.g., nitrate, sodium) but not others (e.g., dissolved organic carbon, sulfate, aluminum).
  • Identified distinct spatial scales and separated in-stream processes from landscape controls.

Conclusions:

  • Spatial processes hierarchically scale, influencing biogeochemical patterns across local, longitudinal, and landscape levels.
  • Semivariogram analysis effectively distinguishes between fine-scale/broad-scale and in-stream/landscape process effects.
  • Findings enhance understanding of the drivers of stream network biogeochemistry.