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

Microbial Wastewater Treatment01:30

Microbial Wastewater Treatment

Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
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...
The Roles of Bacteria and Fungi in Plant Nutrition02:11

The Roles of Bacteria and Fungi in Plant Nutrition

Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this nitrogen...
Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation. However, because inorganic electron donors...
The Nitrogen Cycle01:49

The Nitrogen Cycle

Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...

You might also read

Related Articles

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

Sort by
Same author

Evaluation of pyrolyzed areca husk as a potential adsorbent for the removal of Fe<sup>2+</sup> ions from aqueous solutions.

Journal of environmental management·2019
Same author

Modified scheme for one-dimensional BOD-DO models.

Journal of environmental science & engineering·2010
Same author

Polynomialized model for critical DO deficit.

Journal of environmental science & engineering·2009
Same author

Effect of media characteristics on performance of upflow aerobic biofilters.

Journal of environmental science & engineering·2009
Same author

Evaluation of water quality index for drinking purposes for river Netravathi, Mangalore, South India.

Environmental monitoring and assessment·2007
Same journal

Modeling and Simulation of Road Traffic Noise Using Artificial Neural Network and Regression.

Journal of environmental science & engineering·2015
Same journal

Air Quality Indices: A Literature Review.

Journal of environmental science & engineering·2015
Same journal

Vermicomposting of Solid Waste Using Local and Exotic Earthworms: A Comparative Study.

Journal of environmental science & engineering·2015
Same journal

Experimental Studies on Co-composting of Municipal Solid Waste with Paper Mill Sludge.

Journal of environmental science & engineering·2015
Same journal

Decolorization of Sulphonated Azodye Metanil Yellow by Newly Isolated Bacterial Strain: Bacillus -3330.

Journal of environmental science & engineering·2015
Same journal

Optimisation of Environmental Conditions for Enhanced Production of Fungal Exopectinase Using Agro-industrial Wastes.

Journal of environmental science & engineering·2015
See all related articles

Related Experiment Video

Updated: Jun 6, 2026

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
10:11

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

Nutrient contributions by benthal sludge deposits.

Devendra S Bhargava1, S Shrihari

  • 1IIT Roorkee, Bhargava Lane, Devpura, Haridwar - 249 401, Uttarakhand. dsbhargava@gmail.com

Journal of Environmental Science & Engineering
|December 2, 2010
PubMed
Summary
This summary is machine-generated.

Nutrient release from riverbed benthal deposits is a key internal source for aquatic systems. Release rates vary with sludge depth and time, impacting nitrogen and phosphorus cycles.

More Related Videos

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

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading
10:49

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Published on: March 6, 2014

Related Experiment Videos

Last Updated: Jun 6, 2026

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
10:11

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

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

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading
10:49

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Published on: March 6, 2014

Area of Science:

  • Environmental Science
  • Water Quality Management
  • Geochemistry

Background:

  • Settled solids in rivers (benthal deposits) decompose, releasing nutrients.
  • This internal nutrient source significantly impacts aquatic ecosystems.
  • Sediment-water exchange is crucial for nitrogen and phosphorus cycling.

Purpose of the Study:

  • To investigate nutrient release from benthal deposits.
  • To understand factors influencing nutrient exchange between sediment and overlying water.
  • To analyze nutrient release under varying sludge accumulation conditions.

Main Methods:

  • Monitoring nutrient release rates (ammonia nitrogen, phosphate) from benthal sludge.
  • Assessing the influence of sludge depth, water flow rate, and h/d ratios.
  • Evaluating nutrient release over time and under different addition frequencies.

Main Results:

  • Ammonia nitrogen release peaked at 0.2 m sludge depth, unaffected by flow or h/d ratios.
  • Phosphate release was independent of sludge depth, flow rate, and h/d ratios.
  • Nutrient release decreased over time, stabilizing after approximately 40 days, with less release at lower addition frequencies.

Conclusions:

  • Benthal deposits are a significant internal nutrient source in rivers.
  • Nutrient release dynamics are complex, influenced by sludge characteristics and time.
  • Understanding these processes is vital for effective water quality management.