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

Primary Production01:06

Primary Production

25.1K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
25.1K
Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

785
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.
785
What are Biogeochemical Cycles?00:54

What are Biogeochemical Cycles?

39.1K
The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
39.1K
The Phosphorus Cycle01:21

The Phosphorus Cycle

43.6K
Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
43.6K
Bioremediation00:46

Bioremediation

22.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.0K
Diversity of Protists III01:27

Diversity of Protists III

738
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
738

You might also read

Related Articles

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

Sort by
Same author

qPCR-based quantification reveals high plant host-specificity of endophytic colonization levels in leaves.

American journal of botany·2024
See all related articles

Related Experiment Video

Updated: Jan 16, 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

10.4K

Shallow-lake sediments release nutrients by complete destratification events.

Jiří Jan1, Felipe Breton1,2, Jakub Borovec1,2

  • 1ISBB, Biology Centre CAS, České Budějovice, Czech Republic.

Journal of Environmental Quality
|October 1, 2025
PubMed
Summary

Shallow lake mixing events significantly impact nutrient cycling. Complete mixing releases more phosphorus and ammonia from sediments than partial mixing, affecting phytoplankton growth.

More Related Videos

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

17.8K
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

11.0K

Related Experiment Videos

Last Updated: Jan 16, 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

10.4K
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

17.8K
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

11.0K

Area of Science:

  • Environmental Science
  • Limnology
  • Aquatic Ecology

Background:

  • Phytoplankton community development in hypereutrophic shallow lakes is poorly understood and unpredictable.
  • These lakes are frequently utilized for aquaculture purposes.
  • Abiotic factors influencing phytoplankton succession require further investigation.

Purpose of the Study:

  • To investigate the relationship between short-term mixing events and nutrient release from sediments in a shallow lake.
  • To understand the role of hydrodynamics and stratification cycles in regulating internal nutrient loading.

Main Methods:

  • In situ measurements of lake mixing and stratification dynamics during summer.
  • Laboratory-based stirred-core experiments simulating lake hydrodynamic regimes and destratification.
  • Analysis of solute release from sediments under different mixing conditions (complete vs. partial destratification).

Main Results:

  • The lake exhibited a dynamic cycle of stratification and mixing, with stratification occurring 45% of the time.
  • Complete mixing led to greater release of phosphorus and ammonia from sediments compared to partial mixing.
  • Sediments consumed more nitrate during full mixing; dissolved oxygen levels did not directly limit nutrient release but mixing enhanced electron acceptor transport.

Conclusions:

  • The stratification and mixing cycle is a critical driver of internal nutrient loading in shallow lakes under oxic conditions.
  • Understanding these hydrodynamic processes is essential for managing nutrient dynamics and phytoplankton development in aquaculture lakes.