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

Predicting Molecular Geometry02:27

Predicting Molecular Geometry

46.0K
VSEPR Theory for Determination of Electron Pair Geometries
46.0K
The Phosphorus Cycle01:21

The Phosphorus Cycle

44.0K
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.
44.0K
Stream Function01:20

Stream Function

2.1K
In two-dimensional incompressible fluid flow, the continuity equation is essential for ensuring mass conservation, meaning that any change in fluid entering or exiting a region is balanced by a corresponding change elsewhere. For incompressible flow, where density remains constant, this requirement simplifies to the condition that the divergence of the velocity field must be zero. Mathematically, this is expressed as,
2.1K
National Nursing Organizations I01:26

National Nursing Organizations I

3.1K
Nursing organizations assume a significant role in consistently developing the nursing profession through education, research studies, establishing practice standards, and reforming health policies. Typically, nursing organizations operate at the regional, national, and international levels. For example, the International Council of Nurses (ICN) represents more than 28 million nurses worldwide. In contrast, the American Nurses Association (ANA) is a membership organization representing nurses...
3.1K
National Nursing Organizations II01:30

National Nursing Organizations II

2.1K
Nursing organizations play a vital role in representing nurses working in specialized clinical settings, such as the American Association of Critical-Care Nurses (AACN).
The AACN emphasizes a healthy work environment through six standards to achieve an optimal patient outcome. The standards are appropriate staffing, meaningful recognition, collaboration, authentic leadership, effective communication, and decision-making. In addition, AACN provides certification programs, webinars, journals, and...
2.1K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

7.0K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
7.0K

You might also read

Related Articles

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

Sort by
Same author

Pervasive summertime nitrous oxide undersaturation in U.S. lakes and reservoirs.

Nature communications·2026
Same author

Freezing periphyton samples and storage duration do not affect the use of diatom DNA metabarcoding to determine effects of stressors on streams.

Environmental monitoring and assessment·2025
Same author

Assessment of Emerging Pathogens and Antibiotic Resistance Genes in the Biofilm of Microplastics Incubated Under a Wastewater Discharge Simulation.

Environmental microbiology·2025
Same author

Using DNA metabarcoding to characterize national scale diatom-environment relationships and to develop indicators in streams and rivers of the United States.

The Science of the total environment·2024
Same author

Using Single-Species and Whole Community Stream Mesocosm Exposures for Identifying Major Ion Effects in Doses Mimicking Resource Extraction Wastewaters.

Water·2024
Same author

Towards a global sustainable development agenda built on social-ecological resilience.

Global sustainability·2023

Related Experiment Video

Updated: Feb 7, 2026

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

IMPROVING PREDICTIVE MODELS OF IN-STREAM PHOSPHORUS CONCENTRATION BASED ON NATIONALLY-AVAILABLE SPATIAL DATA

Murray W Scown1, Michael G McManus1, John H Carson1

  • 1Formerly, ORISE Postdoctoral Research Participant, c/o Office of Research and Development, U.S. Environmental Protection Agency, currently Postdoctoral Research Fellow (Scown), Lund University Centre for Sustainability Studies, Lund, Sweden 22362; Ecologist (McManus), National Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268; formerly, Senior Statistician, CB&I Federal Services, currently Director (Carson), P&J Carson Consulting, LLC, Findlay, Ohio 45840; Ecologist (Nietch), National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268.

Journal of the American Water Resources Association
|July 24, 2018
PubMed
Summary

Local watershed data significantly improves total phosphorus (TP) models. Spatial stream network (SSN) modeling with local data offers the highest accuracy for watershed management and prediction.

Keywords:
Spatial dataautocorrelationphosphorusstatistical modelingstream networks

More Related Videos

A Protocol for Computer-Based Protein Structure and Function Prediction
16:41

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

69.8K
Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
14:27

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

16.3K

Related Experiment Videos

Last Updated: Feb 7, 2026

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
A Protocol for Computer-Based Protein Structure and Function Prediction
16:41

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

69.8K
Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
14:27

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

16.3K

Area of Science:

  • Watershed science
  • Environmental modeling
  • Water quality management

Background:

  • Nationally available spatial data are increasingly used in watershed management but their local suitability is often unexamined.
  • Understanding factors influencing total phosphorus (TP) concentrations is crucial for watershed health.

Purpose of the Study:

  • To assess if incorporating local watershed data improves total phosphorus (TP) models developed from national datasets.
  • To compare the predictive accuracy of spatial stream network (SSN) models against traditional nonspatial multiple linear regression models.

Main Methods:

  • Developed and compared TP concentration models using national spatial data versus models augmented with local watershed-specific data.
  • Utilized a spatial stream network (SSN) modeling approach and compared it with multiple linear regression (nonspatial) models.
  • Identified significant local covariates, such as septic systems and point source TP loads.

Main Results:

  • The SSN model incorporating local covariates demonstrated the highest goodness of fit and predictive accuracy.
  • Nonspatial models using only national data yielded the lowest predictive performance.
  • Septic systems and point source TP loads were identified as significant local predictors of TP concentrations.

Conclusions:

  • Spatial stream network (SSN) modeling enhances prediction accuracy when using national spatial covariates.
  • Integrating local watershed data, especially septic system locations, substantially increases the accuracy of TP predictions.
  • Future national spatial databases should include detailed local variables for improved watershed management.