Not logged in
Data Publisher for Earth & Environmental Science

Amatulli, Giuseppe (2019): Estimating nitrogen and phosphorus concentrations in streams and rivers across the Contiguous United States. PANGAEA,, Supplement to: Shen, Longzhu; Amatulli, Giuseppe; Sethi, Tushar; Raymond, Peter; Domisch, Sami (in press): Estimating nitrogen and phosphorus concentrations in streams and rivers across the contiguous United States: a machine learning framework. PeerJ,

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Nitrogen (N) and Phosphorus (P) are essential nutrients for life processes in water bodies but in excessive quantities, they are a significant source of aquatic pollution. Eutrophication has now become widespread due to such an imbalance, and is largely attributed to anthropogenic activity. In view of this phenomenon, we present a new dataset and statistical method for estimating and mapping elemental and compound concentrations of N and P at a resolution of 30 arc-seconds (~1 km) for the conterminous US. The model is based on a Random Forest (RF) machine learning algorithm that was fitted with environmental variables and seasonal N and P concentration observations from 230,000 stations spanning across US stream networks. Accounting for spatial and temporal variability offers improved accuracy in the analysis of N and P cycles. The algorithm has been validated with an internal and external validation procedure that is able to explain 70-83% of the variance in the model. The dataset is ready for use as input in a variety of environmental models and analyses, and the methodological framework can be applied to large-scale studies on N and P pollution, which include water quality, species distribution and water ecology research worldwide.
aquatic pollution; eutrophication; hypertrophication; machine learning; nitrogen; nutrient mapping; nutrients; phosphorus; random forest; stream; water quality
Median Latitude: 37.950000 * Median Longitude: -102.300000 * South-bound Latitude: 27.700000 * West-bound Longitude: -123.800000 * North-bound Latitude: 48.200000 * East-bound Longitude: -80.800000
USA_cont * Latitude Start: 48.200000 * Longitude Start: -123.800000 * Latitude End: 27.700000 * Longitude End: -80.800000 * Location: United States of America
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1File contentContentAmatulli, Giuseppe
2File nameFile nameAmatulli, Giuseppe
3File formatFile formatAmatulli, Giuseppe
4File sizeFile sizekByteAmatulli, Giuseppe
5Uniform resource locator/link to fileURL fileAmatulli, Giuseppe
100 data points

Download Data

Download dataset as tab-delimited text (use the following character encoding: )

View dataset as HTML