Status: 

Completed

Title

Lotic Intersite Nitrogen eXperiment I (LINX1): Stream nitrogen (N) dynamics in streams on the eastern side of Puerto Rico
Summary

Short name: 

LUQMetadata176

Data set ID: 

176

Abstract: 

This study was part of the Lotic Intersite Nitrogen eXperiment (LINX); a series of identical 15NH4 tracer additions to streams throughout North America. 15NH4Cl was added at tracer levels to a Puerto Rican stream for 42 days. Samples were collected from selected food web and dissolved nitrogen compartments throughout the addition and for several weeks afterwards to determine the uptake, retention and transformation pathways of nitrogen in the stream.

Dates
Date Range: 
1998-01-15 00:00:00 to 1998-03-19 00:00:00

Publication Date: 

2012-05-22 00:00:00
People

Additional Project roles: 

Name: Eda Melendez-Colom Role: Data Manager
Name: Alan Covich Role: Associated Researcher
Name: Todd Crowl Role: Associated Researcher
Name: P.M. Mulholland Role: Associated Researcher
Name: Wilfred M Wollheim Role: Associated Researcher
Name: Jennifer L. Tank Role: Associated Researcher
Name: C.L. Crenshaw Role: Associated Researcher
Name: Sherri L. Johnson Role: Associated Researcher
Methodology

Methods: 

A solution of 15NH4Cl was added to Quebrada Bisley 3 for 42 days & the stream was sampled at several stations along a 142 meter reach for water & biotic N uptake & transformation. Uptake rates were calculated from the decline of 15N along the reach, corrected for dilution using Cl. Samples were filtered, frozen, & then shipped to the University of New Hampshire for chemistry and the Marine Biological Lab for isotope analysis.

Instrumentation: 

Dionex ion chromatograph

Shimadzu total organic carbon analyzer

Lachat flow-injection colorimetric analyzer

YSI chemical dissolved oxygen probe

Mass Spectrophotometer

Quality Assurance: 

Data was collected and calculations were done byt Jeff Merriam at the University of New Hampshire & then verified by Jennifer Tank at Virginia Tech University

Status: 

Completed

Time Period: 

Short-Term
Categories