LUQ DATA SET METADATA

Completed

Data Files and Variables

Data File Identifier Data File Collected
LINX 1 uptake
text/csv iconLINX1uptake.csv
 01/15/1998 - 03/19/1998
LINX1 background
text/csv iconLINX1background.csv
 01/15/1998 - 02/27/1998
LINX 1 discharge
text/csv iconLINX1discharge.csv
 01/15/1998 - 03/19/1998

Measurements:

Date of collection
Time of measurement
Research Day Number
Stream discharge in liter per seconds

Project

176
Lotic Intersite Nitrogen eXperiment I (LINX1): Stream nitrogen (N) dynamics in streams on the eastern side of Puerto Rico

Research Sites:

Bisley Research Area Watershed 3

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.

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.

List of Publications:

N uptake as a function of concentration in streams
Inter-biome comparison of factors controlling stream metabolism
A cross-system comparison of bacterial and fungal biomass in detritus pools of headwater stream
Characterizing nitrogen dynamics, transport, and retention in a tropical rainforest stream using an in situ 15N addition
Can uptake length in streams be determined by nutrient addition experiments? Results from an inter-biome comparison study
Factors affecting ammonium uptake in streams - an inter-biome perspective. Freshwater Biology
Carbon and nitrogen stoichiometry and nitrogen cycling rates in streams
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

Owner:

William H. McDowell

Contact(s):

William H. McDowell
Jody Potter
Jeffrey Merriam

Associated:

Alan Covich
Todd Crowl
P.M. Mulholland
Wilfred M Wollheim
Jennifer L. Tank
C.L. Crenshaw
Sherri L. Johnson

Researcher's Keywords:

Luquillo
Puerto Rico
Greater Antilles
Caribbean
Sites
Sites Projects Programs
Methods
Methods Products
Fungi
Algae
Fungi algae lichens slime-molds bacteria
hydrology
hydraulics
Fields of ecology
Ecological phenomena processes
water chemistry
groundwater
Watershed cycles
seston
organic matter
Natural or anthropogenic materials
ecosystem processes
Global cycles
Biogeochemistry Controls
Biogeochemistry
Animals

LTER Vocab Keywords:

water column
freshwater
substrates
water
organic matter
inorganic matter
biological substances
substances
biological processes
biogeochemical processes
processes
seston
bacteria
microbes
lichens
fungi
animals
algae
organisms
field methods
methods
water properties
ecosystem properties
chemical properties
measurements
aquatic ecosystems
ecosystems
hydrology
ecology
chemistry
biology
biogeochemistry
disciplines

LTER Core Area(s):

inorganic nutrients

Complete Metadata:

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