Data Package Metadata View Summary

Water-quality monitoring in Tempe Town Lake, Tempe, AZ, ongoing since 2005

General Information

Data Package:
Local Identifier:	knb-lter-cap.630.2
Title:	Water-quality monitoring in Tempe Town Lake, Tempe, AZ, ongoing since 2005
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	Constructed in 1997, the Tempe Town Lake is a small man-made reservoir that transforms a section of the typically-dry Salt River bed into a 224-acre lake in the heart of Tempe, Arizona. To accommodate the river when it flows, the lake features hydraulically-operated steel gates that allow water to pass through the system unimpeded. The lake has been a remarkable success as a community amenity and as a driver of economic growth in the area around the lake. The lake provides an ideal model system for the many artificial lakes constructed in arid-land cities owing to management decisions, such as draining, that affect their operation and ecology. At the same time, dramatic shifts in hydrology and chemistry when the lake is transformed to a flowing river and back into a lake during and after floods, provide opportunities to study the system's dynamic evolution to new limnological steady states. The CAP LTER has been measuring water quality, including temperature, pH, conductivity, and dissolved oxygen, dissolved organic carbon (DOC), and total dissolved nitrogen (TDN), in the lake since 2005.
Publication Date:	2020-08-27

Time Period

Begin:

2005-01-05

End:

2020-02-26

People and Organizations
Contact:	Information Manager (Central Arizona–Phoenix LTER) [ email ]
Creator:	Hartnett, Hilairy (Arizona State University)

Data Entities
Data Table Name:	630_ttl_carbon_nitrogen_cec5d4dfecd875b503868bf9d6c90ec4.csv
Description:	long-term record of carbon and nitrogen concentrations in Tempe Town Lake, AZ as measured by the H. Hartnett Laboratory at Arizona State University
Data Table Name:	630_ttl_meter_data_9d86421e8e4b556bed5a7797c5a4875f.csv
Description:	water-quality measurements collected with hand-held field meters and by titration in Tempe Town Lake, AZ as measured by the H. Hartnett Laboratory at Arizona State University

Detailed Metadata

Data Entities

Data Table

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-cap/630/2/5bc3038dce7668e00ea101ce94cc3bbf

Name:

630_ttl_carbon_nitrogen_cec5d4dfecd875b503868bf9d6c90ec4.csv

Description:

long-term record of carbon and nitrogen concentrations in Tempe Town Lake, AZ as measured by the H. Hartnett Laboratory at Arizona State University

Number of Records:

1199

Number of Columns:

Time Period

Begin:

2005-01-05

End:

2020-02-11

Table Structure

Object Name:

630_ttl_carbon_nitrogen_cec5d4dfecd875b503868bf9d6c90ec4.csv

Size:

74768 bytes

Authentication:

cec5d4dfecd875b503868bf9d6c90ec4 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

sampling_date

sampling_time

DOC

DOC_error

TN_error

replicate

field_notes

Definition:

date of data collection

time of data collection

dissolved organic carbon (DOC) concentration

DOC error calculated as standard deviation of replicate samples

total dissolved nitrogen (TDN) concentration

TDN error calculated as standard deviation of replicate samples

sample replicate number if multiple measurements were made

comments by field investigator regarding sample collection or processing

Storage Type:

date

float

string

Measurement Type:

dateTime

ratio

nominal

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Format	hh:mm:ss
Precision

Unit	milligramsPerLiter
Type	real
Min	0.22
Max	20.29

Unit	milligramsPerLiter
Type	real
Min	-0.14
Max	0.47

Unit	milligramsPerLiter
Type	real
Min	0.09
Max	1.64

Unit	milligramsPerLiter
Type	real
Min	0
Max	0.3

Definition

sample replicate number if multiple measurements were made

Definition

comments by field investigator regarding sample collection or processing

Missing Value Code:

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-cap/630/2/f39bd263f775dbaec05ca7b50da1768c

Name:

630_ttl_meter_data_9d86421e8e4b556bed5a7797c5a4875f.csv

Description:

water-quality measurements collected with hand-held field meters and by titration in Tempe Town Lake, AZ as measured by the H. Hartnett Laboratory at Arizona State University

Number of Records:

1156

Number of Columns:

Time Period

Begin:

2005-01-05

End:

2020-02-26

Table Structure

Object Name:

630_ttl_meter_data_9d86421e8e4b556bed5a7797c5a4875f.csv

Size:

86083 bytes

Authentication:

9d86421e8e4b556bed5a7797c5a4875f Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

sampling_date

sampling_time

temperature

conductance

dissolved_oxygen

alkalinity

bicarbonate

turbidity

sediment_load

field_notes

Definition:

date of data collection

time of data collection

temperature of the lake measured in degrees Celsius by hand held meter in the field

pH of the lake measured by hand held meter in the field

conductivity of the lake in microSiemens/cm measured by hand held meter in the field

dissolved oxygen of the lake measured by hand held meter in the field

ability to neutralize an acid in mg/L as CaCO3

the first end point for the alkalinity titration in mg/L as CaCO3

lack of clarity of the lake water

amount of sediment retained on filter after a known volume is filtered

comments by field investigator regarding sample collection or processing

Storage Type:

date

float

string

Measurement Type:

dateTime

ratio

nominal

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Format	hh:mm:ss
Precision

Unit	celsius
Type	real
Min	9.5
Max	37.8

Unit	dimensionless
Type	real
Min	0.98
Max	10.54

Unit	microsiemenPerCentimeter
Type	real
Min	180.4
Max	1891

Unit	milligramsPerLiter
Type	real
Min	0.65
Max	1045

Unit	milligramsPerLiter
Type	real
Min	21.7
Max	191

Unit	milligramsPerLiter
Type	real
Min	0.7869
Max	2.8852

Unit	nephelometricTurbidityUnit
Type	real
Min	3.62
Max	382

Unit	gramsPerLiter
Type	real
Min	0.000534
Max	0.3541

Definition

comments by field investigator regarding sample collection or processing

Missing Value Code:

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Code	NA
Expl	missing value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Package Usage Rights

This data package is released to the "public domain" under Creative Commons CC0 1.0 "No Rights Reserved" (see: https://creativecommons.org/publicdomain/zero/1.0/). The consumer of these data ("Data User" herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or coauthorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
LTER controlled vocabulary	urban, long term, long term monitoring, dissolved organic carbon, dissolved oxygen, conductivity, water quality, water temperature, lakes, carbon, alkalinity, bicarbonate, turbidity, sediments, ph, total dissolved nitrogen
LTER core areas	movement of organic matter, movement of inorganic matter, water and fluxes, parks and rivers
Creator Defined Keyword Set	time-series
CAPLTER Keyword Set List	cap lter, cap, caplter, central arizona phoenix long term ecological research, arizona, az, tempe, arid land

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

# overview Water sampling from the south side of Tempe Town Lake at a depth of ~ 1 meter. We make *in situ* measurements of water quality parameters (pH, Temp, O2, Conductivity) and collect samples for analysis of dissolved organic carbon/total nitrogen in the laboratory. # pH Measured in the field with hand-held YSI or Thermo-Orion sensors. Sensors are calibrated each day with a 3-point calibration curve (pH = 4, 7, 10). # conductivity Measured in the field with a handheld Orion conductivity sensor. Sensor is calibrated each day with a one-point, 1000 microSieman conductivity solution. Values in microSiemans (temperature compensated). # dissolved oxygen Measured in the field with a hand-held YSI sensor. Sensor is altitude compensated and calibrated relative to an air saturated water solution each day. Values in mg O2/L. # temperature Measured by each of the above sensors. Values in degrees Celsius. # water collection and filtration Water samples are collected into 1L Nalgene bottles that are rinsed 3x with lake water before collection. Samples are collected below the surface and an effort is made to exclude floating debris. Samples are immediately transported to the lab for filtration. Samples are filtered through GF/F filters on a vacuum manifold. Samples are collected in an ashed (450°C) flask and distributed in to centrifuge tubes for storage until analysis. # sample storage Polypropylene centrifuge tubes (VWR) are rinsed with deionized water and leached for 48 hours prior to use. Filtered samples for dissolved organic carbon analysis are acidified to pH<2 with HCl and stored in the dark at 4 deg C until analysis. Every effort is made to analyze samples within 1 month of collection. # dissolved organic carbon/total nitrogen analysis Dissolved organic carbon concentration was measured using a Shimadzu TOC-V carbon analyzer where samples are combusted at 680°C in an oxygen-rich environment with a platinized-alumina catalyst to convert all carbon in the sample to carbon dioxide gas. Dissolved organic carbon is detected as CO2(g) by a non-dispersive infra-red gas analyzer. Total nitrogen is detected from the same analysis as NO using a chemiluminescence nitrogen detector. The instrument is calibrated daily with a 5-point calibration curve for carbon and nitrogen, and quality check standards are evaluated with each run. # alkalinity and bicarbonate Determined by Gran titration with hydrochloric acid. # turbidity Measured with a Hach turbidity meter in normalized turbidity units # suspended sediment Determined by mass. One liter of water was filtered onto GF/F filter (25 mm); filter was dried at 60 deg C and weighed to determine mass of sediment.

People and Organizations

Publishers:

Organization:

Central Arizona–Phoenix LTER

Address:

Arizona State University,

Global Institute of Sustainability,

Tempe, AZ 85287-5402 USA

Creators:

Individual:

Hilairy Hartnett

Organization:

Arizona State University

Email Address:

H.Hartnett@asu.edu

Id:

https://orcid.org/0000-0003-0736-7844

Contacts:

Organization:

Central Arizona–Phoenix LTER

Position:

Information Manager

Address:

Arizona State University,

Global Institute of Sustainability,

Tempe, AZ 85287-5402 USA

Email Address:

caplter.data@asu.edu

Web Address:

https://sustainability.asu.edu/caplter/

Metadata Providers:

Individual:

Hilairy Hartnett

Organization:

Arizona State University

Email Address:

H.Hartnett@asu.edu

Id:

https://orcid.org/0000-0003-0736-7844

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

2005-01-05

End:

2020-02-26

Geographic Region:

Description:

CAP LTER study area

Bounding Coordinates:

Northern:	33.437	Southern:	33.43
Western:	-111.949	Eastern:	-111.91

Temporal, Geographic and/or Taxonomic information that applies to Data Table: 630_ttl_carbon_nitrogen_cec5d4dfecd875b503868bf9d6c90ec4.csv

Time Period

Begin:

2005-01-05

End:

2020-02-11

Temporal, Geographic and/or Taxonomic information that applies to Data Table: 630_ttl_meter_data_9d86421e8e4b556bed5a7797c5a4875f.csv

Time Period

Begin:

2005-01-05

End:

2020-02-26

Project

Parent Project Information:

Title:

Central Arizona–Phoenix Long-Term Ecological Research Project

Personnel:

Individual:

Daniel Childers

Organization:

Arizona State University

Email Address:

dan.childers@asu.edu

Id:

https://orcid.org/0000-0003-3904-0803

Role:

Principal Investigator

Individual:

Nancy Grimm

Organization:

Arizona State University

Email Address:

nbgrimm@asu.edu

Id:

https://orcid.org/0000-0001-9374-660X

Role:

Co-principal Investigator

Individual:

Sharon Hall

Organization:

Arizona State University

Email Address:

sharonjhall@asu.edu

Id:

https://orcid.org/0000-0002-8859-6691

Role:

Co-principal Investigator

Individual:

Billie Turner II

Organization:

Arizona State University

Email Address:

Billie.L.Turner@asu.edu

Id:

https://orcid.org/0000-0002-6507-521X

Role:

Co-principal Investigator

Individual:

Abigail York

Organization:

Arizona State University

Email Address:

Abigail.York@asu.edu

Id:

https://orcid.org/0000-0002-2313-9262

Role:

Co-principal Investigator

Abstract:

Phase IV of the Central Arizona-Phoenix LTER (CAP) continues to focus on the question: How do the ecosystem services provided by urban ecological infrastructure (UEI) affect human outcomes and behavior, and how do human actions affect patterns of urban ecosystem structure and function and, ultimately, urban sustainability and resilience? The overarching goal is to foster social-ecological urban research aimed at understanding these complex systems using a holistic, ecology of cities perspective while contributing to an ecology for cities that enhances urban sustainability and resilience. This goal is being met through four broad programmatic objectives: (1) use long-term observations and datasets to articulate and answer new questions requiring a long-term perspective; (2) develop and use predictive models and future-looking scenarios to help answer research questions; (3) employ existing urban ecological theory while articulating new theory; and (4) build transdisciplinary partnerships to foster resilience and enhance sustainability in urban ecosystems while educating urban dwellers of all ages and experiences. CAP IV research is organized around eight interdisciplinary questions and ten long-term datasets and experiments, and researchers are organized into eight Interdisciplinary Research Themes to pursue these long-term research questions.

Funding:

NSF Awards: CAP I: DEB-9714833, CAP II: DEB-0423704, CAP III: DEB-1026865, CAP IV: DEB-1832016

Additional Award Information:

Funder:

National Science Foundation

Funder ID:

https://ror.org/021nxhr62

Number:

1832016

Title:

LTER: CAP IV - Investigating urban ecology and sustainability through the lens of Urban Ecological Infrastructure

URL:

https://nsf.gov/awardsearch/showAward?AWD_ID=1832016&HistoricalAwards=false

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'microsiemenPerCentimeter'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.000001'
        |     |     |     |  \___attribute 'name' = 'microsiemenPerCentimeter'
        |     |     |     |  \___attribute 'parentSI' = 'siemen'
        |     |     |     |  \___attribute 'unitType' = 'conductance'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'electric conductance of lake water in the units of microsiemenPerCentimeter'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'nephelometricTurbidityUnit'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'nephelometricTurbidityUnit'
        |     |     |     |  \___attribute 'parentSI' = 'unknown'
        |     |     |     |  \___attribute 'unitType' = 'unknown'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text '(NTU) ratio of the amount of light transmitted straight through a water sample with the amount scattered at an angle of 90 degrees to one side'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

Water-quality monitoring in Tempe Town Lake, Tempe, AZ, ongoing since 2005

Data Entities

Data Table

Data Table

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to Data Table: 630_ttl_carbon_nitrogen_cec5d4dfecd875b503868bf9d6c90ec4.csv

Temporal, Geographic and/or Taxonomic information that applies to Data Table: 630_ttl_meter_data_9d86421e8e4b556bed5a7797c5a4875f.csv

Project

Parent Project Information:

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Water-quality monitoring in Tempe Town Lake, Tempe, AZ, ongoing since 2005

+/- Data Entities

Data Table

Data Table

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to Data Table: 630_ttl_carbon_nitrogen_cec5d4dfecd875b503868bf9d6c90ec4.csv

Temporal, Geographic and/or Taxonomic information that applies to Data Table: 630_ttl_meter_data_9d86421e8e4b556bed5a7797c5a4875f.csv

+/- Project

Parent Project Information:

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Additional Metadata