Data Package Metadata View Summary

Baltimore Ecosystem Study: Stream chemistry for Gwynns Falls Upper Tributaries

General Information

Data Package:
Local Identifier:	knb-lter-bes.800.450
Title:	Baltimore Ecosystem Study: Stream chemistry for Gwynns Falls Upper Tributaries
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	In the Baltimore urban long-term ecological research (LTER) project, (Baltimore Ecosystem Study, BES) we use the watershed approach to evaluate integrated ecosystem function. The LTER research is centered on the Gwynns Falls watershed, a 17,150 ha catchment that traverses a gradient from the urban core of Baltimore, through older urban residential (1900 - 1950) and suburban (1950- 1980) zones, rapidly suburbanizing areas and a rural/suburban fringe. Our long-term sampling network includes four longitudinal sampling sites along the Gwynns Falls as well as several small (40 - 100 ha) watersheds located within or near to the Gwynns Falls. The longitudinal sites provide data on water and nutrient fluxes in the different land use zones of the watershed (rural/suburban, rapidly suburbanizing, old suburban, urban core) and the small watersheds provide more focused data on specific land use areas (forest, agriculture, rural/suburban, urban). Each of the gaging sites is continuously monitored for discharge and is sampled weekly for chemistry. Additional chemical sampling is carried out in a supplemental set of sites to provide a greater range of land use. Weekly analyses includes nitrate, phosphate, total nitrogen, total phosphorus, chloride and sulfate, total suspended solids, turbidity, fecal coliforms, temperature, dissolved oxygen and pH. Cations, dissolved organic carbon and nitrogen and metals are measured on selected samples. This dataset presents stream chemistry from the Upper Gwynns Falls tributaries. From April 1999 to August 2000 Johns Hopkins University graduate student Mark Colosimo sampled a group of sites in the Upper Gwynns Falls (Red Run, Horsehead Branch, Scotts Level Branch, Holly Branch). There were two sites in the Red Run drainage. This watershed drains approximately 19 km2 and has been rapidly suburbanizing since the early 1990s. Percent impervious surface was approximately 10% as of 2002. Sampling station Red Run 1 (RR1) was approximately 35 m upstream of the crossing of Painters Mill Bridge Road, and 350 m upstream of the confluence with the Gwynns Falls. Sampling station Red Run 2 (RR2) was farther upstream, between the Pleasant Hill and Dolfield road crossings. There were two sites along Scotts Level Branch, an older suburban watershed which was approximately 25% impervious surface in 1970. Site SL1 drains approximately 11 km2 and is located at the outlet of the sub-watershed, just above the confluence with Gwynns Falls. Site SL2 is at the McDonogh Rd. bridge crossing. The Horsehead Branch (HH) sampling site was located at the McDonogh Road crossing. It drains approximately 5 km2 that has undergone rapid urbanization since the mid 1980s. As of 1997 percent impervious surface was approximately 12%. The Holly Bank (HB) sampling site was located just upstream of Gwynnbrook Ave. Seventy percent of land in this drainage is classified residential. The Gwynns Falls at McDonogh (GF5) site was located at the McDonogh school / McDonogh road crossing of the Gwynns Falls and samples a drainage area of approximately 51 km2, with approximately 20% impervious surface.
Publication Date:	2020-07-02

Time Period

Begin:

1999-08-01

End:

2012-04-23

People and Organizations
Contact:	Cary Institute of Ecosystem Studies [ email ]
Creator:	Groffman, Peter M (Cary Institute of Ecosystem Studies)
Creator:	Rosi, Emma (Cary Institute of Ecosystem Studies)
Creator:	Martel, Lisa D (Cary Institute of Ecosystem Studies)

Data Entities
Data Table Name:	BES_stream_chemistry_UpperGwynnsFallsTributaries
Description:	BES stream chemistry Upper Gwynns Falls Tributaries

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bes/800/450/d4cc89c59727490cc65ee819da720cf3
Name:	BES_stream_chemistry_UpperGwynnsFallsTributaries
Description:	BES stream chemistry Upper Gwynns Falls Tributaries
Number of Records:	491
Number of Columns:	8

Table Structure

Object Name:

BES_stream_chemistry_UpperGwynnsFallsTributaries.csv

Size:

21583 bytes

Authentication:

9d2dd9136ac1a4e269a5fd6886b853ad 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:

date

site

chloride

nitrate

nitrogen_total

phosphorus_total

phosphate

sulfate

Definition:

Date

Sampling Site

Concentration of Chlorine

Concentration of Nitrate; milligrams of N as Nitrate per liter

Total Nitrogen Concentration

Total Phosphorus

Phopshate concentration ug/L; micrograms of P as Phosphate per liter

Sulfate concentration

Storage Type:

date

string

float

Measurement Type:

dateTime

nominal

ratio

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	RR1
Definition	Red Run at Painters Mill Bridge Road,Suburban
Source

Code Definition

Code	RR2
Definition	Red Run at Painters Mill Bridge Road,Suburban
Source

Code Definition

Code	SL1
Definition	Scotts Level Branch at Gwynns Falls,Suburban
Source

Code Definition

Code	SL2
Definition	Scotts Level Branch at McDonogh Road,Suburban
Source

Code Definition

Code	HH
Definition	Horsehead Branch at McDonogh Road,Suburban
Source

Code Definition

Code	HLB
Definition	Holly Branch at Gwynnbrook Avenue,Suburban
Source

Code Definition

Code	GF5
Definition	Gwynns Falls at McDonogh Road,Suburban
Source

Unit	milligramsPerLiter
Type	real
Min	5.1
Max	668.4

Unit	milligramsPerLiter
Type	real
Min	0.16
Max	3.58

Unit	milligramsPerLiter
Type	real
Min	0.5
Max	3.94

Unit	microgramsPerLiter
Type	real
Min	1.5
Max	107.2

Unit	microgramsPerLiter
Type	real
Min	0.7
Max	94.7

Unit	microgramsPerLiter
Type	real
Min	2.9
Max	20.7

Missing Value Code:

Code	-999.99
Expl	data not available

Code	-999.99
Expl	data not available

Code	-999.99
Expl	data not available

Code	-999.99
Expl	data not available

Code	-999.99
Expl	data not available

Code	-999.99
Expl	data not available

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data (\"Data User\" herein) is required 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 co-authorship 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	streams, watersheds, nitrate, phosphate, nitrogen, phosphorus, chloride, sulfate, stage height, temperature, oxygen, pH, turbidity
BES Vocabulary	Baltimore Ecosystem Study, clarity, ecoli, Baltimore, MD, Chesapeake Bay, Maryland, LTER, BES
ISO 19115 Topic Category	environment

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:

Samples were collected weekly at an established sampling location at each station. Sampling locations were chosen based on adequate concentration of flow, proximity to weir and staff gage, and low vulnerability to disturbance. Samples were collected and stored in polyethylene bottles.

Weekly analyses included nitrate, phosphate, total nitrogen, total phosphorus, chloride and sulfate.

Samples for anion and cation analysis were filtered (0.45 micron).

Every six weeks, samples were shipped to the Cary Institute of Ecosystem Studies (CIES) for anion, cation, TN, and TP analysis.

One blank from the laboratory distilled water source was prepared each week and stored along with the samples. Spike analysis was done as part of the routine long-term BES stream sampling and analysis. Samples were stored at 4 degrees C.

Concentrations of nitrate, chloride and sulfate were analyzed on a Dionex LC20 series ion chromatograph. Concentrations of phosphate were analyzed on a Lachat Quikchem 8000 flow injection analyzer.

Total nitrogen and phosphorus were analyzed by persulfate digestion followed by analysis of nitrate and phosphate on a Lachat Quikchem 8000 flow injection analyzer. If the value for total N was more than 0.10 mg N L-1 less than nitrate-N, the total N value for that sample was set to the nitrate value. If the value for total P was more than 0.01 mg P L-1 less than the phosphate P, the total P value for that sample was set to the phosphate value.

People and Organizations

Creators:

Individual:

Peter M Groffman

Organization:

Cary Institute of Ecosystem Studies

Email Address:

groffmanp@caryinstitute.org

Id:

https://orcid.org/0000-0001-8371-6255

Individual:

Emma Rosi

Organization:

Cary Institute of Ecosystem Studies

Email Address:

rosie@caryinstitute.org

Id:

https://orcid.org/0000-0002-3476-6368

Individual:

Lisa D Martel

Organization:

Cary Institute of Ecosystem Studies

Email Address:

martell@caryinstitute.org

Id:

https://orcid.org/0000-0002-0156-4954

Contacts:

Organization:

Cary Institute of Ecosystem Studies

Email Address:

besim@caryinstitute.org

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1999-08-01

End:

2012-04-23

Geographic Region:

Description:

Baltimore City

Bounding Coordinates:

Northern:	39.373	Southern:	39.196
Western:	-76.712	Eastern:	-76.528

Project

Parent Project Information:

Title:

Urban LTER: Human Settlements as Ecosystems: Metropolitan Baltimore from 1797-2100

Personnel:

Individual:

Steward Pickett

Organization:

Baltimore Ecosystem Study

Email Address:

picketts@caryinstitute.org

Id:

https://orcid.org/0000-0002-1899-976x

Role:

Principal Investigator

Funding:

NSF 9714835

Related Project:

Title:

LTER: Human Settlements as Ecosystems: Metropolitan Baltimore from 1797-2100: Phase II

Personnel:

Individual:

Steward Pickett

Organization:

Baltimore Ecosystem Study

Email Address:

picketts@caryinstitute.org

Id:

https://orcid.org/0000-0002-1899-976x

Role:

Principal Investigator

Funding:

NSF 423476

Related Project:

Title:

LTER: Baltimore Ecosystem Study Phase III: Adaptive Processes in the Baltimore Socio-Ecological System from the Sanitary to the Sustainable City

Personnel:

Individual:

Steward Pickett

Organization:

Baltimore Ecosystem Study

Email Address:

picketts@caryinstitute.org

Id:

https://orcid.org/0000-0002-1899-976x

Role:

Principal Investigator

Funding:

NSF 1027188

Maintenance

Maintenance:

Description:	complete
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'nephelometricTurbidityUnit'
        |     |     |     |  \___attribute 'name' = 'nephelometricTurbidityUnit'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'Turbidity unit of nephelometric turbidity unit (NTU)'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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Data Package Metadata View Summary

Baltimore Ecosystem Study: Stream chemistry for Gwynns Falls Upper Tributaries

Data Entities

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

Project

Parent Project Information:

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Baltimore Ecosystem Study: Stream chemistry for Gwynns Falls Upper Tributaries

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Data Table

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

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Methods and Protocols

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