Ecosystem recovery following cessation of N addition . Year 1992 Aboveground biomass data

Metadata:

• Identification_Information
• Data_Quality_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Tilman, David

Publication_Date: 1994

Title:

Ecosystem recovery following cessation of N addition

. Year 1992 Aboveground biomass data

Geospatial_Data_Presentation_Form: tabular digital data

Series_Information:

Publication_Information:

Other_Citation_Details:

Contact info for data set originator: Tilman, David Address:Ecology Evolution and Behaviour Dept. University Of Minnesota Saint Paul, MN 55108 USA Phone:612-625-5740 Email address:tilman@umn.edu

Description:

Abstract:

This experiment was established on top of E002 in fields A and C. In the spring of 1992, 3 randomly chosen replicates of each nutrient treatment of experiment E002 were chosen to receive no more fertilizer. For a description of these plots, see E002. For a description of fertilizer added to E097, see file fertilization details. For a list of treatments, see the treatment layouts in file trmte97.

Purpose: N/A

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates_Times:

Beginning_Date: 1992

Ending_Date: 2006

Currentness_Reference: as it was at time of compilation

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Description_of_Geographic_Extent:

The Cedar Creek Natural History Area is located in Anoka and Isanti counties, approximately 30 miles north of Saint Paul, MN. CCNHA lies at the boundary between prairie and forest. It is a mosaic of uplands dominated by oak savanna, prairie, hardwood forest, pine forests,and abandoned agricultural fields and of lowlands comprised of ash and cedar swamps, acid bogs, marshes, and sedge meadows. Large tracts of the pre-agricultural ecosystems of the region are preserved within its boundaries, as is a successional chronosequence of more than 80 old fields of known history.

Bounding_Coordinates:

West_Bounding_Coordinate: -93.22445

East_Bounding_Coordinate: -93.16289

North_Bounding_Coordinate: 45.44138

South_Bounding_Coordinate: 45.384865

Keywords:

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Place_Keyword: Cedar Creek Natural History Area

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Access_Constraints:

Allow all to users: uid=CDR,o=lter,dc=ecoinformatics,dc=org

Allow read to users: public

Use_Constraints:

Code of Ethics and Rules for Use of Cedar Creek LTER and Related DataAs a condition for access to data provided by researchers of the Cedar Creek LTER, I, the data user, agrees to abide by the following code of ethics.I agree to notify the Cedar Creek LTER scientists who gathered data if I would like to use those data in any publication. I acknowledge that these data were gathered by Cedar Creek scientists because they had already perceived the importance of these data for a variety of scientific and societal issues. I will provide them with formal recognition that, at their discretion, may include co-authorship or acknowledgements on publications. I realize that the researchers who gathered these data may be using them for scientific analyses, papers or publications that are currently planned or in preparation, and that such activities have precedence over any that I might wish to prepare. In this case, my preparation of any work may be delayed, at the option of the Cedar Creek researchers involved, until their work is completed. Because it may be possible to misinterpret a data set if it is taken out of context, I will seek the assistance and opinion of those Cedar Creek researchers involved in the design of a study and the collection of the data as I analyze the data. Moreover, I realize that this computer data set is not complete, and it may contain errors. The complete data set includes extensive written documentation, which should be referenced to reduce the chance of errors in data and errors of interpretation.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Lyon, Stephanie

Contact_Organization: Cedar Creek LTER

Contact_Position: information manager

Address_Type: Mailing

Contact_Address:

Address: Ecology Evolution and Behaviour Dept. University Of Minnesota

Address: 100 Ecology Building

Address: 1987 Upper Buford Circle

City: Saint Paul

State_or_Province: MN

Postal_Code: 55108

Country: USA

Contact_Voice_Telephone: 612-625-5740

Contact_Facsimile_Telephone: 612-624-6777

Contact_Electronic_Mail_Address: dman@lter.umn.edu

Data_Quality_Information:

Logical_Consistency_Report: Not Applicable

Lineage:

Methodology:

methodtype: Method Type; field, lab, etc

methoddesc:

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

Object not found!

Methodology:

methodtype: Method Type; field, lab, etc

methoddesc:

Field Operations

Fencing

The plots in experiment E097 are enclosed by a fence to exclude mammalian herbivores. Galvanized welded-wire hardware cloth with 6mm x 6mm openings was buried to a depth of 84cm. Additional hardware cloth extends 60cm above the ground, and poultry netting extends to 1.8m above the ground. During the summer of 1986, aluminum flashing was placed in the ground to a depth of 12 inches. This flashing surrounds each plot in each field, keeping the plants from spreading between plots by belowground vegetative reproduction. The aluminum flashing is placed 12 inches from the edge of each plot.

Fertilization

Fertilizer is mixed and spread by hand twice a year, once in early May and once in late June. Each plot gets the fertilizer mixture specified by its fertilizer treatment code. For a list of fertilizer treatments for each plot, see file trmte02 . Starting in the spring of 1992, 3 replicates of each nutrient treatment in fields A and C were randomly selected to receive no more fertilizer. For a list of treatments for each plot, see file trmte97 .

Mammal Trapping

Small mammals are trapped as often as possible to keep the resident population low. A list of the number and kind of mammals taken from each field is in the small mammal documentation file. Pocket gophers are trapped out of the fields as soon as they appear. Gopher mounds are then removed and vegetation is unburied.

Methodology:

methodtype: Method Type; field, lab, etc

methoddesc:

Treatment layout : trmte97

Note: Old nitrogen treatment codes

1 = 0g/m 2 /yr Ammonium Nitrate

2 = 3g/m 2 /yr

3 = 6g/m 2 /yr

4 = 10g/m 2 /yr

5 = 16g/m 2 /yr

6 = 28g/m 2 /yr

7 = 50g/m 2 /yr

8 = 80g/m 2 /yr

9 = 0g/m 2 /yr

Treatment: 1 = Fertilized in the spring, 2 = Stop fertilizing

Field Identification Experiment Number Old N Treatment Code Plot Number Treatment

A 97 1 12 0

A 97 1 14 1

A 97 1 17 1

A 97 1 21 0

A 97 1 30 1

A 97 1 34 0

A 97 2 4 0

A 97 2 16 1

A 97 2 22 0

A 97 2 29 0

A 97 2 35 1

A 97 2 38 1

A 97 3 13 0

A 97 3 24 0

A 97 3 36 0

A 97 3 41 1

A 97 3 47 1

A 97 3 54 1

A 97 4 8 0

A 97 4 10 1

A 97 4 23 1

A 97 4 26 1

A 97 4 39 0

A 97 4 53 0

A 97 5 1 1

A 97 5 20 0

A 97 5 27 0

A 97 5 40 1

A 97 5 42 1

A 97 5 48 0

A 97 6 9 0

A 97 6 15 1

A 97 6 19 1

A 97 6 25 0

A 97 6 33 0

A 97 6 49 1

A 97 7 11 1

A 97 7 18 1

A 97 7 32 0

A 97 7 45 0

A 97 7 46 1

A 97 7 51 0

A 97 8 5 1

A 97 8 28 0

A 97 8 31 0

A 97 8 43 1

A 97 8 44 0

A 97 8 52 1

A 97 9 2 0

A 97 9 3 1

A 97 9 6 0

A 97 9 7 0

A 97 9 37 1

A 97 9 50 1

C 97 1 10 0

C 97 1 18 1

C 97 1 23 1

C 97 1 43 1

C 97 1 46 0

C 97 1 47 0

C 97 2 29 0

C 97 2 38 1

C 97 2 45 0

C 97 2 49 1

C 97 2 50 0

C 97 2 52 1

C 97 3 16 0

C 97 3 24 0

C 97 3 30 0

C 97 3 33 1

C 97 3 36 1

C 97 3 44 1

C 97 4 3 1

C 97 4 11 0

C 97 4 15 1

C 97 4 31 0

C 97 4 34 0

C 97 4 37 1

C 97 5 1 0

C 97 5 6 1

C 97 5 8 1

C 97 5 42 1

C 97 5 51 0

C 97 5 54 0

C 97 6 2 0

C 97 6 7 1

C 97 6 17 0

C 97 6 20 0

C 97 6 41 1

C 97 6 48 1

C 97 7 4 1

C 97 7 22 1

C 97 7 25 0

C 97 7 26 0

C 97 7 27 1

C 97 7 35 0

C 97 8 5 0

C 97 8 12 1

C 97 8 13 0

C 97 8 14 0

C 97 8 19 1

C 97 8 28 1

C 97 9 9 0

C 97 9 21 1

C 97 9 32 0

C 97 9 39 1

C 97 9 40 0

C 97 9 53 1

Methodology:

methodtype: Method Type; field, lab, etc

methoddesc:

Sampling :

1992: E097 was sampled as part of E002. For sampling documentation

see sampling for E002 .

1993: E097 was sampled as part of E002. For sampling documentation

see sampling for E002 .

Process_Step:

Process_Description: Read Methods description above if applies

Process_Date: Read method descriptions if applicable

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: pl92e97

Entity_Type_Definition: Aboveground biomass data

Entity_Type_Definition_Source: N/A

Attribute:

Attribute_Label: Field ::: Field

Attribute_Definition: Field name

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: Field name

Attribute:

Attribute_Label: expt ::: expt

Attribute_Definition: Experiment number

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: Experiment number

Attribute:

Attribute_Label: plot ::: plot

Attribute_Definition: plot number

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: plot number

Attribute:

Attribute_Label: ntrt ::: ntrt

Attribute_Definition: nitrogen treatment

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: nitrogen treatment

Attribute:

Attribute_Label: newfert ::: newfert

Attribute_Definition: new nitrogen treatment

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Range_Domain:

Attribute_Units_of_Measure: 0=stopfertilizing,1=continue

Attribute:

Attribute_Label: sdate ::: sdate

Attribute_Definition: Sampling date

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: Date timeYYMMDD

Attribute:

Attribute_Label: taxon ::: taxon

Attribute_Definition: Species Taxon code

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: Species Taxon code

Attribute:

Attribute_Label: species ::: species

Attribute_Definition: Species Name

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: Species Name

Attribute:

Attribute_Label: maxht ::: maxht

Attribute_Definition: Maximum plant height

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Range_Domain:

Attribute_Units_of_Measure: centimeter

Attribute:

Attribute_Label: medht ::: medht

Attribute_Definition: Median plant height

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Range_Domain:

Attribute_Units_of_Measure: centimeter

Attribute:

Attribute_Label: biomass ::: biomass

Attribute_Definition: Species Biomass

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Range_Domain:

Attribute_Units_of_Measure: gramsPerSquareMeter

Attribute:

Attribute_Label: prop ::: prop

Attribute_Definition: Species proportion of total biomass

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: Species proportion of total biomass

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: StephanieLyon

Contact_Organization: Cedar Creek LTER

Contact_Position: information manager

Contact_Address:

Address_Type: mailing

Address: Ecology Evolution and Behaviour Dept. University Of Minnesota

City: Saint Paul

State_or_Province: N/A

Postal_Code: 55108

Country: USA

Contact_Voice_Telephone: 612-625-5740

Contact_Voice_Telephone: N/A

Contact_Facsimile_Telephone: 612-624-6777

Contact_Electronic_Mail_Address: 612-625-5740

Resource_Description: knb-lter-cdr.799297.2

Distribution_Liability: distribution liability information is not available

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Metadata_Reference_Information:

Metadata_Date: 1994

Metadata_Review_Date: N/A

Metadata_Future_Review_Date: N/A

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Cedar Creek LTER

Contact_Address:

Address_Type: mailing

Address: Cedar Creek Natural History Area

City: Saint Paul

State_or_Province: N/A

Postal_Code: 55108

Country: USA

Contact_Voice_Telephone: 612-625-5740

Contact_Facsimile_Telephone: 612-624-6777

Contact_Electronic_Mail_Address: dman@lter.umn.edu

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Metadata_Standard_Version: 1999 Version (from Ecological Metadata Langualge 2.0.1)

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