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Exotic plant invasion alters nitrogen dynamics in an arid grassland

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Evans, R., R. Rimer, L. Sperry, and J. Belnap
Publication_Date: 2001
Title: Exotic plant invasion alters nitrogen dynamics in an arid grassland
Geospatial_Data_Presentation_Form: Journal article
Series_Information:
Series_Name: Ecological Applications
Issue_Identification: 11(5):1301-1310
Other_Citation_Details:
Science Information System Project #: 762

Publication Control #: 1077

Description:
Abstract:
The presence of unwanted weedy plants is a phenomenon experienced by almost all landowners. Unfortunately, the invasion of non-native (exotic) plant species throughout the United States has become a devastating and catastrophic problem in that different exotic plant species, having no natural competitors, have come to dominant and significantly change many natural ecosystems in the last decade. Invasive plant species may cause an imbalance in the way ecosystems function by altering the availability of nitrogen, which is a critical nutrient that plants need for growth. The authors, in collaboration with others at the University of Arkansas, quantified the effects that an invasive annual grass, cheatgrass (Bromus tectorum), had on the cycling of nitrogen in an arid grassland on the Colorado Plateau. The invasion of cheatgrass was found to significantly alter the amount of litter as well as the chemical composition of the litter compared to native vegetation. These changes in sites where cheatgrass was present had the result of significantly decreasing the amount of nitrogen readily available for native plants. Evidence suggests that in the long term, nitrogen loss will be greater in sites invaded by cheatgrass because of the increased fire frequency (fueled by cheatgrass litter) and greater amounts of nitrogen being lost to vapor during fires.
Purpose: Reporting research results
Supplemental_Information: Extent of item:9pp

Illustrative Matter: charts, figures

Time_Period_of_Content:
Time_Period_Information:
Single_Date_Time:
Calendar_Date: 2001
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent: Canyonlands National Park, Utah
Bounding_Coordinates:
West_Bounding_Coordinate: -110.1
East_Bounding_Coordinate: -109.68
North_Bounding_Coordinate: 38.55
South_Bounding_Coordinate: 37.95
Keywords:
Theme:
Theme_Keyword_Thesaurus: Science Information System Controlled Vocabulary
Theme_Keyword: Desert and Arid Lands
Theme_Keyword: Ecosystem Science
Theme_Keyword: Invasive Species
Theme_Keyword: Plants
Theme_Keyword: Grassland/Rangeland
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: denitrification enzyme activity
Theme_Keyword: desert vegetation
Theme_Keyword: ecosystem carbon
Theme_Keyword: ecosystem nitrogen
Theme_Keyword: grasslands
Theme_Keyword: litter
Theme_Keyword: changes in biomass and chemistry
Theme_Keyword: N mineralization
Theme_Keyword: plant-available N following plant invasion
Theme_Keyword: plant invasion
Theme_Keyword: litter quality
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Canyonlands National Park
Place_Keyword: Utah
Place_Keyword: UT
Taxonomy:
Keywords_Taxon:
Taxonomic_Keyword_Thesaurus: None
Taxonomic_Keywords: plants
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Plantae
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Magnoliophyta
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Liliopsida
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Cyperales
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Poaceae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Bromus
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Bromus tectorum
Applicable_Common_Name: cheatgrass
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Belnap, Jayne
Contact_Organization: Forest and Rangeland Ecosystem Science Center (FRESC)
Contact_Position: Station Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 2290 S. West Resource Blvd.
City: Moab
State_or_Province: UT
Postal_Code: 84532
Country: USA
Contact_Voice_Telephone: (435) 719-2333
Contact_Facsimile_Telephone: (435) 719-2300
Contact_Electronic_Mail_Address: jayne_belnap@usgs.gov
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Olendorff Library
Contact_Position: Librarian
Contact_Address:
Address_Type: mailing and physical address
Address: USGS FRESC Snake River Field Station

970 Lusk Street

City: Boise
State_or_Province: ID
Postal_Code: 83706
Country: USA
Contact_Voice_Telephone: 208 426-5218
Contact_Facsimile_Telephone: 208 426-5210
Resource_Description: Publication Control #: 1077
Distribution_Liability:
The USGS Forest and Rangeland Ecosystem Science Center and its research partners make every effort to provide and maintain accurate, complete, usable, and timely information. However, some USGS data and information may, of necessity, be preliminary in nature. These data and information are provided with the understanding that they are not guaranteed to be correct or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data and information. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user.

USGS-authored or produced data and information are in the public domain. Whereas the content of many USGS publications and other information resources are in the public domain, some USGS products contain material that is copyrighted by others and used by the USGS with permission. Users of this information may need to obtain permission from the copyright owner for other uses. Furthermore, some non-USGS data, products, and information referred to may be protected under U.S. and foreign copyright laws. Users may need to obtain permission from the copyright owner to acquire, use, reproduce, or distribute these materials. It is the sole responsibility of the user of the information to secure all necessary permission.

Standard_Order_Process:
Non_digital_Form:
Publications are available as reprints, reports, pamphlets, or brochures.
Fees: None
Ordering_Instructions: Request specific publications by reference number.
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Metadata_Reference_Information:
Metadata_Date: 20020520
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Olendorff Library
Contact_Position: Librarian
Contact_Address:
Address_Type: mailing and physical address
Address: USGS FRESC Snake River Field Station

970 Lusk Street

City: Boise
State_or_Province: ID
Postal_Code: 83706
Country: USA
Contact_Voice_Telephone: 208 426-5218
Contact_Facsimile_Telephone: 208 426-5210
Metadata_Standard_Name:
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001.1-1999
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