Data Set Citation:
When using this data, please cite the data package:
NCEAS 9300 : Hurlbert: Exploring the Swiss Cheese Effect , National Center for Ecological Analysis and Synthesis , and Hurlbert A. 2006.
Geographic range occupancy of North American birds
nceas.291.1 (https://knb.ecoinformatics.org:443/knb/metacat/nceas.291.1/nceas)
General Information:
Title:Geographic range occupancy of North American birds
Identifier:nceas.291
Abstract:
Although the geographic range is a fundamental unit of analysis for many macroecological and biogeographical studies, as a representation of the spatial distribution of individuals it is clearly a scale-dependent abstraction. As any amateur naturalist realizes, a species is not guaranteed to be present at every point within the range delimited by a field guide. Geographically extensive survey data such as the North American Breeding Bird Survey (BBS) allow the characterization of distribution patterns within the geographic range. Using BBS data (http://www.pwrc.usgs.gov/bbs/) paired with digital range maps from NatureServe (http://www.natureserve.org/getData/birdMaps.jsp), I calculated a simple measure of range occupancy for 298 species of North American birds. Range occupancy is simply the fraction of sites on which a species is expected to occur based on its range map on which it is actually observed to occur.
Keywords:None:
  • occupancy (theme)
None:
  • birds (taxonomic)
None:
  • geographic range (theme)
None:
  • North America (place)
Publication Date:2006-07-31

Involved Parties

Data Set Creators:
Organization:NCEAS 9300 : Hurlbert: Exploring the Swiss Cheese Effect
Organization:National Center for Ecological Analysis and Synthesis
Individual: Allen Hurlbert
Organization:NCEAS
Address:
735 State Street, Suite 300,
Santa Barbara, California 93101 USA
Phone:
805.892.2523 (voice)
Phone:
805.892.2510 (Fax)
Email Address:
hurlbert@nceas.ucsb.edu
Data Set Contacts:
Individual: Allen Hurlbert
Organization:NCEAS
Address:
735 State Street, Suite 300,
Santa Barbara, California 93101 USA
Phone:
805.892.2523 (voice)
Phone:
805.892.2510 (Fax)
Email Address:
hurlbert@nceas.ucsb.edu
Metadata Providers:
Individual: Allen Hurlbert

Data Set Characteristics

Geographic Region:
Geographic Description:Continental United States and Canada
Bounding Coordinates:
West:  -180.0000   degrees
East:  -50.0000   degrees
North:  83.0000   degrees
South:  22.0000   degrees
Time Period:
Begin:
1993
End:
2002
Taxonomic Range:
General Coverage:David Sibley, The Sibley Guide to Birds, 2000
Classification:
Rank Name:Order
Rank Value:Aves

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

Calculating range occupancy

Geographic range maps were obtained from the NatureServe website at www.natureserve.com. For each species, range occupancy was calculated as the number of survey routes inside the boundary of the range on which a species was found to "occur" divided by the total number of survey routes inside the range. Species' occurrences outside of the geographic range were ignored.

Sampling Area And Frequency:
Temporal extent: A species was defined as being present, "occurring" at a site, if it was observed on at least one survey between 1993 and 2002. Spatial extent: All of the Breeding Bird Survey routes that were surveyed annually from 1993 to 2002 and that met basic BBS data quality standards (runtype=1 in BBS Weather file) were used to calculate range occupancy. Taxonomic extent: 298 terrestrial species that are reasonably well censused by BBS methodology. Raptors, owls, waterbirds, shorebirds, seabirds, ducks and geese were excluded.
Sampling Description:
na

Data Set Usage Rights

Obtain permission from data set owner(s)
Access Control:
Auth System:knb
Order:denyFirst
Metadata download: Ecological Metadata Language (EML) File