U.S. Geological Survey, National Wetlands Research Center, 2002, Interactive effects of climate change and fire on bird communities - Point count data.
U.S.Geological Survey, National Wetlands Research Center
c/o Wylie C. Barrow, Jr.
Wildlife Biologist
700 Cajundome Blvd
Lafayette, LA 70506
USA
337 266-8668 (voice)
337 266-8592 (FAX)
wylie_barrow@usgs.gov
To assess the interactive effects of climate change and fire on the capacity of the Trans-Pecos Region to support bird communities.
Standard, 20 minute, unlimited distance point counts were conducted at 70 sampling sites. Sites were located using systematic sampling within a random start. Each site was sampled once every nine days from mid-December to late February.
U.S. Geological Survey, National Wetlands Research Center, 2002, Interactive effects of climate change and fire on bird communities: GIS measurements.
U.S. Geological Survey, National Wetlands Research Center, 2002, Interactive effects of climate change and fire on bird communities: landcover map.
The accuracy of the bird point count data is based on the experience of the observers. All data entry was double checked for potential errors.
Data was omitted when collection conditions (i.e. fog) compromised data accuracy. Only 3 counts were omitted out of the 1120 counts conducted over the first two field seasons.
All sites were established 4km apart and at least 400m from a paved or dirt road. The sites were visited nine days. Point counts began at 30 minutes before offical sunrise and the final count of the day was completed with 5.5 hours after offical sunrise. Data was only collected when the air temperature was >0 degrees celsius and when the wind speed was <20 kmph. Data was checked throughout the field season to ensure that observers followed protocol.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This data will be available for public use after it has been published in peer-reviewed, scientific outlets.
- Use_Constraints:
- Acknowledgement of the National Wetlands Research Center as a data source would be appreciated in products developed from these data. Users should be aware of that comparisons with other data sets for the same area from other time periods may be inaccurate due to differences in data collection procedures.
Lori Randall
U.S. Geological Survey, National Wetlands Research Center
Biologist
700 Cajundome Blvd
Lafayette, LA 70506
USA
337 266-8665 (voice)
337 266-8592 (FAX)
lori_randall@usgs.gov