Location of leks and number of birds per lek are censused during late April and early May across Konza Prairie to document year to year densities of greater prairie chickens. This dataset is continued by CPC02 after 04/19/1999.
DOI: 10.6073/pasta/7ff75189178bd7b755453c726529a9c5 (Published on EDI/LTER Data Portal, to cite this dataset see example on the data portal.)
Locate and enumerate the number of lekking males.
Location of Sampling Stations: Transect 1: Northward along trail from the fireguard on the east side of 020D (grid X-28), then westward on the main ridge trail (U-23 to G-26), then northward to the site manager's house (D-16). Transect 2: Northward, then eastward on the trail starting just north of the Hokanson house (H-15), eventually moving southward on the margin of Campbell pasture to junction with main ridge trail (U-23).
Frequency of Sampling: Each transect is run twice in the period from mid-April to early May, the first time in one direction and the second time in the opposite direction.
Variable Measured: Location of leks and the number of birds flushed from the lek when it is approached by the observer.
Methods: At the beginning and end of transect, environmental conditions are recorded: temperature, wind speed, sky cover, and hours since the last rainfall if less than 12 hours. The investigator then drives the transect in the proper direction, stopping and listening for sounds of lekking prairie chickens. The grid square (estimated to tenths) of the lek is recorded and the investigator then walks toward the lek, records its exact location on a map if the lek has not been recorded previously, and counts the number of birds flushed. When the location of the lek has been recorded previously, the investigator walks to that site and counts flushed birds even if no lekking sounds are heard.
Survey Conditions and Equipment: Temperature - no restrictions Phase of moon - no restrictions; Precipitation - should not be conducted during rain; Wind - should not be conducted in winds exceeding 10 mph; Time of day - should be started between sunrise and 1 hr after sunrise.
Equipment: 7 x 50 mm binoculars hand anemometer Suunto azimuth liquid-filled compass (Model KB-14) Pocket thermometer; Aluminum tally board (E-14 for 8½ x 11 sheets of paper).
CAUTION: Field observer must have good hearing and be alert during early morning period.
Summary of All Changes:
1981-1982: Sampling was done twice: once in mid-March and once in late April, along four transects that were covered by walking.
1983: Transects were reduced to two (present) covered by jeep and data collected only during the present single period in late April or early May.
2009-2010: No data was collected.
For additional metadata information see: http://lter.konza.ksu.edu/sites/default/files/DC.pdf
For additional methods information see: http://lter.konza.ksu.edu/sites/default/files/MM.pdf