USGS-BRD Dixon Field Station 20030101 vector digital data Published Transactions Western Section Wildlife Society http://bios.dfg.ca.gov ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/100_199/ds117.zip North-south flight paths of radio-tagged female northern pintails were monitored in a section of Highway 152 near Los Banos, California during 4 and 11 November and 9 December 1992 on their way from daytime roost sites in the north to nocturnal feeding sites in the south part of the Grassland Ecological Area. The dataset includes spatial and temporal information of 53 flight paths from 42 different pintails. Accuracy of individual data fields has been reviewed. Data collection is completed. References: Fleskes, J. P. 1999. Ecology of female northern pintails during winter in the San Joaquin Valley, California. Dissertation, Oregon State University, Corvallis, Oregon. Poster: http://www.werc.usgs.gov/dixon/pdfs/fleskes3940.jpg The purpose of this dataset is to identify important pintail flight corridors in the Grassland Ecological Area along Highway 152 where increased urbanization is projected, provide baseline flight path information necessary to evaluate impacts of future urbanization and other landscape changes, and provide insight into how urbanization and wetland habitat impact pintail flight paths. METHODS Highway 152 Zones I delineated 5 zones along Highway 152, using road intersections or waterways to mark the boundary between adjacent zones that contained different levels of urbanization. Listed from west-to-east, the zones were: 1) WEST, a 2.7-km zone from Volta Road to Los Banos Creek on the west border of Los Banos; 2) CITY, the 5.3-km Los Banos zone; 3) EASTCITY, a 1-km zone from Ward Road on the east border of Los Banos to San Luis Canal; 4) NEAREAST, a 1.3-km zone from San Luis Canal to Sante Fe Grade; 5) FAREAST, a 9.7-km zone from Sante Fe Grade to San Juan Road (Fig. 1). I used photographs that I took during October 1992 flights and a Geographic Information System to estimate urbanization, measured as the percent of each zone that had buildings within 100 m of Highway 152, and to estimate the distance from Highway 152 in each zone to the nearest flooded area. Pintail Flight Paths As part of a 3-year study of northern pintail wintering ecology, 58 Hatch-Year (HY) and 65 After-Hatch-Year (AHY) female pintails were captured, radiotagged, and released in the San Joaquin Valley, California during August and September, 1992 (Fleskes 1999). On 4 November, 11 November, and 9 December, 1992 (all hunting days with clear evenings and days, dates selected because work schedules permitted and numerous radiotagged pintails were flying daily to the SGL), I used truck-mounted directional antennae to determine (Fleskes 1999) the afternoon location of all radiotagged pintails that were present in the NGL and EGL. Technicians stationed in tracking vehicles at the borders of the 5 Highway 152 zones scanned for all radiotagged pintails until an hour after sunset and determined the zone over which each pintail that went to the SGL flew. I continued monitoring all birds, and when signal strength decreased and movement stopped for more than 1-2 minutes, I triangulated the initial landing location for those that landed in the SGL. I used the ARC/INFO (Environmental Systems Research Institute, Incorporated, Redlands, California, USA) computer program and a Geographic Information System with digitized maps to plot the NGL or EGL starting location and the SGL ending location. If the line connecting the starting and ending location crossed in the Highway 152 zone where I observed the pintail crossing, I assumed and plotted a direct flight line. If the line connecting the starting and ending location crossed outside the Highway 152 zone where I observed that the pintail crossed, I plotted a Highway 152 crossing point as the midpoint of the known crossing zone (except in one instance where I was able to determine the actual crossing location). 19920101 ground condition Complete None planned -120.891329 -120.609541 37.244349 36.940709 ISO 19115 Topic Category environment biota None Anas acuta telemetry northern pintail flight path locations None California Merced county Grassland Ecological Area Los Banos None nocturnal diurnal winter 1992 Current status is public domain, without restrictions. Positional accuracy of individual locations is limited by: uncertainty in telemetry locations (observer error) and possible data entry errors. Although, all reasonable attempts have been made to limit these factors, positional accuracy for any individual point should not necessarily be considered minimal. The appropriateness of multiple scales of inference, is the end-users responsibility to justify and the originators assume no responsibility for incorrect or misleading uses of this data. US Geological Survey - Biological Resources Discipline - Western Ecological Research Center Joseph P. Fleskes Research Biologist mailing and physical

6924 Tremont Road

Dixon Ca 95620 US 707-678-0682 707-678-5039 joe_fleskes@usgs.gov Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 Locations complete for all verifiable telemetry fixes. Single azimuth telemetry locations, anecdotal sightings, and incomplete spatial data are not included. Telemetry location determined through triangulation of signal bearings. Effect of error in triangulation determined in part by distance to bird and angle of bearing intersection. Location information generated using a modified version of XYLOG and UTMTEL programs for multiple azimuth geometry of intersecting bearings. Edited original metadata by adding ISO keywords. 20070718 California Department of Fish and Game Kristina White bios@dfg.ca.gov Vector String 64 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.000000003754707655900803 0.000000003754707655900803 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds117 SHAPE Feature geometry. ESRI Coordinates defining the features. DATE_ Location Date USGS 100% Selected entry by field personnel BIRD_ID Unique bird identifier based on unique partial radio frequency USGS 99% Selected entry by field personnel START_AREA Name of the daytime roost starting location USGS NglClub North Grassland Duck Club USGS SanLuisNWR San Luis National Wildlife Refuge USGS MercedNWR Merced National Wildlife Refuge USGS KestersonNWR Kesterson National Wildlife Refuge USGS LosBanosWA Los Banos State Wildlife Area USGS Sequential unique whole numbers that are automatically generated. 99% FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. HIGH_ZONE Five highway 152 zones near Los Banos delineated using road intersections or waterways USGS West From Volta Road to Los Banos Creek USGS City From Los Banos Creek to Ward Road USGS EastCity From Ward Road to San Luis Canal USGS NearEast From San Luis Canal to Sante Fe Grade USGS FarEast From Sante Fe Grade to San Juan Road Coordinates defining the features. 99% Delineated from USGS 1:24,000 Quadrangles. Crossing zone of pintails determined by field personnel stationed at borders of highway 152 zones so accuracy should be high. Shape Feature geometry. ESRI Coordinates defining the features. SHAPE_len The USGS Western Ecological Research 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. 20160229 US Geological Survey - Biological Resources Discipline - Western Ecological Research Center William Perry IT/GIS Specialist physical Dixon Ca 95620 US 707-678-0682 707-678-5039 william_perry@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time