Bird Use of Imperial Valley Crops [ds427]

SDE Feature Class

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Tags
alfalfa, mountain plover, flood irrigation, Salton Sea, biota, lower Colorado River, agriculture, white-faced ibis, birds, long-billed curlew, California, environment, Bermuda grass, habitat, avian, crops, Imperial Valley, cattle egret, species


Summary

To detect, enumerate and describe habitat use of avian species in agricultural fields of the Imperial Valley.

Description

Agriculture crops in the Imperial Valley of California provide valuable habitat for many resident and migratory birds and are a very important component of the Salton Sea Ecosystem (Patten et. al. 2003), but detailed information regarding avian species use, distribution and abundance is lacking. In 2006 the California Department of Fish and Game, the Salton Sea Authority, and the USGS initiated a monthly survey of birds using Imperial Valley agriculture fields to provide information regarding avian species composition and use. Driving transects were originally delineated on a map as one continuous transect projected to cover a good representation of a subset of the entire Imperial Valley agriculture area. The original transect included mostly highways with heavy traffic and high speeds. It was decided for safety reasons that slower speed limits and lighter traffic areas would be more suitable to this type of survey. The result is two transects of roughly the same distance. The west transect is west of Highway 111, beginning at the junction of Highway 111 and Sinclair Road and ending on Harris Road and Butters Road. The east transect is east of Highway 111, beginning at the junction of Highway 111 and Sinclair Road. and ending on Harris Road and Butters Road. See map for details http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=4964 . Surveys began 30 minutes after sunrise on the west transect. The east transect was completed on the next consecutive day commencing at 30 minutes after sunrise. Driving speed was limited to 25 miles per hour where possible. When available, the survey was conducted with a driver and an observer. Many times the driver was alone and made all of the observations. As the vehicle followed the transect, fields on either side of the road were scanned for birds. When birds were observed in a field the vehicle was stopped and a GPS location was taken using a Magellan Sport Trac Topo. All bird species were counted using Steiner Merlin 10 x 42 binoculars and/or Nikon Fieldscope ED 20x45 zoom. Passerines were excluded from counts. Bird numbers were estimated by first counting all members of a species within one view of the binoculars or the spotting scope. This was done three to five times and an average number per optic view determined. The average value was then multiplied by the number of optic views required to cover the concentration of birds at that site. The resulting number was recorded as the estimated number of birds present. All members of a species present at an observation site were totaled to provide an estimated number of that species present at that site. Crop information, time of observation, and notes about the condition of the field were recorded for the field in which birds were detected The maximum distance birds were observed varied based on weather, angle of the sun with respect to the observer, or distance to the edge of the field birds were observed in. As a general estimate of mean maximum distance I used 400M. This distance is based on a visual estimate of the distance from a road to the far edge of a field in the Imperial Valley. Many fields had late stage crops that were tall and dense and subsequently could not be accurately surveyed from a vehicle. No effort was used to count and remove these crops from the survey area. If birds were observed flying out of or into these late stage crops information was recorded on only the birds seen in flight.

Credits

Use limitations

none - data can be used publicly with proper citation.

Extent

West -115.648940 East -115.311560
North 33.176702 South 32.828527

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, farming, environment


* Content type Downloadable Data


Place keywords Salton Sea, lower Colorado River, California, Imperial Valley

Theme keywords biota, environment

Thesaurus
Title ISO 19115 Topic Category




Theme keywords alfalfa, mountain plover, flood irrigation, agriculture, white-faced ibis, birds, long-billed curlew, Bermuda grass, habitat, avian, crops, cattle egret, species

Citation

* Title DS0427_20130618
Publication date 2008-09-22


Presentation formats * digital map


Citation Contacts

Responsible party
Organization's name California Department of Fish and Wildlife
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status completed
Spatial representation type * vector


* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


ArcGIS item properties
* Name DS0427_20130618
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
ground condition
Temporal extent
Beginning date 2006-01-01
Ending date 2007-07-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -115.648940
* East longitude -115.311560
* North latitude 33.176702
* South latitude 32.828527
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -12873981.129100
* East longitude -12836424.180700
* South latitude 3872565.839300
* North latitude 3918781.747300
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Steve Gibson
Organization's name California Department of Fish and Wildlife
Contact's position Associate Wildlife Biologist
Contact's role point of contact


Contact information
Phone
Voice (760) 200-9371

Address
e-mail address Steve.Gibson@wildlife.ca.gov



Resource Maintenance

Resource maintenance
Update frequency not planned


Resource Constraints

Legal constraints
Other constraints
none - data may be distributed upon request.
Constraints
Limitations of use
none - data can be used publicly with proper citation.

Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 2
M tolerance 2
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 7.11.2


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0427_20130618
* Object type point
* Object count 585



ArcGIS Feature Class Properties
Feature class name DS0427_20130618
* Feature type Simple
* Geometry type Point
* Has topology FALSE
* Feature count 585
* Spatial index TRUE
* Linear referencing FALSE



Geoprocessing history

Process
Process name Merge_1
Date 2008-04-2414:19:22
Tool location C:\Documents and Settings\KWHITE\Application Data\ESRI\ArcToolbox\My Toolboxes\1MyTools.tbx\Merge
Command issued
Include in lineage when exporting metadata No


Process
Process name Project_2
Date 2008-04-2414:20:29
Tool location C:\Documents and Settings\KWHITE\Application Data\ESRI\ArcToolbox\My Toolboxes\1MyTools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Process name RepairGeometry_3
Date 2008-09-2214:42:43
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\RepairGeometry
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-1811:43:29
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-1811:50:58
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Distribution

Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location http://bios.dfg.ca.gov

Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/400_499/ds427.zip

Fields

Details for object DS0427_20130618
* Type Feature Class
* Row count 585
Definition
Bird Use of Imperial Valley Crops [ds427]


Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 10
* Scale 0
* Field description
Internal feature number.
* Description source
ESRI
* Description of values
Sequential unique whole numbers that are automatically generated.




Field Shape
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
* Field description
Feature geometry.
* Description source
ESRI
* Description of values
Coordinates defining the features.




Field SNAME
* Alias SNAME
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Scientific name of species.


Field CNAME
* Alias CNAME
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Common name of species.


Field CROP
* Alias CROP
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Information about crop type or field vegetation.


Field NUMBER
* Alias NUMBER
* Data type Double
* Width 8
* Precision 19
* Scale 6
Field description
Estimated number of individual birds of a single species visible from the related coordinates.


Field SRVEY_DATE
* Alias SRVEY_DATE
* Data type Date
* Width 36
* Precision 0
* Scale 0
Field description
Date the survey occurred.


Field TIME
* Alias TIME
* Data type Double
* Width 8
* Precision 19
* Scale 6
Field description
Time observations were recorded.


Field HWY
* Alias HWY
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Highway or street name the observation was made from.


Field NOTES
* Alias NOTES
* Data type String
* Width 150
* Precision 0
* Scale 0
Field description
Notes related to crops such as condition of crop at time of observation, i.e. tilled, burned, harvesting, wet, dry, irrigating, tall crop, etc., or bird behavior i.e. flying.




Metadata Details

Metadata language English(UNITED STATES)
Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata dataset
Scope name * dataset


* Last update 2014-04-28


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata


Created in ArcGIS for the item 2014-03-0616:18:05
Last modified in ArcGIS for the item 2014-04-2811:42:36


Automatic updates
Have been performed Yes
Last update 2014-04-2811:42:36


Metadata Contacts

Metadata contact
Individual's name Steve Gibson
Organization's name California Department of Fish and Wildlife
Contact's role point of contact


Contact information
Phone
Voice (760) 200-9371

Address
e-mail address Steve.Gibson@wildlife.ca.gov



Thumbnail and Enclosures

Thumbnail

Enclosure
Enclosure type File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc