Mohave Ground Squirrel Trapping Grids - 1998-2007 [ds663]

File Geodatabase Feature Class

Open this dataset in BIOS

Tags
Mohave ground squirrel, biota, California


Summary

The objectives of this dataset are to help document the geographic distribution of Mohave ground squirrel occurrences, summarize the distribution and relative intensity of survey efforts, and recommend areas where additional survey effort is needed.

Description

This dataset brings together the data from unpublished field surveys conducted during the 10-year period from 1998-2007. The information presented here includes positive and negative records summarizing 1140 trapping sessions at 539 grid sites, only 102 of which (at 89 grid sites) were successful in capturing one or more Mohave ground squirrels. See the full report at http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=15148.

Credits

Phil Leitner

Use limitations

Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.

Extent

West -118.476680 East -116.532556
North 36.501651 South 33.050594

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:150,000,000

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota


Content type Downloadable Data
Export to FGDC CSDGM XML format as Resource Description No

Place keywords California

Theme keywords Mohave ground squirrel

Theme keywords biota

Thesaurus
Title ISO 19115 Topic Category


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Citation

Title Mohave Ground Squirrel Trapping Grids - 1998-2007 [ds663]
Publication date 2008-01-0100:00:00


Presentation formats digital map
FGDC geospatial presentation format vector digital data


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Citation Contacts

Responsible party
Organization's name Phil Leitner
Contact's role originator


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Resource Details

Dataset languages English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Status completed
Spatial representation type vector


Supplemental information
The source of these data are regional trapping surveys and protocol surveys carried out at proposed development sites, as required by the CDFG (CDFG 2003). The data represent grid trapping efforts, both positive (MGS detected) and negative (MGS not detected). There are 2 types of grid trapping, protocol and non-protocol. They differ mainly in that protocol trapping involves 2 (pre-2003) or 3 (2003-present) trapping sessions at each grid and is almost always done at a site proposed for development. Often the site is disturbed or paved over after protocol trapping is done, so the habitat is no longer available. Non-protocol trapping is usually done just once in a season for research purposes, so the habitat normally remains undisturbed after trapping. The California Department of Fish and Game (CDFG) requires trapping surveys at proposed development sites according to a prescribed protocol (CDGF 2003). The CDFG guidelines specify that surveys be conducted on proposed project sites that support desert scrub vegetation and are within or adjacent to the Mohave ground squirrel geographic range. The surveys must be carried out by a qualified biologist operating under authority of a Memorandum of Understanding (MOU) with CDFG. The protocol mandates an initial visual survey of the project site. If no Mohave ground squirrel is detected visually, livetrapping is required for up to 3 sessions of 5 consecutive days each (prior to 2003, protocol trapping only required 2 sessions per survey). The trapping sessions must be conducted during the periods March 15-April 30, May 1-31, and June 15-July 15. Trapping grids normally consist of 100 traps arranged in a 4x25 array (linear projects) or in a 10x10 array (other projects). A 4x25 trap array has a length of 840 meters, with the UTM coordinate reported at the center point. In order to obtain the results of protocol trapping surveys for the period 1998-2007, I contacted all biologists who were known to possess an MOU authorizing take of Mohave ground squirrels. The great majority responded by providing their survey data, including dates of trapping sessions, coordinates of grid centers, number of trap-days of sampling effort, and whether or not Mohave ground squirrels were detected. Although I have not obtained data for all protocol trapping efforts, I have collected a total of 943 records that represent 426,615 trap-days of sampling. I estimate that I obtained records for >95% of the total protocol trapping effort for the period 1998-2007. For regional and protocol surveys, a record is defined as a single trapping session, usually consisting of 5 successive days. Records from trapping surveys can be negative, with no Mohave ground squirrel captures, or positive, indicating a session with at least 1 capture. The regional and protocol trapping surveys provided a total of 1,038 negative records, as compared to only 102 trapping sessions in which at least 1 Mohave ground squirrel was captured. Although the regional studies involved only 21.6% of the total trapping effort, they accounted for 69.6% of the positive records. On the other hand, the protocol surveys made up 78.4% of trapping effort, but contributed only 30.4% of Mohave ground squirrel detections. For the purposes of this data layer, only one record per grid trapping survey is included, although there may have been up to three trapping sessions per trapping survey. If one or more Mojave ground squirrel was detected at any trapping session in a trapping survey, the record is reported as positive for that survey. The number of trapping sessions as well as the maximum number of MGS captured during any trapping session for each survey is reported.
Processing environment Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095


Credits
Phil Leitner
ArcGIS item properties
Name ds663
Size 0.014
Location file://\\geodata.\\ds600-699\663-Mohave_Ground_Squirrel_Trapping_Grids_2005\v4\v4_final\ds663.gdb
Access protocol Local Area Network

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Extents

Extent
Geographic extent
Bounding rectangle
West longitude -118.476680
East longitude -116.532556
North latitude 36.501651
South latitude 33.050594
Extent contains the resource Yes

Extent
Description
ground condition
Temporal extent
Beginning date 1998
Ending date 2007

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -118.476680
* East longitude -116.532556
* North latitude 36.501651
* South latitude 33.050594
* Extent contains the resource Yes

Extent in the item's coordinate system
West longitude 142347.646198
East longitude 310273.927339
South latitude -545985.844567
North latitude -167176.846144
Extent contains the resource Yes

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Resource Points of Contact

Point of contact
Individual's name Phil Leitner
Contact's role point of contact


Contact information
Phone
Voice (925) 253-8400

Address
Type physical
Delivery point 2 Parkway Court
City Orinda
Administrative area CA
Postal code 94563

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Resource Maintenance

Resource maintenance
Update frequency not planned


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Resource Constraints

Constraints
Limitations of use

Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.


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Spatial Reference

ArcGIS coordinate system
Type Projected
Geographic coordinate reference GCS_North_American_1983
Projection NAD_1983_California_Teale_Albers
Coordinate reference details
Projected coordinate system
Well-known identifier 3310
X origin -16909700
Y origin -8597000
XY scale 10000
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 3310
Well-known text PROJCS["NAD_1983_California_Teale_Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",-4000000.0],PARAMETER["Central_Meridian",-120.0],PARAMETER["Standard_Parallel_1",34.0],PARAMETER["Standard_Parallel_2",40.5],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3310]]

Reference system identifier
* Value 3310
* Codespace EPSG
* Version 6.8(9.2.0)


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Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name ds663
* Object type point
* Object count 0

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ArcGIS Feature Class Properties
Feature class name ds663
* Feature type Simple
* Geometry type Point
* Has topology FALSE
* Feature count 0
* Spatial index TRUE
* Linear referencing FALSE

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Data Quality

Lineage

Process step
Description
Edited original metadata by adding ISO keywords. Reprojected data into California Teale Albers NAD83. Added Pr_Pres_Ab field in order to symbolize in ArcIMS.


Process contact
Individual's name Josh Little
Organization's name California Department of Fish and Game
Contact's position BIOS Data Librarian
Contact's role processor


Contact information


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Process step
When the process occurred 2013-09-26
Description
Restructured attribute table to show the most pertinent information at the beginning. Also, made other minor edits to the metadata.


Process contact
Individual's name Sophie King
Organization's name California Department of Fish and Wildlife
Contact's position BIOS Data Librarian
Contact's role processor


Contact information


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Geoprocessing history

Process
Date 2022-04-2210:11:06
Tool location c:\program files\arcgis\pro\Resources\ArcToolbox\toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2022-04-2210:11:17
Tool location c:\program files\arcgis\pro\Resources\ArcToolbox\toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2022-04-2210:11:30
Tool location c:\program files\arcgis\pro\Resources\ArcToolbox\toolboxes\Data Management Tools.tbx\Rename
Command issued
Include in lineage when exporting metadata No


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Distribution

Distribution format
* Name File Geodatabase Feature Class


Transfer options
Online source
Location https://wildlife.ca.gov/Data/BIOS
Function performed information

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Fields

Details for object ds663
* Type Feature Class
* Row count 0
Definition
Mohave Ground Squirrel Trapping Grids - 1998-2007 [ds663]


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


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


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Field Year
* Alias Year
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Year of survey.
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Field CNDDB_Occ
* Alias CNDDB_Occ
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
California Natural Diversity Database (CNDDB) occurrence number.
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Field SName
* Alias SName
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Species scientific name.
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Field CName
* Alias CName
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Species common name.
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Field Pres_Abs
* Alias Pres_Abs
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Mojave ground squirrel present (positive survey) or not detected (negative survey).
HideFieldPres_Abs


Field Detection
* Alias Detection
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Type of detection used to confirm Mohave ground squirrel occurrence.
List of values
Value visual
Description Visual detection.


Value auditory
Description Auditory detection.


Value DOR
Description Dead on road.


Value radio-tracking
Description Radio-tracking detection.


Value pitfall-trap (incidental to reptile surveys)
Description Pitfall-trap detection.


Value live-trapping
Description Live-trapping detection.


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Field MaxNumMGS
* Alias MaxNumMGS
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Maximum number of MGS observed per trapping survey.
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Field Hab_Type
* Alias Hab_Type
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Habitat type.
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Field Pr_Pres_Ab
* Alias Pr_Pres_Ab
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Concatenation of Protocol and Pres_Abs fields in order to symbolize in ArcIMS.
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Field Protocol
* Alias Protocol
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Type of trapping protocol.
List of values
Value protocol trapping
Description Grid survey done by CDFG trapping protocol.


Value other trapping
Description Live trapping not done according to CDFG protocol.


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Field Sessions
* Alias Sessions
* Data type SmallInteger
* Width 2
* Precision 0
* Scale 0
Field description
Number of trap sessions (5 consecutive days of trapping).
HideFieldSessions


Field Grid_Name
* Alias Grid_Name
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Grid name.
HideFieldGrid_Name


Field GridLayout
* Alias GridLayout
* Data type String
* Width 15
* Precision 0
* Scale 0
Field description
Layout of grid traps, number of traps wide x number of traps long.
HideFieldGridLayout


Field Notes
* Alias Notes
* Data type String
* Width 200
* Precision 0
* Scale 0
Field description
Text field for notes.
HideFieldNotes


Field InfoSource
* Alias InfoSource
* Data type String
* Width 200
* Precision 0
* Scale 0
Field description
Information source.
HideFieldInfoSource


Field County
* Alias County
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
County name.
HideFieldCounty


Field Quad
* Alias Quad
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Quadrangle name.
HideFieldQuad


Field Section
* Alias Section
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Section.
HideFieldSection


Field Township
* Alias Township
* Data type String
* Width 15
* Precision 0
* Scale 0
Field description
Township.
HideFieldTownship


Field Range
* Alias Range
* Data type String
* Width 20
* Precision 0
* Scale 0
Field description
Range.
HideFieldRange


Field UTM_Source
* Alias UTM_Source
* Data type String
* Width 15
* Precision 0
* Scale 0
Field description
Source of UTM data.
HideFieldUTM_Source


Field Datum
* Alias Datum
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
Datum.
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Field Northing
* Alias Northing
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
UTM Northing.
HideFieldNorthing


Field Easting
* Alias Easting
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
UTM Easting.
HideFieldEasting


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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 2022-04-22


ArcGIS metadata properties
Metadata format ArcGIS1.0
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2022-04-2210:11:13
Last modified in ArcGIS for the item 2022-04-2210:11:02


Automatic updates
Have been performed Yes
Last update 2022-04-2210:11:02


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Metadata Contacts

Metadata contact
Individual's name Phil Leitner
Contact's role point of contact


Contact information
Phone
Voice (925) 253-8400

Address
Type physical
Delivery point 2 Parkway Court
City Orinda
Administrative area CA
Postal code 94563

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Metadata Maintenance

Maintenance
Update frequency not planned


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Thumbnail and Enclosures