Layers:

Layer: Elk Migration Lines _ Egg Lake _ 2001_2002 _ 2017_2020 _ ds2907 (0)


Name: Elk Migration Lines _ Egg Lake _ 2001_2002 _ 2017_2020 _ ds2907

Display Field: mig

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The project leads for the collection of this data were Erin Zulliger and Richard Shinn. Elk (6 adult females, 3 juvenile males, and 2 juvenile females) were captured in 2017 and equipped with Lotek satellite GPS collars or VHF tags, transmitting data from 2017-2020. Additional GPS data was collected from elk (6 females) in 2001-2002 and included in the analysis to supplement the small sample size of the 2017-2020 dataset. The Egg Lake elk herd migrates from a winter range surrounding Egg Lake in Modoc County, California eastward into Siskiyou County for the summer. GPS locations were fixed at 4-hour intervals in the 2017-2020 dataset and 3 to 8-hour intervals in the 2001-2002 dataset. Migration lines as symbolized connect GPS data points per elk per seasonal migration. GPS points were extracted only during migrations using net-squared displacement graphs. Nine migration sequences from 5 elk, with an average migration time of 6.78 days and an average migration distance of 26.83 km, were used from the 2000-2001 dataset. Fourteen migration sequences from 6 elk, with an average migration time of 7.79 days and an average migration distance of 42.40 km, were used from the 2017-2020 dataset.

Copyright Text: Migration Mapper: https://migrationinitiative.org/content/migration-mapper California Department of Fish and Wildlife (CDFW)

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -13583196.4743
YMin: 5041199.6847
XMax: -13477980.2169
YMax: 5094301.4046
Spatial Reference: 102100 (3857)


Drawing Info:

{"renderer":{"authoringInfo":{"visualVariables":[{"type":"transparencyInfo","minSliderValue":2001,"maxSliderValue":2019}],"colorRamp":{"type":"multipart","colorRamps":[{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,200,189,255],"toColor":[252,200,189,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[183,252,182,255],"toColor":[183,252,182,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[179,189,252,255],"toColor":[179,189,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[187,246,252,255],"toColor":[187,246,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,250,194,255],"toColor":[252,250,194,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,189,250,255],"toColor":[252,189,250,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[207,252,222,255],"toColor":[207,252,222,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[202,219,252,255],"toColor":[202,219,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,207,232,255],"toColor":[252,207,232,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,218,182,255],"toColor":[252,218,182,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[216,179,252,255],"toColor":[216,179,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[222,252,179,255],"toColor":[222,252,179,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[229,204,252,255],"toColor":[229,204,252,255]}]}},"type":"uniqueValue","field1":"id_year","uniqueValueGroups":[{"heading":"id_year","classes":[{"label":"2017-2019","description":"2017-2019","symbol":{"type":"esriSLS","style":"esriSLSSolid","color":[255,0,0,255],"width":1},"values":[["2017-2019"]]},{"label":"2001-2002","description":"2001-2002","symbol":{"type":"esriSLS","style":"esriSLSSolid","color":[0,112,255,255],"width":1},"values":[["2001-2002"]]}]}],"uniqueValueInfos":[{"symbol":{"type":"esriSLS","style":"esriSLSSolid","color":[255,0,0,255],"width":1},"value":"2017-2019","label":"2017-2019"},{"symbol":{"type":"esriSLS","style":"esriSLSSolid","color":[0,112,255,255],"width":1},"value":"2001-2002","label":"2001-2002"}],"fieldDelimiter":",","visualVariables":[{"type":"transparencyInfo","field":"year","stops":[{"value":2001,"transparency":20},{"value":2019,"transparency":20}],"legendOptions":{"title":"year","showLegend":false}}]},"scaleSymbols":true,"transparency":0,"labelingInfo":null}

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field: id_year

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• mig (type: esriFieldTypeString, alias: mig, SQL Type: sqlTypeOther, length: 80, nullable: true, editable: true)
• firstdate (type: esriFieldTypeString, alias: firstdate, SQL Type: sqlTypeOther, length: 80, nullable: true, editable: true)
• lastdate (type: esriFieldTypeString, alias: lastdate, SQL Type: sqlTypeOther, length: 80, nullable: true, editable: true)
• id (type: esriFieldTypeString, alias: id, SQL Type: sqlTypeOther, length: 80, nullable: true, editable: true)
• season (type: esriFieldTypeString, alias: season, SQL Type: sqlTypeOther, length: 80, nullable: true, editable: true)
• year (type: esriFieldTypeDouble, alias: year, SQL Type: sqlTypeOther, nullable: true, editable: true)
• id_year (type: esriFieldTypeString, alias: id_year, SQL Type: sqlTypeOther, length: 80, nullable: true, editable: true)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

ID: 2017-2019
Name: 2017-2019
Domains:

Templates:

Name: 2017-2019
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• id_year: 2017-2019

---

ID: 2001-2002
Name: 2001-2002
Domains:

Templates:

Name: 2001-2002
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• id_year: 2001-2002

---


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/21/2025 9:40:53 PM

Schema Last Edit Date: 7/21/2025 9:40:53 PM

Data Last Edit Date: 7/21/2025 9:24:38 PM