Layer: 2023 Seagrass (ID:116)

View In: Map Viewer

Name: 2023 Seagrass

Display Field: Zone

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: 2023 Broad Scale Mapping of the Catlins / Pounawea Estuary was undertaken by Salt Ecology on behalf of Otago Regional Council and is described in: Roberts KL, Scott-Simmonds T, Rabel H, Stevens LM. 2024. Synoptic Broad Scale Ecological Assessment of Catlins/ Pounawea Estuary. Salt Ecology Report 144, prepared for Otago Regional Council, August 2024. 74p. Ground-truthing was conducted during December 2023. Features were mapped onto 30cm/pixel colour satellite imagery captured 29 October 2023 . Generally, at a digitising scale of 1:2000, spatial accuracy for features clearly visible on aerial photos (e.g. salt marsh, cobble fields, dense macroalgae) is ~2 metres. Spatial accuracy for features difficult to distinguish on aerial photos (e.g., where boundaries represent a habitat transition from mud to sand) is ~10 to 50 metres depending on the extent of ground truthing undertaken. Features were digitised and field codes recorded by Salt Ecology in a master layer. Salt Ecology proprietary scripting tools were used to validate field codes, check for topology errors, produce symbolised output layers and create summary data tables. Seagrass features were classified based on estimated percent cover. Use with permission of Otago Regional Council and acknowledgment of Salt Ecology.

Copyright Text: Salt Ecology

Min. Scale: 38701

Max. Scale: 624

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

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Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field:

Type ID Field: CrsPctCov

Fields:

OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
Zone (type: esriFieldTypeString, alias: Zone, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
Category (type: esriFieldTypeString, alias: Category, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
FieldCode (type: esriFieldTypeString, alias: FieldCode, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
Pct_Cover (type: esriFieldTypeString, alias: Pct_Cover, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
TotPctCov (type: esriFieldTypeInteger, alias: TotPctCov, SQL Type: sqlTypeOther, nullable: true, editable: true)
CrsPctCov (type: esriFieldTypeString, alias: CrsPctCov, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
Origin (type: esriFieldTypeString, alias: Origin, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
Class (type: esriFieldTypeString, alias: Class, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
SubClass (type: esriFieldTypeString, alias: SubClass, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
DomHab (type: esriFieldTypeString, alias: DomHab, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
Substrate (type: esriFieldTypeString, alias: Substrate, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
AIH (type: esriFieldTypeInteger, alias: AIH, SQL Type: sqlTypeOther, nullable: true, editable: true)
Area_ha (type: esriFieldTypeDouble, alias: Area_ha, SQL Type: sqlTypeOther, nullable: true, editable: true)
Estuary (type: esriFieldTypeString, alias: Estuary, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Year (type: esriFieldTypeString, alias: Year, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

CrsPctCov: Complete (>=90%)

CrsPctCov: Dense (70 to <90%)

CrsPctCov: High-Moderate (50 to <70%)

CrsPctCov: Low-Moderate (30 to <50%)

CrsPctCov: Sparse (10 to <30%)

CrsPctCov: Very sparse (1 to <10%)

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 12/9/2025 3:29:42 AM

Schema Last Edit Date: 12/9/2025 3:27:48 AM

Data Last Edit Date: 12/9/2025 3:27:48 AM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat