Name: Threatened Australian Grayling
Display Field: StreamName
Type: Feature Layer
Geometry Type: esriGeometryPolyline
Description: The Australian Grayling (Prototoctes maraena)is a small-bodied native fish that occurs on the South Coast of New South Wales. Australian Grayling areendangered- http://www.dpi.nsw.gov.au/fisheries/species-protection/conservation/what-current/endangered-species/australian-grayling.The methods used to create the predicted current distribution of Australian Grayling (Prototoctes maraena)are described fully in: NSW Department of Primary Industries (2015), NSW Fish Community Status 2015 – Final Report.The predicted current distribution ofAustralian Grayling (Prototoctes maraena)in NSW. All available records of the species were collated and assessed for accuracy. For current distribution, only records after 1 January 1994 were used. Within the framework of the Australian Hydrological Geospatial Fabric V2 surface hydrology network, the records were associated with attributes from the National Environmental Stream Attributes Database.Modelling the current geographic distribution of each listed threatened freshwater aquatic species or population was undertaken using MaxEnt 3.3.3; a widely used species distribution modelling program that utilises presence records to generate probabilities of occurrence based on a suite of environmental variables quantified across the area of interest.The Australian Hydrological Geospatial Fabric V2 surface hydrology network (Geofabric) is a fully connected and directed stream network based a 9 second DEM. It allocates a unique stream segment number to each river reach in Australia. The Environmental Attributes Database is a set of lookup tables supplying attributes describing the natural and anthropogenic characteristics of the stream and catchment environment that was developed by the Australian National University (ANU) in 2011 and updated in 2012. The data is supplied as part of the supplementary Geofabric products which is associated with the 9 second DEM derived streams and the National Catchment Boundaries based on 250k scale stream network. 30 Stream variables were assessed for the modelling.MaxEnt 3.3.3 is a widely used species distribution modelling program that utilises presence records to generate probabilities of occurrence based on a suite of environmental variables quantified across the area of interest. It was used to model the current geographic distribution of each listed threatened freshwater aquatic species or population. We utilised logistic output to plot the predicted distribution of each species. This output equates to a probability that the species will be observed in each river reach, given the environmental conditions that exist there relative to the environmental conditions where the species is known to occur. For this mapping, above 33% probability was considered predicted presence. In addition, predicted separate populations were connected by manual interpretation. The predicted values for each river reach were converted from the Geofabric framework to the higher resolution 2013 NSW Strahler Stream Order Hydroline.
Copyright Text:
Default Visibility: true
MaxRecordCount: 1000
Supported Query Formats: JSON, geoJSON
Min Scale: 0
Max Scale: 0
Supports Advanced Queries: true
Supports Statistics: true
Has Labels: false
Can Modify Layer: false
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: 149.5148688504563
YMin: -37.41173909495291
XMax: 150.8298844513714
YMax: -34.63873121324963
Spatial Reference: 4283
(4283)
Drawing Info:
Renderer:
Simple Renderer:
Symbol: Style: esriSLSSolid
Color: [0, 67, 148, 255]
Width: 2
Label:
Description:
Transparency: 0
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field: null
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID
)
-
StreamName
(
type: esriFieldTypeString, alias: StreamName, length: 30
)
-
Shape_Leng
(
type: esriFieldTypeDouble, alias: Shape_Leng
)
-
Species
(
type: esriFieldTypeString, alias: Species, length: 30
)
-
Shape
(
type: esriFieldTypeGeometry, alias: Shape
)
-
Shape.STLength()
(
type: esriFieldTypeDouble, alias: Shape.STLength()
)
Supported Operations:
Query
Query Attachments
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata