Display Field: GA_Sample_ID
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: This data layer comprises chlorophyll a, b and c and phaeophytin a concentrations from the upper 2 cm of seabed sediments. Bottom sediments were collected using either a Smith McIntyre grab or a Box Core. 0.4 ml samples of surface sediment (0-0.5 cm) were syringed into plastic bags. The samples were wrapped in Al foil and frozen. Chlorophyll concentrations were calculated on sediment extracts (90% acetone + 0.1% MgCO3) at spectrophometric readings at wavelengths of 647, 630, 750 and 664 nm. For chlorophyll-a (Chl-a) and phaeophytin-a, wavelengths of 664 nm and 750 nm (before and after the addition of 200 -L-1 0.1 mol L-1 HCl per 2 mL extractant) and the equation derived by Lorenzen (1967) were used. Chlorophyll b and c concentrations were calculated according to equations provided by Jeffrey and Welschmeyer (2003). The reproducibility of the measurements was +/-10%. Lorenzen, C. J. (1967). Determination of chlorophyll and pheopigments: Spectrophotometric equations. Limnology and Oceanography 12, 343-346. Jeffrey, S.W., and Welschmeyer, N.A. (2003). Spectrophotometric and fluorometric equations in common use in oceanography. In 'Phytoplankton pigments in oceanography: guidelines to modern methods' (Eds. S.W. Jeffrey and R.F.C. Mantoura, and S.W. Wright.) pp. 597-615. (UNESCO Paris.)
Copyright Text: © Commonwealth of Australia (Geoscience Australia) 2016. This product is released under the Creative Commons Attribution 4.0 International Licence. http://creativecommons.org/licenses/by/4.0/legalcode
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: true
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
-
XMin: 126.91223300000001
YMin: -12.209479999999928
XMax: 127.45321700000011
YMax: -11.39911666699993
Spatial Reference: 4326 (4326)
Drawing Info:
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Renderer:
- Simple Renderer:
Symbol:
Description:
Labeling Info:
-
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 )
- ga_sample_number ( type: esriFieldTypeDouble, alias: GA_Sample_number )
- ga_sample_id ( type: esriFieldTypeString, alias: GA_Sample_ID, length: 255 )
- sample_type ( type: esriFieldTypeString, alias: Sample_type, length: 255 )
- longitude ( type: esriFieldTypeDouble, alias: Longitude )
- latitude ( type: esriFieldTypeDouble, alias: Latitude )
- water_depth__m_ ( type: esriFieldTypeDouble, alias: Water_depth__m_ )
- acquire_date ( type: esriFieldTypeString, alias: Acquire_date, length: 255 )
- sediment_depth__cm_ ( type: esriFieldTypeString, alias: Sediment_depth__cm_, length: 255 )
- chlor_a__ug_g___dwt___lorenzen_ ( type: esriFieldTypeString, alias: Chlor_a__ug_g___dwt___Lorenzen_, length: 255 )
- chlor_b__ug_g_dry_wt_ ( type: esriFieldTypeDouble, alias: Chlor_b__ug_g_dry_wt_ )
- chlor_c__ug_g_dry_wt_ ( type: esriFieldTypeDouble, alias: Chlor_c__ug_g_dry_wt_ )
- pheophytin__ug_g_dwt___lorenzen ( type: esriFieldTypeDouble, alias: Pheophytin__ug_g_dwt___Lorenzen_ )
- shape ( type: esriFieldTypeGeometry, alias: Shape )
Supported Operations: Query Query Attachments Generate Renderer Return Updates
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