Occurrence record: DNA D0051275

Preserved specimen of Spirodela polyrhiza (L.) Schleid. | Large Duckweed recorded on 1990-08-01

API

Dataset

Data partner	Australia's Virtual Herbarium
Data resource	Northern Territory Herbarium (DNA) AVH data
Institution code	Department of Environment and Natural Resources Supplied institution code "DNA"
Collection	Northern Territory Herbarium (Darwin) Supplied collection code "DNA"
Catalog number	DNA D0051275
Occurrence ID	DNA:DNA:DNA D0051275
Record type	Preserved specimen Supplied basis "PreservedSpecimen"
Preparations	sheet
Collector	Ian Donald Cowie
Record number	1323
Reproductive condition	fertile
License	CC-BY 4.0 (Int)
Type	PhyscialObject
Presence/Absence	PRESENT Supplied as Present
Occurrence remarks	In water 80cm deep in main river channel, with Azolla pinnata and rotting vegetation; amongst upper leaves of Vallisneria spiralis; SPIRIT MATERIAL ONLY.

Event

Occurrence date	1990-08-01
Date precision	DAY

Taxonomy

Scientific name	Spirodela polyrhiza Supplied scientific name "Spirodela polyrhiza (L.) Schleid."
Identified to rank	species
Common name	Large Duckweed
Kingdom	Plantae
Phylum	Charophyta
Class	Equisetopsida
Order	Alismatales
Family	Araceae
Genus	Spirodela
Species	Spirodela polyrhiza
Name match metric	exactMatch
Scientific name authorship	(L.) Schleid.
Name parse type	SCIENTIFIC

Geospatial

Country	Australia
State or Territory	Northern Territory Supplied as: "The Northern Territory"
Locality	Howard River.
Latitude	-12.463909 Supplied as: "-12.4652643158248"
Longitude	131.0855105 Supplied as: "131.084540592753"
Datum	EPSG:4326 Supplied datum: "AGD66"
Verbatim locality	Howard River.
Coordinate precision	Unknown
Coordinate uncertainty (in metres)	10000.0
Georeferenced by	Ian Donald Cowie
Terrestrial	true
Biome	TERRESTRIAL
Marine	false
Country Code	AU

User flagged issues

Data quality tests

Test name	Result
Coordinates converted to WGS84	Warning
Coordinate rounded	Warning
First of the month	Warning
Coordinates dont match supplied state	Warning
Show/Hide 91 passed properties
Ambiguous collection	Passed
Ambiguous institution	Passed
Basis of record badly formed	Passed
Collection match fuzzy	Passed
Collection not matched	Passed
CONTINENT_COORDINATE_MISMATCH	Passed
Continent country mismatch	Passed
Continent derived from coordinates	Passed
CONTINENT_DERIVED_FROM_COUNTRY	Passed
Continent invalid	Passed
Coordinates centre of country	Passed
Supplied coordinates centre of state	Passed
Coordinate invalid	Passed
Coordinates are out of range for species	Passed
Decimal latitude/longitude conversion failed	Passed
Coordinate reprojection suspicious	Passed
Coordinate uncertainty meters invalid	Passed
Coordinates dont match supplied country	Passed
Country inferred from coordinates	Passed
Country invalid	Passed
Country mismatch	Passed
Different owner institution	Passed
First of the century	Passed
First of the year	Passed
Geodetic datum assumed WGS84	Passed
Unrecognized geodetic datum	Passed
Georeferenced after occurrence date	Passed
Identification date before occurrence date	Passed
Institution and Collection mismatch	Passed
Institution match fuzzy	Passed
Institution not matched	Passed
Interpretation error	Passed
Invalid scientific name	Passed
Location not supplied	Passed
Missing collection date	Passed
Missing geodetic datum	Passed
Missing georeferenced by	Passed
Modified date invalid	Passed
Modified date unlikely	Passed
Multimedia date invalid	Passed
Multimedia uri invalid	Passed
Name not supplied	Passed
Occurrence status inferred from basis of record	Passed
Occurrence status inferred from individual count	Passed
Occurrence status unparsable	Passed
Latitude is negated	Passed
Longitude is negated	Passed
Presumed swapped coordinate	Passed
Recorded date invalid	Passed
Recorded date mismatch	Passed
Recorded date unlikely	Passed
SCIENTIFIC_NAME_AND_ID_INCONSISTENT	Passed
Sensitivity report invalid	Passed
Sensitivity report not loadable	Passed
Taxon affinity species	Passed
TAXON_CONCEPT_ID_NOT_FOUND	Passed
Taxon confer species	Passed
Taxon default match	Passed
Taxon error	Passed
Taxon excluded	Passed
Taxon excluded associated	Passed
Taxon homonym	Passed
Taxon indeterminate species	Passed
Taxon match aggregate	Passed
Taxon match fuzzy	Passed
Taxon match higher rank	Passed
TAXON_MATCH_NAME_AND_ID_AMBIGUOUS	Passed
Taxon match none	Passed
TAXON_MATCH_TAXON_CONCEPT_ID_IGNORED	Passed
Taxon misapplied	Passed
Taxon misapplied matched	Passed
Taxon parent child synonym	Passed
Taxon question species	Passed
Resource taxonomic scope mismatch	Passed
Taxon species plural	Passed
Coordinate precision and uncertainty transposed	Passed
Uncertainty not specified	Passed
Supplied country not recognised	Passed
Kingdom not recognised	Passed
Unrecognized collection code	Passed
Unrecognized institution code	Passed
Supplied coordinates are zero	Passed
Biosecurity issue	Passed
Suspected outlier	Passed
Geospatial issue	Passed
Habitat incorrect for species	Passed
Taxon misidentified	Passed
Taxonomic issue	Passed
Temporal issue	Passed
Other issue	Passed
Duplicate record	Passed
Show/Hide 5 missing properties
Missing georeference protocol	Missing
Missing georeference sources	Missing
Missing georeference verification status	Missing
Missing georeference date	Missing
Missing taxon rank	Missing
Show/Hide 24 tests that have not been run
Coordinate precision invalid	Unchecked (lack of data)
Footprint SRS invalid	Unchecked (lack of data)
Footprint WKT mismatch	Unchecked (lack of data)
Footprint WKT invalid	Unchecked (lack of data)
TAXON_MATCH_SCIENTIFIC_NAME_ID_IGNORED	Unchecked (lack of data)
TAXON_MATCH_TAXON_ID_IGNORED	Unchecked (lack of data)
SCIENTIFIC_NAME_ID_NOT_FOUND	Unchecked (lack of data)
TAXON_ID_NOT_FOUND	Unchecked (lack of data)
Depth value supplied in feet	Unchecked (lack of data)
Depth unlikely	Unchecked (lack of data)
Min and max depth reversed	Unchecked (lack of data)
Depth value non-numeric	Unchecked (lack of data)
Elevation unlikely	Unchecked (lack of data)
Min and max altitude reversed	Unchecked (lack of data)
Altitude value supplied in feet	Unchecked (lack of data)
Altitude value non-numeric	Unchecked (lack of data)
Identified date unlikely	Unchecked (lack of data)
Identified date invalid	Unchecked (lack of data)
Type status invalid	Unchecked (lack of data)
References uri invalid	Unchecked (lack of data)
Individual count invalid	Unchecked (lack of data)
Individual count conflicts with occurrence status	Unchecked (lack of data)
Georeferenced date unlikely	Unchecked (lack of data)
Georeferenced date invalid	Unchecked (lack of data)

Outlier information

This record has been detected as an outlier using the Reverse Jackknife algorithm for the following layers:

Precipitation - seasonality (Bio15) - CSIRO Ecosystem Sciences
Notes: Data derived using ANUCLIM v6 (beta) with the new set of climate surfaces (centred on 1990), by Dr. Kristen Williams.
Scale: 0.01 degree (~1km)
Precipitation - driest quarter (Bio17) - CSIRO Ecosystem Sciences
Notes: Data derived using ANUCLIM v6 (beta) with the new set of climate surfaces (centred on 1990), by Dr. Kristen Williams.
Scale: 0.01 degree (~1km)

More information on the data quality work being undertaken by the Atlas is available here:

Additional political boundaries information

Area Management
NRM Regions 2010	Northern Territory
NRM Regions 2017	Northern Territory
Area management
National Landcare Program Management Units 2018	Northern Territory
Biodiversity
IBRA 6 Regions	Darwin Coastal
IBRA 7 Regions	Darwin Coastal
IBRA 7 Subregions	Darwin Coastal
Fire
National Indicative Aggregated Fire Extent Dataset 2019-2020 - v20200324	National Indicative Aggregated Fire Extent 2019-2020
Hydrology
Drainage Divisions Level 1	Tanami-Timor Sea Coast
Drainage Divisions Level 2	FINNISS RIVER
Marine
States including coastal waters	Northern Territory (including Coastal Waters)
Political
ASGS Australian States and Territories	Northern Territory
Australian States and Territories	Northern Territory
Local Government Areas 2011	Litchfield (M)
Local Government Areas 2012 deprecated	Litchfield - Pt B
Local Government Areas PSMA 2018	LITCHFIELD MUNICIPALITY
PSMA ABS Census Indigenous Language Speakers by Area - I01B (2016)	92
PSMA ABS Census Selected Person Characteristics by Indigenous Status by Area - I01A (2016)	2309
PSMA ABS Greater Capital City Statistical Areas (2016)	GREATER DARWIN
PSMA ABS SA2 Statistical Areas (2016)	HOWARD SPRINGS
PSMA ABS SA3 Statistical Areas (2016)	LITCHFIELD
PSMA ABS SA4 Statistical Areas (2016)	DARWIN
PSMA Commonwealth Electoral Boundaries (2018)	LINGIARI
PSMA Indigenous Areas (2016)	LITCHFIELD
PSMA Indigenous Locations (2016)	HOWARD SPRINGS - GUNN POINT
PSMA Indigenous Regions (2016)	DARWIN
PSMA Remoteness Areas (2016)	Outer Regional Australia
PSMA State Electoral Boundaries (2018)	NELSON
PSMA States (2016)	NORTHERN TERRITORY
World Country Boundaries	Australia
Vegetation
Australia's Indigenous forest estate (2013) v2.0	Non-Indigenous, Non forest
Forests of Australia (2013) v2.0	Non Forest
Forests of Australia 2018B	Eucalypt Medium Open
NVIS 4.1 Major Vegetation Groups	Eucalypt Open Forests
NVIS 4.1 Major Vegetation Subgroups	Eucalyptus open forests with a grassy understorey
Tenure of Australia's forests (2013) v2.0	Private Freehold
Vegetation types - native	Eucalypt open forests
Vegetation types - present	Eucalyptus open forest

Environmental sampling for this location

Climate
Precipitation - annual (Bio12)	1712.0 mm
Precipitation - coldest quarter (Bio19)	7.0 mm
Precipitation - driest period (Bio14)	0.0 mm
Precipitation - driest quarter (Bio17)	6.0 mm
Precipitation - seasonality (Bio15)	109.0 mm
Precipitation - warmest quarter (Bio18)	462.0 mm
Precipitation - wettest period (Bio13)	107.0 mm
Precipitation - wettest quarter (Bio16)	1139.0 mm
Radiation - annual mean (Bio20)	21.1 MJ/m2/day
Radiation - seasonality (Bio23)	8.0
Radiation - warmest quarter (Bio26)	22.8 MJ/m2/day
Temperature - annual mean (Bio01)	27.5 degrees C
Temperature - annual range (Bio07)	17.5 degrees C
Temperature - coldest period min (Bio06)	17.2 degrees C
Temperature - coldest quarter mean (Bio11)	24.8 degrees C
Temperature - diurnal range mean (Bio02)	10.4 degrees C
Temperature - driest quarter mean (Bio09)	24.8 degrees C
Temperature - isothermality (Bio03)	0.59 %
Temperature - seasonality (Bio04)	0.59
Temperature - warmest period max (Bio05)	34.7 degrees C
Temperature - warmest quarter (Bio10)	29.3 degrees C
Temperature - wettest quarter mean (Bio08)	28.3 degrees C
WorldClim 2.1: Temperature - annual mean	27.2625 °C
WorldClim: Temperature - isothermality	60.0 %
Substrate
Moisture Index - annual mean (Bio28)	0.52
Moisture Index - highest quarter mean (Bio32)	1.0
Elevation	18.0 m

AVH

The Australasian Virtual Herbarium