A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Eleocharis quadrangulata has left across the world's sequence archives.
At a glance
DNA specimens3
Marker genes4
GenBank sequences6
eDNA detections3
Countries1
The DNA barcodea real sequence read deposited for this species
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★matK1★rbcL3★rbcLa★ITS2
plant barcodefungal barcode
08Occurrence & distribution
Record type1 002 records
Wild obs. + sensor275
Museum / vouchered727
Range
Area of Occupancy AOO2 940 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy76% within 1 km
≤100 m 143≤1 km 19≤10 km 9>10 km 42
213 georeferenced · 62 without coordinates
Open the mapobservation + sensor275
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy56% within 1 km
≤100 m 41≤1 km 168≤10 km 122>10 km 39
370 georeferenced · 357 without coordinates
Open the institutions mapphysical evidence727
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions56 of 84 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Jackson, US
65
Bronx, US
61
Austin, US
55
Chapel Hill, US
41
Saint Louis, US
37
Fort Worth, US
28
Wuzhou, CN
27
Bloomington, US
27
Ann Arbor, US
25
Bangkok, TH
23
US
19
Chongqing Museumlocation not on record
17
Williamsburg, US
16
Tuscaloosa, US
14
Philadelphia, US
14
College Park, US
13
James F. Matthews Center for Biodiversity Studieslocation not on record
11
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
10
University of Stellenboschlocation not on record
8
BAYLUlocation not on record
8
Burlington, US
8
New Haven, US
7
Fayetteville, US
6
Fairfax, US
6
Mississippi State, US
6
Columbia, US
6
University of Southern Mississippilocation not on record
6
Norfolk, US
6
Little Rock, US
6
Davis, US
5
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
5
GAlocation not on record
5
Claremont, US
5
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
5
Tampa, US
5
Valdosta State Universitylocation not on record
4
Madison, US
4
Dover, US
4
Edmonton, CA
4
Flagstaff, US
4
Henderson State Universitylocation not on record
4
San Angelo, US
4
Morgantown, US
3
Russellville, US
3
Guasave, MX
3
Corvallis, US
3
Canadian Department of Agriculturelocation not on record
3
Jena Microbial Resource Collectionlocation not on record
3
Auckland, NZ
3
AUAlocation not on record
3
Denton, US
3
Lubbock, US
3
Montréal, CA
2
LINUlocation not on record
2
Millersville, US
2
Knoxville, US
2
Elikins, US
2
University of South Carolina Salkehatchielocation not on record
2
Clemson, US
2
Riverside, US
2
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
2
Moscow, US
2
Tall Timbers Research Stationlocation not on record
1
Pullman, US
1
Pittsburg, US
1
Whitewater, US
1
Porto Alegre, BR
1
Green Bay, US
1
University of New Hampshirelocation not on record
1
Chicago, US
1
University of Guelph, OAC Herbariumlocation not on record
1
Moscow State Universitylocation not on record
1
Western Carolina Universitylocation not on record
1
Conway, US
1
Chadron, US
1
University of Tennessee at Chattanoogalocation not on record
1
WTUlocation not on record
1
University of Tennessee at Chattanoogalocation not on record
1
ASUlocation not on record
1
Acadia Universitylocation not on record
1
Boise, US
1
Toronto, CA
1
EL PASO, US
1
Universidade Federale do Rio Grande do Sullocation not on record
1
84 institutions · 706 of 727 vouchered records shown · 21 without an institution code
09Environmental DNA3 detections
Where the DNA of Eleocharis quadrangulata was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found3
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 3 detections have coordinates
Open the map1 country0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median22.7 °C 22.7–22.7
Seasonal swing summer↔winter27.5 °C
Max temp (day)24.7 °C
Min temp (night)21.1 °C
Precipitation94.3 mm/mo
Air humidity59.7 %
Moisture balance-80.6 mm/mo
Vapour deficit1,105 Pa
Wind speed5.60 m/s
Cloud cover38.0 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 002 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI3 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics3 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗