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 Carex mertensii has left across the world's sequence archives.
At a glance
DNA specimens21
Marker genes5
GenBank sequences10
eDNA detections16
Countries2
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.
★matK3★rbcL4★rbcLa★ITS3★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualCarex mertensii carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Chromosomes2n = 62 n = 31
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 621×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — TAYLOR, R.L., & G.A. MULLIGAN. 1968. Flora of the Queen Charlotte Islands. Part 2. Cytological aspects of the Vascular Plants. Queen's Printer, Ottawa. pp. 148.
n 311×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — TAYLOR, R.L., & G.A. MULLIGAN. 1968. Flora of the Queen Charlotte Islands. Part 2. Cytological aspects of the Vascular Plants. Queen's Printer, Ottawa. pp. 148.
08Occurrence & distribution
Record type1 614 records
Wild obs. + sensor887
Museum / vouchered726
Other1
Range
Area of Occupancy AOO4 228 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 accuracy92% within 1 km
≤100 m 548≤1 km 81≤10 km 33>10 km 22
684 georeferenced · 203 without coordinates
Open the mapobservation + sensor887
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 accuracy59% within 1 km
≤100 m 19≤1 km 155≤10 km 105>10 km 18
297 georeferenced · 429 without coordinates
Open the institutions mapphysical evidence726
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 institutions45 of 78 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Pullman, US
93
Vancouver, CA
91
Moscow, US
77
Corvallis, US
70
Missoula, US
56
Chicago, US
33
Bronx, US
27
Victoria, CA
24
Arcata, US
20
Ann Arbor, US
15
Madison, US
12
DOI/NPS, Mount Rainier National Parklocation not on record
10
Portland, US
10
Cheney, US
9
Bozeman, US
9
Chongqing Museumlocation not on record
9
Boise, US
8
Tacoma, US
8
University of Alberta Museumslocation not on record
7
Anchorage, US
7
University of Stellenboschlocation not on record
6
Provo, US
6
San Angelo, US
5
Flagstaff, US
5
DOI/NPS, Greenbelt Parklocation not on record
4
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
4
SIHUlocation not on record
4
Moscow State Universitylocation not on record
4
HJAEFlocation not on record
4
Saint Louis, US
4
Riverside, US
3
Bloomington, US
3
Phoenix, US
3
Pacific Lutheran Universitylocation not on record
3
Claremont, US
3
Ashland, US
3
SLU Artdatabankenlocation not on record
3
ASUlocation not on record
2
KNFYlocation not on record
2
St. Paul, US
2
Bend, US
2
DOI/FWS, Kenai National Wildlife Refugelocation not on record
2
Montréal, CA
2
University of British Columbia, Herbariumlocation not on record
2
Tampa, US
2
STNFlocation not on record
2
Bureau of Land Management, Medford District Officelocation not on record
2
Delaware State University, Claude E. Phillips Herbariumlocation not on record
2
Dover, US
2
KNFSClocation not on record
2
Kew, GB
1
Auckland, NZ
1
University of British Columbialocation not on record
1
Johnson City, US
1
Research Collection of B. A. Bennettlocation not on record
1
Oregon State Universitylocation not on record
1
DOI/NPS, Olympic National Parklocation not on record
1
San Diego, US
1
Royal British Columbia Museumlocation not on record
1
Royal Ontario Museum, Green Plant Herbarium (TRT)location not on record
1
Meguro Parasitological Museumlocation not on record
1
Burlington, US
1
KNFHClocation not on record
1
BRNUlocation not on record
1
Knoxville, US
1
PRClocation not on record
1
SEINetlocation not on record
1
Toronto, CA
1
LDlocation not on record
1
CASlocation not on record
1
Wuzhou, CN
1
Austin, US
1
Christchurch, NZ
1
EL PASO, US
1
Pocatello, US
1
Portland, US
1
Caldwell, US
1
Canadian Department of Agriculturelocation not on record
1
78 institutions · 716 of 726 vouchered records shown · 10 without an institution code
09Environmental DNA16 detections
Where the DNA of Carex mertensii 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 found16
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 16 detections have coordinates
Open the map2 countries0
Slump slope along stream valley.On rocky-grassy slope below rock runnel and …
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 median12.3 °C 10.9–19.3
Seasonal swing summer↔winter19.8 °C
Max temp (day)17.3 °C 14.2–26.2
Min temp (night)9.20 °C 6.00–12.0
Precipitation66.8 mm/mo 34.1–133
Air humidity59.6 % 52.7–64.2
Moisture balance-53.9 mm/mo -111–28.9
Vapour deficit574 Pa 483–1,059
Wind speed2.70 m/s 1.80–5.40
Cloud cover39.8 % 32.7–49.4
CHELSA 1981–2010, ~9 km grid, at location & month of 8 detection points · 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 614 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI16 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics21 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗