Ohio mammals

Southern Bog Lemming in Ohio

Synaptomys cooperi

Native to Ohio SNR Unranked in Ohio

Not listed as nonindigenous in Ohio by USGS NAS; native to its Ohio range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Southern Bog Lemming in Ohio, by the numbers

Rare in Ohio 53rd most recorded of 75 mammals logged in Ohio

103 occurrence records
3 with iNaturalist photos

103 total records count every Ohio occurrence from GBIF and iNaturalist; the monthly chart covers the 98 records with a full observation date.

When to look for the Southern Bog Lemming in Ohio

Most sightings fall in November to January.

98 Ohio occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Ohio records (table)
MonthRecords
January19
February8
March14
April8
May11
June7
July0
August2
September1
October1
November12
December15

Monthly southern bog lemming occurrence records (iNaturalist and GBIF) in Ohio.

Seasonality

Year-round in Ohio, with recorded sightings peaking in November–January, with a smaller rise in March.

Occurrence map

Where Southern Bog Lemming has been recorded in Ohio

103 records mapped · zoom and drag to explore

103 Ohio records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Mentor Marsh 1

Protected places with the most southern bog lemming sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Ohio

CountyRecords
Clermont County 26
Fairfield County 21
Hamilton County 11
Brown County 7
Franklin County 6
Athens County 5
Hocking County 5
Gallia County 3
Madison County 3
Licking County 2
Lake County 1
Delaware County 1
12 other counties 12

The complete county distribution, spread across 24 Ohio counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The southern bog lemming favors damp meadows, bog edges, and thick, mossy ground cover rather than deep forest, and it gets around by cutting short grass runways through vegetation instead of digging the extensive burrow systems true voles rely on. Its 102 Ohio records skew toward sites like Cuyahoga Valley National Park with the right wet, grassy understory.

Records drop to almost nothing in July, an odd gap for a small rodent, then pick back up through fall and winter. Ohio hasn’t assigned the species a numeric NatureServe rank (SNR, unranked), and its patchy, damp-habitat needs likely explain the record pattern better than any change in observer effort.

Occurrence data from iNaturalist and GBIF.

More mammals in Ohio in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"