Colombian Oldfield Mouse vs Common Saltwort

Thomasomys dispar compared with Salsola kali

Key Differences

• Colombian Oldfield Mouse is Data Deficient while Common Saltwort is Least Concern.

Taxonomic Classification

Rank	Colombian Oldfield Mouse	Common Saltwort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Rodentia (Rodents)	Caryophyllales (Caryophyllales)
Family	Cricetidae	Amaranthaceae
Genus	Thomasomys	Salsola
Species	Thomasomys dispar	Salsola kali

Conservation Status

Colombian Oldfield Mouse

DD — Data Deficient

Common Saltwort

LC — Least Concern

Physical Characteristics

Attribute	Colombian Oldfield Mouse	Common Saltwort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colombian Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Common Saltwort

Habitat

Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (Lesotho, Namibia, South Africa), Europe (6 countries), North America (Canada, Mexico, United States), and South America (4 countries).

Colombian Oldfield Mouse

<em>Thomasomys dispar</em>, commonly known as the Colombian Oldfield Mouse, is a small rodent species belonging to the genus <em>Thomasomys</em> within the family Cricetidae. This species is classified as Data Deficient, indicating that insufficient information is currently available to evaluate its conservation status with confidence. It has been documented in Colombia, where it inhabits diverse terrestrial and aquatic-adjacent environments. Members of the genus <em>Thomasomys</em> are typically associated with high-altitude Andean habitats, including páramo grasslands, shrublands, and montane forest edges, where they occupy ground-level microhabitats and burrow in soft soils. These mice are generally omnivorous, consuming seeds, plant material, and invertebrates, though specific dietary data for <em>Thomasomys dispar</em> have not been recorded. Biological traits of this species remain poorly documented in the scientific literature. The Data Deficient classification highlights the need for targeted surveys in Colombian Andean regions to determine population size, distribution, and the ecological requirements of this poorly known rodent.

Common Saltwort

<em>Salsola kali</em>, common saltwort or prickly glasswort, is an annual herb in the family Amaranthaceae, with a broad native distribution spanning coastal and inland saline habitats across Africa, Europe, and Asia, and widely introduced in North and South America where it has become an invasive species in many regions. The plant typically inhabits sandy beaches, coastal dunes, saline inland steppes, disturbed ground, roadsides, and agricultural margins. It is highly salt-tolerant, accumulating sodium in its tissues, a trait that historically made it a source of soda ash used in glassmaking, giving rise to common names such as glasswort. Common saltwort produces small, succulent, spine-tipped leaves and inconspicuous flowers, and when dry the plant breaks off at the base and tumbles in the wind, dispersing seeds widely — a behavior that has given rise to the iconic image of the tumbleweed in North American popular culture. The species is assessed as Least Concern on the IUCN Red List. It provides food for birds and invertebrates in coastal habitats. In North America it has expanded significantly into disturbed arid habitats, where it is considered invasive. Biological traits such as average lifespan, body measurements, and dietary data remain poorly documented in standardized databases.