Occurrence data of small rodent species from the Yamal peninsula (1958–2022)

Range shifts and changes in dominance of species in communities are among the major predicted impacts of climate change on ecosystems, supported by numerous modeling studies. While climate is changing particularly rapidly in the Arctic, little observational data is available to document predicted changes in the composition of communities, in particular from the large Russian tundra areas. Small rodents are a key component of tundra ecosystems implementing important ecological functions both as herbivores and as main prey for a whole guild of predators. Here we document changes over 60 years in occurrence of nine species of small rodents along a latitudinal gradient spanning from the forest-tundra ecotone to the high Arctic tundra on the Yamal Peninsula. All data were obtained using a single method: snap-trapping. In general, the occurrence of lemmings, specialized arctic endemics, decreased in the southern parts of the peninsula, whereas the occurrence of voles, representing boreal or w..., , , # Yamal small rodent occurrence

Presented dataset include information about occurrence of small rodent species during trapping events in Yamal peninsula, north-west Siberia, Russia conducted in 1958-2022.

## Description of the data and file structure

The file entitled \"Sokolova_et_al_Yamal_small_rodent_occurrence.xlsx\" contains the:

i) Trapping ID - code of particular trapping event;

ii) coordinates (latitude and longitude) of the trapping event

iii) bioclimatic tundra subzone for each trapping event

iv) year of particular trapping event

v) occurrence (presence - 1; absence - 0) of 8 small rodent species during a particular trapping event.

The file contains all the data needed to reproduce Figures 1, 2, and 3 shown in Sokolova et al. (2024). It will also allow the user to reproduce Figures S1, S2, and S3.

If you have any questions, please, feel free to contact us: [[e-mail]](mailto:nasokolova@yandex.r)