An assessment of the limiting factors for boreal toads in the LaBarge Creek watershed

The LaBarge Creek watershed, located within the Bridger-Teton National Forest, historically was home to a robust population of boreal toads. However, since 2009, surveys have revealed drastically reduced numbers and evidence of low recruitment. The reason for their decline is unknown, however, this population faces multiple stressors including disease, habitat loss from a restoration treatment, livestock grazing, past wildfires, and proximity to roads.

The aim of this research is to assess the habitats available to boreal toads in LaBarge and uncover the factors responsible for population declines.

Our objectives are to:

1. Investigate boreal toad use of beaver ponds and identify habitat characteristics that predict use.
2. Quantify pond and landscape attributes associated with breeding, number of egg masses, hatching success, and metamorphosis.
3. Assess microhabitat use during the breeding and summer foraging periods by toads and whether habitat choices influence survival or Bd prevalence and persistence.

Field work and data collection will begin May 2023.