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    • Cascades Frog and eDNA Inventory at Lassen Volcanic National Park - Open Format Dataset

    Metadata Updated: June 4, 2024

    The Cascades frog (Rana cascadae) is one of two frog species known to occur historically in Lassen Volcanic National Park (LAVO) in Northern California. However, no Cascades frogs have been documented in LAVO for several decades, despite repeated surveys. Threats to the species include natural predators, introduction of fish into historically fishless habitats, diseases like fungal pathogens, airborne drift of pesticides from nearby agricultural areas, ultraviolet (UV-B) radiation, wildfires, and habitat loss from human development and climate change. Objectives of this project were to conduct surveys for Cascades frogs at LAVO using both visual encounter surveys (VES) and environmental DNA (eDNA) surveys at locations with potential for reintroduction, conduct VES and eDNA surveys for potential predators (rainbow trout, brook trout, brown trout, and leeches) to determine locations unsuitable for reintroduction, and to develop a suitability model to assess reintroduction potential within LAVO for Cascades frogs. Fifty locations around LAVO were sampled during this study. Suitability for Cascades frogs was ranked according to suitable vegetation availability, elevation, climatic factors, and perennial water availability. Projected climate data was used to derive future climate suitability for Cascades frogs within and around LAVO. No Cascades frog egg masses, larvae, or adults were detected during VES or eDNA sampling within LAVO in 2021. Pacific tree frogs were observed at 18 sites, indicating suitable larval frog habitat at these sites. At 12 of these 18 sites, trout were not detected with either VES or eDNA sampling and leeches were only detected in two locations. The eDNA survey did not appear to be an effective way to detect leeches, but this method was effective for trout species and Cascades frogs.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    References

    https://irma.nps.gov/DataStore/Reference/Profile/2299791

    Dates

    Metadata Created Date October 4, 2023
    Metadata Updated Date June 4, 2024

    Metadata Source

    Harvested from DOI EDI

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date October 4, 2023
    Metadata Updated Date June 4, 2024
    Publisher National Park Service
    Maintainer
    @Id http://datainventory.doi.gov/id/dataset/3e4cc5a1d9dc4932ab806ef4d83ef399
    Identifier NPS_DataStore_2299791
    Data First Published 2023-07-18T12:00:00Z
    Data Last Modified 2023-07-18
    Category Data Package
    Public Access Level public
    Bureau Code 010:24
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://datainventory.doi.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Harvest Object Id 629f68dc-da2f-4a62-ab13-47937038215c
    Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
    Harvest Source Title DOI EDI
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2299791
    Old Spatial -121.5775,40.4091,-121.2467,40.585
    Program Code 010:118, 010:119
    Publisher Hierarchy White House > U.S. Department of the Interior > National Park Service
    Related Documents https://irma.nps.gov/DataStore/Reference/Profile/2299791
    Source Datajson Identifier True
    Source Hash 9e2aeb04b473cf9d7acd05dbd9c687589935cd8eadb54634d338d78528e89a00
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -121.5775, 40.4091, -121.5775, 40.585, -121.2467, 40.585, -121.2467, 40.4091, -121.5775, 40.4091}
    Temporal 2021-06-22T12:00:00Z/2021-07-01T12:00:00Z

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