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    • Rare Plant Inventory at San Juan Island National Historical Park - Open Format Dataset

    Metadata Updated: December 29, 2025

    The aim of this project is to obtain information on rare plant species of interest in two tracts of land that were recently acquired on San Juan Island, WA by the National Park Service. This information will be used to inform a vegetation management plan that will be developed for the San Juan National Historical Park. The tracts of land that are to be investigated are Mitchell and Westcott Bay in the English Camp unit. Due to the size of the two parcels and time constraints, this project did not include formal sampling methods such as transects or grids. Instead, the focus of the surveying was on specific vegetation types with the understanding that certain species may be found in specific vegetation types. Vegetation polygons were then searched via “focused intuitive control.” We used the current trail network as our sampling path, surveying more intensely in areas where rare species are more likely and briefly surveying unlikely habitats. We also focused on the trail networks because the most likely visitor impacts are along trails and where most vegetation management will likely occur. Out of the targeted list of twenty-seven species, we found three rare plant species in the Mitchell Hill unit: true baby stars (Leptosiphon minimus), Indian valley brodiaea (Brodiaea rosea), and shortspur white plectritis (Plectritis brachystemon). We did not observe any rare vascular plant species of conservation concern on the Westcott Parcel, and most the property has extensive evidence of prior human use and habitat alteration.

    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

    Dates

    Metadata Created Date December 13, 2025
    Metadata Updated Date December 29, 2025

    Metadata Source

    Harvested from DOI NPS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 13, 2025
    Metadata Updated Date December 29, 2025
    Publisher National Park Service
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/nps-datastore-2299715
    Data First Published 2023-07-10T00:00:00Z
    Data Last Modified 2023-07-10T00:00:00Z
    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://ddi.doi.gov/nps-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
    Harvest Object Id d2817ec4-e56d-4576-860c-30fd8418afd8
    Harvest Source Id d917c1a9-26b7-43ea-b8c5-c77ec750a850
    Harvest Source Title DOI NPS DCAT-US
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2299715
    Program Code 010:119, 010:118
    Source Datajson Identifier True
    Source Hash a67dd0664b638d880a42f2eb93307485d7b4ca07bdd497959a97fb9c9f2c6dab
    Source Schema Version 1.1

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