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Ecology Photo of the Month

Endangered Burke’s goldfields

This picture shows fruits of federally Endangered Burke’s goldfields (Lasthenia burkei), an annual species of the Sunflower family. It is identified by its one long pappus bristle and several short bristles. During surveys in 2010, Nomad Ecology botanists recorded a single population of this species within Lake Mendocino, which is owned and operated by the U.S. Army Corps of Engineers. Burke’s goldfields had not been seen in Mendocino County since 1886, when this species was first discovered by J.H. Burke.

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    Resources

    Digitized Field Survey Forms

     

    WETLAND DELINEATION [Revised: 07.02.07]
    Arid West Region Wetland Delineation Form     ( * see note below)

    U.S. Army Corps of Engineers’ (USACE) Environmental Laboratory “Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region”.

    Among the supplement’s features is the Wetland Determination Data Form, which includes worksheets to calculate the Dominance Test and Prevalence Index to determine whether hydrophytic vegetation indicators are present.

    Nomad developed a digital Adobe Acrobat XML PDF version of the Arid West Region’s Wetland Determination Data Form that performs the worksheet’s calculations (for all fields highlighted in grey) simultaneous to data entry.

     

     

    Among the digital Wetland Determination Data Form’s features are:

    • Automatic calculations for the Dominance Test and Prevalence Index worksheets based on user-entered data.
    •Automatic calculations to determine whether or not the hydrophytic vegetation indicators meet the Dominance Test and Prevalence Index based on user-entered data.
    • Automatic calculations of absolute cover within each stratum based on user-entered data.
    • Hierarchical tabbing to streamline data entry.

     

    *A full version of Adobe Acrobat is necessary in order to fill out, save, and print completed XML PDF survey forms; Adobe Acrobat Reader users will not be able to save forms to their computer.