• Long-term trends in the avifauna of the southern Appalachians: disentangling climate change from habitat change - Dataset

    Metadata Updated: March 17, 2021

    Field Methods: The proposed research will address the following questions:

    Q1. What is the frequency, volume, and orientation of LWD in GSMNP streams? Q2. What is the relative dominance of individual versus mass mortality in LWD recruitment?

    To address these questions, I will conduct intensive fieldwork on three streams within the park (Le Conte Creek, Baskins Creek, and Roaring Fork), which are all in the drainage area of the fire.

    Q1: I will inventory all LWD for a 1-km segment of each stream. To qualify as LWD, the wood must meet the minimum dimensions (1 m long, 10 cm in diameter), must be in the active channel (the portion of the stream channel between the banks, where there is evidence that water flows at least every 1-2 years), and must be dead wood. The specific field measurements I will make include: 1) Location: I already own a survey-grade real-time kinematic global positioning system (RTK-GPS), which I will use to record locations of each piece of LWD. For LWD jams, which consist of multiple pieces of LWD that have accumulated together, I will record the location of the jam. The advantage of using the RTK-GPS is that it is highly accurate (~10 cm) and quick to record points. Also, while handheld GPS units often fail to fix a location because of poor satellite reception under dense vegetation canopies, my unit consists of a base station and a rover. The base station is set up in an open area with good satellite reception, and the rover is carried to measure points. The base station and rover can be as much as half-a-mile apart and do not require line-of-sight. If the GPS fails to get adequate satellite reception, I will instead measure relative positions of LWD using longitudinal and cross-sectional tapes. 2.) Dimensions: I will use a tape to measure the length and diameter of each LWD piece. For LWD jams, I will estimate the overall volume of the jam and the length and diameter of key pieces (the pieces that serve as anchors for additional LWD). 3) Orientation: I will note the angle at which each LWD piece is oriented (ranging from 0° for pieces oriented parallel to flow to 90° for those oriented perpendicular to flow).

    Q2: I will use the method of Piégay et al. (2017) determine the likely source of recruitment of each LWD piece based on its condition. The most important characteristic will be whether it has visible burn marks or not. Also, I will record whether it has intact limbs and root-wads and if there is evidence of local bank failure, which is an indication that it was likely recruited recently by undercutting of the bank. Significant decay is a sign that the piece has been dead for many years and is a “legacy” rather than recent recruitment. Finally, when possible to determine, I will note whether the piece is from a coniferous or hardwood species. These field notes will be supplemented with photographs of each LWD piece or jam.

    Access & Use Information

    Restricted: This dataset can only be accessed or used under certain conditions. License: No license information was provided.

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    Metadata Created Date March 17, 2021
    Metadata Updated Date March 17, 2021

    Metadata Source

    Harvested from NPS-Harvest - NRSS Data Store

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 17, 2021
    Metadata Updated Date March 17, 2021
    Publisher National Park Service
    Unique Identifier Unknown
    Identifier NPS_DataStore_2267251
    Data First Published 2019-11-05
    Data Last Modified 2019-11-05
    Rights The information resource is proprietary and/or copyrighted. Access to this information by the public is very limited. Please contact the associated Point of Contact regarding additional use constraints and requirements for obtaining the information.
    Category Generic Dataset
    Public Access Level restricted public
    Bureau Code 010:24
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID D:\IRMA\DataStore\Application\OpenData\v1.1\NPS-DataStore.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 84287206-1902-4c03-b3fe-502b45d98ac7
    Harvest Source Id a73e9b95-126c-4791-a8f2-46fc064cdc62
    Harvest Source Title NPS-Harvest - NRSS Data Store
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2267251
    Program Code 010:118, 010:119
    Related Documents https://irma.nps.gov/DataStore/Reference/Profile/2267251
    Source Datajson Identifier True
    Source Hash 8d4a153965144835665d14966a50d90eefd8c7aa
    Source Schema Version 1.1
    Spatial -84.01389,35.4269066,-82.99805,35.8414
    Temporal 2012-06-04/2013-06-28

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