Riparian vegetation species richness in the Elwha River estuary, Washington, in 2007 and 2014

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Frequently anticipated questions:


What does this data set describe?

Title:
Riparian vegetation species richness in the Elwha River estuary, Washington, in 2007 and 2014
Abstract:
This portion of the data release presents riparian plant species richness (number of unique taxa) data from plots sampled in the Elwha River estuary, Washington, in 2007 and 2014. In August 2007, we established 21 vegetation plots within the study area in a stratified random fashion, with three to five plots in five of the vegetation cover types denoted in the habitat classification maps: mixed riparian forest, willow-alder forest, riparian shrub, emergent marsh/marsh-shrub transition, and dunegrass. Each plot was 100 square meters, usually 10 m x 10 m, but in areas where the vegetation patch was narrow, plots were either 4 m x 25 m or 5 m x 20 m. We visually estimated percent cover by species of all vascular plants within one of ten cover classes and tallied the number of unique taxa to estimate total species richness in each plot. We resampled all plots in August 2014. Plant species richness data are provided in a comma-delimited spreadsheet (.csv).
Supplemental_Information:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Shafroth, Patrick B., 2017, Riparian vegetation species richness in the Elwha River estuary, Washington, in 2007 and 2014: data release 10.5066/F75B00N4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Foley, Melissa M., Shafroth, Patrick B., Bierne, Matthew M., Paradis, Rebecca, and Ritchie, Andrew C., 2017, Ecological parameters in the Elwha River estuary before and during dam removal: data release 10.5066/F75B00N4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -123.56071
    East_Bounding_Coordinate: -123.56009
    North_Bounding_Coordinate: 48.1477
    South_Bounding_Coordinate: 48.147
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: Aug-2007
    Currentness_Reference:
    observed
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: tabular digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    Elwha_riparian_veg_richness.csv
    Table containing attribute information associated with the data set. (Source: Producer defined)
    PlotNumber
    Vegetation plot number (Source: Producer defined) alpha numeric codes used to uniquely identify individual vegetation plots
    CoverType
    Vegetation type descriptor (Source: Producer defined)
    ValueDefinition
    DunegrassPlant communities dominated by Leymus mollis (American dunegrass) with generally high diversity of forb species.
    Emergent marsh transitionPlant assemblages including relatively pure emergent marsh plants such as Juncus spp. (rushes), Carex spp. (sedges), Potentilla anserina (Pacific silverweed), Rumex salicifolius (willow dock), and Eleocharis palustris (spike rush). In addition, this vegetation cover type includes vegetation that typically occurs between the narrow bands of emergent marsh vegetation that are subject to regular and relatively large tidally-driven water level fluctuations and patches of riparian shrub or riparian forest that typically are inundated by river flooding vs. tidal fluctuations.
    Mixed riparian forestMature forests composed of deciduous and coniferous trees with shrub understory. Common overstory trees include Acer macrophyllum (bigleaf maple), Populus balsamifera ssp. trichocarpa (black cottonwood), Alnus rubra (red alder), Pseudotsuga menziesii (Douglas-fir), Thuja plicata (western red cedar), and Abies grandis (grand fir).
    Riparian shrubPlant assemblages characterized by high shrub cover, including: Rosa nutkana (Nutka rose), Rosa pisocarpa (clustered wild rose), Crataegus douglasii (black hawthorne), Lonicera involucrata (black twinberry), Malus fusca (Pacific crab apple), Oemleria cerasiformis (Indian-plum), Rubus spectabilis (salmonberry), and Symphoricarpos albus (common snowberry).
    Willow-alder forestYoung deciduous forest composed primarily of Salix spp. (willow species) and Alnus rubra (red alder).
    Year
    descriptor of time when vegetation plot was sampled, relative to dam removal (Source: Producer defined)
    ValueDefinition
    beforebefore dam removal (sampled in 2007)
    duringduring dam removal (sampled in 2014)
    TotalRichness
    total number of unique vascular plant species within the vegetation plot (Source: Producer defined)
    Range of values
    Minimum:6
    Maximum:40
    Units:number of species
    Entity_and_Attribute_Overview:
    The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Patrick B. Shafroth
  2. Who also contributed to the data set?
    Matt Beirne and Rebecca Paradis (Lower Elwha Klallam tribe) contributed to all aspects of this work. Tracy Fuentes, Cindy Pritekel, and Vanessa Beauchamp helped with the 2007 vegetation data collection and analysis. Jarrett Schuster, Cody Thomas, and Jamie Michel helped with 2014 vegetation data collection. Aaron Freeman helped with planform habitat mapping and metadata creation.
  3. To whom should users address questions about the data?
    Patrick B. Shafroth
    U.S. Geological Survey, Southwest Region
    Research Ecologist
    2150 Centre Avenue Bldg C
    Fort Collins, CO
    United States

    970-226-9327 (voice)
    970-226-9230 (FAX)
    shafrothp@usgs.gov

Why was the data set created?

Data were obtained to assess the change in plant species richness in the Elwha estuary following the removal of two dams on the Elwha River between 2011 and 2014.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: Aug-2007 (process 1 of 3)
    Plant species richness data (total number of unique species within each vegetation plot) were derived from vegetation plot sampling and subsequent plant identification. Vegetation plots were randomly placed within five different vegetation types. The area of each vegetation plot was 100 square meters. Data were collected and plants identified in August 2007 and August 2014. Vegetation plots were marked with metal stakes and located with global positioning system in 2007 and the same locations were relocated in 2014.
    Date: 19-Jul-2018 (process 2 of 3)
    Keywords section of metadata edited for consistency across the USGS Pacific Coastal and Marine Science Center and to further optimize discovery in search engines and data catalogs. Metadata was modified to bring up to current USGS PCMSC standards. Minor typos were corrected. No data information was changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Geologist
    2885 Mission Street
    Santa Cruz, CA
    USA

    (831) 460-7545 (voice)
    scochran@usgs.gov
    Date: 05-Sep-2018 (process 3 of 3)
    Corrected Point of Contact and Metadata Contact phone number prefix. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?
    Foley, Melissa M., Warrick, Jonathan A., Ritchie, Andrew, Stevens, Andrew W., Shafroth, Patrick B., Duda, Jeffrey J., Beirne, Matthew M., Paradis, Rebecca, Gelfenbaum, Guy, McCoy, Randall, and Cubley, Erin S., 2017, Coastal habitat and biological community response to dam removal on the Elwha River: Ecological Monographs, Ecological Society of America, Washington DC.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Species richness values depend on accurately discerning distinct plant species. Many species can be identified accurately in the field, based on the previous knowledge and expertise of the observers. When there was uncertainty, plant specimens were collected and identified in the laboratory using dichotomous keys. In some cases, plant specimens were taken to the University of Washington herbarium to confirm species identification.
  2. How accurate are the geographic locations?
    A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
  3. How accurate are the heights or depths?
    A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.
  4. Where are the gaps in the data? What is missing?
    The data set represents species richness in August 2007 and August 2014 within sample plots within the Elwha estuary study area (see Spatial_Domain information).
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None.
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and the Lower Elwha Klallam Tribe as the originators of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    United States

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? These data are available in comma-delimited (.csv) format (Elwha_riparian_veg_richness.csv), which also includes CSDGM FGDC-compliant metadata.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 05-Sep-2018
Metadata author:
USGS Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission St
Santa Cruz, CA
USA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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