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| Value | Definition |
|---|---|
| Dunegrass | Plant communities dominated by Leymus mollis (American dunegrass) with generally high diversity of forb species. |
| Emergent marsh transition | Plant 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 forest | Mature 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 shrub | Plant 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 forest | Young deciduous forest composed primarily of Salix spp. (willow species) and Alnus rubra (red alder). |
| Value | Definition |
|---|---|
| before | before dam removal (sampled in 2007) |
| during | during dam removal (sampled in 2014) |
| Range of values | |
|---|---|
| Minimum: | 6 |
| Maximum: | 40 |
| Units: | number of species |
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.
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.
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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.
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.
| Data format: | comma-delimited text Size: 0.008 |
|---|---|
| Network links: |
https://www.sciencebase.gov/catalog/file/get/592726f6e4b0b7ff9fb5dc9d https://doi.org/10.5066/F75B00N4 |