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

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).

Data and Resources

Field Value
accessLevel public
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datagov_dedupe_retained 20220721212438
identifier USGS:592726f6e4b0b7ff9fb5dc9d
metadata_type geospatial
modified 20211013
old-spatial {"type": "Polygon", "coordinates": [[[-123.56071, 48.147], [-123.56071, 48.1477], [ -123.56009, 48.1477], [ -123.56009, 48.147], [-123.56071, 48.147]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash f5d2e2b983fc24b1882c54779cec4b444385bf5e
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-123.56071, 48.147], [-123.56071, 48.1477], [ -123.56009, 48.1477], [ -123.56009, 48.147], [-123.56071, 48.147]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • clallam-county
  • dam-removal
  • elwha-river
  • environment
  • estuary
  • geo
  • geoscientificinformation
  • geospatial-datasets
  • geoss
  • national
  • north-america
  • olympic-peninsula
  • port-angeles
  • river
  • species-richness
  • state-of-washington
  • strait-of-juan-de-fuca
  • united-states
  • united-states-of-america
  • usgs-592726f6e4b0b7ff9fb5dc9d
  • vegetation
  • wetland-ecosystems
isopen False
license_id notspecified
license_title License not specified
maintainer Patrick B. Shafroth
maintainer_email shafrothp@usgs.gov
metadata_created 2025-11-21T06:19:42.524041
metadata_modified 2025-11-21T06:19:42.524045
notes 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).
num_resources 2
num_tags 25
title Riparian vegetation species richness in the Elwha River estuary, Washington, in 2007 and 2014