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Riparian vegetation data used for comparing sampling methods along the Colorado River, Grand Canyon, Arizona

Data for journal manuscript: A comparison of riparian vegetation sampling methods along a large, regulated river


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Palmquist, E.C., 2019, Riparian vegetation data used for comparing sampling methods along the Colorado River, Grand Canyon, Arizona: U.S. Geological Survey data release,


These data were collected as part of a methodologial comparison for collecting riparian vegetation data. Two common methods for collecting vegetation data were used: line-point intercept and 1m2 ocular quadrats (visual cover estimates). At each site and transect, both methods were used to collect cover and composition data by four different observers. The same transects and quadrats were utilized for both methods and all observers. Field data collected included percent cover for total living foliar cover, each plant species encountered, litter, dead plant material that is still standing, and ground cover features (biological soil crust, rock, sand, and fine soil particles). Line-point intercept data were collected at 25 cm intervals [...]


Point of Contact :
Emily C Palmquist
Publisher :
U.S. Geological Survey
Originator :
Emily C Palmquist
Metadata Contact :
Emily C Palmquist
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Southwest Biological Science Center
USGS Mission Area :

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The purpose of this data was to compare vegetation sampling methods in a dense, species rich riparian context to 1) assess if ocular or LPI sampling methods result in significant differences in cover among observers, 2) identify if the ocular or LPI sampling method has lower variability among observers, 3) assess which method best records the high diversity of riparian areas, and 4) examine how the cover estimates generated from these methods differ.


The author(s) of these data request that data users contact them regarding intended use and to assist with understanding limitations and interpretation. 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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.

Additional Information


Type Scheme Key
DOI doi:10.5066/P9N2RBIC

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