Description
Data on alien (non-native) plant species surveys within the boundaries of disturbed sites within Yosemite National Park. Surveys were supplemented by quadrat-based subsampling of some campgrounds, camps, developments and corrals to obtain native/non-native species ratios. Surveys primarily targeted areas of human disturbance, such as campgrounds, corrals, developments, roads, trails and pastures, where alien plant species were most likely to be introduced and dispersed.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| AlienPlantSpeciesAssessment-YOSE.7z | Unknown | Compressed archive of files including data and documentation | Open resource |
| Alien_Plant_Species_Assessment-Yosemite_Readme.txt | Text | Table by table field definitions (metadata) | Open resource |
| Alien_Plant_Threat_Assessment-YOSE_Methods.pdf | Field methods used in 1998 and 1999 to collect alien plant species occurrence data in disturbed sites of Yosemite | Open resource | |
| AlienPlantThreatAssessment-YOSE_FieldForm1999.pdf | Field form used in 1999 | Open resource | |
| ALL_SURVEY_COORDS.csv | CSV | UTM coordinates for sites surveyed in 1998 and 1999 | Open resource |
| AREA_SURVEYS.csv | CSV | Survey data from campgrounds, developments, and corrals in Yosemite from 1998 and 1999 | Open resource |
| JFLORA.csv | CSV | Lookup table for codes used to represent vascular plant species recorded during alien plant species assessment surveys (nomenclature: Hickman. 1993. The Jepson Manual, 1st Edition) | Open resource |
| LINEAR_SURVEYS.csv | CSV | Data on plant species occurrence recorded during surveys of travel corridors (roads and trails) in 1998 and 1999 in Yosemite NP | Open resource |
| SHRUB_LINEINT1998.csv | CSV | Data on shrub intercept transects | Open resource |
| SITE.csv | CSV | Survey site descriptions, including location and environmental setting | Open resource |
| SUBSAMPLE_COVER1998.csv | CSV | Data from quadrat subsamples of campgrounds, developments, and corrals surveyed in 1998 | Open resource |
| SUBSAMPLE_COVER1999.csv | CSV | Data from quadrat subsamples of campgrounds, developments, and corrals surveyed in 1999 | Open resource |
| tblAccessioned_Plant_Specimens.csv | CSV | Herbarium label data from plant specimens collected during surveys of disturbed areas in Yosemite in 1998 and 1999. Specimens are housed at Yosemite National Park herbarium. | Open resource |
| TRAIL_USE_LEVEL.csv | CSV | Categorical use level assigned to trails surveyed in 1998 and 1999. Used levels supplied by Wilderness Office, Yosemite National Park in 1998. | Open resource |
| TRANSECT_LENGTH_1998.csv | CSV | Length (m) of transects randomly placed to subsample areas surveyed for alien plant species in Yosemite in 1998 | Open resource |
| TREE_CANOPY1998.csv | CSV | Data on tree canopy cover from point transects at alien plant survey sites in Yosemite in 1998 | Open resource |
| TREE_CANOPY1999.csv | CSV | Data tree canopy cover from point transects at sites surveyed for alien plant species in Yosemite in 1999 | Open resource |
| USGSQuad.csv | CSV | Lookup table for USGS quadrangle map codes used in SITE table | Open resource |
| VOLUNT.csv | CSV | Plant counts by species recorded by volunteers doing mechanical control (hand pulling, string trimmers) under the direction of National Park Service staff | Open resource |
| Gerlach_etal2003_AlienPlantThreatAssess-ofr02170.pdf | U.S. Geological Survey Open File Report summarizing and analyzing data resulting from alien plant surveys of disturbed areas in Yosemite, Sequoia, and Kings Canyon National Park. | Open resource |