Data on gall wasp abundance and biomass on valley oak and blue oak trees in California

Gall abundance and biomass was recorded on marked valley oak and blue oak individuals throughout California. Galls, mostly caused by cynipid gall wasps, were identified to species. Sampling effort per tree was recorded as the number of leaves searched for gall wasps. Leaves were taken from two branches per tree using pole pruners, and total galls per tree were summed in each observation. Annual observations of galls on each tree were made from 2000-2006.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5dd2f2d2e4b0695797628359
metadata_type geospatial
modified 20200820
old-spatial -126.2109, 32.3985, -113.7305, 42.8115
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash ae992e1a2d12f286377f18b822d415925040f459
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-126.2109, 32.3985], [-126.2109, 42.8115], [ -113.7305, 42.8115], [ -113.7305, 32.3985], [-126.2109, 32.3985]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • biota
  • ckan
  • cynipidae
  • gall-wasp
  • geo
  • geoss
  • insect-outbreaks
  • long-term-survey
  • national
  • north-america
  • oak
  • quercus
  • spatial-synchrony
  • united-states
  • usgs-5dd2f2d2e4b0695797628359
isopen False
license_id notspecified
license_title License not specified
maintainer Ian Pearse
maintainer_email ipearse@usgs.gov
metadata_created 2025-11-20T04:37:13.405922
metadata_modified 2025-11-20T04:37:13.405926
notes Gall abundance and biomass was recorded on marked valley oak and blue oak individuals throughout California. Galls, mostly caused by cynipid gall wasps, were identified to species. Sampling effort per tree was recorded as the number of leaves searched for gall wasps. Leaves were taken from two branches per tree using pole pruners, and total galls per tree were summed in each observation. Annual observations of galls on each tree were made from 2000-2006.
num_resources 2
num_tags 17
title Data on gall wasp abundance and biomass on valley oak and blue oak trees in California