Department of Agriculture
Dataset Description
[ 2023-07-10 - Supersedes version 1, https://doi.org/10.15482/USDA.ADC/1528679 ]
The Scotch broom gall mite, Aceria genistae, attacks Cytisus scoparius (Scotch broom), an invasive shrub in California, USA. Feeding causes galls (localized tissue distortion) but the effect of A. genistae on overall host vigor and reproduction has not been assessed. We collected data on plant parts between two plants partitioned between two groups, heavily or lightly galled plants, at three northern California sites. Plant parts were measured in the field (plant height, plant width) and others were recorded after harvesting plants (stem, leaf, gall, seed pod, seeds, etc.) and drying them in an oven to a constant weight. Data were natural log transformed. Columns represent (in order): observation number (obs), plant identifier (plantID), Site, treatment (heavy or light galling), Diameter at soil (lnDAS), height, leaf weight (lnLeaf), stem weight (lnStem), fruit weight (lnFruit), gall weight (lnGalls), number of pods (lnpods), seed weight (lnseeds), number of seeds per plant (lnseedsplant), canopy volume (lnVol), canopy diameter at its widest point (lnWidest), canopy area (lnCanopyArea), total biomass of all plant fractions combined (lnTotal), number of stem branches (lnResource).
Resources in this dataset:
- Resource Title: Scotch broom biomass dataset File Name: Scotch broom gall mite.csv Description: Dataset is comma deliminated
Organization: Department of Agriculture
Organization URL: https://catalog.data.gov/organization/usda
Last updated: 2025-11-21
Tags: ARS, Aceria genistae, NP304, Scotch broom, allometry, data.gov, weed