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Data Extent

Data from: Niche partitioning and coexistence of parasitoids of the same feeding guild introduced for biological control of an invasive forest pest

The data set is collected to evaluate if two parasitoids (Spathius galinae and Tetrastichus planipennisi), introduced for biocontrol of the invasive emerald ash borer (EAB), Agrilus planipennis, into North America have established niche-partitioning, co-existing populations following their sequential or simultaneous field releases to 12 hard-wood forests located in Midwest and Northeast regions of the United States. Ash trees of various sizes (large, pole-size and saplings) were debarked meter by meter in early spring of 2019 (Michigan sites) or fall of 2019 (Northeast states: Connecticut, Massachusetts and New York). Detailed data collection procedures can be found in the associated publication in Biological Control.

Release Date
Spatial / Geographical Coverage Area
POINT (-84.488983154297 42.644945030674)
POINT (-84.395599365234 42.757978500354)
POINT (-84.535675048828 42.786204711686)
POINT (-84.560394287109 42.784188980349)
POINT (-84.541168212891 42.695431828485)
POINT (-84.543914794922 42.685337749656)
POINT (-72.990417480469 41.617239022247)
POINT (-72.594909667969 41.592594235)
POINT (-73.917388916016 41.952213608198)
POINT (-73.997039794922 41.856137222605)
POINT (-72.189788818359 41.923610229056)
Ag Data Commons
Spatial / Geographical Coverage Location
Total 12 sites in two regions: 6 sites in Michigan and 6 sites in Northeast States (Connecticut, Massachusetts, and New York)
Temporal Coverage
April 24, 2019 to October 28, 2019
Data Dictionary
Contact Name
Duan, Jian J.
Contact Email
Public Access Level
Program Code
005:040 - Department of Agriculture - National Research
Bureau Code
005:18 - Agricultural Research Service