USA National
Phenology
Network
Expands Daily
Forecasts
to Twelve
Insect Pests
By Theresa Crimmins, Kathy Gerst,
Lee Marsh, Erin Posthumus, Alyssa
Rosemartin, and Jeff Switzer
In 2018, the USA National Phenology Network
(USA-NPN) released a suite of "Pheno
Forecast" map products for five insect
pests (please see the article about this in
the May/June 2018 issue of City Trees).
Pheno Forecast maps indicate, for a specified day,
the status of the insect's target life-cycle stage
in real time across the contiguous United States.
Maps are available via the USA-NPN visualization
tool (www.usanpn.org/data/visualizations) and
the USA-NPN website (www.usanpn.org/data/
forecasts). Pheno Forecast maps are based on
accumulated temperature thresholds associated
with critical life-cycle stages of the target insects.
Pheno Forecast map for emerald ash borer for
April 18, 2019 (generated on April 12, 2019).
Colors indicate the status of adult emergence.
The status of a location is determined by
comparing the local Growing Degree Days
accumulation to a published heat accumulation
threshold for the life-cycle stage. (Please see
the article, "Growing Degree Day Maps Pinpoint
Pest Management Windows" in the Jan/Feb
2018 issue of City Trees.)
12 CityTREES
