uid=HFR,o=lter,dc=ecoinformatics,dc=org
all
public
read
doi:10.6073/pasta/5b5fcc0396264899417391c54e1af025
Simulating Intrastand Movement of Hemlock Woolly Adelgid at Harvard Forest 2009
Matt
Fitzpatrick
Evan
Preisser
https://orcid.org/0000-0002-8737-5619
Aaron
Ellison
https://orcid.org/0000-0003-4151-6081
Researcher
Jenna
Turner
Researcher
2023
English
The hemlock woolly adelgid (HWA), Adelges tsugae Annand (Hemiptera: Adelgidae), has spread rapidly across the eastern USA since its introduction from Japan 60 years ago, causing widespread mortality of both eastern hemlock [Tsuga canadensis (L.) Carriere] and Carolina hemlock [Tsuga caroliniana Engelm. (Pinaceae)]. Although HWA spread patterns have been repeatedly analyzed at regional scales, comparatively little is known about its dispersal potential within and between hemlock stands. As the small size and clonal nature of HWA make it nearly impossible to identify the source populations of dispersing individuals, we simulated intrastand HWA movement in the field by monitoring the movement of clumps of fluorescent powder that are slightly larger than HWA, but much easier to detect in the forest understory. Using three hemlock trees with three colors of fluorescent powder as source populations, we detected dispersal events at the farthest distances within our trapping array (400 m). However, more than 90% of dispersal events were less than 25 m. Dispersal patterns were similar from all three source trees and the distribution of dispersal distances in all cases could be described by lognormal probability density functions with mean dispersal distance of 12-14 m, suggesting that dispersal was relatively independent of location of source trees. In general, we documented tens of thousands of passive dispersal events in the forest understory despite the presence of a dense forest canopy. Thus, even under relatively light-wind conditions, particles of similar dimensions to HWA are capable of intra-stand movement, suggesting that a large population of HWA could rapidly infest other trees within several hundred meter radius, or beyond.
hemlock
hemlock woolly adelgid
invasive species
modeling
simulation
LTER controlled vocabulary
populations
disturbance
LTER core area
Harvard Forest
HFR
LTER
USA
HFR default
This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.
Creative Commons Zero v1.0 Universal
https://spdx.org/licenses/CC0-1.0.html
CC0-1.0
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf198
Simes Tract (Harvard Forest). Coordinates based on WGS84 datum.
-72.22
-72.21
+42.48
+42.47
200
200
meter
2009
2009
genus
Adelges
species
tsugae
hemlock woolly adelgid
complete
Information Manager
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
hf-im@lists.fas.harvard.edu
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
(978) 724-3595
https://harvardforest.fas.harvard.edu
For detailed methods, please see: Turner, J. L., M. C. Fitzpatrick, and E. L. Preisser. 2011. Simulating the dispersal of hemlock woolly adelgid in the temperate forest understory. Entomologia Experimentalis et Applicata 141:216–223.
Harvard Forest Long-Term Ecological Research
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
(978) 724-3595
https://harvardforest.fas.harvard.edu
https://ror.org/059cpzx98
pointOfContact
The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts.
National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210.
hf198-01-plotmap.csv
plotmap
hf198-01-plotmap.csv
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https://harvardforest.fas.harvard.edu/data/p19/hf198/hf198-01-plotmap.csv
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x coordinate
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y coordinate
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141
hf198-02-powder-data.txt
amount of powder trapped of each color for the two sampling periods
hf198-02-powder-data.txt
136298
b744c8ee0db09fbc34affe968a6dedb5
none
text
https://harvardforest.fas.harvard.edu/data/p19/hf198/hf198-02-powder-data.txt
document
hf198-03-mle-powder.txt
R code used to fit dispersal probability density functions using maximum likelihood.
hf198-03-mle-powder.txt
7573
8dcf1cdcc1277128b512ef7786e05992
none
R script
https://harvardforest.fas.harvard.edu/data/p19/hf198/hf198-03-mle-powder.txt
script
informatics
invasive
regional
short-term measurement
modeling