File:Detweiler Run Natural Area (Revisited) (21) (10544788874).jpg

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Hemlock woolly adelgid (Adelges tsugae), Huntingdon County, within the Detweiler Run Natural Area of Rothrock State Forest.

The hemlock woolly adelgid is an exotic insect pest that has wreaked havoc on forest and stream ecosystems across eastern North America. Small, white, cottony sacs at the base of the needles indicate the insects’ presence.

Most of Rothrock State Forest is infested, even at the highest elevations. The infestation is especially severe along the northern stretch of Bear Meadows Road; many trees there are dead or dying. In the Detweiler Run Natural Area, the trees along Detweiler Road and the pipeline swath are the most damaged. The trees near Detweiler Run (including the old-growth specimens) seem to be faring better.
Date
Source Detweiler Run Natural Area (Revisited) (21)
Author Nicholas A. Tonelli from Northeast Pennsylvania, USA
Camera location40° 43′ 09.44″ N, 77° 44′ 49.6″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Nicholas_T at https://flickr.com/photos/14922165@N00/10544788874. It was reviewed on 10 August 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

10 August 2017

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current21:51, 10 August 2017Thumbnail for version as of 21:51, 10 August 20174,730 × 2,635 (5.07 MB)XXN (talk | contribs)Transferred from Flickr via Flickr2Commons

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