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Title: Increased water yield due to the hemlock woolly adelgid infestation in New England

Journal Article · · Geophysical Research Letters
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [4];  [4]; ORCiD logo [5]
  1. Department of Geography Indiana University Bloomington Bloomington Indiana USA, Department of Earth and Environment Boston University Boston Massachusetts USA
  2. Department of Geography Indiana University Bloomington Bloomington Indiana USA
  3. School for the Environment University of Massachusetts Boston Boston Massachusetts USA
  4. Harvard Forest Harvard University Petersham Massachusetts USA
  5. School of Engineering and Applied Sciences and Department of Earth and Planetary Sciences Harvard University Cambridge Massachusetts USA

Abstract Over the past few decades, a hemlock woolly adelgid (HWA) infestation has significantly affected eastern hemlock ( Tsuga canadensis ) in the eastern U.S., and warmer winters are expected to promote a continued northward expansion in the future. Here we report a water yield increase due to the HWA infestation in New England, U.S. Since the first observation in 2002, peak growing season evapotranspiration over a hemlock‐dominated area has decreased by 24–37% in 2012 and 2013. Over the same time period, the water yield from the study catchment significantly increased as compared to an adjacent catchment with less hemlock cover. The net increase was estimated to be as much as 15.6% of annual water yield in 2014 based on an ecohydrological modeling analysis. This study indicates that the ongoing hemlock decline is also largely altering hydrological regimes in the northeastern U.S.

Sponsoring Organization:
USDOE
OSTI ID:
1402332
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 5 Vol. 44; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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