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Author Siddig, Ahmed A. H. ♦ Ochs, Alison
Source Directory of Open Access Journals (DOAJ)
Content type Text
Publisher MDPI AG
File Format PDF
Date Created 2017-01-25
Copyright Year ©2017
Language English
Subject Domain (in LCC) TD1-1066
Subject Keyword Environmental technology ♦ Plethodon cinereus ♦ Sanitary engineering ♦ Soil ♦ Adelges tsugae ♦ Technology ♦ Hemlock forest ♦ Invasive species
Abstract Hemlock forests of the northeastern United States are declining due to the invasive hemlock woolly adelgid (HWA) (Adelges tsugae). Hardwood species replace these forests, which affects soil properties that may influence other communities, such as red-backed salamanders (red-backs) (Plethodon cinereus). This study examined the effects of HWA invasion on soil properties and how this affects red-backs at the Hemlock Removal Experiment at Harvard Forest, which consists of eight 0.8 ha plots treated with girdling to simulate HWA invasion, logging to simulate common management practices, or hemlock- or hardwood-dominated controls. Coverboard surveys were used to determine the relative abundance of red-backs between plots during June and July 2014 and soil cores were collected from which the bulk density, moisture, pH, temperature, leaf litter, and carbon-nitrogen ratio were measured. Ordination provided a soil quality index based on temperature, pH, and carbon-to-nitrogen ratio, which was significantly different between plot treatments (p < 0.05) and showed a significant negative correlation with the red-back relative abundance (p < 0.05). The findings support the hypothesis that red-backs are affected by soil quality, which is affected by plot treatment and thus HWA invasion. Further studies should explore how salamanders react in the long term towards changing environments and consider the use of red-backs as indicator species.
ISSN 20763298
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2017-01-01
e-ISSN 20763298
Journal Environments
Volume Number 4
Issue Number 1
Starting Page 8

Source: Directory of Open Access Journals (DOAJ)