Next Article in Journal
Identification of Nine Pathotype-Specific Genes Conferring Resistance to Fusiform Rust in Loblolly Pine (Pinus taeda L.)
Next Article in Special Issue
Building on Two Decades of Ecosystem Management and Biodiversity Conservation under the Northwest Forest Plan, USA
Previous Article in Journal
Change of Soil Carbon Fractions and Water-Stable Aggregates in a Forest Ecosystem Succession in South China
Previous Article in Special Issue
Extinction Risk of Pseudotsuga Menziesii Populations in the Central Region of Mexico: An AHP Analysis
Article Menu

Export Article

Open AccessArticle
Forests 2015, 6(8), 2719-2738; doi:10.3390/f6082719

Benthic Collector and Grazer Communities Are Threatened by Hemlock Woolly Adelgid-Induced Eastern Hemlock Loss

Department of Entomology, University of Kentucky, S-225 Ag North, Lexington, KY 40546-0091, USA
Current address: Department of Biology, Transylvania University, 301 Brown Science Center, Lexington, KY 40508, USA;
*
Author to whom correspondence should be addressed.
Academic Editor: Diana F. Tomback
Received: 5 May 2015 / Revised: 13 July 2015 / Accepted: 20 July 2015 / Published: 6 August 2015
(This article belongs to the Special Issue Biodiversity and Conservation in Forests)
View Full-Text   |   Download PDF [864 KB, uploaded 6 August 2015]   |  

Abstract

Eastern hemlock (Tsuga canadensis (L.) is a foundation species in eastern North America where it is under threat from the highly invasive, exotic hemlock woolly adelgid (Adelges tsugae). Eastern hemlock is especially important in riparian areas of Central and Southern Appalachia, so we compared the spatial and temporal composition of benthic collector-gatherers, collector-filterers, and grazers in headwater streams with hemlock-dominated riparian vegetation to those with deciduous tree-dominated riparian vegetation to evaluate the extent to which adelgid-induced hemlock loss could influence composition and abundance of these two functional feeding groups. We found differences in benthic invertebrate abundance and family-level diversity based on riparian vegetation and sampling approach, and, often, riparian vegetation significantly interacted with location or season. Collector-gatherers and grazers were more abundant in eastern hemlock streams in the summer, when hemlock litter is readily available and deciduous litter is relatively sparse. Riparian eastern hemlock appears to exert considerable influence on benthic invertebrate functional feeding group composition in headwater stream communities, as expected with a foundation species. With the loss of eastern hemlock due to adelgid-induced mortality, we should expect to see alterations in spatial and temporal patterns of benthic invertebrate abundance and diversity, with potential consequences to both benthic and terrestrial ecosystem function. View Full-Text
Keywords: Adelges tsugae; Tsuga canadensis; riparian vegetation; headwater streams; benthic invertebrates; foundation species; invasive species Adelges tsugae; Tsuga canadensis; riparian vegetation; headwater streams; benthic invertebrates; foundation species; invasive species
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Adkins, J.K.; Rieske, L.K. Benthic Collector and Grazer Communities Are Threatened by Hemlock Woolly Adelgid-Induced Eastern Hemlock Loss. Forests 2015, 6, 2719-2738.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Forests EISSN 1999-4907 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top