, Volume 19, Issue 4, pp 697-709

First online:

Mercury bioaccumulation and trophic transfer in the terrestrial food web of a montane forest

  • Christopher C. RimmerAffiliated withVermont Center for Ecostudies Email author 
  • , Eric K. MillerAffiliated withEcosystems Research Group, Ltd.
  • , Kent P. McFarlandAffiliated withVermont Center for Ecostudies
  • , Robert J. TaylorAffiliated withTrace Element Research Laboratory, Department of Veterinary Integrative Biosciences, Texas A&M University
  • , Steven D. FaccioAffiliated withVermont Center for Ecostudies

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


We investigated mercury (Hg) concentrations in a terrestrial food web in high elevation forests in Vermont. Hg concentrations increased from autotrophic organisms to herbivores < detritivores < omnivores < carnivores. Within the carnivores studied, raptors had higher blood Hg concentrations than their songbird prey. The Hg concentration in the blood of the focal study species, Bicknell’s thrush (Catharus bicknelli), varied over the course of the summer in response to a diet shift related to changing availability of arthropod prey. The Bicknell’s thrush food web is more detrital-based (with higher Hg concentrations) in early summer and more foliage-based (with lower Hg concentrations) during late summer. There were significant year effects in different ecosystem compartments indicating a possible connection between atmospheric Hg deposition, detrital-layer Hg concentrations, arthropod Hg concentrations, and passerine blood Hg concentrations.


Mercury bioaccumulation Food web Catharus bicknelli Montane forests