Landscape and vegetative influences on mercury in forest litter at Acadia National Park (thesis proposal)
Sheehan K. 2004. Landscape and vegetative influences on mercury in forest litter at Acadia National Park (thesis proposal). National Park Service
Following taken from abstract: 'Litterfall, or leaves and other matter that falls from the forest canopy to the forest floor, has been shown to be a predominant vector of mercury (Hg) deposition to forested watersheds. Leaves, the primary component of litterfall, accumulate atmospheric Hg by diffusive vapor exchange through stomata. Vegetative and non-vegetative factors dictate Hg accumulation in foliage. This research examines the influence that factors such as vegetation, aspect, elevation and canopy coverage have on the concentration of total-Hg in litterfall in two study watersheds in Acadia National Park (ANP), Maine, U.S.A. The annual flux of Hg in litterfall will be quantified to determine the relative magnitude compared to other input vectors of wet and dry deposited Hg. Litterfall Hg flux will be compared by landscape and vegetation factors to test the hypothesis that the quantity of litterfall untimately controls the flux of litterfall Hg.' /STUDY LOCATIONS:/ /MOUNT DESERT ISLAND/Cadillac Brook/Hadlock Brook/
- Type
- Published Report
- Authors
- Sheehan, K.
- Date of Issue
- 2004
- Publisher
- National Park Service
- Units
- ACAD
- Keywords
- Cadillac Brook, Hadlock Brook, Leaf Litter, Mercury (Hg), Mount Desert Island