Modelling Stream Chemistry for the Turkey Lakes Watershed: Comparison with 1981–84 Data

Lam, D. C. L.; Bobba, A. G.; Jeffries, D. S.; Craig, D.L.

doi:10.1139/f88-269

Cited by 12 publications

(1 citation statement)

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“…Effects research conducted over the past 24 years at the TLW has developed and applied models simulating acidification effects on aquatic chemistry and biology (Lam et al 1988); assessed the role of nitrogen-based pollutants in water and soil acidification , and examined the process, reversibility, and extent of chemical and biological recovery in streams and lakes (Jeffries et al 2002). Moderate sensitivity to acid deposition was detected for forests and surface waters situated predominantly on metamorphic silicate bedrock (greenstone) overlain by thin glacial tills .…”

Section: Policy Contributionsmentioning

confidence: 99%

The role of forests in regulating water: The Turkey Lakes Watershed case study

Foster¹,

Beall²,

Kreutzweiser³

2005

The Forestry Chronicle

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Long-term experimental catchment studies, applied to relatively undisturbed ecosystems, provide reliable hydrologic data that are highly relevant to forest management decisions on water supply and quality. A number of large-scale, longterm catchment studies have been conducted in North America to examine these linkages and processes in support of watershed management decisions. Among these the Turkey Lakes Watershed (TLW), a rare example of a long-term fully integrated examination of the biology and chemistry of the atmosphere, forests, soils, streams, and lakes, is presented as a case study. Multi-agency, interdisciplinary research at the TLW, which has strong links nationally and internationally, has included hydrological studies, examination of landscape influences on nutrient export to surface waters, and impacts of catchment disturbance on water yield, nutrient flux, carbon cycling, and sedimentation in streams. Application of partial cut harvest systems in the TLW tolerant hardwood forest resulted in reduced runoff and improved water quality (sediment, nitrate and calcium concentrations) relative to clearcut harvest. Twenty years after the initiation of reductions in atmospheric S emissions losses of SO 4 2-from some headwater basins remain high and there is little evidence of acidification recovery in TLW surface waters. The TLW research approach can be used globally to scientifically assess how natural and human actions affect the important services provided by forested watersheds. For example, TLW results have contributed to international policy on acid rain reductions and air quality agreements.

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Section: Policy Contributionsmentioning

confidence: 99%