An intensive 1-month investigation of trace metal deposition and throughfall at a mountain spruce forest

Petty, William H.; Lindbeŕg, Steven E.

doi:10.1007/bf00170738

Cited by 26 publications

(11 citation statements)

References 15 publications

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“…3). These elevational trends confirm visual observations made during the IFSwhen clouds were present during the growing season, the cloud base generally remained above the 1740-m site (Petty & Lindberg 1990). …”

Section: Elevation Trends In Measured Fluxessupporting

confidence: 84%

Throughfall studies of deposition to forest edges and gaps in montane ecosystems

Lindbeŕg

Owens

1993

Biogeochemistry

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Abstract. An extensive network of bottle/funnel collectors was used to measure hydrologic, SO;-, and NO; fluxes in rain events and in throughfall beneath the canopies of several high elevation forest stands in the Great Smoky Mountains National Park during [1989][1990]. The throughfall fluxes were used as deposition surrogates to quantify trends in atmospheric inputs to sapling trees growing in forest gaps and to the mature forest canopy at the edge surrounding each gap. The paired gap/edge stands were located above (1940 m) and below (1720 m) the base of the clouds typically impacting this mountain. Total hydrologic and ion fluxes beneath the edge trees during the forest growing season exceeded fluxes beneath the adjacent gap saplings by nearly a factor of three (e.g. 230 vs 88 meq m-z for SO:-) at both elevations. Water and SO:-fluxes were up to two times greater beneath the forest edge at the cloud-prone 1940 m site than at 1720 m (e.g. 230 vs 110 meq m-* for SO:-). However, throughfall NO; fluxes were about 30% higher at 1720 m (17 vs 13 meq me*), because this lower site receives greater dry deposition of HNO, due to its ridgetop location and greater wind penetration. Estimates of SOi-deposition from cloud impaction were consistent with the net throughfall flux of SO:-(throughfall flux minus rain flux) at the 1940 m forest edge, but greatly exceeded the net throughfall flux at 1940 m gap, suggesting differences in ion concentrations in cloud droplets impacting on mature edge trees and young saplings in forest gaps.

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Section: Elevation Trends In Measured Fluxessupporting

confidence: 84%

Throughfall studies of deposition to forest edges and gaps in montane ecosystems

Lindbeŕg

Owens

1993

Biogeochemistry

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“…These results agree with published data on small uptake of Zn by tree crowns and leaching of Pb (PETTY and LINDBERG, 1990). Results of heavy metals determination should be treated with caution.…”

Section: Precipitation Chemistry Seasonal Variationssupporting

confidence: 92%

Precipitation chemistry in a forested study area of the Chojnów Forest District in the years 2004-2007

Kowalska¹,

Janek²

2009

Journal of Water and Land Development

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“…Concentrations of metals, DOC and SO 4 2-are greater in throughfall than in bulk deposition due to enhanced capture of dry deposition, foliar leaching and evaporation of precipitation from the canopy (Neary and Gizyn 1994), although the canopy can also adsorb deposited metals (Petty and Lindberg 1990). Throughfall concentrations of metals are mostly related to SO 4 due to concurrent dry deposition of metals and SO 4 2-to the canopy surface.…”

Section: Throughfallmentioning

confidence: 99%

The effects of dissolved organic carbon, acidity and seasonality on metal geochemistry within a forested catchment on the Precambrian Shield, central Ontario, Canada

2009

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Metal pollution, in combination with other environmental stressors such as acid deposition and climate change, may disturb metal biogeochemical cycles. To investigate the influence of dissolved organic carbon, acidity and seasonality on metal geochemistry, this study has described concentrations of 19 metals as they pass through an acidified forested catchment on the Precambrian Shield in south-central Ontario, Canada. Metal, dissolved organic carbon (DOC) and sulphate (SO 4 2-) concentrations fluctuate throughout the catchment compartments as the water passes through and interacts with vegetation, soils and bedrock. Relationships among metals, DOC and SO 4 2-are most pronounced in compartments where DOC and SO 4 2-exhibit high variability, namely in the throughfall, organic horizon soil water, and wetland-draining stream. Metal, DOC and SO 4 2-concentrations varied seasonally in the streams, and temporal coherence occurred among metal, DOC and SO 4 2-concentrations in the organic horizon soil water and the wetland-draining stream (PC1). In the wetland-draining stream, the highest DOC, Cr, Cu, Fe, Pb, and V concentrations occur in the summer, whereas concentrations of SO 4 2-and most other metals peak in the fall after a period of drought. Despite the rural location, provincial water quality objectives for surface water were exceeded for many metals when the peak fall values occurred.

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An intensive 1-month investigation of trace metal deposition and throughfall at a mountain spruce forest

Cited by 26 publications

References 15 publications

Throughfall studies of deposition to forest edges and gaps in montane ecosystems

Throughfall studies of deposition to forest edges and gaps in montane ecosystems

Precipitation chemistry in a forested study area of the Chojnów Forest District in the years 2004-2007

The effects of dissolved organic carbon, acidity and seasonality on metal geochemistry within a forested catchment on the Precambrian Shield, central Ontario, Canada

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