Soil aluminum distribution in the near-stream zone at the Bear Brook watershed in Maine

Near-stream and upslope soil chemical properties were analyzed to infer linkages between soil and surface water chemistry atthe Bear Brook Watershed in Maine [BBWM]. Organic and mineral soil samples were collected along six 20 m transects perpendicular to the stream and one 200 m transect parallel t...

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Bibliographic Details
Published in:	Water, air, and soil pollution air, and soil pollution, 2002-02, Vol.134 (1-4), p.189-204
Main Authors:	PELLERIN, B. A, FERNANDEZ, I. J, NORTON, S. A, KAHL, J. S
Format:	Article
Language:	eng
Subjects:	Aluminum Applied sciences Bears Continental surface waters Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Exchange Freshwater Horizon Natural water pollution Pollution Pollution sources. Measurement results Pollution, environment geology Soil (material) Soil and sediments pollution Soil pollution Soils Streams USA, Maine Water treatment and pollution Watersheds
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Summary:	Near-stream and upslope soil chemical properties were analyzed to infer linkages between soil and surface water chemistry atthe Bear Brook Watershed in Maine [BBWM]. Organic and mineral soil samples were collected along six 20 m transects perpendicular to the stream and one 200 m transect parallel tothe stream. O horizon soils immediately adjacent to the streamhad a significantly higher pH (4.20) and lower soil organic matter percentage (54%) than upslope O horizons (3.84 and 76%,respectively). Additionally, near-stream O horizon soils hadsignificantly higher concentrations of water-soluble Al (2.7 ),exchangeable Al (2.3 ), and organically-bound Al (3.9 ) andsignificantly lower concentrations of exchangeable Ca (0.4 ) than O horizons upslope. These results suggest that Al can accumulate in non-hydric near-stream zone soils at this site. Mobilization of labile Al from near-stream zone soils duringhydrologic events could play a key role in explaining controls on Al in stream water at BBWM.
ISSN:	0049-6979 1573-2932