Cloud water deposition to Appalachian forests

1991 ◽  
Vol 25 (6) ◽  
pp. 1014-1021 ◽  
Author(s):  
Richard J. Vong ◽  
John T. Sigmon ◽  
Stephen F. Mueller
Keyword(s):  
Cloud Water ◽  
Appalachian Forests ◽  
Cloud Water Deposition

scholarly journals Canopy structure and cloud water deposition in subalpine coniferous forests

Tellus B ◽  
1986 ◽  
Vol 38 (5) ◽  
pp. 319-327 ◽  
Author(s):  
Gary M. Lovett ◽  
William A. Reiners
Keyword(s):  
Canopy Structure ◽  
Cloud Water ◽  
Coniferous Forests ◽  
Cloud Water Deposition

scholarly journals Estimates of Cloud Water Deposition at Mountain Acid Deposition Program Sites in the Appalachian Mountains

2003 ◽  
Vol 53 (3) ◽  
pp. 291-308 ◽  
Author(s):  
Ralph E. Baumgardner ◽  
Selma S. Isil ◽  
Thomas F. Lavery ◽  
Christopher M. Rogers ◽  
Volker A. Mohnen
Keyword(s):  
Acid Deposition ◽  
Appalachian Mountains ◽  
Cloud Water ◽  
Cloud Water Deposition

Red spruce soil solution chemistry and root distribution across a cloud water deposition gradient

1992 ◽  
Vol 22 (6) ◽  
pp. 893-904 ◽  
Author(s):  
J.D. Joslin ◽  
M.H. Wolfe
Keyword(s):  
Soil Solution ◽  
Fine Root ◽  
Base Cation ◽  
Cloud Water ◽  
Red Spruce ◽  
High Cloud ◽  
Ion Concentrations ◽  
Soil Solutions ◽  
Cloud Water Deposition ◽  
Deposition Gradient

The decline of red spruce (Picearubens Sarg.) at high elevations in eastern North America has been linked in time and space with exposure to acidic cloud water. To investigate the belowground effects of a cloud water deposition gradient between two mature red spruce stands on the summit of Whitetop Mountain, Virginia, the chemistries of precipitation, throughfall, and soil solution were monitored over a 2-year period, and fine-root distributions were characterized. Deposition of water, sulfate, nitrate, and ammonium in throughfall and stemflow was from 15 to 55% greater at the site with greater exposure to cloud water deposition (high cloud site), depending upon the particular ion and year. Soil solution nitrate concentrations were highly variable over time, and base cation, Al, and H ion concentrations were highly correlated with nitrate in both organic and mineral horizons at both sites. Soil solution nitrate, base cation, Al, and H ion concentrations were two to six times greater during periods of low soil moisture in the summer–autumn of 1987 and 1988 than during the remainder of the study period. In the mineral soil solutions, the high cloud site had significantly higher (p < 0.001) concentrations of nitrate and Al, and significantly lower (p < 0.05) Ca:Al and Mg:Al ratios. The high cloud stand also had shallower root systems, with fine-root biomass less than 40% of that of the low cloud stand (p < 0.05) at all depths greater than 18 cm. Soil solutions collected from below 15 cm at the high cloud site had a mean Ca:Al ratio less than 0.5 and Al concentrations that during dry periods, frequently approached or exceeded the literature values for the toxicity threshold for red spruce root growth. Restricted root development in the high cloud stand was apparently the result of this unfavorable chemical environment.

Estimating cloud water deposition to subalpine spruce-fir forests—II. Model testing

1991 ◽  
Vol 25 (5-6) ◽  
pp. 1105-1122 ◽  
Author(s):  
Stephen F. Mueller ◽  
John D. Joslin ◽  
Mark H. Wolfe
Keyword(s):  
Cloud Water ◽  
Model Testing ◽  
Cloud Water Deposition

scholarly journals Measurements of cloud water deposition on vegetation using a lysimeter and a flux gradient technique

Tellus B ◽  
1990 ◽  
Vol 42 (3) ◽  
pp. 285-293 ◽  
Author(s):  
D. Fowler ◽  
A. P. Morse ◽  
M. W. Gallagher ◽  
T. W. Choularton
Keyword(s):  
Cloud Water ◽  
Flux Gradient ◽  
Gradient Technique ◽  
Cloud Water Deposition
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