scholarly journals Effects of Acidic Deposition and Soil Acidification on Sugar Maple Trees in the Adirondack Mountains, New York

2013 ◽  
Vol 47 (22) ◽  
pp. 12687-12694 ◽  
Author(s):  
T. J. Sullivan ◽  
G. B. Lawrence ◽  
S. W. Bailey ◽  
T. C. McDonnell ◽  
C. M. Beier ◽  
...  
1992 ◽  
Vol 22 (4) ◽  
pp. 457-464 ◽  
Author(s):  
M.J. Mitchell ◽  
N.W. Foster ◽  
J.P. Shepard ◽  
I.K. Morrison

Biogeochemical cycling of S and N was quantified at two hardwood sites (Turkey Lakes watershed (TLW) and Huntington Forest (HF)) that have sugar maple (Acersaccharum Marsh.) as the major overstory component and are underlain by Spodosols (Podzols). TLW and HF are located in central Ontario (Canada) and the Adirondack Mountains of New York (U.S.A), respectively. Major differences between the TLW and HF sites included stand age (300 and 100 years for TLW and HF, respectively), age of dominant trees (150–300 and 100 years for TLW and HF, respectively), and the presence of American beech (Fagusgrandifolia Ehrh.) at HF as well as lower inputs of SO42− and NO3− (differences of 99 and 31 mol ion charge (molc)•ha−1•year−1, respectively) at TLW. There was an increase in concentration of SO42− and NO3− after passage through the canopy at both sites. A major difference in the anion chemistry of the soil solution between the sites was the much greater leaching of NO3− at TLW compared with HF (1300 versus 18 molc•ha−1•year−1, respectively). At HF, but not TLW, there was a marked increase in SO42− flux (217 molc•ha−1•year−1) when water leached from the forest floor through the mineral soil. The mineral soil was the largest pool (>80%) of N and S for both sites. The mineral soil of TLW had a C:N ratio of 16:1, which is much narrower than the 34:1 ratio at HF. This former ratio should favor accumulation of NH44+ and NO3− and subsequent NO3− leaching. Laboratory measurements suggest that the forest floor of TLW may have higher N mineralization rates than HF. Fluxes of N and S within the vegetation were generally similar at both sites, except that net requirement of N at TLW was substantially lower (difference of 9.4 kg N•ha−1•year−1). The higher NO3− leaching from TLW compared with HF may be attributed mostly to stand maturity coupled with tree mortality, but the absence of slow decomposing beech leaf litter and lower C:N ratio in the soil of the former site may also be contributing factors.


1995 ◽  
Vol 25 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Yimin Zhang ◽  
Myron J. Mitchell

Total P was monitored at Huntington Forest in the Adirondack Mountains of New York from June 1986 to May 1987. Total P in precipitation from an adjacent open site was compared with throughfall, stemflow, and soil solutions collected from a hardwood stand dominated by American beech (Fagusgrandifolia Ehrh.) and sugar maple (Acersaccharum Marsh.). Total P concentrations in bulk precipitation were very similar throughout the year (4.95 μmol•L−1 in rain versus 4.93 μmol•L−1 in snow). Total P concentration was lower in throughfall than in bulk precipitation, and P in growing season bulk throughfall (1.79 μmol•L−1) was greater than that in the dormant season (1.00 μmol•L−1). Total P concentrations in both throughfall and stemflow were higher under beech than maple. Phosphorus concentrations in soil solutions decreased as water passed through the soil profile. Phosphorus was tightly retained in this ecosystem except for a small loss via drainage water during spring snowmelt.


1981 ◽  
Vol 38 (12) ◽  
pp. 1701-1707 ◽  
Author(s):  
Dwight A. Webster ◽  
William A. Flick

Eleven year-classes of wild, domestic, and wild × domestic hybrid strains of brook trout (Salvelinus fontinalis) were stocked in a 0.19-ha Adirondack pond. Comparative survival and growth were assessed upon drainage in early fall. Rearing native wild strains to maturity in a hatchery, or domestic strains in a natural environment, did not consistently or materially affect survival of progeny, suggesting that superior performance of wild strains was largely inherent. Interstrain hybrids of wild × domestic showed survivals equivalent to the wild parents, but hybrids of two Canadian strains gave evidence of heterosis in both survival and net yield. Supplementary observations in other waters also indicated that one strain (Assinica) may be less adaptable to Adirondack conditions than the other (Temiscamie).Key words: brook trout, wild trout, domesticated trout, interstrain hybrid trout, survival, growth, heterosis, hybrid vigor


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