Sources of stream sulfate at the Hubbard Brook Experimental Forest: Long-term analyses using stable isotopes

1999 ◽  
Vol 44 (3) ◽  
pp. 281-299 ◽  
Author(s):  
C. Alewell ◽  
M. J. Mitchell ◽  
G. E. Likens ◽  
H. R. Krouse
Keyword(s):  
Stable Isotopes ◽  
Hubbard Brook Experimental Forest ◽  
Hubbard Brook

scholarly journals Long-term trends from ecosystem research at the Hubbard Brook Experimental Forest

2007 ◽  
Author(s):  
John L. Campbell ◽  
Charles T. Driscoll ◽  
Christopher Eagar ◽  
Gene E. Likens ◽  
Thomas G. Siccama ◽  
...  
Keyword(s):  
Hubbard Brook Experimental Forest ◽  
Ecosystem Research ◽  
Hubbard Brook ◽  
Long Term Trends

Comment on “Long-term decline of sugar maple following forest harvest, Hubbard Brook Experimental Forest, New Hampshire”

2019 ◽  
Vol 49 (7) ◽  
pp. 861-862
Author(s):  
Scott W. Bailey ◽  
Robert P. Long ◽  
Stephen B. Horsley
Keyword(s):  
New England ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Management Practices ◽  
Hubbard Brook Experimental Forest ◽  
Data Set ◽  
Hubbard Brook ◽  
Whole Tree

Cleavitt et al. (2018, Can. J. For. Res. 48(1): 23–31, doi: 10.1139/cjfr-2017-0233 ) report a lack of sugar maple (Acer saccharum Marsh.) regeneration in Hubbard Brook Experimental Forest (HBEF), Watershed 5 (W5), following whole-tree clearcut harvesting and purport that harvesting-induced soil calcium depletion contributed to regeneration failure of this species. In New England, clearcutting is a silvicultural strategy used to promote less tolerant species, especially birch (Betula spp.; Marquis (1969), Birch Symposium Proceedings, USDA Forest Service; Leak et al. (2014), doi: 10.2737/NRS-GTR-132 ), which is just the outcome that the authors report. While this study reports an impressive, long-term data set, given broad interest in sugar maple and sustainability of forest management practices, we feel that it is critical to more fully explore the role of nutrition on sugar maple dynamics, both prior to and during the experiment, and to more fully review the scientific record on the role of whole-tree clearcutting in nutrient-induced sugar maple dynamics.

Reply to the comment by Bailey et al. on “Long-term decline of sugar maple following forest harvest, Hubbard Brook Experimental Forest, New Hampshire”

2019 ◽  
Vol 49 (7) ◽  
pp. 863-864
Author(s):  
John J. Battles ◽  
Natalie L. Cleavitt ◽  
Chris E. Johnson ◽  
Timothy J. Fahey
Keyword(s):  
Sugar Maple ◽  
Eastern North America ◽  
National Forest ◽  
Hubbard Brook Experimental Forest ◽  
Hubbard Brook ◽  
Soil Nutrition ◽  
Successful Recruitment ◽  
White Mountain National Forest ◽  
Forest Practice

Sugar maple decline in eastern North America is caused by a complex combination of factors, with soil nutrition being one of several important determinants. Given the complexity of sugar maple population dynamics and the geographic extent of the species, we support Bailey et al.’s (2019, Can. J. For. Res. 49(7), doi: 10.1139/cjfr-2018-0207 ) argument to interpret results from Cleavitt et al. (2018, Can. J. For. Res. 48(1): 23–31, doi: 10.1139/cjfr-2017-0233 ) with due caution. The experiment at Hubbard Brook Experimental Forest represents an atypical application of contemporary forest practice in the White Mountain National Forest; however, some comments in Bailey et al. (2019) missed the point; others inaccurately characterized our paper. Cleavitt et al.’s (2018) 30-year record of vegetation recovery following whole-tree harvest documented a worrisome inability of a sugar maple population that successfully established after harvest to maintain its position in the understory. This lack of persistence on base-poor soils such as those in the mid and upper elevations of Hubbard Brook Experimental Forest suggests that the successful recruitment of sugar maple is not guaranteed.

Long-term calcium addition increases growth release, wound closure, and health of sugar maple (Acer saccharum) trees at the Hubbard Brook Experimental Forest

2007 ◽  
Vol 37 (9) ◽  
pp. 1692-1700 ◽  
Author(s):  
Brett A. Huggett ◽  
Paul G. Schaberg ◽  
Gary J. Hawley ◽  
Christopher Eagar
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Wound Closure ◽  
Hubbard Brook Experimental Forest ◽  
Hubbard Brook ◽  
Ca Addition ◽  
Significant Difference ◽  
Al Addition ◽  
And Control

We surveyed and wounded forest-grown sugar maple ( Acer saccharum Marsh.) trees in a long-term, replicated Ca manipulation study at the Hubbard Brook Experimental Forest in New Hampshire, USA. Plots received applications of Ca (to boost Ca availability above depleted ambient levels) or Al (to compete with Ca uptake and further reduce Ca availability). We found significantly greater total foliar and membrane-associated Ca in foliage of trees in plots fertilized with Ca when compared with trees from Al-addition and control plots (P = 0.005). Coinciding with foliar Ca differences, trees exhibited a significant difference in crown vigor and in percent branch dieback among treatments (P < 0.05), with a trend towards improved canopy health as Ca levels increased. Annual basal area increment growth for the years following treatment initiation (1998–2004) was significantly greater in trees subjected to Ca addition compared with trees in control and Al treatments. Treatment-related improvements in growth were particularly evident after overstory release following a 1998 ice storm. The amount of wound closure was also greatest for trees in Ca-addition plots relative to Al-addition and control plots (P = 0.041). These findings support evidence that ambient Ca depletion is an important limiting factor regarding sugar maple health and highlight the influence of Ca on wound closure and growth following release from competition.

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