Microevolution of the photosynthetic temperature optimum in relation to the elevational complex gradient

1972 ◽  
Vol 50 (6) ◽  
pp. 1231-1235 ◽  
Author(s):  
John H. Fryer ◽  
F. Thomas Ledig
Keyword(s):  
Natural Selection ◽  
New Hampshire ◽  
Elevational Gradient ◽  
Seed Source ◽  
Balsam Fir ◽  
Lapse Rate ◽  
Temperature Optimum ◽  
White Mountains ◽  
Complex Gradient

Balsam fir seedlings were grown under uniform conditions from seed collected along an elevational gradient in the White Mountains of New Hampshire. Photosynthetic temperature optimum of the seedlings decreased with increasing elevation of the seed source. The change in temperature optimum with elevation was similar to the adiabatic lapse rate, suggesting a precise adaptation to temperature through natural selection.

Vegetational Patterns and Processes in the Balsam Fir Zone, White Mountains New Hampshire

Ecology ◽  
1979 ◽  
Vol 60 (2) ◽  
pp. 403-417 ◽  
Author(s):  
William A. Reiners ◽  
Gerald E. Lang
Keyword(s):  
New Hampshire ◽  
Balsam Fir ◽  
White Mountains ◽  
Patterns And Processes

Root movement and root damage of red spruce and balsam fir on subalpine sites in the White Mountains, New Hampshire

1988 ◽  
Vol 18 (8) ◽  
pp. 991-1001 ◽  
Author(s):  
D. M. Rizzo ◽  
T. C. Harrington
Keyword(s):  
Growth Rate ◽  
New Hampshire ◽  
Red Spruce ◽  
Balsam Fir ◽  
Root Damage ◽  
Cross Sectional ◽  
White Mountains ◽  
Wind Exposure ◽  
Crown Dieback ◽  
Root Movement

Crown dieback and mortality of red spruce and balsam fir in the subalpine zone of the northern Appalachian Mountains have been attributed to wind-induced crown and root damage. Vertical root movements, damage to roots and crowns, and growth rate were measured on wind-exposed spruce and fir trees near canopy gaps at Kancamagus Pass (875 m elevation) and Wildcat Mountain (1160 m) in the White Mountain National Forest, New Hampshire. Root movements were significantly correlated with windspeed, crown exposure, and depth of soil to rock. Woody roots that had made movements in excess of 10 mm had fewer small (1–3 mm diameter) roots, more abrasion wounds, and a greater amount of nonconducting (dry or discolored) xylem than roots that had made smaller movements. Hydraulic conductivity was significantly reduced in roots with greater than 40% xylem cross-sectional area that was nonconducting. Spruce and fir trees at gap margins grew slower and had more root and crown damage than trees sheltered within the canopy. Decreases in growth rate of spruce and fir trees at both sites during the past 20 years were significantly correlated with wind exposure and some of the root and crown damage variables.

NEW ZIRCON U-PB GEOCHRONOLOGICAL DATA FROM THE MOAT VOLCANICS, WHITE MOUNTAINS, NEW HAMPSHIRE – IMPLICATIONS FOR RIFT AND/OR PLUME RELATED MAGMATISM

2019 ◽  
Author(s):  
Caleb Forrest Town ◽  
◽  
Justin V. Strauss ◽  
Sean T. Kinney ◽  
Scott A. Maclennan ◽  
...  
Keyword(s):  
New Hampshire ◽  
Geochronological Data ◽  
White Mountains

scholarly journals Consistent slow exhumation in a late Cenozoic glaciated landscape: The Presidential and Carter ranges of the White Mountains in New Hampshire, USA

Geomorphology ◽  
2019 ◽  
Vol 345 ◽  
pp. 106842 ◽  
Author(s):  
Michelle L. Fame ◽  
James A. Spotila ◽  
Lewis A. Owen ◽  
David L. Shuster
Keyword(s):  
New Hampshire ◽  
Late Cenozoic ◽  
White Mountains

scholarly journals Records of Recovering American Marten, Martes americana, in New Hampshire

2009 ◽  
Vol 123 (1) ◽  
pp. 1 ◽  
Author(s):  
Jillian R. Kelly ◽  
Todd K. Fuller ◽  
John J. Kanter
Keyword(s):  
Geographic Information Systems ◽  
Sex Ratio ◽  
New Hampshire ◽  
Relative Abundance ◽  
Current Distribution ◽  
Martes Americana ◽  
American Marten ◽  
White Mountains ◽  
Live Trapping ◽  
Occurrence Records

Recent and current distribution of state-threatened American Marten (Martes americana) in New Hampshire was identified by summarizing 157 occurrence records (1980–2004) in a database and mapped using Geographic Information Systems (GIS). Records included visual observations, snow tracks, road kill, trapper captures, systematic live-trapping locations, and other miscellaneous locations. Marten in New Hampshire are now found throughout the White Mountains north to the Canadian border, with the highest relative abundance in the very northern tip of New Hampshire. The recent expansion in the range of Martens includes reproducing females, but a sex ratio biased towards males in some areas suggests that dispersing individuals might inhabit much of the range.

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