scholarly journals Annual Aboveground Biomass Growth in Temperate Forests of Eastern North America

2018 ◽  
Author(s):  
Alex W. Dye
Keyword(s):  
North America ◽  
Aboveground Biomass ◽  
Temperate Forests ◽  
Eastern North America ◽  
Biomass Growth

Post-Glacial Climate–Fire Interactions Control Tree Composition of Mesic Temperate Forests in Eastern North America

Ecosystems ◽  
2021 ◽  
Author(s):  
Serge Payette ◽  
Vanessa Pilon ◽  
Mathieu Frégeau ◽  
Pierre-Luc Couillard ◽  
Jason Laflamme
Keyword(s):  
North America ◽  
Temperate Forests ◽  
Eastern North America ◽  
Control Tree ◽  
Tree Composition ◽  
Glacial Climate

Interactive effects of water and CO2 on light response efficiency and gas exchange traits in pine (Pinus) and spruce (Picea) species

2020 ◽  
Vol 50 (11) ◽  
pp. 1194-1205
Author(s):  
John E. Major ◽  
Alex Mosseler
Keyword(s):  
North America ◽  
Growth Regulation ◽  
Light Response ◽  
Growth Stimulation ◽  
Interactive Effects ◽  
Eastern North America ◽  
Biomass Growth ◽  
Response Curves ◽  
Drought Treatment ◽  
Picea Species

Photosynthetic light response curves were parameterized for eight species in two genera, Pinus and Picea, grown in a 2 × 2 factorial of atmospheric CO2 and soil moisture treatments. Four of the pines and three of the spruces are native to eastern North America, and the fourth spruce, Norway spruce (Picea abies (L.) Karst.), is native to Europe. There was a significant genus × CO2 interaction in apparent quantum efficiency (AQE): spruce AQE was greater under ambient CO2 (CO2) than elevated CO2 (eCO2), but pine AQE were equal. Under drought treatment (DR), AQE declined for both genera. Assimilation at light saturation (Alsat) was greater for spruces than pines, and for both genera, Alsat decreased under eCO2 and DR. Water-use efficiency was greater for pines than spruces and greater for pines and unchanged for spruces under DR. Examining AQE and Alsat change (%) from aCO2 to eCO2, there was a significant positive relationship to biomass growth stimulation (%) across species. These relationships support the theory of sink (biomass growth) regulation of assimilation traits and also the importance of needle nitrogen. Our results in response to eCO2 and DR suggest a shift toward increased use of pines in forest management for eastern North America.

The Identification and Study of Indian Shell Middens in Eastern North America: 1643–1861

1986 ◽  
Vol 6 (3) ◽  
pp. 227-243 ◽  
Author(s):  
Andrew L. Christenson
Keyword(s):  
Nineteenth Century ◽  
Civil War ◽  
North America ◽  
East Coast ◽  
Eastern North America ◽  
Shell Midden ◽  
Shell Middens ◽  
Work Done

Although the interest in shell middens in North America is often traced to reports of the discoveries in Danish kjoekkenmoeddings in the mid-nineteenth century, extensive shell midden studies were already occurring on the East Coast by that time. This article reviews selected examples of this early work done by geologists and naturalists, which served as a foundation for shell midden studies by archaeologists after the Civil War.

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