Postglacial Rise and Decline of Ostrya virginiana (Mill.) K. Koch and Carpinus caroliniana Walt. In Eastern North America: Predictable Responses of Forest Species to Cyclic Changes in Seasonality of Climates

1994 ◽  
Vol 21 (2) ◽  
pp. 137 ◽  
Author(s):  
Hazel R. Delcourt ◽  
Paul A. Delcourt
Keyword(s):  
North America ◽  
Eastern North America ◽  
Forest Species ◽  
Ostrya Virginiana ◽  
Carpinus Caroliniana ◽  
Cyclic Changes

scholarly journals Comparison of a Population of Eastern Red-backed Salamanders, Plethodon cinereus, under Native Dominant Wood Coverboards and Natural Cover Objects

2009 ◽  
Vol 123 (3) ◽  
pp. 210 ◽  
Author(s):  
Jean-David Moore
Keyword(s):  
North America ◽  
Age Structure ◽  
Sugar Maple ◽  
Good Method ◽  
Plethodon Cinereus ◽  
Eastern North America ◽  
Native Forest ◽  
Forest Species ◽  
Population Demographics ◽  
Significant Difference

Artificial cover objects or coverboards have been widely used to study Eastern Red-backed Salamanders (Plethodon cinereus), a species that is very abundant in eastern North America and known to be one of the most common vertebrates within its geographical range. However, recent studies have suggested that potential bias may be associated with the use of coverboards compared with natural cover objects. In this study, age structure and body size (weight and snout-vent length, SVL) of P. cinereus found under coverboards and natural cover objects at Lake Clair (Quebec, Canada) were compared. Coverboards were made of Sugar Maple (Acer sacchrum), a native forest species dominant in the study area. In 2004 and 2005, a total of 162 P. cinereus were found under coverboards, and 156 P. cinereus were found under natural cover objects. No significant difference in the age structure, mean weight, or SVL of P. cinereus was observed between the two sets. This study suggests that the type of coverboard used at Lake Clair is a good method to obtain an accurate index of P. cinereus population demographics, and is similar to that expected under natural cover objects. This technique should help to establish a standard protocol that could better allow direct comparisons among studies in the future. However, more studies are needed to explain the high proportion of adult specimens found under both cover types at Lake Clair relative to studies in other regions in North America.

Late-Wisconsin Vegetational Changes in Unglaciated Eastern North America

1973 ◽  
Vol 3 (4) ◽  
pp. 621-631 ◽  
Author(s):  
Donald R. Whitehead
Keyword(s):  
North America ◽  
Boreal Forest ◽  
Boreal Forests ◽  
Deciduous Forest ◽  
Good Evidence ◽  
Eastern North America ◽  
Forest Species ◽  
Time Data ◽  
Broad Area ◽  
Glacial Time

AbstractRecent pollen and macrofossil data from the Southeast is consistent with a displacement of boreal forest species by over 1000 km during full-glacial time. Data from west of the Appalachians suggests a displacement of some 600 km. Thus boreal forests were developed in a broad area south of the ice margin. Few deciduous forest elements persisted in that region. The displacement appears to have been azonal. There is good evidence to suggest a significant mid-Wisconsin interstadial (23,000-36,000 BP) characterized by a more temperate biota.

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.

HAVE WE SEEN THE LARGEST EARTHQUAKES IN EASTERN NORTH AMERICA?

2018 ◽  
Author(s):  
James S. Neely ◽  
◽  
Seth Stein ◽  
Miguel Merino ◽  
John Adams
Keyword(s):  
North America ◽  
Eastern North America
Sign in / Sign up

Export Citation Format

Share Document