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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

evaluation of changes in tree crown characteristics to assess forest health in two Indiana state parks  [2004]

Randolph, K.C.; Moser, J.W. Jr.;

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An evaluation of tree crown characteristics was conducted by means of a Forest Health Monitoring study in Turkey Run and Shades State Parks, Indiana. Crown dieback, foliage transparency, and crown density were summarized for three consecutive measurement years, and the short-term changes in these characteristics were quantified in an effort to identify potential forest health concerns. In both Shades and Turkey Run State Parks, no significant changes were detected in the levels of crown dieback and crown density. Only for Shades hardwoods, and more specifically hickory trees (Carya spp.), was there an unfavorable change in foliage transparency; however, this change did not appear extraordinary given the Forest Health Monitoring measurement quality objectives. This study demonstrated that given the current body of knowledge about the acceptable levels for the crown characteristics, the majority of trees in Shades and Turkey Run State Parks are not exhibiting responses to extreme stress and should be considered healthy.
From the journal
Northern journal of applied forestry
ISSN : 0742-6348

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
21
Issue:
1
Start Page:
50
End Page:
55
All titles:
"evaluation of changes in tree crown characteristics to assess forest health in two Indiana state parks"@eng
Other:
"Includes references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
21
Issue:
1
Start Page:
50
End Page:
55
All titles:
"evaluation of changes in tree crown characteristics to assess forest health in two Indiana state parks"@eng
Other:
"Includes references"