scholarly journals Symposium on Ecological Classification of Forest Land

1977 ◽  
Vol 53 (3) ◽  
pp. 171-171
Keyword(s):  
Ecological Classification ◽  
Forest Land

A Priori Typology-Based Prediction of Benthic Macroinvertebrate Fauna for Ecological Classification of Rivers

2008 ◽  
Vol 42 (5) ◽  
pp. 894-906 ◽  
Author(s):  
Jukka Aroviita ◽  
Esa Koskenniemi ◽  
Juho Kotanen ◽  
Heikki Hämäläinen
Keyword(s):  
A Priori ◽  
Benthic Macroinvertebrate ◽  
Ecological Classification ◽  
Macroinvertebrate Fauna

Canada's National Ecological Framework: An asset to reporting on the health of Canadian forests

2001 ◽  
Vol 77 (1) ◽  
pp. 111-115 ◽  
Author(s):  
Harry Hirvonen
Keyword(s):  
Forest Health ◽  
Forest Service ◽  
Ecological Framework ◽  
Single Element ◽  
Ecological Classification ◽  
International Reporting ◽  
Ecological Land Classification ◽  
Reporting Framework ◽  
Ecosystem Classification

The Canadian Forest Service, in cooperation with its partners, has a mandate to report on the health of Canada's forests and determine if, how, and why it is changing. A holistic perspective of forest health is taken whereby the ecosystem rather than a single element is considered. The use of the national ecological classification of Canada as a key reporting framework facilitates this task. Advantages for reporting purposes are several, including the use of ecological over jurisdictional boundaries to discuss ecosystems, wide national acceptance of the framework, and access to a wide array of other environmental databases that use the same framework. Compromises have to be made for forest health reporting as the ecological classification is not a forest ecosystem classification. However, advantages to using the framework for national reporting far outweigh these shortcomings. Key words: ecological land classification, forest health, national and international reporting

A Note on Synchronized Emergence in Gomphus vastus Walsh (Odonata: Gomphidae)

1963 ◽  
Vol 95 (1) ◽  
pp. 69-69 ◽  
Author(s):  
Clifford Johnson
Keyword(s):  
North American ◽  
Adult Emergence ◽  
North American Species ◽  
Ecological Classification ◽  
General Area ◽  
River Bank ◽  
Dragonfly Species

An ecological classification of dragonfly species into spring and summer types was proposed by Corbet (1954). Much of the basis for the classification rests with the pattern and period of adult emergence. Since little information of this type is known for North American species, the following observations are reported.On May 20, 1962, I spent several hours collecting Baisaeschna janata and Didymops transversa along the New River, two miles north of McCoy, Virginia. A search was made at that time for odonate exuviae. None were found. I returned to the site at 9:30 a.m. the following day. The vegetation, tree trunks, rocks and detritus along the river were clustered with exuviae, all apparently of Gomphus vastus. Several thousand individuals must have emerged from that general area of the river. As an example of the density, 230 cast skins were counted along one 20-foot stretch of the river bank. Some individuals had transformed directly on the sand banks and others at a height of seven feet.

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