Browsing US Forest Service by Title
Now showing items 1-6 of 6
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A Biological Survey of North Dakota
(1926)In the preliminary survey of the wild life of North America information has been gathered on the birds and mammals of the country at large, and provisional maps of the life zones of the continent and subdivisions of it ... -
Causes of Decadence in the Old Groves of North Dakota
(1935)In the Summer of 1931, the Lake States Forest Experiment Station undertook a study to determine the extent and cause of decadence of old groves. -
Hydric Soils of the United States: A Guide to the Recognition
(1996)This guide to Hydric Soils of the United States focuses on the concerns of the National Technical Committee for Hydric Soils (NTCHS). The committee is responsible for maintaining the Hydric Soil Definition, Hydric Soil ... -
The Long-Horned Wood-Boring Beetles of North Dakota (Coleoptera: Cerambycidae)
(1976)Presents biological resumes for 73 species of cerambycids found in North Dakota. Information consists of distribution and emergence records, larval food habits, parasites, predators and some comments on rearing techniques. -
Major Insect Pests in North Dakota Shelterbelts: Abundance and Distribution by Climate and Host Age
(1969)This study was was carried out from 1963 to 1965 to find out which insects were currently or potentially important to North Dakota shelterbelts, and to determine if their distribution and abundance were influenced by climate ... -
Relationships between Breeding Birds and Vegetation in Four Woodland Types of the Little Missouri National Grasslands
(1986)Bird species richness was greater in the cottonwood woodland type than in the juniper, pine, and ash woodland types. Total breeding bird densities were greatest in the green ash woodland type. The densities of 25 bird ...