The Currant Fruit Fly (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from The Currant Fruit Fly

North America is divisible into 7 transcontinental belts or life zones, each characterized by particular associations of ani mals and plants. These zones are: the Artic - Alpine, Hudsonian, Canadian, Transition, Upper Austral, Lower Austral and Tropi cal. The Transition zone is sub-divided into three faunal areas an eastern humid or Alleghanian, a western arid and' a Pacific coast humid division. The Upper Austral zone is divided into two faunal areas - an eastern humid or Carolinian and a western arid or Upper Sonoran area. The lower Austral and Tropical zones are likewise divisible, but since Epochm canadensis has not-been recorded from any locality belonging to these zones, the divisions need not be considered.

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