Lecture_13_PopDistribution_23Feb2011

Lecture_13_PopDistribution_23Feb2011 - 1...

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2 Start to bring your calculator to class.
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3 Chapter 9 – Chapter 9 – Population Distribution  Population Distribution  & Abundance
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4 Population = group of individuals of a single  species inhabiting a  defined area “defined area”  =  natural boundaries  (e.g. North or  South  rim of the Grand Canyon) or  human convenience
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5 I. Distribution = size, shape and location of the area occupied by a population
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6 I. Distribution = size, shape and location of the area occupied by a population Distribution is considered at:  A. Large scale  B. Small scale
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7 A.  Large scale distribution patterns Geographic range of occurrence Physical environment limits geographic distribution of a  species (some locations exceed the environmental  tolerance of a species).
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8 A.  Large scale distribution patterns http://www.azgfd.gov/w_c/edits/hdms_abstracts_mammals.shtml
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9 Mexican Free-tailed Bat
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10 Cave Myotis
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11 California Leaf-nosed Bat
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12 Silver Haired Bat
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13 A.  Large scale distribution patterns Example: Flying foxes – limited by cold, food and  water  availability Tropical mammals - Can’t live in strongly seasonal climate – 
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14 Grey-headed flying fox (Pteropus poliocephalus) Little Red Flying-Fox (P.scapulatus) Flying Foxes are large, tropical,  fruit and nectar-eating bats
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15 Little Red Flying-Fox (P.scapulatus) Description  - Fur varies from a reddish  brown to light brown. Head-body length  19-24cm. Habitat  -All forest types. . Distribution  - Widespread but not in  arid interior Status  - Lower risk
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Grey-headed Flying Fox (P.poliocephalus) Description  - Grey head and body with a  collar of orange fur around neck. Head-body  length 23-29cm. Habitat  -Eucalyptus forest, swamps and  rainforest. Distribution
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This note was uploaded on 04/12/2011 for the course BIO 326 taught by Professor Gehring,c during the Spring '08 term at N. Arizona.

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Lecture_13_PopDistribution_23Feb2011 - 1...

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