RAM 382 exam 1 2007

RAM 382 exam 1 2007 - RAM 382 Spring 2007 First Exam 100...

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RAM 382 Spring 2007 First Exam 100 points 15 February 2007 Name:____ ANSWERS _______________________________ 1. In its most simple form, a plant community is a group of species growing together. However, we also strive to categorize these groups of co-occurring species into types of communities based on four general characteristics. Two of those characteristics are composition and physiognomy. Name one of the two other characteristics. (4 points) Habitat or Response to management For composition : List one common species (either genus and species, or common name) for each community. (4 pts) Hot Desert Species: Desert Grassland Species: For physiognomy : Describe one major difference between the physiognomy of the Hot Desert and the Desert Grassland. (2 points) Desert Grassland has greater contribution of herbaceous species 2. The drawing below shows the spatial distribution of species 1, 2, 3, 4, 5, and 6. The Organismal Model of community organization assumes that the location and width of the ecotone between two communities is most strongly influenced by the interactions among species. First, draw the location of the ecotone between the communities in this figure. (4 points) Second, what factor other than species interactions may create this spatial arrangement of species into two groups? (2 points) A threshold change in the spatial distribution of resources, such as water or soils qualities 1 Distance Species Abundance 1 2 3 4 5 6 ECOTONE
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3. We use structural and functional attributes to describe and compare communities. Use the concepts of variation in space and variation in time to distinguish these attributes. Specifically, which type of attribute describes variations over space and which describes variations over time (circle the correct answers. (4 points). Structural attributes describes variation over time or variation over space. 2 Functional attributes describes variation over time or variation over space. 4.
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This test prep was uploaded on 04/03/2008 for the course RAM 382 taught by Professor Mcclaran during the Spring '07 term at Arizona.

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RAM 382 exam 1 2007 - RAM 382 Spring 2007 First Exam 100...

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