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Note: The contents and pictures in this presentation are copyrighted. You have permission to use this presentation in your classroom but you may not publish or profit from it. How Big is Your Landscape? What is a landscape? To an ecologist, a LANDSCAPE is
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Note: The contents and pictures in this presentation are copyrighted. You have permission to use this presentation in your classroom but you may not publish or profit from it.
What is a landscape? • To an ecologist, a LANDSCAPE is • An area with an uneven distribution of at least one factor of interest • example • In other words…an area that is patchy • A PATCH is an area that differs from its surroundings • example • Other examples? • Let’s define “factor of interest” for us at this time. • We are interested in resources.
What are Resources? • Any component of the environment that can be used by an organism is called a RESOURCE • Examples? • Nutrients • Water • Energy • Shelter • Mates
Do all organisms see a landscape the same way? • Plants? • Bacteria? • Birds? • People? • Mice? • Others?
Scale • How landscapes are perceived is affected by scale • The spatial or temporal dimension of an object or process is called SCALE • It is characterized by both extent and grain • The size of an area or time span of interest is called EXTENT example • The precision of identifiable components is called GRAIN or RESOLUTION example • An object has both extent and grain example
Why is landscape and scale important? • Conservation/restoration • Pollution • Biology • Human resource use • Urbanization
Questions • How do you think it would affect an organism if a city expanded into its landscape?
streets A Landscape back
backyard grass pool trees concrete bush birdbath dirt/gravel Home Patches in a Landscape back
World Country State City Home 100s of feet miles hundreds of miles thousands of miles 10s of thousands of miles Space/area World Temperature Changes (Ice Age) Climate Season Temperature daily months 10s-100s of years thousands of years Time Extent back
4 feet An area of your backyard from the perspective of a mouse. An area of your backyard from your (human) perspective. Grain/Resolution 3 feet 3 feet back
Climate Seasons Heat wave Temperature Time Space Extent and Grain back