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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