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Lecture 19

BIOB50Winter2012 Lecture 19.docx - includes pictures and specified readings from text!!

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Biological Sciences
Marc Cadotte

BIOB50Winter2012 Lecture 19 Landscape Ecology and Ecosystem Management Chapter 23 o When we look at ecosystems we do not realize that our viewpoint encompasses a small part of a larger landscapewe have to go farther up in scale to be able to see the landscape as a whole ie satellite imaging Landscape Ecology o Landscape ecology examines spatial patterns and their relationship to ecological processes and changeso Landscape ecology a subdiscipline of ecology that emphasizes the causes and consequences of spatial variation across a range of scaleso Landscape ecologists look at the spatial arrangement of different landscape elements across the earths surface and how those patterns affect and are affected by ecological processeso The elements are biotic and abiotic o Biotic elements are living elements such as plants and animals o Abiotic elements are non living things such as soil climate water topography etc o Landscapean area in which at least one element is spatially heterogeneouso Heterogeneous displaying a varied composition or a mixture of elementsin ecology means there are many differences across spacetimeo Homogeneous consists of elements which are similar or identicalfew to no differences across space andor timeo A mosaic is composite pattern of heterogeneous elementso Figure 234 Landscape HeterogeneityPart 1 Northern Michigan o 1ooIntroductiono Remote sensing satellites now provide images of Earth that have vastly expanded the interpretation of largescale ecological patternso Geographic Information Systems GISare computer based systems that allow the storage analysis and display of data pertaining to specific geographic areashave become standard for use in landscape planning for conservation and urban developmento In the fiels global positioning systems GPS permit ecologists to document precise locations and integrate them with other variables through GIS2
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