GEOG 3020 Lecture Notes - Lecture 1: Coastal Erosion, Ecosystem Services, Des Plaines River

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Global environmental change: changes in our environment that are the outcome of interdependent social and biophysical processes connected across geographic scales (e. g. biogeochemical cycles and climate systems; economic markets and political/governance networks) Processes implies something ongoing rather than something isolated. Scale (in this course) refers to a certain geographic proportionality. Concept of (cid:498)scales(cid:499) don(cid:495)t really exist (cid:523)no actual boundaries(cid:524) Even though a given event might seem to be (cid:498)local(cid:499) in its geographic geographies such as (cid:498)global(cid:499) processes. Site-specific process scale proportionality, it might be rooted in processes that operate at much larger: e. g. toxic wastewater being emitted from a sewage pipe, nested within a local scale. Local scale: e. g. the lake into which the pipe is being drained, situated in a regional context. Regional scale: e. g. the watershed that drains into and out of the lake, part of a global process. Global scale: e. g. the global water cycle and the global economic markets for which the plant is manufacturing products.

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