Landscape change over 60 years surrounding Cedarburg BogJason J. Schroeder, Jason Mills, Erica Young, James ReinartzDept o...
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Wisconsin Wetlands Conference poster Cedarburg Bog land use historical classification

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Poster that was presented at the Wisconsin Wetlands Conference.

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Wisconsin Wetlands Conference poster Cedarburg Bog land use historical classification

  1. 1. Landscape change over 60 years surrounding Cedarburg BogJason J. Schroeder, Jason Mills, Erica Young, James ReinartzDept of Biological Sciences and Field Station, University of Wisconsin-Milwaukee<br />1941<br />BACKGROUND<br />Cedarburg Bog is a large, forested wetland in SE Wisconsin. Formally protected since 1952, this unique wetland remains relatively undisturbed. Land cover changes on this primarily agricultural landscape could influence the wetland by altering groundwater flow and the corridors that provide native and exotic species access to the wetland. As part of a long-term study of ecological changes in Cedarburg Bog, we analyzed historical and contemporary land cover from aerial photographs to quantify landscape changes between 1941 and 2000 within the 10,000 ha area surrounding the wetland.<br />2000<br />Cover classes<br />Agriculture<br />Forest<br />Water<br />Emergent wetland<br />Shrub wetland<br />Forested wetland<br />Areas of reforestation between 1941 & 2000 = increase in forest cover<br />Larger forest patches, closer to one another<br />Larger number of smaller agricultural patches due to increasing forest cover<br />Land cover maps focal area <br />(~2,500 ha)<br />RESULTS – Changes on<br />landscape surrounding <br />Cedarburg Bog<br />Aerial views of Cedarburg Bog and surrounding landscape<br />Saukville,<br />Wisconsin<br />Land cover classification (10,000 ha)<br />Aerial photographs<br />METHODS<br />CONCLUSIONS<br />Landscape changes :<br /><ul><li> Forested area increased dramatically between 1941 and 2000
  2. 2. Larger forest patches are closer together and more continuous in 2000 than in 1941
  3. 3. Decreased agricultural activity on this landscape since 1941 may now be helping to </li></ul> maintain wetland integrity<br />Implications :<br /><ul><li> Mobility of native wetland species is likely to increase due to increased wetland forest cover
  4. 4. Mobility of exotic species is also likely to increase
  5. 5. Increased urban development is likely to further decrease agricultural activity around this </li></ul> important forested wetland<br />Cedarburg <br />Bog<br />2000<br />1941<br />2000<br />1941<br />

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