Ecological Archives E089-076-A1

James B. Heffernan. 2008. Wetlands as an alternative stable state in desert streams. Ecology 89:1261–1271.

Appendix A. Three figures with pictures of gravel bed and ciénega study sites (all photos taken by the author).

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   FIG. A1. Examples of gravel-bed sites immediately following floods (top) and after algal regrowth (bottom).

 

 

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   FIG. A2. Examples of well-established ciénegas in Sycamore Creek, Arizona. (Top left) A ciénega dominated by Paspalum distichum, which entirely covers the surface stream. (Top right) A ciénega supporting a more diverse assemblage of wetland plants, including Equisetum laevigatum and Schoenoplectus americanus. (Bottom left) Regrowth of aboveground structures from P. distichum root mats following the large floods of January–March 2005. (Bottom right) Ciénega vegetation laid flat by a summer monsoon flood.


 

 

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   FIG. A3. Senescence of ciénega vegetation in response to colder winter temperatures (left) and summer drying (right).


 

 

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   FIG. A4. Colonization of the channel by herbaceous vegetation.


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