Intertidal Mudflats & Channels 



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1 23 456 78 9101112 



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012 345 6789101112 



Weekly Sample, Fall 1988 



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01 234 567 89101112 



Weekly Sample, Fall 1988 



Figure 3.31. Percent of all small waders seen 

 in intertidal flats and channels (top) and 

 dunes (bottom) during high and low tide 

 surveys. 



Figure 3.32. Percent of all large waders seen 

 in intertidal flats and channels (top) and 

 dunes (bottom) during high and low tide 

 surveys. 



Waterbirds at Tijuana Estuary interact 

 with each other and their environment in 

 ways that are dynamic and complex. The 

 ability of individuals to exploit a variety of 

 habitats that change daily, seasonally, and 

 annually makes the estuarine bird community 

 one of the most diverse in nature. At the same 

 time, the behaviors that allow waterbirds to 

 respond to change also make them 



particularly vulnerable to human activities 

 that disturb the network of habitats upon 

 which they depend. Globally, the loss of 

 wetlands eliminates links in a fragile chain of 

 migratory staging and stopover sites that tie 

 together breeding and wintering grounds, 

 threatening entire populations and even 

 species. Regionally, alteration of wetland 

 habitat restricts movement within and 



70 



