Spartina alterniflora and S. anglica are spreading rapidly through Pacific
NW estuaries, and have the potential to affect migratory shorebird
populations. Since these cordgrass species are native to the east coast, I
am currently researching what factors allow for the extensive growth of
Spartina on the east coast while not having a detrimental affect (and
actually having a positive effect) on migratory shorebird populations.

Since shorebird and invertebrate species are similar (at least by order) on
both coasts, my questions are: How do migratory shorebirds use east coast
mudflats? Do certain species use these areas, and are they different from
west coast shorebird species? How do they differ from west coast migratory
shorebirds?

Spartina is reported to reduce feeding and resting areas and affect visual
behavior cues in the NW. How is it that shorebirds on the east coast
benefit from Spartina marshes, and could there be benefits to shorebirds in
the Pacific NW in the long run?

If anyone has thoughts on this, or can refer me to someone who does, or
knows of pertinent literature, I'd be interested in knowing soon. Thanks.
avs at cco.net