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La Riviere Marsh on a spring morning

Cris

On a pleasant Sunday morning I headed down to the Visitor Center for the Don Edwards San Francisco Bay National Wildlife Refuge to join a field workshop led by microbiologist Wayne Lanier, my colleague in the Hidden Ecologies Project. Wayne led a group into the restored La Riviere Marsh, once the site of a large salt plant, to examine “life at the bottom of the food chain.” We were accompanied by Felicia, Rachel, and Molly, three young students that have been helping Wayne monitor a series of small pools aligned with an old saltworks levee running through the marsh. The students are keeping weekly records of the pools’ salinity and have been great assistants for Wayne.

Workshop at La Riviere Marsh

Workshop on the levee.

I was there to work on a request for aerial photographs of the subject pools. My nesting season blackout eliminated kite aerial photography so I used my pole aerial photograph rig instead. The challenge was taking a series of 40 or so photographs while walking down the levee and then stitching the results together in a long strip panorama. This set includes a few incidental pole aerial photography images of the site, two normal “around the horizon” aerial panoramas, and the long plan view strip panorama (which turned out rather well).

La Riviere Marsh

A normal pole aerial photography panorama.

Here is the strip panorama of the subject pools made by stitching 41 portrait format pole aerial photographs together. I ended up getting the best stitch using Photoshop CS6’s composite image feature. The source file is 3,870 x 39,000 pixels (74 Mb). At 300 dpi this would print at 13″ x 11 feet!

La Riviere Marsh

The image is best viewed large.

Here is a set of images from the session that I have posted to Flickr:

 

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