Friday, February 1, 2008

Otter Photoshoot!


After working a few days with Kim, we saw our first legitimate otter last week, basking in the sun on one particular log near the State Salmon Spawning Channel (yep, it's that easy...). Our work has consisted of bushwacking along the side channels of the Elwha, looking for signs of otter latrines - silvery/white blobs of goop and fish bones. The latrines act as a communication center and are often used by multiple otters but locations change with seasonal changes. I'm currently gathering information/previous research related to the influence that changes in streamflow and tidal fluxes have on the relative use and placement of these latrines.

According to Kim, otters usually live in small groups and may gather in larger numbers for social gatherings. After identifying the most heavily used latrines for the season, we can set painless snares that collect otter hair as the animal moves through the snare (a barbed wire contraption held together by a paperclip). This hair is then used for DNA analysis to determine the size of otter communities, looking for repetitious DNA indicative of the "locals". This abundance estimate will be compared to numbers following the dam removal as well as looking at the transfer of marine derived nutrients (if salmon return in the upper reaches).

The hydrology group is continuing to work on our designated snow courses for the Dungeness. Apparently we have a new course on Deer Ridge that is ridiculously beautiful and a wonderful little hike in - I look forward to participating in that one soon!

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