Critter Hunt at Lake Merritt with Naturalist Damon Tighe

Great turnout for citizen science activities at Lake Merritt! We've got something going here. Thanks to everyone who identified organisms, collected plankton and helped drive the underwater robotic vehicle, and especially to Damon who shared his natural history and photography expertise.

Here is a preliminary species list for the day. We saw and mostly photographed at least 23 species not including plankton. There were a lot of phytoplankton, mostly Chaetoceros and many zooplankton of the usual types (copepods in different stages, evadne, mollusk larvae, polychaete veligers). Rate-Our-Plankton level = Tiny Threads

CRITTER WALK Water quality:
Water Temperature 12top/
Salinity 30 ppt top/30 ppt bot
pH 7.5 top/7.5 bot
D.O. 9 ppm/7 ppm
Secchi 100 cm, Depth 150 cm

Red-eyed Medusa - Jelly- Polyorchis penicillatus
Sponge Halichondria bowerbankia
Sea anemones
Diadumene ...more ↓

Posted on January 12, 2020 19:32 by ktnoon ktnoon | 0 comments | Leave a comment
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The goal of this project is to follow the aquatic species community in Lake Merritt from 1966 into the future!

Oceanographers Jim Carlton of Williams College and the Smithsonian and Andrew Chang and colleagues from the Smithsonian Lab in Tiburon are collaborating with the project to allow citizen scientists to help extend their observations into the future.

Observations will ...more ↓

Mini ktnoon created this project on June 28, 2017

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