June 30-July 2, 2012
Previous sample

This was from around a short pier surrounded by pondweed, where the water was about one metre deep. Some of the floating strands were taken along with other debris like hornwort, small leaves, and brown catkins. There was also a second sample scooped up from the bottom, which was mostly sand, home to many visible amphipods.

Diatoms were found throughout, especially Cocconeis, which was common both on films at the top and among settled debris. It also occurred alongside Rhoicosphenia on a ball of floating algae, apparently Cladophora though with sparse branching. Vorticellids were found on both this algae and larger plants, particularly the hornwort.

Free-swimming ciliates, rotifers, and some Cryptomonas were also found in both samples, but most often around the surface. The most common of these were oval and narrow types of spirotrichs, smaller Phyllopharyngea, and green Paramecium.

↬ Thanks to Michael Plewka, author of plingfactory: life in water, for the identification of Cephalodella.

Besides the types pictured here there was also a fast Synchaeta.