Phytoplankton samples from inner and outer Kachemak Bay have more phytoplankton overall than last week. We are seeing an abundant amount of Heterocapsa spp. in Peterson Bay. This dinoflagellate is one of the smaller ones we see in Kachemak Bay. Heterocapsa is similar to Scrippsiella spp., which was abundant in Peterson Bay last week. These two phytoplankton can be differentiated by the asymmetrical horn and conical epitheca on Heterocapsa sp. as well as its small size, see illustration by Conrad Field for comparison. In outer Kachemak Bay Chaetoceros socialis was abundant both in Kasitsna Bay and Eldred Passage.
Additional information, including qualitative analysis of phytoplankton data, is available in the Phytoplankton Update for June 11th – June 17th.