Phytoplankton Species Composition and Abundance in the Sacramento-San Joaquin River Delta: Microscopic Enumeration of USGS Samples, beginning in 2016 (ver. 2.0, December 2025)
December 18, 2025
This dataset contains multiple types of data characterizing phytoplankton in the Sacramento-San Joaquin Delta (California, USA). 1) Bright field microscopy was used to identify and enumerate phytoplankton community composition; 2) Epifluorescent microscopy was used to enumerate picophytoplankton (phytoplankton cells less than 2 microns in diameter) and, 3) a categorical visual index, Microcystis Visual Index (MVI), was used to rapidly estimate the abundance of Microcystis colonies near the surface.
Revision History
First release: June 22, 2023
Revision 1.1: December 28, 2023
Revision 2.0: December 11, 2025
Citation Information
| Publication Year | 2025 |
|---|---|
| Title | Phytoplankton Species Composition and Abundance in the Sacramento-San Joaquin River Delta: Microscopic Enumeration of USGS Samples, beginning in 2016 (ver. 2.0, December 2025) |
| DOI | 10.5066/P13L6RZD |
| Authors | Emily T Richardson, Keith Bouma-Gregson, Tamara Kraus, Katy O'Donnell, Crystal L Sturgeon, Jeniffer Soto Perez, Ayelet Delascagigas, Kyle K Nakatsuka, Dylan J Burau, Alan D Gelber, Balthasar L Von Hoyningen Huene, Nathan I Jumps, Brian Bergamaschi, Maura Q Uebner, Patrick C Dellwo, Hieu (Tommy) T Ly, Malanyon Adams, Morgan E Illman, Tyler A. Beddingfield, Ariana M Maestas, Amelia Ayers |
| Product Type | Data Release |
| Record Source | USGS Asset Identifier Service (AIS) |
| USGS Organization | Sacramento Projects Office (USGS California Water Science Center) |
| Rights | This work is marked with CC0 1.0 Universal |