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We collected this data to better understand the timing of peak benthic cyanobacterial mat occurrence (specifically taxa associated with anatoxin production, Microcoleus and Anabaena) and mat anatoxin concentrations in rivers. We sampled in northern California on the South Fork Eel, Salmon, and Russian Rivers biweekly in 2022, and the Salmon River biweekly and South Fork Eel weekly in 2023. During each sampling event, we conducted benthic cover surveys, measured in-situ water quality parameters (temperature, pH, dissolved oxygen, conductivity), and collected surface water samples and targeted cyanobacteria samples. In 2022 on all rivers and in 2023 at the Salmon River, we also collected distributed non-targeted periphyton samples to characterize full-reach community compositions. All sampling was completed in 150-m reaches upstream of sensors recording continuous dissolved oxygen, conductivity, and temperature data. We analyzed surface water samples for nitrate, ammonium, soluble reactive phosphate, total dissolved carbon, and dissolved organic carbon. We also analyzed surface water samples from 2022 for major anions (Cl, SO4, Br) and cations (Na, K, Mg, Ca). Targeted-cyanobacteria and non-target periphyton samples were analyzed for anatoxins, relative abundance of algal taxa (via microscopy), ash-free dry mass, and chlorophyll-a. To estimate mean river depth within the dissolved oxygen footprint upstream of sensors, we kayaked portions of the river and collected river depth measurements. We also measured discharge at each river excluding the Salmon River (due to high discharge) and completed pebble counts at the South Fork Eel River to obtain sediment grain size distributions.
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The Salmon River Coloring Book
The Salmon River Coloring Book documents patterns of algal succession found on the Salmon River in northern California (a tributary to the larger Klamath River) which includes diatoms, cyanobacteria, and green algae. Algal groups are presented in coloring pages as both (1) macroscopic (i.e., visible to the human eye) forms and (2) microscopic (i.e., requiring a microscope) forms. On each page, rhyming text accompanies the line art to provide further educational information about each algal group. To aid in the coloring process, we also created a reference that provides actual photos from both the field and microscope. This work was hand-drawn in digital art applications and written by both Jordan Zabrecky and Taryn Elliott who both collected algal samples on the Salmon River in the summer of 2023 supported by Nation Science Foundation Division of Biology Grant Award #2042915. Access link: https://oercommons.org/courseware/lesson/141536
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- Award ID(s):
- 2042915
- PAR ID:
- 10670550
- Publisher / Repository:
- Open Educational Resources Commons
- Date Published:
- Subject(s) / Keyword(s):
- coloring book, cyanobacteria, rivers, Microcoleus, Anabena, northern California
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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