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Harmful Algal Blooms
Harmful Algal Blooms
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Title: Harmful Algal Blooms

Description: You may notice a green, red or brown film on your favorite boating or swimming area in the summer. This coloring could mean that the water is affected by harmful algal blooms. Harmful algal blooms are an accumulation of tiny organisms known as algae and can release harmful toxins into the environment. Pictured is Gloeotrichia echinulata, at higher magnification showing colony filaments under epifluorescence microscopy and stained with Sytox Green (a DNA stain that is excluded from live cells). This bloom comes from the Upper Klamath Lake, Oregon.

Location: Upper Klamath Lake, OR, USA

Photographer: Dr. Barry H. Rosen
Photographer Email:
Photographer Organization: U.S. Geological Survey

Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.


Learn more about harmful algal blooms in USGS CoreCast episode 129.

File Details:
Type: JPEG image - 112.62 KB
Dimensions: 648 x 642
Resolution: 144 dpi

Suggest an update to the information/tags?

Algae (Set) RSS Media RSS Gloeotrichia echinulata Under Epifluorescent Microscope Microcystis aeruginosa Bloom
In: Water collection

Tags: Cyanobacteria algae corecastepisode129 cyanotoxin harmfulAlgalBloom lakes streams summer surfaceWater



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