File:Harmful Water Organisms (21461433360).jpg
Original file (1,360 × 1,024 pixels, file size: 794 KB, MIME type: image/jpeg)
Captions
Captions
Summary[edit]
.jpg&action=edit§ion=1){kind=link}
| Description |
Harmful Water Organisms — Here's a photo taken of gloeotrichia echinulata under an epifluorescent microscope which emits ultraviolet light. Using ultraviolet light, the filaments glow red from chlorophyll, while other pigments give various hues of purple, which may be a hint about the health of the cells. There may be organisms in lakes, reservoirs, rivers and streams, that produce natural toxins. When a harmful algal bloom is present with these toxins, there is a risk from drinking the water or consuming fish and shellfish. This organism is just one example. The Native American and Alaska Native communities that are dependent on subsistence fishing have an increased risk of exposure to these cyanotoxins. It is important to recognize the presence of an algal bloom in a waterbody and to distinguish a potentially toxic harmful algal bloom from a non-toxic bloom. Scientists at USGS created a guide which provides field images that show cyanobacteria blooms, some of which can be toxin producers, as well as other non-toxic algae blooms and floating plants that might be confused with algae. The guide also provides microscopic images of the common cyanobacteria that are known to produce toxins, as well as images of algae that form blooms but do not produce toxins. You can see the full report at on.doi.gov/HarmfulAlgalBlooms. |
| Date | |
| Source | Harmful Water Organisms |
| Author | U.S. Geological Survey from Reston, VA, USA |
Licensing[edit]
.jpg&action=edit§ion=2){kind=link}
|
This image was originally posted to Flickr by U.S. Geological Survey at https://flickr.com/photos/27784370@N05/21461433360 (archive). It was reviewed on 19 January 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
|
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
|
 |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:37, 19 January 2018 | | 1,360 × 1,024 (794 KB) | Artix Kreiger 2 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on de.wikipedia.org
.jpg&oldid=810506240){kind=link}