The Monitor Daily

Friday, March 5, 2021
Log in

As a participant in the Amazon Services LLC Associates Program, this site may earn from qualifying purchases. We may also earn commissions on purchases from other retail websites.

  • Home
  • Politics & National News
  • Business News
  • Tech & Science
  • Health & Lifestyle
  • About us
    • Contact US
    • Privacy Policy GDPR
    • Terms of Use
  • Latest News
    • Stormy Planet
    • US Surgeon Performs Face Transplant
    • 2017 MTV VMAs Nominations Are In And Voting Is Now Open
    • Bright House: Free McAfee AntiVirus and Adult Controls
    • Antarctic Yeti Crab Gets Formal Scientific Name
    • Spiders Take Over Australian Town
    • Interesting Facts About the Apollo 11 Mission
    • Social Smoking or The New Landmark of Elegance Among Young Women
    • Rare Weasel Returns To Washington State

Pages

  • About The Monitor Daily
  • Contact US
  • Our Team
  • Privacy Policy GDPR
  • Terms of Use

Recent Posts

  • NYC Man Snaps Photo of the Victim After Sucker-Punching Him in Broad Daylight Jun 29, 2018
  • California Woman Performs Home Abortion By Asking Boyfriend to Kick Her in The Belly Jun 28, 2018
  • Nashville Man Arrested After Throwing Cocaine in Police Officer’s Face Jun 28, 2018
  • Brittany Pilkington Wants Psych Eval Before Sentencing Jun 27, 2018
  • Fayetteville Mom Behind Bars For Feeding Children Lighter Fluid Jun 27, 2018
  • Missouri Police Arrested Angry Customer Who Vandalized Nail Salon Jun 26, 2018
  • Queensland Mother Mutilated After Non-Invasive Eye Procedure Goes Sideways Jun 25, 2018

Grand Canyon Fish and Wildlife Tainted by Mercury

Aug 29, 2015 By Robert Moore Leave a Comment

Grand Canyon’s Fish and Wildlife Tainted by Mercury

A group of researchers found large concentrations of mercury and other toxic chemicals in the fish, insects, and plants of Colorado River in the Grand Canyon. Study authors said that the concentrations often exceeded the safe limits for wildlife and even humans in some areas.

According to the U.S. Geological Survey, Colorado River is no longer shielded from polluters by its relatively remote location. High concentrations of selenium and mercury were found in the Grand Canyon as well.

Both chemicals hinder wildlife’s reproduction, stunt growth, and sicken the aquatic and land species. The research team acknowledged that selenium may occur naturally in the region, but air pollutants including mercury can travel half the globe and taint the ecosystem.

Researchers took samples from six locations along the river and found that mercury levels were dangerously high in the fish and other small animals dwelling in the canyon. Moreover, in some fish species mercury levels were so high that they even threatened the life of humans.

Fortunately, the rainbow trout, a fish very popular with local fishermen, did not contain hazardous concentrations of the toxic chemical. Ted Kennedy,, one of the researchers involved in the study explained that both the trout in Glen Canyon and the trout downstream was safe to eat under EPA standards.

The recent study is unique because it is the first that tries to assess mercury pollution in the Grand Canyon. USGS researchers analyzed the trout there but five other species were also taken into consideration including carp and the rare speckled dace. Trout is of particular concern because humans usually prefer it.

The team admitted that they need to study more to learn whether eating fish from the Glen Canyon and Grand Canyon is hazardous to health for humans.

During the study they made some surprising findings. They learned that small rainbow trout was more likely to carry high concentrations of mercury than bigger trout. This finding is at odds with a widespread theory in biology called biomagnification, which states that polluter concentrations are higher in the upper areas of the food chain.

Kennedy explained that the oddity may be caused by Grand Canyon ecosystem’s particularities. For instance, in the Grand Canyon insects are scarce along the river due to temperatures and other circumstances. So, small fish can survive by eating only insects, while larger trout needs something else to supplement its calorie needs. As a result large trout eat algae, while smaller trout eat bugs, which are laden with mercury and other toxic chemicals.

Image Source: Wikipedia

Share this:

  • Tweet
  • Share on Tumblr

Filed Under: Tech & Science

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 34 other subscribers

Operation Paperclip

Remembering Georg von Tiesenhausen, Last Member of Von Braun’s Rocket Team

Jun 6, 2018 By Ryan Harriss Leave a Comment

giant ground sloths on white background

It Seems that Giant Sloths Once Roamed Earth, and Humans Used to Hunt Them? (Study)

May 8, 2018 By Matthew Riley Leave a Comment

sn 2001ig supernova explosion and images of its stars

A Star Escaped a Supernova Explosion, and NASA Snapped its Picture

May 7, 2018 By Matthew Riley Leave a Comment

ngc 6420 galaxy resembling a giant butterfly

Hubble Spots Giant Butterfly Formed by a Black Hole and Stellar Winds (Study)

Apr 20, 2018 By Matthew Riley Leave a Comment

infrared image of a dog

Space Technology Could Help Protect Earth’s Endangered Species

Apr 5, 2018 By Matthew Riley Leave a Comment

snake slithering on a beige background

Kirigami Skin Is Helping a Soft Robot Slither Like a Snake (Study)

Feb 26, 2018 By Matthew Riley Leave a Comment

woolly mammoth

Ice Age Tracks Reveal How Young Mammoths Cared for Adult Ones (Study)

Feb 14, 2018 By Matthew Riley Leave a Comment

High Priestess tomb.

Archaeologists Discovered 4400-Years-Old High Priestess Tomb Near Cairo

Feb 5, 2018 By Matthew Riley Leave a Comment

dwarf galaxies

Dwarf Galaxies Challenge the Entire Dark Matter Cosmology (Study)

Feb 4, 2018 By Matthew Riley Leave a Comment

NASA Scientists and Food Experiments

NASA Scientists to Test if Astronauts Could Eat Their Own Poo

Feb 1, 2018 By Matthew Riley Leave a Comment

KFC Smoky Wings Box Can Turn into Awesome Drone

Jan 26, 2018 By Robert Moore Leave a Comment

Tesla Model S

Tesla Model S Involved in Autopilot Malfunction Accident

Jan 24, 2018 By Joe Hennessey Leave a Comment

Duke Nukem.

John Cena Cold Feature in Duke Nukem Movie

Jan 23, 2018 By Matthew Riley Leave a Comment

Battlefield One

Battlefield One Apocalypse DLC to Land in February

Jan 20, 2018 By Ryan Harriss Leave a Comment

Related Articles

  • Operation Paperclip

    Remembering Georg von Tiesenhausen, Last Member of Von Braun’s Rocket Team

    Jun 6, 2018
  • giant ground sloths on white background

    It Seems that Giant Sloths Once Roamed Earth, and Humans Used to Hunt Them? (Study)

    May 8, 2018
  • sn 2001ig supernova explosion and images of its stars

    A Star Escaped a Supernova Explosion, and NASA Snapped its Picture

    May 7, 2018
  • ngc 6420 galaxy resembling a giant butterfly

    Hubble Spots Giant Butterfly Formed by a Black Hole and Stellar Winds (Study)

    Apr 20, 2018
  • infrared image of a dog

    Space Technology Could Help Protect Earth’s Endangered Species

    Apr 5, 2018
  • snake slithering on a beige background

    Kirigami Skin Is Helping a Soft Robot Slither Like a Snake (Study)

    Feb 26, 2018
  • woolly mammoth

    Ice Age Tracks Reveal How Young Mammoths Cared for Adult Ones (Study)

    Feb 14, 2018
  • High Priestess tomb.

    Archaeologists Discovered 4400-Years-Old High Priestess Tomb Near Cairo

    Feb 5, 2018
  • dwarf galaxies

    Dwarf Galaxies Challenge the Entire Dark Matter Cosmology (Study)

    Feb 4, 2018
  • NASA Scientists and Food Experiments

    NASA Scientists to Test if Astronauts Could Eat Their Own Poo

    Feb 1, 2018

Categories

  • Business News
  • Entertainment
  • Featured
  • Health & Lifestyle
  • Nature
  • Politics & National
  • Sports
  • Tech & Science
  • US
  • World

Copyright © 2021 TheMonitorDaily.com

About · Privacy Policy · Terms of Use · Sitemap · Contact

This website uses cookies to ensure you get the best experience on our website. Learn more.