carp – Aquarius-Systems https://aquarius-systems.com Surface Water Management Equipment Thu, 15 Jan 2026 22:09:15 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://aquarius-systems.com/wp-content/uploads/2022/01/cropped-favicon-32x32.png carp – Aquarius-Systems https://aquarius-systems.com 32 32 Abundance of Common Carp in Lake Okabena https://aquarius-systems.com/abundance-of-common-carp-in-lake-okabena/ Fri, 04 Feb 2022 20:23:28 +0000 https://aquarius-systems.com/?p=3219 In southwest Minnesota, the Okabena-Ocheda Watershed District is tagging and tracking carp in an effort to find out where they congregate in the winter. The data is hoped to reveal the potential for a wintertime seining event. Lake Okabena has two to three times more carp than a healthy lake should have.

It’s been determined that a healthy lake can withstand 89 pounds of carp per acre. In Lake Okabena, the electro-fishing methodology showed two to three times that level of carp per acre.  The carp stir up sediment and phosphorus, reducing water clarity. Meanwhile, high levels of nutrients impacted Lake Okabena’s water quality, causing it to be added to Minnesota’s impaired waters list in 2010.

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]]> Carbon Dioxide Could Keep Asian Carp out of Great Lakes https://aquarius-systems.com/carbon-dioxide-could-keep-asian-carp-out-of-great-lakes/ Tue, 05 Jul 2016 23:00:00 +0000 In a research pond in La Crosse, Wisconsin, scientists from the University of Illinois at Urbana-Champaign and U.S. Geological Survey are testing the effectiveness of a new strategy to ward off an Asian carp invasion that’s threatening the health of the Great Lakes, including Lake Michigan.

 The study called for placing a carbon dioxide infusion system on one side of the pond that withdrew water, treating it with high levels of carbon dioxide and then pumping that carbon dioxide-rich water back into the pond.  Results showed that silver carp and bighead carp, two different species of Asian carp, avoided water treated with carbon dioxide as did native fish such as bigmouth buffalo, channel catfish and yellow perch.  However researchers are puzzled as to why the paddlefish did not avoid the area.
Asian Carp

Adding carbon dioxide to the water is indicative of poor habitat causing the fish to swim away and look for more oxygen.  The carbon dioxide lowers the water’s pH, making it more acidic.

If adding carbon dioxide to the water does go into a real-world setting, it would deter the movement of all fish species, so that’s something that needs to be considered before it moves to a field application.
Read More  https://afspubs.onlinelibrary.wiley.com/doi/10.1080/00028487.2016.1143397
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