Duckweed and goldfish

How are goldfish able to kill off duckweed? Wouldn’t the duckweed kill off the goldfish due to the lack of oxygen and nutrients in the pond? What is the biological makeup of duckweed? What’s your background surrounding duckweed?

Can duckweed populate a bigger body of freshwater such as a lake (ex: Gull Lake in Brainerd, Minnesota)? If so, at what level does it populate the water? What effects does it have on the ecosystem there and at what level?

1 Comment (Open | Close)

1 Comment To "Duckweed and goldfish"

#1 Comment By Downtoearthdigs On 09/29/2016 @ 11:21 am

Goldfish, Koi and grass Carp can help with pond Duckweed, but will not eliminate it completely.
Our expertise is more geared to garden ponds, a much smaller scale then lakes.
I would suggest contacting the MN DNR for specific information on your questions.
I have listed several links for you as the very matter of aquatic weeds is well studied in the great state of MN!

https://www.gardeningknowhow.com/plant-problems/weeds/duckweed-control.htm ^[1]

http://www.dnr.state.mn.us/aquatic_plants/floatingleaf_plants/duckweeds.html ^[2]

http://cues.cfans.umn.edu/old/extpubs/6955aquatic/DG6955.html ^[3]

http://files.dnr.state.mn.us/natural_resources/water/lakes/vegetation_reports/11021800.pdf ^[4]

http://www.dnr.state.mn.us/index.html ^[5]

Article printed from Gardening Know How Questions & Answers: https://questions.gardeningknowhow.com

URL to article: https://questions.gardeningknowhow.com/duckweed-and-goldfish/

URLs in this post:

[1] https://www.gardeningknowhow.com/plant-problems/weeds/duckweed-control.htm: https://www.gardeningknowhow.com/plant-problems/weeds/duckweed-control.htm

[2] http://www.dnr.state.mn.us/aquatic_plants/floatingleaf_plants/duckweeds.html: http://www.dnr.state.mn.us/aquatic_plants/floatingleaf_plants/duckweeds.html

[3] http://cues.cfans.umn.edu/old/extpubs/6955aquatic/DG6955.html: http://cues.cfans.umn.edu/old/extpubs/6955aquatic/DG6955.html

[4] http://files.dnr.state.mn.us/natural_resources/water/lakes/vegetation_reports/11021800.pdf: http://files.dnr.state.mn.us/natural_resources/water/lakes/vegetation_reports/11021800.pdf

[5] http://www.dnr.state.mn.us/index.html: http://www.dnr.state.mn.us/index.html

Have any questions about this topic? Visit us at https://questions.gardeningknowhow.com to ask your questions and get friendly answers from gardening experts.

You can also find us at:
'Like' us on Facebook: https://www.facebook.com/gardeningknowhow
Follow us on Twitter: https://twitter.com/gardenknowhow - @gardenknowhow
Follow us on Pinterest: https://pinterest.com/gardenknowhow/