The Planted Tank Forum - View Single Post - Why do plants grow algae free in nature?
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post #13 of (permalink) Old 01-19-2013, 10:02 PM
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Originally Posted by kwheeler91 View Post
I know most plants get algified on the older growth parts from earlier in the year and some dont grow in water for long. I have low spots out back that L. palustris and P. palustris sprout up in when it rains, but the water usually vanishes before algae has a chance to hit.

But there is also a blue hole nearby that feeds a stream used for raising trout and it is bursting with algae free willow moss all year long.

I also think back to a thread on here about the guy's trips to a florida spring and the pics of aquatic plant life looked flawless.

Anyone with an 8th grade education knows the meaning of the word niche, I was looking for something a little more like... scientific findings perhaps? Maybe that cooler temps earlier in the year lead to larger amounts of dissolved gasses, including co2 AND o2. Little bit shorter day length, complete lighting spectrum? And then what allows some plants to successfuly combat algae year long and win? Oh yeah and most importantly, without someone blasting co2 into the stream.

Maybe the question could use a little refining, but answers like darwinism and everything has its niche leaves a little something to be desired.
Being in OH and spring fed system, there will be lots of cold water plants along that. You can likely guess why, CO2.

Same in the springs in Florida, but the water is 12-15F warmer from those springs.

Some spots are flawless, but over on the other side?
Lots of algae, maybe not right then, but later in the season.
When and where are extremely important. So what specifically about the niche do you think would provide good habitats for the plants and for the algae?

Good growing conditions for the plants?(eg CO2?)
Light, duration and photoperiod?
Water level changes?
Sediment type/s?

7 factors right there, and there are more.

Most aquatic plant research is concerned about killing aquatic plants, not providing them with good conditions and then trying to get rid of algae. There's not much economic rational to study aquatic plant tanks.

There is a lot of economic rational to study aquatic weeds. Billion's vs a few hundred thousand perhaps.

Tom Barr
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