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TR Memescape

  • Talk Rational: list of posters you're not allowed to respond to in my threads.

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11
No one has missed the point, Hawkins.
The fact remains:  there is a dynamic equilibrium between minerals concentrated in bacteria (or protozoa, etc.) and floating free, soluble, in the soil. The free, soluble, ions can (1) be taken up by another microbe (2) be leached by rainwater or (3) be taken up by a plant root. Yes, proximity of the source increases the probability of (3). But it's still nowhere close to 100%.
I don't know what the percent is. But it's got to be pretty close to 100% because soil scientists like Elaine Ingham tell us that if you measure the soluble fertilizer content of rainforest soils you will barely get a reading at all. Which is really interesting because it tells us that some of the best plant growth on the planet is achieved entirely without a man-made product which most mainstream agriculturalists think is indispensable for growing plants. That is, commercial fertilizers.
Mother of All Non-Sequiturs.
12
No one has missed the point, Hawkins.
The fact remains:  there is a dynamic equilibrium between minerals concentrated in bacteria (or protozoa, etc.) and floating free, soluble, in the soil. The free, soluble, ions can (1) be taken up by another microbe (2) be leached by rainwater or (3) be taken up by a plant root. Yes, proximity of the source increases the probability of (3). But it's still nowhere close to 100%.
In fact, many types of trees take measures to increase that probability, by attracting microroganisms back into the nutrient depleted zone close to their roots. I wonder why they would need to do that.
13
It would be fun to study up on the dendrochronology thing and engage you on that topic again. You would fold like a cheap card table. The only reason you think you won is because I didn't really have the resources at the time to study up on the topic properly.
:rofl:

"I would totally kick your ass! Make you cry like a little baby! You're lucky my mom is coming to pick me up"
14
Dave all that has to happen for nutrients to be in a form that can be subject to leaching is for them to be water soluble. Funnily enough that's also the form they have to be in for them to be available to plants.
Yes but what you keep missing even though I've talked about it several times is the fact that there's a very short distance between the ass end of a protozoan and the root hair on which he takes a dump.  And there's a very short time span between when this protozoa poop leaves the protozoa's ass and enters the root hairs' mouth.  Yes I'm anthropomorphizing here a bit to make a point. I do realize that there is no actual ass and no actual mouth, okay? The point of all this is that the nutrients don't have a chance to get leached away because the nutrient Loop is so tight.
You know, now that I read this again, it's not as wrong as your previous assertions. I think that you have (quietly) aknowledged that it's soil concentration that determines nutrient uptake, and that leeching occurs- It's just that there's not much time for leeching to happen when microorganisms close to the roots release nutrients. Am I right about that?
15
Rainforest.

Focus.
Leaching

Focus.
None to speak of in rainforest soil. 

But let's think about this ...

If I cut ONE big tree in the rainforest down to the stump and coppice it every year ... just ONE ... a big one ... So that some sunlight can reach a small patch of forest floor ...

What will happen?

Will I suddenly experience leaching?

Why or why not?

Looks like you found your answer:

Quote
A common event in the tropical rainforest is the fall of an emergent tree, usually during a tropical thunderstorm. In fact, it is estimated that tree turnover rates in some rainforests are every 80-135 years. When one of these giants--laden with lianas connected to neighboring trees--falls, it takes out a sizeable portion of the canopy. This hole in the canopy is known as a "light gap" because direct sunlight reaches the floor in contrast to the usual 1-5 percent under full canopy conditions. The opening of a light gap brings many changes to the section of rainforest.

The light gap is rapidly colonized by the same pioneer species that colonize clearings including trees like cecropia, balsa, macaranga, musanga, and bamboo, and shrubby plants like gingers, bananas, nightshades, climbing lianas, and rattan palms. These species are well-adapted for rapid growth, but not for long-term existence in the forest. Their often white wood and leaves with poor chemical protection are subject to infection and infestation by insects. Generally, these pioneers flower rapidly and produce numerous fruits, but are soon overtaken by the hardier, better adapted hardwood trees which fill in the gap in the canopy. Many forest tree species are dependent on light gaps to complete their life cycle.

As a result of the increased light and abundance of fruits produced by gap colonists, light gaps are areas of increased animal activity. Carnivorous animals follow the herbivorous animals that are attracted to the fruiting plants.

I don't see anything about leaching :dunno:
16
Dave all that has to happen for nutrients to be in a form that can be subject to leaching is for them to be water soluble. Funnily enough that's also the form they have to be in for them to be available to plants.
Yes but what you keep missing even though I've talked about it several times is the fact that there's a very short distance between the ass end of a protozoan and the root hair on which he takes a dump.  And there's a very short time span between when this protozoa poop leaves the protozoa's ass and enters the root hairs' mouth.  Yes I'm anthropomorphizing here a bit to make a point. I do realize that there is no actual ass and no actual mouth, okay? The point of all this is that the nutrients don't have a chance to get leached away because the nutrient Loop is so tight.
"fact"?
17
Science / Re: Direct Down Wind Faster Than The Wind
Last post by Heinz Hershold -
Well, one thing to add - that that "other frame of reference" is the one where the surface under the cart isn't moving.

I am glad you added that! That is exactly where the cart on the treadmill experiment fails!

Cold One has admitted that the belt deformations under the wheels are real.

I have shown my calculations that the belt that is directly under the wheels is moving through an arc, and moving with an angular velocity of 105 rad/sec.

No matter what inertial reference frame you choose to stop the linear motion of the top belt surface, you cannot find an IRF where the rotation through the arc "isn't moving"

That is what you people keep missing in your naive "analysis" of this and that is why you bought into this nonsense.
18
Science / Re: Direct Down Wind Faster Than The Wind
Last post by Heinz Hershold -
The day is done and we had some success but also a disappointment.  The balloon release was somewhat a debacle due to circumstances so I have no video of it.  Due to the crowds and huge coned-off area for the top speed trials (think Bonneville Salt Flats) the BB was forced to stay near the side of the lakebed.  I had thought we were heading close to directly down wind but we were not, there was a crosswind component.  Tried my best to release the balloons in line and well ahead of the BB, only to see them tumbling off line as I was grabbing for the camera (was kind of a big deal to kick the rear hatch open and get it closed). 

See attached photo of the balloon bomb load.  The red ones are two feet in diameter.

On the plus side, I did get some decent footage of the BB a bit after the balloon effort, where we were able to angle a bit more directly downwind and the BB was making 20 mph.  We had a PVC pipe across the roof of the car, holding a streamer to indicate airflow direction relative to the car.  This is the 70MB .mov file I have that looks pretty good.

I'm tired now so will think more tomorrow about details of sharing the video.

To cut to the chase, no evidence to support the claim of the cart going ddwfttw. You did not see, nor did you record, the cart catching up to or passing any balloons blowing in the wind.

I do appreciate that you made an honest effort and I hope that you and your son had a nice day in the desert. It must have been fun! Thanks.
19
I believe it's time to leave this country.
20
What astounds me is that Dave has been there. On the ground. Seen rainforest in all its splendour. And yet, here we are.

I can only guess he has a sort of self-inflicted blindness when it comes to plants, be they daisies or vanilla orchids or lambkill.

I wonder how many of those edge colonising plants are things like dumb cane or bead vine or castor plant or whatever plant it is that poison dart frogs ingest their poison from.
Probably most of them. And all my goats and sheep will probably die and the ones that don't will yield poison milk and the Wai Wai people will drink it and die no doubt.

Lol
Nothing quite so dramatic,
Just the milk will contain an ingredient that causes impotence and when the Wai Wai find out, your ass will be grass. In the most HMGest way possible.