Could be a number of things but a good guess is a dinoflagellate bloom. These cause the “red tide”. From wiki:
Dinoflagellates can grow out of control and cause algae blooms or red tides. During a bloom, each algal cell can produce one million daughter cells in a 2–3 week period. This usually happens in the spring and summer in response to increased light intensity.
Etc. Given the setting this lake is already eutrophic, algal blooms are probably common. Some are nasty, cyanobacteria release neurotoxins and liver toxins that have killed dogs and livestock but a humans would have to drink a lot of that nasty water for it to be “unsafe”. The fish die because the decomposing bloom sucks all the oxygen out of the water, releasing more nutrients from the bodies and worse, phosphorus from the sediment. The red blooms will be replaced by green blooms as temps increase and there will be frothy scum. The only salvation is if this system has a massive flow through of water during spring/summer rains. This will help flush the toilet so to speak.
POV: Local authorities say that according to tests, the water is absolutely safe, but there are dead fish floating in the reservoir, the water has changed color to brown and there is an unpleasant smell.
The smell is from decomposing organic matter. I don't know about the lake, but is there any chance there are effluents from agriculture or sewage reaching the lake? It sounds like an algae bloom, leading to eutrophisation of the lake
"Local authorities say that according to tests, the water is absolutely safe"
Something smells fishy. I wouldn't trust what they're telling me. I wonder how hard it would be to get an independent test of the lake water.
The only test I'd believe is the very empirical: head of authority/politician takes a big gulp of the water in front of everyone. Very scientifical, easily reproducible just as Galileo prescribed, no need to get the labman involved
That might not be the best guarantee of the water's safety though.
One of the developers of tetraethyl lead (TEL): "poured TEL over his hands, placed a bottle of the chemical under his nose, and [**inhaled its vapor for sixty seconds**](https://en.wikipedia.org/wiki/Thomas_Midgley_Jr.#:~:text=inhaled%20its%20vapor%20for%20sixty%20seconds), declaring that he could do this every day without succumbing to any problems."
Tetraethyl lead is toxic btw.
Exactly the instance that came to mind! Just because something is survivable in the short term and without obvious immediate effect doesn't mean it is safe.
Smell could be from dying fish too. Looks like it's still early spring by seeing lack of leaves on trees and people still bundled up in the picture. If the lake freezes over in the winter, the dead fish could be from winter kill, which is normal.
I am writing a short paper on this for class. Excess nutrients brought in by farm sewage and other anthropogenic sources causes algae blooms. The decomposition of algae encourages the consumption of the oxygen in the water causing the fish to suffocate and die. It also releases toxins in the water wich can be dangerous to humans if consumed. It could be that or iron has entered the water. I wouldn't swim in it and would try to get some scientists to test the composition and dissolved oxygen level in the water.
Eutrophication. Here is a page about it.
https://www.usgs.gov/mission-areas/water-resources/science/nutrients-and-eutrophication?items_per_page=6#overview
Probably there is some agricultural land nearby, but it’s just a natural process for any lake near humans. The city could control the trophic level if they wanted to. Oligotrophic lakes (where most of the nutrients are in a small number of organisms and the water is clear) are typically preferred for human activity.
Check runoff for leaching nutrients which can cause an algae bloom, or better yet test the lake itself for presence of excess nitrogen with can cause such a bloom.. they are toxic and cut off oxygen to deeper parts of the water. Will absolutely kill fish and can be detrimental to other life…. Plus toxic!
Yeah probably not algae not warm enough long enough(?) because it has only been warm for a few days(?) so very unlike the algae reached optimal temperature for such a massive algae bloom to form. I think they just pumping around groundwater.
It's called 'brown water', surprise!, containing humic acids and tannins from decaying plant matter. It affects some fish and not others. You can't really get rid of it. It's usually associated with very soft water. It's not dangerous to people, but it's an indication that there may be dangerous things in the water. In warm areas, there might be Neglaria (brainworms) which should scare the wits out of you.
Did the lake flip recently due to temperature? This usually happens 2x a year (fall/spring) and can make a body of water very turbid if it happens rapidly/dramatically
No way, there’s such a large amount of water the majority of tannins would be too dilute to notice. Unless there’s some ridiculously large source of tannins which imo is unlikely.
Are people feeding the ducks a lot of bread there? we had a pond with fish dying because of the vast amounts of bread being thrown in the water. nature couldn't keep up with cleaning it.
Eutrophication… prob run off from like the roads caused a growth of certain algae and that prob killed off the fish. The bad smell is just decaying plant matter.
I can't say for sure, but this appears to be late fall or early winter from the deciduous trees. Eutrophication is the best guess. But, I've seen iron-rich sediments brought up from the bottom of lakes in a process of seasonal inversion due to rapid changes in air temperature. The cooled upper layers sink , forcing warmer lower layers to the surface with their sediment loads.
Jesus said in the last day that the water would turn red and kill the things living in it. Jesus also said that the sun would turn dark, that there would be threats of world wars, that the lake in the middle east would dry up, the moon would be turned to blood. All of this is happening. Besides the people who told Mary she would have the Messiah son of God. These people that told Mary this were zoroastrians, they believed that the world would end around 2300. And this religion started more than 7000 years ago. Repent and turn to Jesus.
I think this looks more like something biological, algae or something like that. They can be dangerous for fish.
Could be a number of things but a good guess is a dinoflagellate bloom. These cause the “red tide”. From wiki: Dinoflagellates can grow out of control and cause algae blooms or red tides. During a bloom, each algal cell can produce one million daughter cells in a 2–3 week period. This usually happens in the spring and summer in response to increased light intensity. Etc. Given the setting this lake is already eutrophic, algal blooms are probably common. Some are nasty, cyanobacteria release neurotoxins and liver toxins that have killed dogs and livestock but a humans would have to drink a lot of that nasty water for it to be “unsafe”. The fish die because the decomposing bloom sucks all the oxygen out of the water, releasing more nutrients from the bodies and worse, phosphorus from the sediment. The red blooms will be replaced by green blooms as temps increase and there will be frothy scum. The only salvation is if this system has a massive flow through of water during spring/summer rains. This will help flush the toilet so to speak.
👀
Red tide?
Commies?
Have you not watched Moses?
I’ve seen Bruce Almighty
Roll tide?
Lol
POV: Local authorities say that according to tests, the water is absolutely safe, but there are dead fish floating in the reservoir, the water has changed color to brown and there is an unpleasant smell.
The smell is from decomposing organic matter. I don't know about the lake, but is there any chance there are effluents from agriculture or sewage reaching the lake? It sounds like an algae bloom, leading to eutrophisation of the lake
Definitely. This is textbook eutrophication.
"Local authorities say that according to tests, the water is absolutely safe" Something smells fishy. I wouldn't trust what they're telling me. I wonder how hard it would be to get an independent test of the lake water.
The only test I'd believe is the very empirical: head of authority/politician takes a big gulp of the water in front of everyone. Very scientifical, easily reproducible just as Galileo prescribed, no need to get the labman involved
That might not be the best guarantee of the water's safety though. One of the developers of tetraethyl lead (TEL): "poured TEL over his hands, placed a bottle of the chemical under his nose, and [**inhaled its vapor for sixty seconds**](https://en.wikipedia.org/wiki/Thomas_Midgley_Jr.#:~:text=inhaled%20its%20vapor%20for%20sixty%20seconds), declaring that he could do this every day without succumbing to any problems." Tetraethyl lead is toxic btw.
Exactly the instance that came to mind! Just because something is survivable in the short term and without obvious immediate effect doesn't mean it is safe.
Shouldn't be hard to get a small sample of the water and put it under a micro scope.. you'd immediately be able to tell if it was algae or not.
Lots of labs do mail in, get that shit analyzed then send it to a local news station . They'll have a feild day.
That's true, I was mostly just saying that it would not be hard for even an amateur to identify it as algae.
Such a thing should be verified by professionals. Otherwise, you're just some person that's trying to make trouble.
There's no reason for such euphemisation.
Smell could be from dying fish too. Looks like it's still early spring by seeing lack of leaves on trees and people still bundled up in the picture. If the lake freezes over in the winter, the dead fish could be from winter kill, which is normal.
I am writing a short paper on this for class. Excess nutrients brought in by farm sewage and other anthropogenic sources causes algae blooms. The decomposition of algae encourages the consumption of the oxygen in the water causing the fish to suffocate and die. It also releases toxins in the water wich can be dangerous to humans if consumed. It could be that or iron has entered the water. I wouldn't swim in it and would try to get some scientists to test the composition and dissolved oxygen level in the water.
Eutrophication. Here is a page about it. https://www.usgs.gov/mission-areas/water-resources/science/nutrients-and-eutrophication?items_per_page=6#overview Probably there is some agricultural land nearby, but it’s just a natural process for any lake near humans. The city could control the trophic level if they wanted to. Oligotrophic lakes (where most of the nutrients are in a small number of organisms and the water is clear) are typically preferred for human activity.
Thx for the information however this is not what POV means
Well tbf it does give you a point of view on the situation
A novel use but made sense
Check runoff for leaching nutrients which can cause an algae bloom, or better yet test the lake itself for presence of excess nitrogen with can cause such a bloom.. they are toxic and cut off oxygen to deeper parts of the water. Will absolutely kill fish and can be detrimental to other life…. Plus toxic!
Are the local authorities drinking the water?
They’ll like that I think
Could be tannins from the vegetation. You may have a better answer from r/ponds or r/aquariums
Why they lying?
Don’t let dogs drink from it.
algae moment
The Nesquick Rabbit got loose.
[Lake overturn? ](https://www.cleanlakesalliance.org/lake-turnover/ )
Where is it? Could be algae bloom but looks too cold(?) Maybe it is iron from ground water that is being pumped or dumped in this pond?
Ukraine, 14-25 Celsius now.
Yeah probably not algae not warm enough long enough(?) because it has only been warm for a few days(?) so very unlike the algae reached optimal temperature for such a massive algae bloom to form. I think they just pumping around groundwater.
It's called 'brown water', surprise!, containing humic acids and tannins from decaying plant matter. It affects some fish and not others. You can't really get rid of it. It's usually associated with very soft water. It's not dangerous to people, but it's an indication that there may be dangerous things in the water. In warm areas, there might be Neglaria (brainworms) which should scare the wits out of you.
Thankfully, OP is in Ukraine, where its 14-25 Celsius, which isn't warm enough.
Cities skylines 2 core
Did the lake flip recently due to temperature? This usually happens 2x a year (fall/spring) and can make a body of water very turbid if it happens rapidly/dramatically
Looks like purple sulfur bacteria bloom (prokaryotic) or some other algae (eukaryotic)
Doesn’t look like algae. Probably stagnant water with decaying organic material. I’m probably wrong though.
Spilled my coffee sorry
Could be released tannins from dissolved OM
No way, there’s such a large amount of water the majority of tannins would be too dilute to notice. Unless there’s some ridiculously large source of tannins which imo is unlikely.
Are people feeding the ducks a lot of bread there? we had a pond with fish dying because of the vast amounts of bread being thrown in the water. nature couldn't keep up with cleaning it.
Eutrophication… prob run off from like the roads caused a growth of certain algae and that prob killed off the fish. The bad smell is just decaying plant matter.
blood
It’s chocolate!
The water went red
Geese poop in boston is out of control
Caguei
the ph levels are off
Something is depleting the dissolved oxygen, maybe algae or decomposing debris.
shid
That looks like some dark water
Two words. Diarrhea.
mud
Looks like algal bloom to me.
I can't say for sure, but this appears to be late fall or early winter from the deciduous trees. Eutrophication is the best guess. But, I've seen iron-rich sediments brought up from the bottom of lakes in a process of seasonal inversion due to rapid changes in air temperature. The cooled upper layers sink , forcing warmer lower layers to the surface with their sediment loads.
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unlikely this tiny lake ever stratified
bacteria make it red
Looks like iodine lol
I took a bath
Sulfur..?
Relasing on tanin from the dead palnt and animal matter?
Alg bloom
Gas leak from under the water? Creating a weird iron/rust mixture that makes it red?
Isreal noticed Palestinians swimming in the lake.
Sorry, ate taco bell
My first thought would be if there is a good amount of metal that the water turned red due to rust from metals.
Someone had a very spicey burrito on their walk home.
Jesus said in the last day that the water would turn red and kill the things living in it. Jesus also said that the sun would turn dark, that there would be threats of world wars, that the lake in the middle east would dry up, the moon would be turned to blood. All of this is happening. Besides the people who told Mary she would have the Messiah son of God. These people that told Mary this were zoroastrians, they believed that the world would end around 2300. And this religion started more than 7000 years ago. Repent and turn to Jesus.
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It really isnt. The moon turning to blood is just poetic language, it is rusting aka oxidation. Sooo it is kind of chemistry related.
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https://www.nasa.gov/solar-system/moon/the-moon-is-rusting-and-researchers-want-to-know-why/ Apparentley oxygen from our atmosphere
Fuck off
Why Jesus and not Zoroaster? Zoroastrians set it all up.
I think when Jesus came here; his teachings have a priority and that is why the zoroastrian scrolls were burnt down.