Luciën
Member
Woke up this morning seeing this beautiful vid. Probably most of you know the channel, but I just wanted to share.
Woke up this morning seeing this beautiful vid. Probably most of you know the channel, but I just wanted to share.
I atought about it too then I was imagining some natives fine tuning their co2 reg with a really big cylinder 🤣where does a river like that get a sufficient CO2 source from, decomposing matter?
I think the spring water <"welling up through the stream bed is carbonate rich">, the <"presence of Charophytes"> is usually a good indicator for hard water and the spring water would continually replenish the HCO3- ions for those plants that can use bicarbonate as <"their DIC source">.where does a river like that get a sufficient CO2 source from, decomposing matter?
Edit: Beat me to the post.Bonito region, underlain by karst formation, is a rarity with clear spring fed alkaline water comparable to Lake Malawi and Tanganyikan in Africa.
Spring water is not necessarily hard water or bicarbonate saturated unless it passes through limestone formation. Spring water is emerging groundwater clear and free of sediments, and high in dissolved CO2 as it is filtered through bacterial active soil zone. Surface runoff fed streams tend to be sediment and tannin rich, and CO2 saturated from rainwater passing through the atmosphere and running over decaying matter. In either case, there is natural replenishment of CO2 from natural inflow fish tanks do not have.Hi all,
I think the spring water <"welling up through the stream bed is carbonate rich">, the <"presence of Charophytes"> is usually a good indicator for hard water and the spring water would continually replenish the HCO3- ions for those plants that can use bicarbonate as <"their DIC source">.
cheers Darrel
No, spring water doesn't need to be hard, it is more the presence of the Charophytes that tells you the water is hard. Where I live it is all limestone and a lot of the springs are <"tufa forming"> where the CO2 has some out of solution at the spring head and calcium carbonate (CaCO3) is deposited.Spring water is not necessarily hard water or bicarbonate saturated unless it passes through limestone formation.