Posts Tagged ‘aquatic’

animals and plants to put into a large closed ecosystem? bottle biology, must be both aquatic and terrestrial?

Question by Chris B: animals and plants to put into a large closed ecosystem? bottle biology, must be both aquatic and terrestrial?
it would be made up of 10 2Litre coke bottles and maybe a couple of the old mason jars if i can get them. bottles will be connected by pvc pipe to allow animals to go between sections.
must have both aquatic and terrestrial
must have both plants and animals living in each section

current ideas:
Aquatic
use 60% as aquatic
using elodea for oxygen production
using whatever small animals come in the water from the pond as well as to get bacteria?
guppies or maybe a goldfish to create waste for nutrients for plants? (what plants should i use?)
possibly cheat the animal for both sections using small frogs from the pond?
maybe triops or shrimp
snails to eat algae

Terrestrial
what plants should I use?
types of insects?

suggestions?
thanks

Best answer:

Answer by DrDontheTermiteGuy
Stick with simple plants. Add some compost for bacteria and fungi. Set it all up with the lids off for a week or more. Use what stays/arrives. It will probably not gain stability, so don’t fret if it cycles out of control and crashes.

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Can a triop (triop longicaudatus) survive eating only algea or other aquatic plant life?

Question by Rain: Can a triop (triop longicaudatus) survive eating only algea or other aquatic plant life?
I’m doing a high school science fair project on closed evnciromental systems and I need an animal to breath all the oxygen that a plant would make or a way of absorbing the oxygen while supplying carbon dioxide. Other than triops, I am considering using Microbes or earth worms in soil.

Best answer:

Answer by emucompboy
Algae: no. Triops quickly grow beyond the algae-eating stage.

Other aquatic plant life: maybe. They’re omnivorous; I never tried setting on on an all-vegetarian diet. A problem I’ve found with Triops is that they tend to be fragile, die for no particular reason, and even when everything seems to be going well, die at about six weeks anyway.

A better choice for a “biosphere” might be either ostracods (“seed shrimp”) or cyclops for fresh water. You can get these critters from pond mud.

Near where I live, I used to be able to get small freshwater limpets that would eat biofilm algae. I’d find them on the sides of leaves of water hyacinth.

If you’re okay with saltwater, you can try brine shrimp.

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