User:La flibuste/sandbox

Hypothesis

Testate amoebae are very verstatils creatures. Their short reproductif cycle would allow us to see clear evolutions of population thougt the 4 stamplings. They are abel to live in very wet and dry places. If the environnement changes and the conditions aren't fairly good animore, they are abel to enkyste themself if. Their squeleton is made out of silice or calcium, so after death this part stills remain in the soil and the speices is clearliy identifiable. Trough this we expect to find a large panel of amoebae species in every stampel. The humidity should affect differty every spieces and stampel. If the weather is hot and sunny, we expect to see enkysted amoebae because of the dryness. We also expect that the not quiet adapted dryness species should die rapidely and their empty squelettes should remain for one week. If the dryness is too sharp, it would affect the reproductiv cycle from every amoebae. So we 'll find the same amount for every species. If the waether is humide or we are watering the stampels, more species of amoebae will be found alive and reproduit themselves.

The different treatments influencent the humidity and pH, witch is an important factor.

The controls stampels should be the dryest and have the smallest pH evolution, so they should contain a relativ homogenous ameobae comunity.

The stampel with blood should be as dry as the one before but the blood should affect a bit the pH, so some communities evolution 'll be visible.(i 've not found any article with pH evolution of soil affected through blood.

The stampel with cow manure is a little more wet though the fact that the dung forms a waterproof layer and keeps more water under it. Through this we expect to see a acidification and the acidophilic amoebae species 'll increase, stutch as Arcella sp., Assulina muscorum, Corythion dubium, Difflugia lucida, Euglypha sp., Nebela collaris and Nebela tincta.

The last stampel, with the pig head should be the most affected with pH variation. The first two weeks it 'll icrease and reach a slitly basic stage and then went back to a normal level. This 'll affect the amoebae communities and allow basidophilic species to spread, stutch as: Centropyxis aerophila, Nebela bohemica and Nebela lageniformis. The humidité level is expected to be higher than the others stampels because of the influence of the cadaveric fluid, it is benefical for the reproduction but also makes the pH variation quicker.