Some water samples have quite a low biodiversity. There are sometimes only a few dominant species. In this video, I want to explore, why this might be the case.
Some white blood cells (the polymorphnuclear granulocytes) have a lobed and irregularly shaped nucleus in them. I show you here a simple staining reaction, which allows you to see this.
I show you a salt lake and put salt crystals under the microscope. The lake is pink because of microorganisms that live in the salt water.
I visited the southern parts of France (Camarque region) during my holidays and caught a mosquito there. I put it under the microscope.
In this video, I put several water plants from a river under the microscope. There is a biofilm growing on them, which can be seen with a microscope.
With the help of a microscope, we can determine the volume of a grain of sand to determine how many sand grains there are.
Here is a safe source of bacteria, which you can put under the microscope.
The ciliate Euplotes died and popped open right under the microscope. I think that some soap on the microscope slide could be responsible for that.
In this video you will see water melon cells, bacteria growing on a water melon, pollen of the water melon and xylem tissue, which transports water.
I had problems finding algae for microscopy in the lake I visited. Here is a suggestion on what to do in this case.