Plankton analysis "vertical migration"
Hi , 😃
I´m an German student and researching plankton at the "starnberger" lake for a school project.
The main focus is on the vertical migration of plankton at the sunset.
I fished the plankton every hour from 2h before until 2h after the sunset.
Afterwards i analysed it with a mikroskope and classified the amount of Phytoplankton, Daphnia and copepods.
for more accuracy i did this 3 times and summarized it. then I had the frequency levels from 0-9.
Thats how the results look like:
Probe 1 - 20.09.2016 - every hour
Probe 2 - 24.09.2016 - every hour
Probe 3 - 29.09.2016 - half-hour
Probe 4 - 07.10.2016 - every hour
Probe 5 - 30.10.2016 - every hour
The graphs have interesting similarities.
The biggest question i have at the moment is : why has Phytoplankton a low 1h after sunset and copepods during the sunset?
Thanks in advance,
by yshish moderator, translator
It is quite an interesting school project you're working on.
I am sorry I can't answer your question. But I'll ask our scientists whether some of them could be helpful here.
by jo.irisson translator, scientist
That is a nice project indeed. To interpret the plot I would need to know:
which depth did you collect the plankton at? If you want to look at vertical migration you usually collect plankton at several depths.
what is the unit of the values on your plots? Also, you mention they result from averaging over 3 times, what are those "3 times"?