Daphnia Daphnia has only one main purpose in the ecosystem. It is basically fish food, mainly because they reproduce very quickly and are usually very abundant. This is because they produce most of their young without having to mate. They take about three days to produce their pouch of eggs. It takes about six days for one female to produce about thirteen billon offspring. However, when the eggs are fertilized, they can take up to …showed first 75 words of 1210 total…

…showed last 75 words of 1210 total…to do with Green Lake's ecosystem. This is shown by when it got colder, we found less things at the surface of the mud. This is probably because the worms and other things crawl lower into the mud to get to warmer places, Also, the zooplankton count went lower as it got colder, this is probabaly because they either died, or went to the deeper areas of the lake where living conditions were mose suitable.