Based on your experiments, what conditions would most likely allow two phytoplankton species competing for the same resources in a chemostat to coexist for extended periods of time?

They have the same R concentrations

Explanation:

Species with similar R may coexist in a chemotat for a very long period of time since similar R means both species take up resources and therefore grow on same rate.

Answer and Explanation:

As chemostat implies a response condition, in which the supplements (R fixation) are ceaselessly included and the left over supplements and metabolic final results are constantly evacuated. In such situation when the supplement focus for the two phytoplanktons will be same given that the supplements are consistently given, they will have the option to coincide.

Having same R fixation just methods they have same supplement necessities, and as they are constantly taken care of with supplements, there will no deterrent in their conjunction.