Algae and macroinvertebrate communities respond to the dissolved oxygen and salinity levels of the water. Dissolved oxygen is required by the macroinvertebrates for respiration. Salinity impacts the algae because every algae has a specific salinity range that they are able to survive in. THis research was presented at the UCSB 2023 EEMB research symposium and at the UCSB 2023 URCA symposium.