Metadata: Algae_data Algae data from the mesocosm experiment -Tank: number of each mesocosm -Snail_density: number of snails (Potamopyrgus antipodarum) in each mesocosm at the beginning of the experiment -Time: Hours since the start of the experiment when each measurement was taken -Green: amount of green algae on a tile Final_stream_mesocosm Data from final Invertebrates remaining at the end of the in-stream and mesocosm experiments -Location: Experiment (either mesocosm or stream) -Size: size (m2) of the mesocosms or stream rock basket -Site: number of each mesocosm or stream rock basket -Start_density: the estimated number of snails (Potamopyrgus antipodarum) in each mesocosm or stream rock basket at the beginning of the experiment -Actual_start_density: the actual number of snails (Potamopyrgus antipodarum) in each mesocosm or stream rock basket at the beginning of the experiment -snail_final: the final number of snails (Potamopyrgus antipodarum) in each mesocosm or stream rock basket -Austroclima: number of Austroclima spp. in each mesocosm or stream rock basket at the beginning of the experiment -Deleatidium: number of Deleatidium spp. in each mesocosm or stream rock basket at the beginning of the experiment -Coloburiscus: number of Coloburiscus humeralis in each mesocosm or stream rock basket at the beginning of the experiment -Nesameletus: number of Nesameletus ornatus in each mesocosm or stream rock basket at the beginning of the experiment -Zelandobius: number of Zelandoperla fenestrata in each mesocosm or stream rock basket at the beginning of the experiment -Hydrobiosis: number of Hydrobiosis spp. in each mesocosm or stream rock basket at the beginning of the experiment -Aoteapsyche: number of Aoteapsyche spp. in each mesocosm or stream rock basket at the beginning of the experiment -Pycenotrodes: number of Pycnocentrodes spp. in each mesocosm or stream rock basket at the beginning of the experiment -Pycnocentria: number of Pycocentria spp. in each mesocosm or stream rock basket at the beginning of the experiment -Beraeoptera: number of Baraeoptera spp. in each mesocosm or stream rock basket at the beginning of the experiment -Olinga: number of Olinga feredayi in each mesocosm or stream rock basket at the beginning of the experiment -Hudsonema: number of Hudsonema spp. in each mesocosm or stream rock basket at the beginning of the experiment -Oxyethira: number of Oxythira spp. in each mesocosm or stream rock basket at the beginning of the experiment Over_time Drift data from the mesocosm experiment over time -Tank: number of each mesocosm -Treatment: categorical grouping for the number of snails (Potamopyrgus antipodarum) in each mesocosm at the beginning of the experiment -Snail_density: the actual number of snails (Potamopyrgus antipodarum) in each mesocosm or stream rock basket at the beginning of the experiment -Time_of_day: time during which the drift sample net was filled (day or night) -Time: hours since the start of the experiment when each measurement was taken -drift_col: number of Coloburiscus humeralis that had drifted out of the system at that point in time -drift_del: number of Deleatidium spp. that had drifted out of the system at that point in time -drift_nes: number of Nesameletus ornatus that had drifted out of the system at that point in time -drift_zel: number of Zelandoperla fenestrata that had drifted out of the system at that point in time -drift_cc: number of caddisflies that had drifted out of the system at that point in time -col_input: number of Coloburiscus humeralis that were added into of the system at that point in time (only were only added during the day, but the number was repeated in the night row for merging purposes in R) -del_input: number of Deleatidium spp. that were added into of the system at that point in time -nes_input: number of Nesameletus ornatus that were added into of the system at that point in time -cc_input: number of caddisflies that were added into of the system at that point in time -zel_input: number of Zelandoperla fenestrata that were added into of the system at that point in time