README/Metadata for Little et al. “Dispersal syndromes can impact ecosystem functioning in spatially structured freshwater populations”

This manuscript’s analyses use four data files, uploaded with the following names:
•	Suppdata1_G_fossarum_dispnet_bodyweights, referred to in the code as G_fossarum_dispnet_bodyweights,
•	Suppdata2_GF_weight_and_survival, referred to in the code as GF_weight_and_survival_data_corrected
•	Suppdata3_DV_weight_and_survival, referred to in the code as DV_weight_and_survival_data
•	Suppdata4_D_villosus_dispnet_bodyweights, referred to in the code as D_villosus_dispnet_bodyweights

Code required to do the analysis and produce figures for this paper are available on GitHub at https://github.com/chelseajlittle/DispNetConsumption

The following provides information about the variables in each data file.

Suppdata1_G_fossarum_dispnet_bodyweights

Each row of this dataset represents one individual amphipod which was weighed. “Post-dispersal” individuals (see notes column) were residents from the dispersal experiment, from two-patch setups where no individuals dispersed. In these cases, three residents were collected directly after the dispersal experiment because they were not used in the feeding experiment.

label_on_ind: The label that was in the vial with the dried amphipod (for example, “2-Disperser”).
Mesocosm_ID: The number ID of the mesocosm used in the experiment.
Res_or_Disp: Whether the amphipod was a resident or a disperser (referred to in the manuscript as “dispersal status” or “dispersal type”).
Treatment: The experimental condition in the original dispersal experiment. Codes: CTR-CTR means leaves were offered as food and there were no predator cues; FISH-CTR means that leaves were offered as food and there were predator cues; CTR-LOW means that no leaves were offered as food in the origin patch, and there were no predator cues; and FISH-LOW means that no leaves were offered as food in the origin patch, and there were predator cues as well.
Mass_g: The dry mass of the individual amphipod.
Note: Whether the individual was weighed after the dispersal experiment (“post-dispersal”) or after the consumption experiment, 19 days after the conclusion of the dispersal experiment (“post-feeding-experiment”)

Suppdata2_GF_weight_and_survival

Each row of this data file represents one mesocosm.

Mesocosm: The numeric ID of the mesocosm
Treatment: Whether the amphipod was a resident or a disperser
Mass_before: The (dry) mass of alder leaves provisioned to the mesocosm at the beginning of the experiment.
Mass_after: The (dry) mass of alder leaves at the conclusion of the experiment.
Mass_lost_g: The difference in mass of leaves from the beginning to end of the experiment (difference of previous two columns)
Alive_11_Nov: Number of amphipods provisioned to the mesocosms at the beginning of the experiment.
Total_After_Additions_11_Nov: Number of amphipods added after the initial distribution to mesocosms (zero in all cases – this was a check)
Alive_14_Nov: Number of surviving amphipods on November 14
Total_After_Additions_14_Nov: Number of amphipods added due to mortality (zero in all cases – this was a check)
Alive_16_Nov: Number of surviving amphipods on November 16
Alive_18_Nov: Number of surviving amphipods on November 18
Alive_21_Nov: Number of surviving amphipods on November 21
Alive_23_Nov: Number of surviving amphipods on November 23
Alive_25_Nov: Number of surviving amphipods on November 25
Final_Alive_28_Nov: Number of surviving amphipods on November 28, when the experiment was stopped, for mesocosms which were counted on the same day; for some mesocosms, the counts were performed on the next day, because there was not enough time to do all counts.
Final_Dead_28_Nov: Number of amphipods dead but still present in the mesocosms on November 28, for those mesocosms which were counted that day.
Final_Alive_29_Nov: Number of surviving amphipods on November 29, for mesocosms which were not counted the previous day when the experiment was stopped.
Final_Dead_29_Nov: Number of amphipods dead but still present in the mesocosms on November 29, for those mesocosms which were counted that day.
Amphipod_Days: The calculated total number of individual-days the mesocosm experienced, based on the preceding survival data
Mass_loss_per_amphipod_per_day_mg: The mass loss of leaves in the mesocosm divided by the number of amphipod days

Suppdata3_DV_weight_and_survival

Each row of this data file represents one mesocosm.

Mesocosm: The numeric ID of the mesocosm
Treatment: Whether the amphipod was a resident or a disperser
Mass_before: The (dry) mass of alder leaves provisioned to the mesocosm at the beginning of the experiment.
Mass_after: The (dry) mass of alder leaves at the conclusion of the experiment.
Mass_lost_g: The difference in mass of leaves from the beginning to end of the experiment (difference of previous two columns)
Start_Alive_26_Jan: Number of amphipods provisioned to the mesocosms at the beginning of the experiment.
Alive_30_Jan: Number of surviving amphipods on January 30
Alive_1_Feb: Number of surviving amphipods on February 1
Alive_3_Feb: Number of surviving amphipods on February 3
Alive_6_Feb: Number of surviving amphipods on February 6
Final_Alive_8_Feb: Number of surviving amphipods at the conclusion of the experiment on February 8
Final_Dead_8_Feb: Number of amphipods dead but still present in the mesocosms on the final day of the experiment, February 8
Amphipod_Days: The calculated total number of individual-days the mesocosm experienced, based on the preceding survival data
Mass_loss_per_amphipod_per_day_mg: The mass loss of leaves in the mesocosm divided by the number of amphipod days


Suppdata4_D_villosus_dispnet_bodyweights

Each row of this dataset represents one individual amphipod which was weighed. “Post-dispersal” individuals (see notes column) were residents from the dispersal experiment, from two-patch setups where no individuals dispersed. In these cases, three residents were collected directly after the dispersal experiment because they were not used in the feeding experiment.

label_on_ind: The label that was in the vial with the dried amphipod (for example, “2-Disperser”).
Mesocosm_ID: The number ID of the mesocosm used in the experiment.
Res_or_Disp: Whether the amphipod was a resident or a disperser (referred to in the manuscript as “dispersal status” or “dispersal type”).
Treatment: The experimental condition in the original dispersal experiment. Codes: CTR-CTR means leaves were offered as food and there were no predator cues; FISH-CTR means that leaves were offered as food and there were predator cues; CTR-LOW means that no leaves were offered as food in the origin patch, and there were no predator cues; and FISH-LOW means that no leaves were offered as food in the origin patch, and there were predator cues as well.
Mass_g: The dry mass of the individual amphipod.
Note: Whether the individual was weighed after the dispersal experiment (“post-dispersal”) or after the consumption experiment, 12 days after the conclusion of the dispersal experiment (“post-feeding-experiment”)

