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sample_plot |
The sampling plots with different midge exclusion cages 18 in total. e = full exclusion cage m= partial exclusion cage (mock cage) c = control plot with no frame or mesh cage. The number represents the plot number. For example 1c represents the first plot which is a control plot. The following are all plots used in the experiment:1c 1e 1m 2c 2e 2m 3c 3e 3m 4c 4e 4m 5c 5e 5m 6c 6e and 6m. |
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exclusion_treatment |
The midge exclusion cage used in a particular sampling plot where e = full exclusion cage m= partial exclusion cage (mock cage) c = control plot with no frame or mesh cage. |
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rep |
replicate number |
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trap_setdate |
the date the infall trap was set or re-set at which point the trap started with zero midges |
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trap_collectdate |
the date the infall trap was emptied usually followed by being immediately re-set. |
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is_subsample |
whether or not an infall trap was subsampled when counted for the number of midges (by morphospecies). Based on the density of midges in an infall trap on a given collection date. Generally if there were hundreds to thousands of midges a subsample analysis was performed. y= yes a subsample was performed n= no a subsample was not performed. |
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tray_type |
The type of tray used in counting the midges. 3 types of trays were used: small large1 and large2. The areas are as follows: small = 731 square centimeters large1 = 1862.40 square centimeters large2 = 1247 square centimeters |
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sample_session |
the number of sampling sessions in a season as defined from trap set to collection. the first trap set date to the first trap collect date would have a sampling session = 1 the second trap set date to the second trap collect date would have a sampling session =2 and so forth. |
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subsamp_chiron |
if a subsample was performed the number of subsamples performed for the morphospecies chironomus |
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subsamp_tany |
if a subsample was performed the number of subsamples performed for the morphospecies Tanytarsus. |
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subsamp_simuliidae |
if a subsample was performed the number of subsamples peformed for arthropods only identified to the family level = Simuliidae |
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rawcount_chiron |
the number of Chironomus islandiucs counted in an infall trap. if a subsample was performed this is the total number of Chironomus counted from those subsamples. |
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rawcount_tany |
the number of Tanytarsus gracilentus counted in an infall trap. if a subsample was performed this is the total number of Tanytarsus counted from those subsamples. |
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rawcount_simuliidae |
the number of midges counted from an infall trap identified to the family level of Simuliidae. if a subsample was performed this is the total number of Simuliidae counted from those subsamples. |
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rawcount_others |
the number of arthropods not classified as Chironomus islandicus Tanytarsus gracilentus or Simullidae. |
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fracsub_chiron |
If a subsample was performed for Chironomus islandicus the fraction of the tray that was subsampled. Calculated as (subsamp_chiron * (ring area/ tray_type area)). |
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fracsub_tany |
If a subsample was performed for Tanytarsus gracilentus the fraction of the tray that was subsampled. Calculated as (subsamp_tany * (ring area/ tray_type area)). |
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fracsub_simuliidae |
If a sample was performed for midges identified only to the family level of Simuliidae the fraction of the tray that was subsampled. Calculated as (subsamp_simuliidae * (ring area/ tray_type area)). |
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count_chiron |
The total number of Chironomus islandicus in the tray accounting for subsampling. If subsampling was performed calculated as (rawcount_chiron/fracsub_chiron). |
dimensionless |
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count_tany |
The total number of Tanytarsus gracilentus in the tray accounting for subsampling. If subsampling was performed calculated as (rawcount_tany/fracsub_tany) |
dimensionless |
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count_simuliidae |
The total number of midges identified to the family level of Simuliidae in the tray accounting for subsampling. If subsampling was performed calculated as (rawcount_simuliidae/fracsub_simuliidae) |
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count_other |
The total number of other arthropods in the tray accounting for subsampling. |
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notes |
notes |
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midgeflag |
if the sample of midges collected from an infall trap for a particular sampling session is suspect a data flag represented as f is assigned. Data flags are typically assigned for rubber band failures and if part or all of a sample was lost. |
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