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ColumnLabelTypeDefinition
sample_plotmidge sampling plotNominalThe 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.
exclusion_treatmentmidge exclusion treatmentNominalThe 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.
repreplicate numberNominalreplicate number
trap_setdatemidge trap set dateDate/timethe date the infall trap was set or re-set, at which point the trap started with zero midges
trap_collectdatemidge trap collect dateDate/timethe date the infall trap was emptied, usually followed by being immediately re-set.
is_subsamplesubsample analysis for midgesNominalwhether 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.
tray_typemidge tray typeNominalThe 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
sample_sessionmidge sampling sessionNominalthe 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.
subsamp_chironnumber of subsamples for ChironomusNominalif a subsample was performed, the number of subsamples performed for the morphospecies chironomus
subsamp_tanynumber of subsamples for TanytarsusNominalif a subsample was performed, the number of subsamples performed for the morphospecies Tanytarsus.
subsamp_simuliidaenumber of subsamples for SimuliidaeNominalif a subsample was performed, the number of subsamples peformed for arthropods only identified to the family level = Simuliidae
rawcount_chironraw count of Chironomus islandicusNominalthe 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.
rawcount_tanyraw count of Tanytarsus gracilentusNominalthe 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.
rawcount_simuliidaeraw count of SimuliidaeNominalthe 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.
rawcount_others raw count of other arthropodsNominalthe number of arthropods not classified as Chironomus islandicus, Tanytarsus gracilentus, or Simullidae.
fracsub_chironChironomus islandicus fraction subsampledNominalIf a subsample was performed for Chironomus islandicus the fraction of the tray that was subsampled. Calculated as (subsamp_chiron * (ring area/ tray_type area)).
fracsub_tanyTanytarsus gracilentus fraction subsampledNominalIf a subsample was performed for Tanytarsus gracilentus the fraction of the tray that was subsampled. Calculated as (subsamp_tany * (ring area/ tray_type area)).
fracsub_simuliidaeSimuliidae fraction subsampledNominalIf 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)).
count_chironcount of Chironomus islandicus accounting for subsamplingPhysical quantityThe total number of Chironomus islandicus in the tray accounting for subsampling. If subsampling was performed calculated as (rawcount_chiron/fracsub_chiron).
count_tanycount of Tanytarsus gracilentus accounting for subsamplingPhysical quantityThe total number of Tanytarsus gracilentus in the tray accounting for subsampling. If subsampling was performed calculated as (rawcount_tany/fracsub_tany)
count_simuliidaecount of Simuliidae accounting for subsamplingNominalThe 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)
count_othercount of other arthropods accounting for subsamplingNominalThe total number of other arthropods in the tray, accounting for subsampling.
notesnotesNominalnotes
midgeflagdata flag for midge infall trapNominalif 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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ColumnFilter
trap_setdate