DOI: 10.5061/dryad.ncjsxkswc
title: Data from: Species-specific responses to warming alter community composition

description: 1. Species are responding to global climate change in varied and nuanced
 ways. However, how species-specific responses to climate change affect
 interactions among species remains poorly understood. It is important to
 understand species interactions under potential climate change scenarios
 because those interactions can in turn alter community dynamics. 2. In
 this study, we conducted two complementary experiments to examine how
 simulated warming might alter larval intraguild predation (IGP) rates and
 resulting adult assemblage composition in three species of North American
 dragonflies: Pachydiplax longipennis, Plathemis lydia, and Libellula
 luctuosa. 3. First, using both P. longipennis and L. luctuosa, we isolated
 inter- and intraspecific pairs of larval dragonflies of different size
 differentials to determine how size and species identity might influence
 IGP rates. 4. In tandem, we conducted a year-long mesocosm experiment with
 all three species to assess how simulated warming and heat waves
 influenced the resulting adult dragonfly assemblages. 5. IGP trials
 revealed that P. longipennis individuals were much more likely to engage
 in IGP than L. luctuosa, regardless of size differential. In the mesocosm
 experiment, emerging adult assemblages were dominated by P. longipennis
 individuals, a pattern that was most pronounced in the control treatment.
 6. Our results indicate that while P. longipennis may be the competitively
 dominant species under current ambient conditions, warming may alter this
 dynamic and lessen the dominance of this species on resulting assemblage
 composition.
description: README file for Data from
 "Species-specific responses to warming alter community
 composition" by Julia R. Tituskin, Shane M. Waddell, and Karen E.
 Mabry There are 5
 data files associated with this contribution. The file “TankTreatments.csv”
 includes information about the temperature treatments applied to
 experimental tanks. Column headings are defined
 as: Block:
 denotes the experimental block TankID: an identifier for
 individual experimental tanks Treatment: the temperature
 treatment as categorized in the paper - control, warmed, and
 variable Notes:
 includes information about which tanks/blocks were removed from
 statistical analysis due to heater malfunctions. To prevent confusion,
 data from these tanks were removed from all other uploaded data
 files.   The file “PlanktonCounts.csv”
 includes plankton abundance data from each experimental tank.
 Column headings are defined
 as: TankID: an
 identifier for individual experimental tanks Treatment: the temperature
 treatment as categorized in the paper - control, warmed, and
 variable Block:
 denotes the experimental block Ostracoda: abundance of
 ostracods Cladocera: abundance of
 cladocerans Copepoda: abundance of
 copepods Rotifera: abundance of
 rotifers   The file
 “DragonflyEmergence2020.csv” contains data on adult dragonflies emerging
 from experimental tanks. Column headings are defined
 as: Date: date of
 emergence in MM/DD/YYYY format Block: denotes the experimental
 block TankID: an
 identifier for individual experimental tanks Treatment: the temperature
 treatment as categorized in the paper - control, warmed, and
 variable Spp:
 species: “palo” = <i>Pachydiplax longipennis</i>, “plly” =
 <i>Plathemis lydia</i>, “Lilu” = <i>Libellula
 luctuosa</i> Indiv: a unique identifier for
 each individual Head width (mm): individual head
 width in mm Thorax (mm): individual thorax
 length in mm Forewing (cm): individual
 forewing length in cm Hindwing length (cm): individual
 hindwing length in cm Hindwing width (mm): individual
 hindwing width in mm Sex: individual sex: m = male, f
 = female Notes:
 any notes taken about the individual at the time of data
 collection   The file “survival_data2020.csv”
 contains data on the survival outcome of individuals in the mesocosm
 experiment. Column headings are defined
 as: Block:
 denotes the experimental block TankID: an identifier for
 individual experimental tanks Treatment: the temperature
 treatment as categorized in the paper - control, warmed, and
 variable Spp:
 species: “palo” = <i>Pachydiplax longipennis</i>, “plly” =
 <i>Plathemis lydia</i>, “Lilu” = <i>Libellula
 luctuosa</i> Surv: whether an individual
 survived: 1 = survived to emergence, 0 = did not survive to
 emergence   The file “IGPtrials2020.csv”
 contains data from the intraguild predation experiment. Column headings are defined
 as: PairID:
 unique identifier for a pair of larvae interacting within an experimental
 arena Block:
 denotes which of two experimental blocks, A or B, during which a pairing
 took place SppPair: species included in a
 pair-wise interaction: P = <i>Pachydiplax longipennis</i>, L =
 <i>Libellula luctuosa</i> Category: experimental pairing
 treatment:               PaloDiff = two
 Pachydiplax individuals, who differ in size               PaloSame = two
 Pachydiplax individuals, who are the same size               LiluDiff = two
 Libellula individuals, who differ in size               LiluSame = two
 Libellula individuals, who are the same size               PaloLgr = a
 Pachydiplax and a Libellula, Pachydiplax is larger               LiluLgr = a
 Pachydiplax and a Libellula, Lilbellula is larger               PLSame = a
 Pachydiplax and a Libellula, they are the same size Ind1ID: individual identifier for
 first member of the pair Ind2ID: individual identified for
 the second member of the pair 1HeadWidth(mm): head width of
 individual 1 in mm 2HeadWidth(mm): head width of
 individual 2 in mm Difference(mm): head width
 differential between individuals 1 and 2 Consumed: which individual (if
 any) was killed/eaten, I1 = individual 1, I2 = individual 2, none =
 neither were consumed (there was no IGP) Notes: any notes about the
 interaction recorded at the time of the experiment