DOI: 10.5061/dryad.1zcrjdg01
title: Data from: The role of fish predators and their foraging traits in shaping zooplankton community structure

description: Differentiation of foraging traits among predator populations may help
 explain observed variation in the structure of prey communities. However,
 few studies have investigated the phenotypic effects of predators on their
 prey in natural communities. Here, we use a comparative analysis of 78
 Greenlandic lakes to examine how foraging trait variation among threespine
 stickleback populations can help explain variation in zooplankton
 community composition among lakes. We find that landscape-scale variation
 in zooplankton composition was jointly explained by lake properties, such
 as size and water chemistry, and the presence and absence of both
 stickleback and arctic char. Additional variation in zooplankton community
 structure can be explained by stickleback jaw protrusion, a trait with
 known utility for foraging on zooplankton, but only in lakes where
 stickleback co-occur with arctic char. Overall, our results illustrate how
 trait variation of consumers, alongside other ecosystem properties, can
 influence the composition of prey communities in nature.
description: # Data from: The role of fish predators and their foraging traits in
 shaping zooplankton community structure
 The dataset
 "ELE_00721_2023_Lake_data.csv" contains the data of 78
 Greenlandic lakes, including their coordinate positions, lake morphometry
 measurements, fish community composition, physio-chemical chemical
 parameters obtained with EXO multiparameter sonde, stickelback denisty,
 the abundance of zooplankton speices and the mean phenotypic traits of the
 stickelback populations. This dataset was analysed with the R-script
 "ELE_00721_2023_Lake_data_Lake_analysis.R" ## Description of the
 data and file structure The file "ELE_00721_2023_Lake_data.csv"
 contains the follwing collumns: | Lake ID: | A unique identifier for the
 lake | | ------------------- |
 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Sampling\_Year: | The year, in which the lakes were sampled. | | Sampling\_Area:  | The three major sampling regions in Greenland: A = Akia, T = Tuttutoq, M = Mainland (Qassiarsuk) | | Latitude:  | Latitude of the lake’s location | | Longitude:  | Longitude of the lakes’s location | | Fish\_community:  | Fish community configuration: 1\_NF = No Fish, 2\_C = Char only, 3\_SBC = Stickleback and Char, 4\_SB = Stickleback only | | SB\_presence | The presence of stickleback: 1 = present, 0 = absent. | | Char\_presence | The presence of arctic char: 1 = present, 0 = absent. | | Area\_ha:  | Lake surface area in hectare. | | Perimeter\_m:  | Lake perimeter in meters. | | Max\_Depth\_m:  | Maximal depth of the lake measured in meters | | EXO\_Chlorophyll: | Chlorophyll-a in relative fluorescence units (RFU) obtained using the EXO2 modular sensor platform \[YSI-WTW]; mean value between 0-3m depth. | | EXO\_BGA: | Blue-Green-Algae measure in relative fluorescence units (RFU) obtained using the EXO2 modular sensor platform \[YSI-WTW]; mean value between 0-3m depth. | | EXO\_Conductivity: | Water conductivity measured in μS × cm−1, obtained using the EXO2 modular sensor platform \[YSI-WTW]; mean value between 0-3m depth. | | EXO\_ODO | Oxygen concentration in mg/L, obtained using the EXO2 modular sensor platform \[YSI-WTW]; mean value between 0-3m depth. | | EXO\_fDOM | Fluorescent Dissolved Organic Matter (fDOM) in relative fluorescence units (RFU) obtained using the EXO2 modular sensor platform \[YSI-WTW]; mean between 0-3m depth. | | EXO\_Temp | Water temperature in °C, obtained using the EXO2 modular sensor platform \[YSI-WTW]; mean between 0-3m depth. | | CPUE | Catch per unit effort (CPUE) of the stickleback populations in individuals caught/hours of trapping. NA (not applicable) for lakes that did not contain stickleback populations. | | ab\_Calanoida | The abundance in individuals per liter of the calanoid copepod Leptodiaptomus minutus.   | | ab\_Cyclopoida | The abundance in individuals per liter of the cyclopoid copepods. | | ab\_Polyphemus | The abundance in individuals per liter of the Polyphemus sp. | | ab\_Macrothrix | The abundance in individuals per liter of Macrothrix sp. | | ab\_Holopedium | The abundance in individuals per liter of Holopedium sp. | | ab\_Bosmina | The abundance in individuals per liter of Bosmina sp. | | Ab\_Daphnia\_long | The abundance in individuals per liter of Daphnia longispina. | | Ab\_Daphnia\_pul | The abundance in individuals per liter of Daphnia pulex | | Ab Ceriodaphnia | The abundance in individuals per liter of Ceriodaphnia sp. | | Ab\_Chydoridae\_sum | The abundance of individuals per liter of the family chydoridae (the sum of Acropercus, Alona, Chydorus, Eurycercus, and undefined chydoridae) | | ab\_Acroperus | The abundance in individuals per liter of Acropercus sp. | | Ab\_Alona | The abundance in individuals per liter of Alona sp. | | ab\_Chydorus | The abundance in individuals per liter of Chydorus sp. | | ab\_Eurycercus | The abundance in individuals per liter of Eurycercus sp. | | Ab\_Chydoridae | The abundance in individuals per liter of chydoridae that where not identified beyond family level. | | SL | Mean standard length of stickleback population in the respective lake in millimeter. NA (not applicable) for lakes that did not contain stickleback populations. | | KT | Mean kinematic transmission of the opercular four-bar linkage of the stickleback in the respective lake (KT; unitless). NA (not applicable) for lakes that did not contain stickleback populations. | | SI | Mean suction index of the stickleback population in the respective lake (SI; unitless). NA (not applicable) for lakes that did not contain stickleback populations. | | DA | Mean displacement advantage of the lower jaw lever ratio of the stickleback population in the respective lake (DA: unitless). NA (not applicable) for lakes that did not contain stickleback populations. | | JP | Mean jaw protrusion of the stickleback population in the respective lake (JP; in millimeter). NA (not applicable) for lakes that did not contain stickleback populations. | ## Code/Software The data lake data in the file "ELE_00721_2023_Lake_data.csv" where analysed using the R-script "ELE_00721_2023_Lake_data_Lake_analysis.R" in R studio which is available under .