DOI: 10.5061/dryad.x95x69pqs
title: Data from: Predator-driven behavioral shifts in a common lizard shape resource-flow from marine to terrestrial ecosystems

description: We conducted a field experiment to assess foraging niche dynamics of
 semiarboreal brown anole lizards in the presence/absence of predatory
 ground-dwelling curly tailed lizards in a replicated set of island
 ecosystems. Data used in this study includes ecological infomration for
 the replicated islands of study (i.e. relative arthropod and
 seaweedabundances) together with phenotypic data of the lizards studied
 (body mass, size, body condition, as well as behavioral traits describing
 risk-taking behavior) as well as habitat use data and marine component of
 diet as a surrogate of the diet of these lizards. One year after
 experimental translocation, brown anoles exposed to these predators
 increased perch height and reduced consumption of marine-derived food
 resources. We also use this dataset to investigate if this foraging niche
 shift altered marine-to-terrestrial resource-flow dynamics and persisted
 in the diets of the first-generation offspring. Finally, we also assessed
 if  lizards that displayed more risk-taking behaviors consumed
 more marine prey on islands with predators present.
description: All field data used in this study was collected in Abaco, Bahamas
 in 2016 and 2017. Tissue samples collected in the field
 in 2017 and analyzed in SIA facilities at UC Davis.
description: A detailed code in R is provided from which all analyses can be
 reproduded. 
description: # Predator-driven behavioral shifts in a common lizard shape resource-flow
 from marine to terrestrial ecosystems ## Author Information Corresponding
 author information: Name: Oriol Lapiedra Institution: CREAF Address:
 Edifici C, Universitat Autònoma de Barcelona, Spain Email:
 o.lapiedra(a)creaf.uab.cat ## Date of data collection 2016-2018 ##
 Geographic location of data collection Abaco island, The Bahamas ##
 Information about funding sources that supported the collection of the
 data ‘La Caixa’ Junior Leader position under A Marie Skłodowska-Curie
 grant agreement no. 847648. Fieldwork funded with: Putnam Expedition Grant
 from the Museum of Comparative Zoology and National Geographic Explorer
 Grant WW-148R-17. ## Abstract We conducted a field experiment to assess
 foraging niche dynamics of semiarboreal brown anole lizards in the
 presence/absence of predatory ground-dwelling curly tailed lizards in a
 replicated set of island ecosystems. Data used in this study includes
 ecological infomration for the replicated islands of study (i.e. relative
 arthropod and seaweedabundances) together with phenotypic data of the
 lizards studied (body mass, size, body condition, as well as behavioral
 traits describing risk-taking behavior) as well as habitat use data and
 marine component of diet as a surrogate of the diet of these lizards. One
 year after experimental translocation, brown anoles exposed to these
 predators increased perch height and reduced consumption of marine-derived
 food resources. We also use this dataset to investigate if this foraging
 niche shift altered marine-to-terrestrial resource-flow dynamics and
 persisted in the diets of the first-generation offspring. Finally, we also
 assessed if lizards that displayed more risk-taking behaviors consumed
 more marine prey on islands with predators present. ## Description of the
 data and file structure Data are provided in an Excel file containing
 different data sheets for each analysis in the paper. Indications on how
 to access each data sheet are indicated in the R code provided as an
 additional file. Specifically, the data sheets that are called for the
 analyses indicated correspond to data on Spider abundance, Seaweed
 abundance on the experimental islands, Diversity and abundance of
 arthropods, Habitat data and perch height, Body condition, data to
 estimate the Marine Component of diet. After this, all data are
 subsequently used to create all figures and Tables of the main text as
 well as those in the supplementary figures, as indicated, step by step, in
 the R code file. A more detailed description can be found below. ##
 Details for each dataset are provided in the README file. These datasets
 include: ### Spider abundance Number of active spider webs censused at the
 beginning of the field season. This dataset also includes predation
 regimes (Treatment), area of each island with vegetation (Vegetated area),
 as well as data on vegetation height, and web density taking into account
 vegetated area. ### Seaweed abundance on the experimental islands Island_X
 refers to the ID of the island. X1_dist is the minimum distance between
 random points distributed across the length of the island to deposited
 seaweed on the island (with a max distance of 200 cm). Finally, X1_sq is a
 measure of relative abundance of seaweed estimated as the number of 25cm X
 25cm squares containing seaweed out of 16. ### Diversity and abundance of
 arthropods Was obtained from arthropod collected using pitfall traps.
 Diversity as computed using Shannon’s diversity index to compare community
 composition between islands (data from Morales senior thesis, Morales
 (2018)). There is no datasheet for these data, that are directly manually
 introduced to the R file. As indicated above, these data were added
 manually to the R code. These data found in the R code can can be used can
 be published under CC0 license waiver required by Dryad. ### Habitat data
 and perch height This dataset includes ID of the animal, its Sex2, Type
 (branch, trunk, ground), Perch_Height and Diameter the lizard was found.
 Sun_Shade refers to whether animal was found in direct sun or not and
 Position in its perch. Island ID indicates which island Treatment refers
 to predation regime. Perch height and dimatere were measured in cm. ###
 Body condition This dataset contains data on the body mass and
 snout-vent-length (body size) of each individual that are used to obatin
 body conditoin extimates for each sex and predation regime
 (Treatment).Datasets 'xrays' and 'data.exp' contain
 the same information. The 'body condition' dataset also includes
 data on svl and body mass but this time indicating year to allow
 comparisons between years. SVL data is in every case indicated in mm and
 body mass in grams. ### Data to estimate the Marine Component of diet
 SIA_marine_diet dataset contains all the information for analyses of diet
 variation. Specifically, the variable 'd13C_marine_diet' refers
 to the marine component of diet as computed from delta C 13 raw data
 following the formulas S1 and S2 indicated in the supplementary material
 of this manuscript. This dataset also contains information on individual
 variation in risk-taking behavior ('time_on_ground_leiocFV')
 that was used to investigate the association between individual variation
 in diet and risk-taking, which was estimated for each sex and treatment
 and is given in minutes. In addition, this data sheet includes variables:
 Type of material refers to whether each row contains data from a tissue
 sample of an ANolis sagrei tail tissue or a Leiocephalus carinatus. data
 are filtered in the code to only include A. sagrei data. Dataset also
 includes: sex (male or female), Treatment (i.e. predation treatment),
 founder individual (whether each individual was translocated
 experimentally in 2016 or was born on the experimeental islands), Island
 ID (island in the experiment where the lizard was captured), and an
 individual ID for each individual. ### The dataset
 'bodymass_change16_17' was created to be able to compare body
 condition changes from 2016 to 2017 beterrn the different predation
 regimes (also used to crate Fig 2B). Across these datasets, missing data
 codes are indicated as 'NA' (data not available) Specialized
 formats or other abbreviations used: None ## Sharing/Access information
 Data is available in an Excel file containing different data sheets that
 correspond to Spider abundance, Seaweed abundance on the experimental
 islands, Diversity and abundance of arthropods, Habitat data and perch
 height, Body condition, data to estimate the Marine Component of diet. The
 code to execute the analyses is available in the R code file publicly
 available. 1. Licenses/restrictions placed on the data: CC0 1.0 Universal
 (CC0 1.0) Public Domain 2. Links to publications that cite or use the
 data: Lapiedra, O. et al. (2023). Predator-driven behavioral shifts in a
 common lizard shape resource-flow from marine to terrestrial ecosystems.
 Ecology Letters. 3. Links to other publicly accessible locations of the
 data: None 4. Links/relationships to ancillary data sets: None 5. Was data
 derived from another source? No A. If yes, list source(s): NA 6.
 Recommended citation for this dataset: Lapiedra, O. et al. (2023). Data
 from: Predator-driven behavioral shifts in a common lizard shape
 resource-flow from marine to terrestrial ecosystems. Ecology Letters.
 Dryad Digital Repository. DOI:10.5061/dryad.x95x69pqs. 3. Additional
 related data collected that was not included in the current data package:
 None 4. Are there multiple versions of the dataset? No A. If yes, name of
 file(s) that was updated: NA i. Why was the file updated? NA ii. When was
 the file updated? NA ## Code/Software R studio version Version 1.3.1093
 was used to generate this code in 2022. All R packages used in this study
 were updated in 2022. A detailed R script is available as supplementary
 material of the publication to reproduce all analyses of this article.