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.

1. Links to other publicly accessible locations of the data: None
2. Links/relationships to ancillary data sets: None
3. Was data derived from another source? No A. If yes, list source(s): NA
4. 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.

1. Additional related data collected that was not included in the current data package: None
2. 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.