Data and R code for: Biogeography and conservation of bycatch decapods

Aim To investigate the spatial patterns of species richness (SR), phylogenetic diversity (PD), and phylogenetic endemism (PE) in bycatch decapod crustaceans along the Brazilian Exclusive Economic Zone and to assess the influence of environmental variables and trawling effort on these diversity indices.
Location Brazilian Exclusive Economic Zone.
Taxa Decapoda
Results Decapod diversity showed strong spatial heterogeneity across the EEZ. SR peaked in southeastern Brazil in upwelling-influenced ecotones, while PD and PE were highest in offshore and equatorial regions. PD was strongly associated with bottom temperature, primary productivity (PP) and current velocity, SR was mainly driven by salinity, light availability, and PP, and PE was best explained by temperature and PP. Most hotspots of phylogenetic diversity and endemism fell outside Marine Protected Areas (MPAs), revealing significant conservation gaps in offshore and southern regions.
Main conclusions This study provides the first ..., We compiled bycatch occurrence data from peer-reviewed studies and global biodiversity repositories. Diversity indices (SR, PD, PE, ED and WE) were estimated using a phylogenetic approach incorporating mitogenomic markers. Environmental and trawling effort data were extracted from global databases, and statistical analyses, including redundancy analysis (RDA), spatial regression and random forest models, were applied to determine the drivers of diversity.
, , # Dataset: Data, phylogenies, and R workflows for analyzing species richness, phylogenetic diversity, and conservation gaps of bycatch decapod crustaceans in the Brazilian Exclusive Economic Zone (EEZ)

This repository contains occurrence records, environmental predictors, phylogenetic trees, biodiversity indices, spatial layers, and R scripts used in the study:

**“Decapod Biodiversity Hotspots and Environmental Drivers: A Macroecological Approach About Bycatch Species in Brazil”**
Journal of Biogeography
[https://doi.org/10.1111/jbi.70076](https://doi.org/10.1111/jbi.70076)

All files are described below to ensure independent interpretation and reuse without consulting the manuscript.

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## File inventory and description

### CCDB_OBIS_GeoMar_data.csv

This file contains raw occurrence records of decapod crustaceans compiled from multiple sources, including:

* Crustacean Collection Database (CCDB)
* Ocean Biodiversity Information System (OBIS)
* GEOMAR Helmholtz Centre for Ocean R...,