Occurrences of annual killifish (Rivulidae) in different bioregionalizations across the Neotropical domain

Aim
Bioregionalization frameworks represent unique assemblages of species resulting from geographic isolation and environmental heterogeneity. Understanding how different bioregionalizations capture community compositional variation is crucial, as underlying patterns and processes are scale-dependent. This study aims to (1) explore the underlying ecological processes through the decomposition of beta diversity (turnover and nestedness); (2) identify which bioregionalization framework offers the optimal spatial granularity for distinguishing between communities; and (3) evaluate the effective number of compositionally distinct areas.
Location
Neotropical domain
Taxon
Rivulidae - annual species
Methods
Presence-absence data of fish species were analyzed using pairwise β-diversity and hierarchical clustering methods (UPGMA) and compared with 14 comprehensive bioregionalization frameworks, including terrestrial ecoregions (TEOW), freshwater ecoregions (FEOW), Neotropical provinces, and wate..., Occurrence data
Occurrence records of annual killifish (Rivulidae: Cyprinodontiformes) were exhaustively compiled between January 2021 and September 2023 from various sources, including articles, books, and public digital repositories that aggregate information from collections/museums, such as the Global Biodiversity Information Facility (GBIF, gbif.org), Brazilian Biodiversity Information System (SIBBR, sibbr.gov.br), SpeciesLink (splink.org.br), and Biodiversity Extinction Risk Assessment System (SALVE, salve.icmbio.gov.br). To include occurrences in our database, we applied the following filters: (i) only records identified at the species level (sp., cf. or aff. excluded) and (ii) geographic coordinates consistent with distribution information available in the literature. Species distributions were validated by plotting individual species maps and comparing them with those published in the primary taxonomic literature. For species with unavailable/unknown geographic coordinates, we ..., , # Occurrences of annual killifish (Cyprinodontiformes: Rivulidae) in different bioregionalizations across the Neotropical domain

[https://doi.org/10.5061/dryad.zpc866tjz](https://doi.org/10.5061/dryad.zpc866tjz)

## Description of the data and file structure

## Submitted Files

* **Metadata.xlsx**: Contains occurrence data for annual killifish species across various bioregionalizations in the Neotropical domain.
* **BL2-12.txt**: Includes species presence or absence data across different bioregionalization schemes.
* **Appendix S2 - R scripts.R**: R script used for data processing and analysis.

## Data Descriptions

### **Metadata.xlsx**

* **Order**: Taxonomic order of the species.
* **Family**: Taxonomic family of the species.
* **Genus**: Taxonomic genus of the species.
* **Species (original name)**: Species name according to the consulted source.
* **Species (updated name)**: Species name updated according to [Eschmeyer's Catalog of Fishes](https://researcharchive.calacademy.org...