Tropical niche conservatism and dispersal limitation jointly determine taxonomic and phylogenetic β-diversities of Odonata in Eastern China

Aim:
AQ4Tropical niche conservatism (TNC) and dispersal limitation (DL) are major ecological and evolutionary mechanisms in shaping taxonomic and phylogenetic β‐diversities. While these mechanisms have been studied in plants and vertebrates, their roles in freshwater taxa remain unclear. We leveraged Odonata species distribution and phylogenetic data to map geographical patterns of taxonomic and phylogenetic β‐diversities, and to determine whether Odonata β‐diversity is primarily shaped by TNC or DL and whether temperature seasonality is a key driver determining TNC.

Location: Eastern China
 

Time Period: Present
 

Major Taxa Studied: Odonata
 

Methods
A moving window containing nine grids of 50 × 50 km was employed to quantify taxonomic and phylogenetic β‐diversities, including their turnover and nestedness components. A null model was utilised to calculate randomly expected phylogenetic β‐diversity based on observed taxonomic β‐diversity and si..., , , # Tropical niche conservatism and dispersal limitation jointly determine taxonomic and phylogenetic β-diversities of Odonata in eastern China

Tropical niche conservatism and dispersal limitation jointly determine taxonomic and phylogenetic β-diversities of Odonata in Eastern China
Zhenyuan Liu1,2, Bo-Ping Han1, *, Janne Soininen2

## Description of the data and file structure

1) We include two datasets that used to statistical analysis:
Odonata_raw_bio_data: includes Odonata presence/absence data of 891 grid cells were used to calculate taxonomic and phylogenetic β-diversities.

Odonata_raw_env_data: include 10 environmental variables of 891 grid cells. See below:

Human: the human modification index, range from 0 to 1, with higher values indicating stronger human pressures.
Ele_Range: the elevation difference between the maximum and minimum values within each grid cell (m).
LGM_Bio1: the difference between the temperature of Last Glacial Maximum (LGM, ~21 Ka) and present- day value...,