DOI: 10.5061/dryad.rjdfn2zhv
title: Temporal variations of the multifaceted biodiversity and assembly mechanisms in lake fish assemblages

description: Understanding long-term changes of fish diversity and community assembly
 rules is crucial for freshwater conservation. Growing evidence indicates
 that studying functional and phylogenetic diversity beyond purely
 taxonomic considerations can provide different but complementary
 information on community assembly. Here, the taxonomic, functional and
 phylogenetic β-diversity of fish communities, as well as the community
 assembly mechanisms were explored in five impounded lakes of the China’s
 South-to-North Water Diversion Project (SNWDP) from the 1980s to the
 2010s. We found that: 1) there was an obvious trend of species
 homogenization in the five impounded lakes, but the long-term
 transformations of different dimensional β-diversities were divergent; 2)
 water quality and land use variables have greater impacts in
 multi-dimensional β-diversity; and, 3) community assembly process in
 taxonomic and functional dimensions were dominated by random process in
 both periods, while shifted from limiting similarity to habitat filtering
 in the phylogenetic dimension. These results highlight that functional and
 phylogenetic diversity are important additional ecological indices for
 assessing patterns of fish diversity in lakes.
description: GENERAL INFORMATION 1. Title of Dataset: Temporal variations of the
 multifaceted biodiversity and assembly mechanisms in lake fish assemblages
 2. Author Information A. Principal Investigator Contact Information Name:
 Zhice Liang Institution: Institute of Hydrobiology Address: Wuhan, China
 Email: B. Associate or Co-investigator
 Contact Information Name: Chuanbo Guo Institution: Institute of
 Hydrobiology Address: Wuhan, China Email: 3. Date
 of data collection (single date, range, approximate date): 1980-1989,
 2010-2019 4. Geographic location of data collection: Five impounded lakes
 of the China’s South-to-North Water Diversion Project 5. Information about
 funding sources that supported the collection of the data: National
 Natural Science Foundation of China, Award: 32172980; the earmarked fund
 for CARS-45; Chinese Academy of Sciences, Award: E329020401 SHARING/ACCESS
 INFORMATION 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: Liang, Z. C., Guo, C. B., et al. (2023). Temporal variations of the
 multifaceted biodiversity and assembly mechanisms in lake fish
 assemblages. Ecosphere. 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 If yes, list source(s): NA 6.
 Recommended citation for this dataset: Liang, Z. C., Guo, C. B., et al.
 (2023). Data from: Temporal variations of the multifaceted biodiversity
 and assembly mechanisms in lake fish assemblages. Dryad Digital
 Repository. DATA &
 FILE OVERVIEW 1. File List: A) Table S1: Species list in the five
 impounded lakes during the historical (1980s) and the current (2010s)
 periods. B) Table S2: Environment Variables in the five impounded lakes
 during the historical (1980s) and the current (2010s) periods. C) Table
 S3: Taxonomic, functional and phylogenetic β-diversity indices. D) Table
 S4: Standardized effect values for taxonomic, functional and phylogenetic
 β-diversity indices. E) Fasta S1: Comparative sequences of the
 mitochondrial COI gene (cytochrome c oxidase subunit Ⅰ) for each
 identified fish species. 1. Relationship between files, if important: None
 2. Additional related data collected that was not included in the current
 data package: None 3. 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
 \#########################################################################
 DATA-SPECIFIC INFORMATION FOR: Table S1: Species list in the five
 impounded lakes during the historical (1980s) and the current (2010s)
 periods. 1. Number of variables: 5 2. Number of cases/rows: 105 3.
 Variable List: * GYL: Gaoyou Lake * HZL: Hongze Lake * LML: Luoma Lake *
 NSL: Nansi Lake * DPL: Dongping Lake 4. Missing data codes: None 5.
 Specialized formats or other abbreviations used: None
 \#########################################################################
 DATA-SPECIFIC INFORMATION FOR: Table S2: Environment Variables in the five
 impounded lakes during the historical (1980s) and the current (2010s)
 periods. 1. Number of variables: 10 2. Number of cases/rows: 11 3.
 Variable List: * Area: Lake area, km2 * WD: Water depth, m * TN: Total
 nitrogen, mg/L * TP: Total phosphorus, mg/L * DO: Dissolved oxygen
 concentration, mg/L * COD: Chemical oxygen demand, mg/L * AMT: Mean annual
 temperature, ºC * AMP: Mean annual precipitation, mm * CA: Canal areas,
 km2 * AA: Aquaculture areas, km2 4. Missing data codes: None 5.
 Specialized formats or other abbreviations used: None
 \#########################################################################
 DATA-SPECIFIC INFORMATION FOR: Table S3: Taxonomic, functional and
 phylogenetic β-diversity indices. 1. Number of variables: 6 2. Number of
 cases/rows: 21 3. Variable List: * Periods: 1980s or 2010s * TD: Sorensen
 multi-site dissimilarity indices * FD_Dpw: The mean pairwise functional
 distance between two communities * FD_Dnn: The nearest neighbor trait
 distance between two communities * PD_Dpw: The mean pairwise phylogenetic
 distance between two communities * PD_Dnn: The nearest neighbor
 phylogenetic distance between two communities 4. Missing data codes: None
 5. Specialized formats or other abbreviations used: None
 \#########################################################################
 DATA-SPECIFIC INFORMATION FOR: Table S4: Standardized effect values for
 taxonomic, functional and phylogenetic β-diversity indices. 1. Number of
 variables: 4 2. Number of cases/rows: 21 3. Variable List: * Periods:
 1980s or 2010s * SES.TD: Standardized effect values of Sorensen multi-site
 dissimilarity indices * SES.FD_Dpw: Standardized effect values of mean
 pairwise functional distance between two communities * SES.PD_Dpw:
 Standardized effect values of mean pairwise phylogenetic distance between
 two communities 4. Missing data codes: None 5. Specialized formats or
 other abbreviations used: None
 \#########################################################################
 DATA-SPECIFIC INFORMATION FOR: Fasta S1: Comparative sequences of the
 mitochondrial COI gene (cytochrome c oxidase subunit Ⅰ) for each
 identified fish species. 1. Variable List: * Fish species * Comparative
 sequences of the mitochondrial COI gene * Branch Lengths * Bootstrap
 values 2. Missing data codes: None 3. Specialized formats or other
 abbreviations used: None