Species-level fish assemblages around Hong Kong from underwater visual census and environmental DNA metabarcoding
Data files
Dec 12, 2024 version files 33.44 KB
-
Fish-eDNA_(species_level).csv
19.86 KB
-
Fish-UVC_(species_level).csv
10.46 KB
-
README.md
3.12 KB
Abstract
This dataset contains spatiotemporal fish diversity data collected across an estuarine-urbanisation gradient around Hong Kong using both underwater visual census (UVC) and environmental DNA (eDNA) metabarcoding. The data include species-level fish community compositions from 25 sampling locations, collected during both wet and dry seasons. The study aimed to overcome challenges posed by high turbidity and document the impacts of urbanisation on coastal fish diversity. The dataset captures different components of fish communities through both methods, with a total of 11 potentially novel species detected and notable seasonal and regional variations in fish diversity.
README: Species and genus level fish assemblages around Hong Kong from underwater visual census and environmental DNA metabarcoding
https://doi.org/10.5061/dryad.5qfttdzgt
Description of the data and file structure
This dataset was collected as part of a study examining spatiotemporal patterns in coastal reef fish diversity across an estuarine-urbanisation gradient in Hong Kong. The study utilised two primary methods: underwater visual census (UVC) and environmental DNA (eDNA) metabarcoding to assess fish community structures during both wet and dry seasons. The data include fish diversity metrics, environmental parameters, and site-specific details for 25 sampling locations across Hong Kong’s coastal waters.
Files and variables
Name: Alex S.J. Wyatt
Institution: The Hong Kong University of Science and Technology
Email: wyatt@ust.hk
Name: Yu-De Pei
Institution: The Hong Kong University of Science and Technology
Email: ydpei7890@gmail.com
Dates of Data Collection
May - December 2021
Data Spatial Scope
Data were collected at 25 sites around Hong Kong. Latitudes and longitudes for each site are available in the paper.
Funding
This study was partially supported by funding from the Hong Kong Branch of the Southern Marine Science and Engineering Laboratory Guangdong Laboratory (Guangzhou) under SMSEGL20SC01 to Alex S.J. Wyatt.
Recommended Citation
Pei, Y.-D., Heard, J., Xu, W., Leung, S.K.K., Yung, C.C.M. and Wyatt, A.S.J. (in review) Characterisation of coastal reef fish assemblages across an estuarine-urbanisation gradient using underwater visual survey and environmental DNA metabarcoding. Diversity and Distributions.
File: Fish-eDNA_(species_level).csv
Description: eDNA reads at species level
Variables
- Method: underwater visual census (UVC) or environmental DNA (eDNA)
- Region: one of five regions around Hong Kong (HK): Lantau, S-HK = south HK, SE-HK = southeast HK, E-SK = east Sai Kung, N-SK = north Sai Kung
- Site: sites within regions (25 total)
- Season: Wet (May/Jun 2021) or Dry (Nov/Dec 2021)
- Collection Date: date of sample collection (dd.mm.yyyy)
- Reads: total reads in sample
- Richness: total number of species in sample
- subsequent columns: species specific reads
File: Fish-UVC_(species_level).csv
Description: UVC counts at species level
Variables
- Method: underwater visual census (UVC) or environmental DNA (eDNA)
- Region: one of five regions around Hong Kong (HK): Lantau, S-HK = south HK, SE-HK = southeast HK, E-SK = east Sai Kung, N-SK = north Sai Kung
- Site: sites within regions (25 total)
- Season: Wet (May/Jun 2021) or Dry (Nov/Dec 2021)
- Richness: total number of species in observation
- subsequent columns: species specific presence (1) or absence (blank)
Code/software
N/A
Access information
Other publicly accessible locations of the data:
- N/A
Data was derived from the following sources:
- N/A