Dataset

UNESCO eDNA expedition in The Sundarbans (Bangladesh): February 2023

OBIS Secretariat DNADerivedData Open in mapper Explore occurrences

This dataset contains the eDNA data collected as a part of the UNESCO eDNA expeditions in Marine World Heritage Sites project in 2022-2024. The project was coordinated in collaboration with the Ocean Biodiversity Information System (OBIS) of IOC-UNESCO and the marine programme of the UNESCO World Heritage Center, and funded by the government of Flanders (Kingdom of Belgium). The samples were collected with citizen science eDNA sampling kits, containing a syringe and a filter, and preserved with Longmire's buffer, before sequencing at a central laboratory. Five different biomarkers were analysed, including 12SMifish, Mimammal, Teleo, 16S-Vert and COI markers. The sequences were analysed with the PacMAN pipeline and quality controlled including a validation check by local scientists and site managers as well as compared to existing knowledge on species distributions in OBIS and GBIF. The full sampling protocols and materials are available on the project website (https://www.unesco.org/en/edna-training-materials?hub=66910), and the bioinformatics pipeline is on github (https://github.com/iobis/PacMAN-pipeline). The data can also be explored on the eDNA expeditions dashboard (https://dashboard.ednaexpeditions.org/).

Citation: Ahsan Habib K, Rashed M, Sakib N, Suominen S, Provoost P, Gillard E, Douvere F, Appeltans W (2024). UNESCO eDNA expedition in The Sundarbans (Bangladesh): February 2023. Version 2.0. OBIS Secretariat. Occurrence dataset. https://doi.org/10.25607/rt4e3h

Published: December 08, 2024 at 17:26

URL: https://ipt.obis.org/secretariat/resource?r=edna-the-sundarbans

Kazi Ahsan Habib
Dept. of Fisheries Biology and Genetics, Sher-e-Bangla Agricultural University

Mohammad Rashed
Dept. of Fisheries Biology and Genetics, Sher-e-Bangla Agricultural University

Nazmus Sakib
Dept. of Fisheries Biology and Genetics, Sher-e-Bangla Agricultural University

Saara Suominen
UNESCO-IOC

Pieter Provoost
UNESCO-IOC

Elle Gillard
UNESCO-WHC

Fanny Douvere
UNESCO-WHC

Ward Appeltans
UNESCO-IOC

77,255
occurrence records
77,255
sequences
379
taxa
157
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 77,255
100.0%
maximumDepthInMeters 77,255
100.0%
minimumDepthInMeters 77,255
100.0%
scientificNameID 8
0.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 77,255
100.0%
NO_ACCEPTED_NAME 48,656
63.0%
ON_LAND 13,494
17.5%
NOT_MARINE 208
0.3%
MARINE_UNSURE 129
0.2%
NO_MATCH 8
0.0%

Measurement types

DNA derived data