Dataset

UNESCO eDNA expedition in Aldabra Atoll (Seychelles): April 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: Fleischer-Dogley F, Montano L, Constance A, Latsha J, Suominen S, Provoost P, Gillard E, Douvere F, Appeltans W (2024). UNESCO eDNA expedition in Aldabra Atoll (Seychelles): April 2023. Version 2.0. OBIS Secretariat. Occurrence dataset. https://doi.org/10.25607/eveucz

Published: December 08, 2024 at 17:17

License: To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0)

URL: https://ipt.obis.org/secretariat/resource?r=edna-aldabra-atoll

Contacts:

Frauke Fleischer-Dogley
Seychelles Islands Foundation

Laura Montano
Seychelles Islands Foundation

Annabelle Constance
Seychelles Islands Foundation

Joey Latsha
Seychelles Islands Foundation

Saara Suominen
UNESCO-IOC

Pieter Provoost
UNESCO-IOC

Elle Gillard
UNESCO-WHC

Fanny Douvere
UNESCO-WHC

Ward Appeltans
UNESCO-IOC

168,416
occurrence records
168,416
sequences
1,286
taxa
815
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 168,416
100.0%
maximumDepthInMeters 168,416
100.0%
minimumDepthInMeters 168,416
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 168,416
100.0%
NO_ACCEPTED_NAME 103,095
61.2%
ON_LAND 37,120
22.0%
NOT_MARINE 268
0.2%
MARINE_UNSURE 219
0.1%
NO_MATCH 8
0.0%

Measurement types

DNA derived data