Reef fish abundance, size and biomass from Aldabra Atoll (Seychelles) between 2014 and 2021 collected by the Seychelles Islands Foundation

Luke A'Bear; Maria Bielsa; April Jasmine Burt; Karen Chong-Seng; Philip Haupt; Anna Koester

doi:10.25607/hpsg9j

Reef fish abundance, size and biomass from Aldabra Atoll (Seychelles) between 2014 and 2021 collected by the Seychelles Islands Foundation

Citation

A'Bear L, Bielsa M, Burt A J, Chong-Seng K, Haupt P, Koester A, Earl C (2023). Reef fish abundance, size and biomass from Aldabra Atoll (Seychelles) between 2014 and 2021 collected by the Seychelles Islands Foundation. Version 2.0. OBIS Secretariat. Occurrence dataset. https://doi.org/10.25607/hpsg9j accessed via GBIF.org on 2024-11-21.

Description

Data was collected at Aldabra Atoll (Seychelles) by SIF staff and volunteers as part of the SIF Aldabra Reef Monitoring (ARM) programme at 12 monitoring sites between 2014 and 2021. Nine sites are on the seaward reef with permanently marked transects at both 5 m and 15 m water depth; three sites are inside the lagoon with permanently marked transects at 2 m water depth. Fish visual census surveys were conducted along one to three 50 × 4 m belt transects (i.e., one transect = 200 m2; 10 m gap between replicate transects) marked by surveyors with tape measures. The first transect was always the permanently marked transect; subsequent replicate transects were surveyed along the same compass bearing and following the same depth contour as the permanent transect. All transects of the same depth at each site were surveyed during the same dive. These data also contain occurrence data from BRUV and RUV surveys done in 2020, as well as subsistence fishery data (most recent catch events per species between 2016 and 2020) sent directly from the Seychelles Islands Foundation.

Purpose

These data were made accessible through UNESCO's eDNA Expeditions project to mobilize available marine species and occurrence datasets from World Heritage Sites.

Sampling Description

Method steps

See Github Project and R Notebook for dataset construction methods

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Fishes

Agnatha
rank: Superclass
Chondrichthyes
rank: unranked
Osteichthyes
rank: unranked

Geographic Coverages

Aldabra Atoll

Bibliographic Citations

A'Bear, Luke; Bielsa, Maria; Burt, April Jasmine; Chong-Seng, Karen; Haupt, Philip; Koester, Anna; et al. (2023). Reef fish abundance, size and biomass from Aldabra Atoll (Seychelles) between 2014 and 2021 collected by the Seychelles Islands Foundation. Figshare. Dataset. - https://doi.org/10.6084/m9.figshare.22792580.v1

Contacts

Luke A'Bear
originator
Seychelles Islands Foundation

Maria Bielsa
originator
Seychelles Islands Foundation

April Jasmine Burt
originator
Seychelles Islands Foundation

Karen Chong-Seng
originator
Seychelles Islands Foundation

Philip Haupt
originator
Seychelles Islands Foundation

Anna Koester
originator
Seychelles Islands Foundation

Chandra Earl
metadata author
position: eDNA Scientific Officer
UNESCO
email: c.earl@unesco.org

Chandra Earl
processor
position: eDNA Scientific Officer
UNESCO
email: c.earl@unesco.org

OBIS Secretariat
administrative point of contact
position: Secretariat
OBIS
email: helpdesk@obis.org