Tubbataha Reefs Natural Park: the first comprehensive elasmobranch assessment reveals global hotspot for reef sharks: Fishes Checklist

Latest version published by OBIS Secretariat on 13 September 2023 OBIS Secretariat
Publication date:
13 September 2023
Published by:
OBIS Secretariat
CC0 1.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 14 records in English (5 KB) - Update frequency: not planned
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Metadata as an RTF file download in English (10 KB)


A total of 113 BRUV surveys were completed throughout 2015 and 2016. The BRUV surveys documented a CMaxN of 237 elasmobranchs from 14 species and one unidentified Carcharhinid. The overall CPUE from both years was 2.09 (Table 1), with at least one elasmobranch encounter occurring in 92.03% (n = 104) of surveys. Carcharhinus amblyrhynchos, the most abundant species, with a CMaxN of 103, occurred in 54.87% of surveys, recording an overall CPUE of 0.91 (x = 0.91 +- 1.64 SD). Triaenodon obesus were also abundant, with a CMaxN of 98, and were present in 71.68% of surveys with an overall CPUE of 0.87 (x = 0.87 +- 0.84 SD). Other shark species observed during two years of sampling were, in order of decreasing CMaxN, tiger shark Galeocerdo cuvier (CMaxN = 8), blacktip reef shark Carcharhinus melanopterus (8), scalloped hammerhead shark Sphyrna lewini (7), tawny nurse shark Nebrius ferrugineus (2), thresher shark Alopias sp. (2), silky shark Carcharhinus falciformis (1), silvertip shark Carcharhinus albimarginatus (1), and whale shark Rhincodon typus (1). Batoid species observed were spotted eagle ray Aetobatus spp. (2), round ribbontail ray Taeinurops meyeni (1), bluespotted ribbontail ray Taeniura lymma (1), and a manta ray Mobula sp. (1). There was no significant difference between years in CPUE of C. amblyrhynchos in shallow habitats (PERMANOVA, p = 0.297, Pseudo-F = 1.139) and deep habitats (p = 0.48, Pseudo-F = 0.607). Similarly, no significant difference in the abundance of T. obesus; abundance was evident between years in shallow (p = 0.19, Pseudo-F = 2.122) and deep habitats (p = 0.171, Pesudo-F 2.28).

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 14 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Murray R, Conales Jr. S, Araujo G, Labaja J, Snow S J, Pierce S J, Songco A, Ponzo A, Earl C (2023). Tubbataha Reefs Natural Park: the first comprehensive elasmobranch assessment reveals global hotspot for reef sharks: Fishes Checklist. Version 2.0. OBIS Secretariat. Occurrence dataset. https://doi.org/10.25607/w4dalx


Researchers should respect the following rights statement:

The publisher and rights holder of this work is OBIS Secretariat. 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). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: fd5c6d5a-a507-4df9-9cd0-cb1f382ec94d.  OBIS Secretariat publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.




Ryan Murray
  • Originator
Large Marine Vertebrates Research Institute Philippines
Segundo Conales Jr.
  • Originator
Tubbataha Management Office
Gonzalo Araujo
  • Originator
Large Marine Vertebrates Research Institute Philippines
Jessica Labaja
  • Originator
Large Marine Vertebrates Research Institute Philippines
Sally J. Snow
  • Originator
Large Marine Vertebrates Research Institute Philippines
Simon J. Pierce
  • Originator
Marine Megafauna Foundation
Angelique Songco
  • Originator
Tubbataha Management Office
Alessandro Ponzo
  • Originator
Large Marine Vertebrates Research Institute Philippines
Chandra Earl
  • Metadata Provider
  • Processor
eDNA Scientific Officer
OBIS Secretariat
  • Point Of Contact

Geographic Coverage

Tubbataha Reefs Natural Park

Bounding Coordinates South West [8.693, 119.763], North East [9.101, 120.056]

Taxonomic Coverage


Superclass Agnatha
Unranked Chondrichthyes, Osteichthyes

Temporal Coverage

Start Date / End Date 2015-03-01 / 2016-06-30

Sampling Methods

No Description available

Method step description:

  1. See Github Project and R Notebook for dataset construction methods

Bibliographic Citations

  1. Murray, Ryan & Conales, Segundo & Araujo, Gonzalo & Labaja, Jessica & Snow, Sally & Pierce, Simon & Songco, Angelique & Ponzo, Alessandro. (2018). Tubbataha Reefs Natural Park: First comprehensive elasmobranch assessment reveals global hotspot for reef sharks. Journal of Asia-Pacific Biodiversity. 12. https://doi.org/10.1016/j.japb.2018.09.009

Additional Metadata

marine, harvested by iOBIS

Purpose These data were made accessible through UNESCO's eDNA Expeditions project to mobilize available marine species and occurrence datasets from World Heritage Sites.
Alternative Identifiers 10.25607/w4dalx