The Real Bounty: Marine Biodiversity in the Pitcairn Islands

Alan Friedlander, Fisheries Ecology Research Laboratory, Department of Biology, University of Hawaii

Dataset credit

OBIS and SWP OBIS

Contacts

RoleNameOrganization 
Primary contact Alan Friedlander Fisheries Ecology Research Laboratory, Department of Biology, University of Hawaii
Secondary contact Kevin Mackay NIWA N/A

Citation

Friedlander AM, Caselle JE, Ballesteros E, Brown EK, Turchik A, Sala E (2017): The Real Bounty: Marine Biodiversity in the Pitcairn Islands. v1.2. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Dataset/Occurrence. https://nzobisipt.niwa.co.nz/resource?r=pitcairn&v=1.3
Friedlander, A. 2020. The Real Bounty: Marine Biodiversity in the Pitcairn Islands. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152338) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/03579385-106b-4df9-9b61-393735989db2)

Abstract

In 2012 we conducted an integrated ecological assessment of the marine environment of the Pitcairn Islands, which are four of the most remote islands in the world. The islands and atolls (Ducie, Henderson, Oeno, and Pitcairn) are situated in the central South Pacific, halfway between New Zealand and South America. We surveyed algae, corals, mobile invertebrates, and fishes at 97 sites between 5 and 30 m depth, and found 51 new records for algae, 23 for corals, and 15 for fishes. The structure of the ecological communities was correlated with age, isolation, and geomorphology of the four islands. Coral and algal assemblages were significantly different among islands with Ducie having the highest coral cover (56%) and Pitcairn dominated by erect macroalgae (42%). Fish biomass was dominated by top predators at Ducie (62% of total fish biomass) and at Henderson (35%). Herbivorous fishes dominated at Pitcairn, while Oeno showed a balanced fish trophic structure. We found high levels of regional endemism in the fish assemblages across the islands (45%), with the highest level observed at Ducie (56% by number). We conducted the first surveys of the deep habitats around the Pitcairn Islands using drop-cameras at 21 sites from depths of 78 to 1,585 m. We observed 57 fish species from the drop-cams, including rare species such as the false catshark (Pseudotriakis microdon) and several new undescribed species. In addition, we made observations of typically shallow reef sharks and other reef fishes at depths down to 300 m. Our findings highlight the uniqueness and high biodiversity value of the Pitcairn Islands as one of the least impacted in the Pacific, and suggest the need for immediate protection.

Purpose

N/A

Supplemental information

This dataset was downloaded from OBIS (https://obis.org/). The records for only marine mammals, seabirds, sea turtles and rays and sharks were extracted. Records with no longitude/latitude or no date (eventDate) were excluded.
OBIS dataset page:
https://obis.org/dataset/03579385-106b-4df9-9b61-393735989db2
Data Provider's dataset page:
https://nzobisipt.niwa.co.nz/resource?r=pitcairn

References

Friedlander AM, Caselle JE, Ballesteros E, Brown EK, Turchik A, Sala E (2017): The Real Bounty: Marine Biodiversity in the Pitcairn Islands. v1.2. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Dataset/Occurrence. https://nzobisipt.niwa.co.nz/resource?r=pitcairn&v=1.3
Friedlander, A. 2020. The Real Bounty: Marine Biodiversity in the Pitcairn Islands. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152338) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/03579385-106b-4df9-9b61-393735989db2)
Friedlander, A. 2020. The Real Bounty: Marine Biodiversity in the Pitcairn Islands. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152338) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/03579385-106b-4df9-9b61-393735989db2)

Attributes

Overview

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
oidInternal ID
idRecord ID
dataset_idDataset ID
scientificnameScientific name
vernacularnameVernacular name
aphiaidAphia ID
taxonranktaxononic rank
individualcountGroup size / individual count
eventdateEvent date (precision varies)
eventtimeEvent time
decimallatitudeLatitude in decimal degrees
decimallongitudeLongitude in decimal degrees
coordinateprecisionCoordinate precision
catalognumberCatalog number
collectioncodeCollection code
occurrencestatusOccurrence status
basisofrecordBasis of record (HumanObservation / MachineObservation)
modifiedDate/time the record was modified
node_idNode ID
occurrenceidOccurrence ID
occurrenceremarksOccurrence remarks
eventidEvent ID
institutioncodeInstitution code
lifestageLife stage
sexGender of the animal if known
speciesSpecies by provider
datasetidDataset ID by provider
countryCountry
localityLocation of ocean
waterbodyDetails of ocean
droppedFlag indicating the record was dropped (always false)
absenceFlag indicating the record represents the absence of the species (always false)
marineFlag indicating the record is for marine life (always true)
OBIS-SEAMAP ID103152338
Seabirds0
Marine mammals0
Sea turtles0
Rays and sharks4
Other species0
Non spatial0
Non species0
Total4
Date, Begin2012-01-01
Date, End2012-01-01
Temporal prec.100000
Latitude-25.08 - -23.93
Longitude-130.76 - -124.80
Coord. prec.6 decimal digits
PlatformVarious
Data typeAnimal sighting
EffortN/A
Traveled (km)0
0
Contr. throughiOBIS
Registered2020-06-30
Updated2021-02-05
StatusPublished
Sharing policy CC-BY (All)
Also available in None
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics