Leopard seal (Hydrurga leptonyx) observations and occurrences in the Southern Ocean

Tony R. Walker, School for Resource and Environmental Studies, Dalhousie University

Dataset credit

OBIS and OBIS Canada

Contacts

RoleNameOrganization 
Primary contact Tony R. Walker School for Resource and Environmental Studies, Dalhousie University

Citation

Walker T R (2016): Leopard seal (Hydrurga leptonyx) observations and occurrences in the Southern Ocean. v1.1. Canadian node of the Ocean Biogeographic Information System (OBIS Canada). Dataset/Occurrence. http://ipt.iobis.org/obiscanada/resource?r=leopard_seals&v=1.1
Walker, T. 2020. Leopard seal (Hydrurga leptonyx) observations and occurrences in the Southern Ocean. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152376) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/2727dda4-ce0b-4b8a-9bbc-664b519e55c6)

Abstract

Between 1993 and 1996 observations of individual leopard seals (Hydrurga leptonyx) Bird Island, South Georgia were recorded. The purpose of this study was to monitor haul out patterns, seasonality and diet of leopard seals. This sampling program resulted in a collection of photos of individual leopard seals, many of which were tagged or known individuals (based on scars or pelage patterns). The collection includes different gender and life stages and individuals exhibiting different behaviour such as feeding (Antarctic fur seal or penguin kills) or swimming. Individual seals may have been photographed multiple times. A number of individuals were tagged using Dalton Jumbotags, Dalton Supplies Ltd., UK. Other seals could be identified by unique markings (scars or pelage patterns). This resource is based upon this photo collection and includes presence information only – no information is provided to calculate density. The next version of this resource will be enhanced and include the photos associated with these observations. In addition it will also be expanded to include photos collected between 1993 to present (2016).

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/2727dda4-ce0b-4b8a-9bbc-664b519e55c6
Data Provider's dataset page:
http://ipt.iobis.org/obiscanada/resource?r=leopard_seals

References

Walker T R (2016): Leopard seal (Hydrurga leptonyx) observations and occurrences in the Southern Ocean. v1.1. Canadian node of the Ocean Biogeographic Information System (OBIS Canada). Dataset/Occurrence. http://ipt.iobis.org/obiscanada/resource?r=leopard_seals&v=1.1
Walker, T. 2020. Leopard seal (Hydrurga leptonyx) observations and occurrences in the Southern Ocean. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152376) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/2727dda4-ce0b-4b8a-9bbc-664b519e55c6)

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 ID103152376
Seabirds0
Marine mammals34
Sea turtles0
Rays and sharks0
Other species0
Non spatial0
Non species-5
Total34
Date, Begin1994-07-01
Date, End1995-10-20
Temporal prec.110000
Latitude-54.01 - -54.01
Longitude-38.06 - -38.05
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