RAiD 10.71676/6c66595b
NESP MaC Project 2.7 - Aerial survey of the Southern Right Whale ‘western’ sub-population off southern Australia (Murdoch Uni)

Dates

Start Date
01-Jun-2022
End Date
28-Feb-2023

Titles

Title
NESP MaC Project 2.7 - Aerial survey of the Southern Right Whale ‘western’ sub-population off southern Australia (Murdoch Uni)
Title Type
Primary
Title Type:
Primary
 Preferred full description or abstract.
Start Date
01-Jun-2022
End Date
28-Feb-2023
Language
English

Descriptions

Description

Southern right whales are listed as Endangered under the EPBC Act and are a species of national conservation significance. Monitoring of their recovery is guided by the Southern Right Whale Conservation Management Plan, which aims to improve the population’s conservation status through regular assessment of population size, calving intervals, and spatial trends.

This project continued the long-term aerial survey program of southern right whales along the southern Australian coast, spanning from Perth (WA) to Ceduna (SA). Annual surveys have been conducted since 1993, providing a continuous long-term dataset for the 'western' population and supporting national assessments of connectivity with the smaller ‘eastern’ population. The surveys contribute essential data on population trends, calving rates, and movements of individuals.

The August 2022 aerial survey ensured an uninterrupted time series in the long-term population trend data. This is particularly important given the species' non-annual breeding cycle (typically every three years). Annual surveys are essential to maintain an acceptable level of precision in estimating population trends and key life history parameters. A total of 526 whales were recorded, including 247 cow–calf pairs, 31 unaccompanied adults and one yearling. Based on long-term models, this equated to a population estimate of approximately 2,675 individuals, with an average annual growth rate of ~5.3%.

While this represents a continued population growth, results suggest a possible slowing in the rate of growth over the past 13 years (from 7.5% in 2009). The 2022 survey also recorded the lowest number of unaccompanied animals in the entire time series, extending a five-year trend of low sightings in this group. Continued monitoring of the population is needed to assess whether these changes represent longer-term shifts in population dynamics and calving intervals, and to inform adaptive management for this long-lived, slow-recovering species.
Description Type

Primary
Description Type:

Primary

 Preferred full description or abstract
Language
English

Contributors

Leader
Yes
Contact
Yes
Positions
Position
Principal or Chief Investigator
Position:
Principal or Chief Investigator
 Principal investigator refers to the person(s) in charge of a research project
Start Date
01-Jun-2022
End Date
28-Feb-2023
Roles
No Entries
Name Michael Double ORCID Logo (unauthenticated)
Contributor ID ORCID Logo https://orcid.org/0000-0002-7820-9491 (unauthenticated)
Leader
No
Contact
No
Positions
Position
Co-investigator or Collaborator
Position:
Co-investigator or Collaborator
 A Co-Investigator is a senior or key investigator involved in a research project who does not have the overall responsibility and authority of the Principal Investigator
Start Date
01-Jun-2022
End Date
28-Feb-2023
Roles
No Entries
Name Nat Kelly ORCID Logo (unauthenticated)
Contributor ID ORCID Logo https://orcid.org/0000-0002-9664-354X (unauthenticated)
Leader
No
Contact
No
Positions
Position
Co-investigator or Collaborator
Position:
Co-investigator or Collaborator
 A Co-Investigator is a senior or key investigator involved in a research project who does not have the overall responsibility and authority of the Principal Investigator
Start Date
01-Jun-2022
End Date
28-Feb-2023
Roles
No Entries
Leader
No
Contact
No
Positions
Position
Co-investigator or Collaborator
Position:
Co-investigator or Collaborator
 A Co-Investigator is a senior or key investigator involved in a research project who does not have the overall responsibility and authority of the Principal Investigator
Start Date
01-Jun-2022
End Date
28-Feb-2023
Roles
No Entries

Organisations

Roles
Role
Lead Research Organisation
Role:
Lead Research Organisation
 The research organistion administratively responsible for the project; administering organisation
Start Date
2022-06-01
End Date
2023-02-28
Roles
Role
Other Research Organisation
Role:
Other Research Organisation
 A research organisation such as a university participating in the project, usually hosting Contributors and providing other support
Start Date
2022-06-01
End Date
2023-02-28
Roles
Role
Other Research Organisation
Role:
Other Research Organisation
 A research organisation such as a university participating in the project, usually hosting Contributors and providing other support
Start Date
2022-06-01
End Date
2023-02-28

RelatedObjects

Citation

SMITH, JOSHUA, & DOUBLE, MIKE. (2023). 2022 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia [Data set]. Australian Antarctic Data Centre.
Type
Dataset
Categories
Output

Alternate Identifier

No Entries

Alternate URLs

Related RAiDs

Title
NESP Marine and Coastal Hub (10.71821/418be95a)
Relation
IsPartOf
Relation:
IsPartOf
 Relates a subproject back to its parent project

Access

Type
Open Access
Type:
Open Access
 Open access refers to a resource that is immediately and permanently online, and free for all on the Web, without financial and technical barriers.The resource is either stored in the repository or referenced to an external journal or trustworthy archive.
Language
Text
Embargo Expiry

Subjects

Subject
Wildlife and habitat management (410407)
Keywords
Text
aerial survey
Language
eng
Text
photo-identification
Language
eng
Subject
Population ecology (310307)
Keywords
Text
threatened species
Language
eng
Text
southern right whale
Language
eng
Text
endangered
Language
eng

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