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RAiD https://raid.org/10.71676/dab979b5
NESP MaC Project 3.14 - Assessing changes in black rockcod abundance and size, 2023-2024 (NSW DPI)

Dates

Start Date
10-Jan-2023
End Date
30-Jun-2024

Titles

Title
NESP MaC Project 3.14 - Assessing changes in black rockcod abundance and size, 2023-2024 (NSW DPI)
Title Type
Primary
Title Type:
Primary
 Preferred full description or abstract.
Start Date
10-Jan-2023
End Date
30-Jun-2024
Language
English

Descriptions

Description

The black rockcod (Epinephelus daemelii) is a long-lived, reef-dwelling species listed as Vulnerable under Commonwealth and NSW legislation. In Australia it occurs along the coast of New South Wales, including at Lord Howe Island. Although protected from fishing in NSW since 1983, the species is vulnerable to illegal take, incidental capture, barotrauma-related mortality, and degradation of nursery habitats. Long-term monitoring is a high priority for assessing whether recovery actions and spatial protections are improving population status.

This project repeated the broadscale baseline survey of black rockcod across northern NSW and Lord Howe Island, extending a monitoring program that began in 2009-2011 and included smaller key-site surveys every four to five years. Divers surveyed reef sites, photographed and filmed individual fish, recorded habitat and depth, and estimated fish lengths, including with stereo-video where possible. Additional local field capability was built through Indigenous engagement and community-based monitoring activities.

These survey outputs contributed to a 15-year time series (2009-2024) on abundance, occupancy, size structure, habitat associations, and spatial distribution of black rockcod. The results indicated continued low abundance across the species’ surveyed range, while also identifying larger mature individuals and higher abundances in some no-take sanctuary zones. The long-term dataset provided evidence for assessing recovery actions and sanctuary zone effectiveness, informs future monitoring priorities, and supports potential reassessment of the species’ threatened status.
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
10-Jan-2023
End Date
30-Jun-2024
Roles
No Entries
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
10-Jan-2023
End Date
30-Jun-2024
Roles
No Entries

Organisations

Name
New South Wales Department of Primary Industries

Roles
Role
Lead Research Organisation
Role:
Lead Research Organisation
 The research organistion administratively responsible for the project; administering organisation
Start Date
2023-01-10
End Date
2024-06-30

RelatedObjects

Citation

Harasti, D., Malcolm, H., Louden, H., & Cadiou, G. (2025). Black rockcod Underwater Visual Census (UVC) data from northern NSW and Lord Howe Island 2023-24 [Dataset]. Institute for Marine and Antarctic Studies.
Type
Dataset
Categories
Output
Citation

Harasti, D., & Malcolm, H. A. (2024). Assessing changes in threatened black rockcod Epinephelus daemelii abundance and length over the past 15 years in New South Wales, Australia. Journal of Fish Biology, 106(4), 1160–1168. Portico.
Type
Journal Article
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
Marine Parks
Language
eng
Text
Threatened species
Language
eng
Subject
Population ecology (310307)
Keywords
Text
Population estimates
Language
eng
Subject
Marine and estuarine ecology (incl. marine ichthyology) (310305)
Keywords
Text
Black rockcod
Language
eng
Text
Epinephelus daemelii
Language
eng

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