Manowar and Rocky Islands (Australia) - BirdLife IBA factsheet

Manowar and Rocky Islands

Current view: Data table and detailed info

IBA Justification

The site was identified as important in 2009 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List¹	Season	Year(s)	Size	IBA criteria
Lesser Frigatebird Fregata ariel	LC	breeding	1991	7,700 breeding pairs	A4ii
Brown Booby Sula leucogaster	LC	breeding	1991	9,000-12,000 breeding pairs	A4ii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2008) is shown below.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2008	not assessed	high	not assessed
Whole site assessed?	State assessed by	Accuracy of information
yes	unset	medium

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Human intrusions and disturbance	happening now	whole area/population (>90%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

IBA Protection

Year	Protected Area	Designation	% overlap with IBA
2013	Thuwathu/Bujimulla	Indigenous Protected Area	47

Habitats

Habitat¹	Habitat detail	% of IBA
Marine Neritic		80
Marine Coastal/Supratidal		20

1. IUCN Habitat classification.

Land use

Land use	% of IBA
fisheries/aquaculture	80
other	20

Land ownership

Traditional owners are Lardil people: Rocky Island known as Kalamburriya, Manowar Island known as Delmerriya or Wudma. http://www.environment.gov.au/indigenous/publications/pubs/thuwathu-bujimulla-plan.pdf. Native title exists over the islands.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Manowar and Rocky Islands (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/manowar-and-rocky-islands-iba-australia on 23/11/2024.