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Description |
Geographic Range [top]
Range Description: Accipiter erythrauchen is found on the islands of Morotai, Halmahera, Bacan, Obi, Buru, Ambon and Seram, Indonesia (Ferguson-Lees and Christie 2001).
Countries occurrence:
Native:
Indonesia
Additional data:
? Continuing decline in area of occupancy (AOO): Unknown
? Extreme fluctuations in area of occupancy (AOO): No ? Estimated extent of occurrence (EOO) - km2: 240000
? Continuing decline in extent of occurrence (EOO): Unknown ? Extreme fluctuations in extent of occurrence (EOO): No
? Continuing decline in number of locations: Unknown
? Extreme fluctuations in the number of locations: No
? Upper elevation limit (metres): 1400
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The population is estimated to number 1,000-10,000 individuals, roughly equating to 670-6,700 mature individuals.
Trend Justification: The population is suspected to be in decline owing to on-going habitat destruction (Ferguson-Lees and Christie 2001). A recent sudy by Vetter (2009) used remote sensing techniques to track the rate and spatial pattern of forest loss in the Northern Maluku Endemic Bird Area (EBA) between 1990 and 2003, and project rates of deforestation over the next three generations for restricted range bird species found in this region, with consequent recommendations for category changes on the IUCN Red List. This study estimated the rate of forest loss within the elevation range of Rufous-necked Sparrowhawk in the EBA to be c.18.7% between 1990 and 2003, and projected the loss of c.33.6% of forest in its range in the EBA over the next three generations (estimated by BirdLife to be c.22 years, based on an estimated generation length of c.7.2 years). The species, however, shows some tolerance of habitat modification and occurs in montane areas where forest may be comparatively more secure, perhaps buffering its population against the impacts of deforestation across its range. There is also uncertainty over deforestation rates in parts of the species’s range not covered by Vetter’s (2009) study, such as Buru and Seram. It is therefore suspected that the species will experience a population decline of 25-29% over 22 years, from 2004 until 2026.
Current Population Trend: Decreasing
Additional data:
? Number of mature individuals: 670-6700 ? Continuing decline of mature individuals: Unknown
? Extreme fluctuations: No ? Population severely fragmented: No
? Continuing decline in subpopulations: Unknown
? Extreme fluctuations in subpopulations: No ? All individuals in one subpopulation: No
Habitat and Ecology [top]
Habitat and Ecology: This species inhabits primary forest in the lowlands and hills, from sea-level to 1,400 m, including partially cleared areas, and has adapted to some plantations (Ferguson-Lees and Christie 2001).
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Unknown
Generation Length (years): 7.2
Movement patterns: Not a Migrant
Threats [top]
Major Threat(s):
The primary threat to the species is habitat loss through commercial logging for timber, and clearance for shifting agriculture, mining, settlements and plantations of coconut, clove, nutmeg and timber species (Vetter 2009, Hanom Bashari in litt. 2016). Another potential threat is posed by wildfires, which have devastated areas on other Indonesian islands, with the chances of such fires being increased by the conversion of forest to scrub and grassland and the opening up of forests for road construction, as well as selective logging and fragmentation (Vetter 2009).
Conservation Actions [top]
Conservation Actions: Conservation Actions Underway
There are no targeted conservation actions known for this species, although it occurs in Aketajawe Lolobata National Park (Bashari 2012).
Conservation Actions Proposed
Conduct surveys to assess the speciess total population size. Carry out regular monitoring to track population trends. Undertake regular studies of satellite images to quantify habitat trends. Increase the area of suitable habitat that has protected status.
Citation: BirdLife International. 2016. Accipiter erythrauchen. The IUCN Red List of Threatened Species 2016: e.T22695596A93518315. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22695596A93518315.en. Downloaded on 06 September 2018.
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