Ankasa Resource Reserve - Nini-Sushien National Park, Ghana

Site Details
Assessment Details

Site Overview

KBA status: confirmed

Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs. Alliance for Zero Extinction (2018): site confirmed as an AZE site during the AZE project (2015-2018). Taxonomy, nomenclature and Red List category follow the IUCN 2016 Red List.

Global KBA criteria: A1e
Year of assessment: 2018
National site name: Ankasa Resource Reserve - Nini-Sushien National Park
Central coordinates: Lat: 5.25 Long: -2.60
System: Terrestrial, Freshwater
Altitude (m): 35 to 170
Area of KBA (ha): 47,759
Protected area coverage (%): 92

Text account

Year of compilation: 2001
Site description:

The Ankasa Resource Reserve and Nini-Sushien National Park are situated in the Western Region to the north of the Axim–Mpataba road. The vegetation of the two conservation areas is wet evergreen forest and the two are reported to be botanically similar. Nini Sushien is classified as Condition 1 Forest while Ankasa Resource Reserve is Condition 2. There is a village, Nkwanta, situated some 8 km inside the reserve, whose farms cover an area of approximately 100 ha; here there is also an abandoned coconut plantation. The southern parts of Ankasa were logged from the early 1960s up to about 1974. Logging intensity was, however, relatively low due to the small amounts of commercially valuable timber.

Summary of threats to biodiversity at KBA:

The Ankasa Resource Reserve and Nini-Sushien National Park comprise the former Ankasa River Forest Reserve, designated in 1934. In 1976 the reserve was split into the Ankasa Game Production Reserve (now termed Resource Reserve, 34,900 ha), and the Nini-Sushien National Park (17,500 ha), with the Nini-Sushien river forming the boundary between the two, and the administrative authority shifted from the Forestry Department to the Wildlife Department. Ankasa is considered to be the ‘hottest’ forest in Ghana, with a GHI of 301, indicating a particularly high density of rare species. Nini Sushien (GHI 205) contains one of the few remaining blocks of relatively untouched forest in the country. This, plus the faunal diversity of the site, makes the two areas one of the most important sites for conservation of forest biodiversity in Ghana. Current protection efforts are inadequate, staffing levels are low and staff have little motivation. Hunting and illegal exploitation of non-timber forest products are evident in many parts of the reserves. Recent financial support from the European Union under the Ghana Protected Area Development Programme is expected to enhance protection of the site.


IUCN Habitat Coverage level Coverage % Habitat detail
1. Forest -
14. Artificial - Terrestrial - 11-20%
18. Unknown - 41-50%

Recommended citation

Key Biodiversity Areas Partnership (2024) Key Biodiversity Areas factsheet: Ankasa Resource Reserve - Nini-Sushien National Park. Extracted from the World Database of Key Biodiversity Areas. Developed by the Key Biodiversity Areas Partnership: BirdLife International, IUCN, American Bird Conservancy, Amphibian Survival Alliance, Conservation International, Critical Ecosystem Partnership Fund, Global Environment Facility, Re:wild, NatureServe, Rainforest Trust, Royal Society for the Protection of Birds, World Wildlife Fund and Wildlife Conservation Society. Downloaded from on 02/03/2024.