Gba Community Forest - Revision history

WikiEdit at 20:27, 12 October 2026

2026-10-12T20:27:44Z

← Older revision		Revision as of 16:27, 12 October 2026
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	= Ape status =		= Ape status =

	The 2010-2011 transect survey data for Gba Community Forest (c. 80 km2) estimated a chimpanzee population size of 17 chimpanzees (7- 39), with a coefficient of variation of 45%. The 2017 survey in Gba Community Forest estimated a population of 25 individuals (12-52) within the same area, with a coefficient variation of 37%. Both the 2011 and 2017 chimpanzee population size estimates have wide confidence intervals, making it challenging to understand chimpanzee population trends over the last c. 5 years (Kouakou & Campbell 2018). A total of nine individuals (five females and four males) were genotyped , including two individuals at Mt Gangra. The chimpanzee density estimated for Gba Community Forest is higher than the national average, which includes all protected and unprotected areas (Gbelee 2022). In addition, a rapid assessment was done in the ENNR, Blei and Zor forest in the east of Nimba forest. There is no baseline data on chimpanzees for ENNR which make it hard to estimate potential gains. Preliminary data suggest that there could be a chimpanzee population size of between 13 and 63 chimpanzees (Gbelee 2022).		The 2010-2011 transect survey data for Gba Community Forest (c. 80 km2) estimated a chimpanzee population size of 17 chimpanzees (7- 39), with a coefficient of variation of 45%. The 2017 survey in Gba Community Forest estimated a population of 25 individuals (12-52) within the same area, with a coefficient variation of 37%. Both the 2011 and 2017 chimpanzee population size estimates have wide confidence intervals, making it challenging to understand chimpanzee population trends over the last c. 5 years ([[#R00594\|Kouakou & Campbell 2018]]). A total of nine individuals (five females and four males) were genotyped , including two individuals at Mt Gangra. The chimpanzee density estimated for Gba Community Forest is higher than the national average, which includes all protected and unprotected areas (Gbelee 2022). In addition, a rapid assessment was done in the ENNR, Blei and Zor forest in the east of Nimba forest. There is no baseline data on chimpanzees for ENNR which make it hard to estimate potential gains. Preliminary data suggest that there could be a chimpanzee population size of between 13 and 63 chimpanzees (Gbelee 2022).

	'''Table 2. Ape population estimates reported for Gba Community Forest'''		'''Table 2. Ape population estimates reported for Gba Community Forest'''
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	\|Line transects		\|Line transects
	\|		\|
	\|Kouakou & Campbell 2018		\|[[#R00594\|Kouakou & Campbell 2018]]
	\|A total of 51 transects of 1 km in length were included in the Gba Community Forest within a survey area totalling c. 80 km2 Transects were walked at a speed of between 0.5-1 km/hr to ensure sufficient time to search through the canopy to detect chimpanzees.		\|A total of 51 transects of 1 km in length were included in the Gba Community Forest within a survey area totalling c. 80 km2 Transects were walked at a speed of between 0.5-1 km/hr to ensure sufficient time to search through the canopy to detect chimpanzees.
	\|		\|
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	\|Line transects		\|Line transects
	\|		\|
	\|Kouakou & Campbell 2018		\|[[#R00594\|Kouakou & Campbell 2018]]
	\|A total of 51 transects of 1 km in length were included in the Gba Community Forest within a survey area totalling c. 80 km2 Transects were walked at a speed of between 0.5-1 km/hr to ensure sufficient time to search through the canopy to detect chimpanzees.		\|A total of 51 transects of 1 km in length were included in the Gba Community Forest within a survey area totalling c. 80 km2 Transects were walked at a speed of between 0.5-1 km/hr to ensure sufficient time to search through the canopy to detect chimpanzees.
	\|		\|
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	= Threats =		= Threats =

	Hunting animals using guns and setting traps along long fences to capture animals and doing large slash-and-burn farms in primary forest. Finally, the use of chainsaw to harvest logs for timber production (Kouakou & Campbell 2018).		Hunting animals using guns and setting traps along long fences to capture animals and doing large slash-and-burn farms in primary forest. Finally, the use of chainsaw to harvest logs for timber production ([[#R00594\|Kouakou & Campbell 2018]]).

	'''Table 3. Threats to apes reported for Gba Community Forest'''		'''Table 3. Threats to apes reported for Gba Community Forest'''
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	\|2.1 Annual & perennial non-timber crops		\|2.1 Annual & perennial non-timber crops
	\|High (more than 70% of population affected)		\|High (more than 70% of population affected)
	\|Habitat destruction as a result of slash and burn is very high (Kouakou & Campbell 2018).		\|Habitat destruction as a result of slash and burn is very high ([[#R00594\|Kouakou & Campbell 2018]]).
	\|Ongoing (2018)		\|Ongoing (2018)
	\|-		\|-
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	\|5.1 Hunting & collecting terrestrial animals		\|5.1 Hunting & collecting terrestrial animals
	\|High (more than 70% of population affected)		\|High (more than 70% of population affected)
	\|Kouakou & Campbell 2018		\|[[#R00594\|Kouakou & Campbell 2018]]
	\|Ongoing (2018)		\|Ongoing (2018)
	\|}		\|}
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	= References =		= References =

	References Kouakou, C. & Campbell, G.; (2018). Chimpanzee baseline surveys in Gba Community Forest, West Nimba		<span id="R00594"></span>References Kouakou, C. & Campbell, G.; (2018). Chimpanzee baseline surveys in Gba Community Forest, West Nimba



	'''Page created by: '''Forkpayea W. Gbelee''' Date:''' 2022-12-19		'''Page created by: '''Forkpayea W. Gbelee''' Date:''' 2022-12-19

WikiEdit at 14:45, 1 September 2026

2026-09-01T14:45:27Z

← Older revision		Revision as of 10:45, 1 September 2026
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	\|-		\|-
	\|''Pan troglodytes verus''		\|''Pan troglodytes verus''
	\|~~2010-2011~~		\|2017
	\|		\|
	\|		\|
	\|		\|
	\|17 (7-39)		\|25 (12-52)
	\|80 km²		\|80 km²
	\|Line transects		\|Line transects
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	\|-		\|-
	\|''Pan troglodytes verus''		\|''Pan troglodytes verus''
	\|~~2017~~		\|2010-2011
	\|		\|
	\|		\|
	\|		\|
	\|25 (12-52)		\|17 (7-39)
	\|80 km²		\|80 km²
	\|Line transects		\|Line transects

WikiEdit at 14:43, 25 March 2026

2026-03-25T14:43:42Z

← Older revision		Revision as of 10:43, 25 March 2026
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	* Key threats to chimpanzees are poaching and habitat loss due to agricultural expansion.		* Key threats to chimpanzees are poaching and habitat loss due to agricultural expansion.
	* Conservation activities have focused on poaching patrols and supporting local farmers.		* Conservation activities have focused on poaching patrols and supporting local farmers.





	= Site characteristics =		= Site characteristics =

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[[West Africa]] > [[Liberia]] > [[Gba Community Forest]]

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__TOC__
= Summary =

<div style='float: right'>{{#display_map: height=190px | width=300px | scrollzoom=off | zoom=5 | layers=OpenStreetMap,OpenTopoMap|7.471684, -8.680312~[[Gba Community Forest]]~''Pan troglodytes verus''}}</div>
* Western chimpanzees (''Pan troglodytes verus'') are present in Gba Community Forest.
* It has been estimated that 25 (CI: 12-52) individuals occur in the site.
* The chimpanzee population trend is increasing.
* The site has a total size of 80 km².
* Key threats to chimpanzees are poaching and habitat loss due to agricultural expansion.
* Conservation activities have focused on poaching patrols and supporting local farmers.

= Site characteristics =

The Gba Community Forest is located in the Proposed Protected Area of West Nimba, located opposite the East Nimba Nature Reserve (ENNR). The Community Forest is adjacent to ArcelorMittal Liberia Mines on the western ranges of Nimba. The Community Forest was established by an act of Legislature on October 9, 2011 by the Forestry Development Authority of Liberia. The Community Forest is a home to some of Liberia's protected species; some of which are of global concern. It is also a home to some endemic species of the northern Nimba forest landscape (Gbelee 2022).

'''Table 1. Basic site information for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="Site_characteristics-table"
|Species
|''Pan troglodytes verus''
|-
|Area
|80 km²
|-
|Coordinates
|Lat: 7.471684 , Lon: -8.680312
|-
|Type of site
|Non-protected area (Community Forest)
|-
|Habitat types
|Subtropical/tropical moist lowland forest
|-
|Type of governance
|
|}

[[Types of sites]] [[Governance types]] [[Habitat types]]
= Ape status =

The 2010-2011 transect survey data for Gba Community Forest (c. 80 km2) estimated a chimpanzee population size of 17 chimpanzees (7- 39), with a coefficient of variation of 45%. The 2017 survey in Gba Community Forest estimated a population of 25 individuals (12-52) within the same area, with a coefficient variation of 37%. Both the 2011 and 2017 chimpanzee population size estimates have wide confidence intervals, making it challenging to understand chimpanzee population trends over the last c. 5 years (Kouakou & Campbell 2018). A total of nine individuals (five females and four males) were genotyped , including two individuals at Mt Gangra. The chimpanzee density estimated for Gba Community Forest is higher than the national average, which includes all protected and unprotected areas (Gbelee 2022). In addition, a rapid assessment was done in the ENNR, Blei and Zor forest in the east of Nimba forest. There is no baseline data on chimpanzees for ENNR which make it hard to estimate potential gains. Preliminary data suggest that there could be a chimpanzee population size of between 13 and 63 chimpanzees (Gbelee 2022).

'''Table 2. Ape population estimates reported for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="Ape_status-table"
!Species
!Year
!Occurrence
!Encounter or vistation rate (nests/km; ind/day)
!Density estimate [ind./ km²] (95% CI)
!Abundance estimate (95% CI)
!Survey area
!Sampling method
!Analytical framework
!Source
!Comments
!A.P.E.S. database ID
|-
|''Pan troglodytes verus''
|2010-2011
|
|
|
|17 (7-39)
|80 km²
|Line transects
|
|Kouakou & Campbell 2018
|A total of 51 transects of 1 km in length were included in the Gba Community Forest within a survey area totalling c. 80 km2 Transects were walked at a speed of between 0.5-1 km/hr to ensure sufficient time to search through the canopy to detect chimpanzees.
|
|-
|''Pan troglodytes verus''
|2017
|
|
|
|25 (12-52)
|80 km²
|Line transects
|
|Kouakou & Campbell 2018
|A total of 51 transects of 1 km in length were included in the Gba Community Forest within a survey area totalling c. 80 km2 Transects were walked at a speed of between 0.5-1 km/hr to ensure sufficient time to search through the canopy to detect chimpanzees.
|
|}

[[Sampling methods]] [[Analytical frameworks]]
= Threats =

Hunting animals using guns and setting traps along long fences to capture animals and doing large slash-and-burn farms in primary forest. Finally, the use of chainsaw to harvest logs for timber production (Kouakou & Campbell 2018).

'''Table 3. Threats to apes reported for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="Threats-table"
!Category
!Specific threats
!Threat level
!Description
!Year of threat
|-
|2 Agriculture & aquaculture
|2.1 Annual & perennial non-timber crops
|High (more than 70% of population affected)
|Habitat destruction as a result of slash and burn is very high (Kouakou & Campbell 2018).
|Ongoing (2018)
|-
|5 Biological resource use
|5.1 Hunting & collecting terrestrial animals
|High (more than 70% of population affected)
|Kouakou & Campbell 2018
|Ongoing (2018)
|}

[[Threats]]
= Conservation activities =

'''Table 4. Conservation activities reported for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="Conservation_activities-table"
!Category
!Specific activity
!Description
!Implementing organization(s)
!Year of activity
|-
|2 Counter-wildlife crime
|2.3 Conduct regular anti-poaching patrols
|The AML - Biodiversity Conservation Program provide support to the Co-Management committee of the ENNR, the Gba Community Forest Management Body, Zor Community Forest Management Body and the Blei Community Forest Management Body for conducting law enforcement patrols and forest biomonitoring in their various respective areas (Gbelee 2022).
|
|Ongoing (2022)
|-
|7 Economic & other incentives
|7.2 Provide non-monetary benefits to local communities for sustainably managing their forest and its wildlife (e.g., better education, infrastructure development)
|Under the AML - Biodiversity Conservation Program, we are providing support to over 850 local farmers involved in climate smart conservation agriculture in the landscape; mainly lowland/swamp farming (Gbelee 2022).
|
|Ongoing (2022)
|}

[[Conservation activities]]
= Challenges =

Inadequate logistics to support law enforcement personnel ( forest rangers, community forest guards and frontline conservationists/eco-assistants); inadequate financial resources to support conservation activities. Most of the community people are yet to accept forest conservation as a priority that will improve their livelihood. Judicial support to law enforcement is limited in Liberia; specially to prosecute people found in illegal activities in the forests. Unavailability of environmental courts to prosecute violators of environmental and conservation laws.

'''Table 5. Challenges reported for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="Challenges-table"
!Challenges
!Specific challenges
!Source
!Year(s)
|-
|3 Engaged community
|3.1 General lack of community engagement or support
|Gbelee 2022
|
|}

[[Challenges]]
= Enablers =

'''Table 6. Enablers reported for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="enabler-table"
!Enablers
!Specific enablers
!Source
!Year(s)
|-
|1 Site management
|
|
|
|-
|2 Resources and capacity
|
|
|
|-
|3 Engaged community
|
|
|
|-
|4 Institutional support
|
|
|
|-
|5 Ecological context
|
|
|
|-
|6 Safety and stability
|
|
|
|}

[[Enablers]]
= Research activities =

As part of the last ESIA, chimpanzee baseline surveys were conducted in 2011-2012 in West Nimba (including Gba Community Forest) by the Wild Chimpanzee Foundation (WCF) and Action pour la Conservation de la Biodiversité en Côte d’Ivoire (ACB-CI), in partnership with Conservation International (CI) (ArcelorMittal Liberia & Conservation International 2011). An additional study was conducted by Dr. Celestin Kouakou, Independent Consultant and Dr. Genevieve Campbell, The Biodiversity Consultancy in 2018.

= Documented behaviours =

'''Table 7. Behaviours documented for Gba Community Forest'''
{| border="1" cellpadding="5" cellspacing="0" class="behaviours-table"
!Category
!Behavior
!Observation type
!Prevalence
!Observation dates
!Source
!Habituation
!Species
!Comment
|-
|
|Not reported
|
|
|
|
|
|
|
|}

[[Behaviours]]
= Exposure to climate change impacts =

= External links =

= References =

References Kouakou, C. & Campbell, G.; (2018). Chimpanzee baseline surveys in Gba Community Forest, West Nimba

'''Page created by: '''Forkpayea W. Gbelee''' Date:''' 2022-12-19