Deng Deng National Park - Revision history

WikiEdit at 21:52, 15 October 2026

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	<span id="R00449"></span>WCS. (n.d.). WCS Cameroon Deng Deng National Park project. https://cameroon.wcs.org/Wild-Places/Deng-Deng-National-Park.aspx		<span id="R00449"></span>WCS. (n.d.). WCS Cameroon Deng Deng National Park project. https://cameroon.wcs.org/Wild-Places/Deng-Deng-National-Park.aspx

	<span id="R02179"></span>Kiribou, R., Tehoda, P., Chukwu, O., Bempah, G., Kühl, H. S., Ferreira, J., …, & Heinicke, S. (2024). Exposure of African ape sites to climate change impacts. ''PLOS Climate'', 3(2), ~~1-19~~. [https://doi.org/10.1371/journal.pclm.0000345 doi:10.1371/journal.pclm.0000345]		<span id="R02179"></span>Kiribou, R., Tehoda, P., Chukwu, O., Bempah, G., Kühl, H. S., Ferreira, J., …, & Heinicke, S. (2024). Exposure of African ape sites to climate change impacts. ''PLOS Climate'', 3(2), e0000345. [https://doi.org/10.1371/journal.pclm.0000345 doi:10.1371/journal.pclm.0000345]

WikiEdit at 14:33, 15 October 2026

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	<span id="R00449"></span>WCS. (n.d.). WCS Cameroon Deng Deng National Park project. https://cameroon.wcs.org/Wild-Places/Deng-Deng-National-Park.aspx		<span id="R00449"></span>WCS. (n.d.). WCS Cameroon Deng Deng National Park project. https://cameroon.wcs.org/Wild-Places/Deng-Deng-National-Park.aspx

	<span id="R02179"></span>Kiribou, R., Tehoda, P., Chukwu, O., Bempah, G., Kühl, H. S., Ferreira, J., …, & Heinicke, S. (2024). Exposure of African ape sites to climate change impacts. ''PLOS Climate'', 3(2), ~~e0000345~~. [https://doi.org/10.1371/journal.pclm.0000345 doi:10.1371/journal.pclm.0000345]		<span id="R02179"></span>Kiribou, R., Tehoda, P., Chukwu, O., Bempah, G., Kühl, H. S., Ferreira, J., …, & Heinicke, S. (2024). Exposure of African ape sites to climate change impacts. ''PLOS Climate'', 3(2), 1-19. [https://doi.org/10.1371/journal.pclm.0000345 doi:10.1371/journal.pclm.0000345]

WikiEdit at 00:10, 15 October 2026

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	= Site characteristics =		= Site characteristics =

	Deng Deng National Park is located in eastern Cameroon, about 50 km southeast of the [[Mbam et Djerem National Park]]. In 1998, the Cameroon Oil Transportation Company (COTCO) commissioned an environmental impact survey for a proposed oil pipeline route from Chad to Cameroon. The survey identified a forested area along the pipeline, known as Deng Deng, which is geographically isolated from most of southern Cameroon’s forests by savannas and agricultural lands ([[#R00446\|Maisels et al. 2011]]). The site has a wide diversity of wildlife species from both savanna and forest habitats. In addition to western lowland gorillas and central chimpanzees, other mammals found at the site include three species of pangolins (white-bellied, black-bellied, and giant ground pangolins), forest elephants, golden cats, red river hogs, and duikers ([[#R00446\|Maisels et al. 2011]], [[#R00448\|Maurice et al. 2019]]). The park was demarcated within the wider Deng Deng forest reserve created in 1971, which includes a communal forest and logging concessions (Forest Management Unit, or UFA). In combination with the nearby [[Mbam et Djerem National Park]], adjacent logging concessions, and community forests, the area forms the largest conservation landscape in Cameroon (WCS n.d.). The site was designated as a national park in 2010 ([[#R00446\|Maisels et al. 2011]]).		Deng Deng National Park is located in eastern Cameroon, about 50 km southeast of the [[Mbam et Djerem National Park]]. In 1998, the Cameroon Oil Transportation Company (COTCO) commissioned an environmental impact survey for a proposed oil pipeline route from Chad to Cameroon. The survey identified a forested area along the pipeline, known as Deng Deng, which is geographically isolated from most of southern Cameroon’s forests by savannas and agricultural lands ([[#R00446\|Maisels et al. 2011]]). The site has a wide diversity of wildlife species from both savanna and forest habitats. In addition to western lowland gorillas and central chimpanzees, other mammals found at the site include three species of pangolins (white-bellied, black-bellied, and giant ground pangolins), forest elephants, golden cats, red river hogs, and duikers ([[#R00446\|Maisels et al. 2011]], [[#R00448\|Maurice et al. 2019]]). The park was demarcated within the wider Deng Deng forest reserve created in 1971, which includes a communal forest and logging concessions (Forest Management Unit, or UFA). In combination with the nearby [[Mbam et Djerem National Park]], adjacent logging concessions, and community forests, the area forms the largest conservation landscape in Cameroon ([[#R00449\|WCS n.d]].). The site was designated as a national park in 2010 ([[#R00446\|Maisels et al. 2011]]).

	'''Table 1. Basic site information for Deng Deng National Park'''		'''Table 1. Basic site information for Deng Deng National Park'''
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	= Threats =		= Threats =

	The main threats to great apes and other wildlife in the area are poaching and illegal logging (WCS n.d.). The ongoing construction of the 60,000 ha Lom Pangar dam is likely to exacerbate these threats by bringing many people to the region who will engage in natural resource extraction (WCS n.d.). Information collected by the park's team suggests that there is a significant trade in bushmeat from the Deng Deng forest to Belabo and Bertoua. It is therefore highly likely that the decline in great ape densities observed between 2012 and 2016 in the PNDD is the result of increased poaching pressure in the Deng Deng forest massif as a whole ([[#R00445\|Benavides et al. 2016]]).		The main threats to great apes and other wildlife in the area are poaching and illegal logging ([[#R00449\|WCS n.d]].). The ongoing construction of the 60,000 ha Lom Pangar dam is likely to exacerbate these threats by bringing many people to the region who will engage in natural resource extraction ([[#R00449\|WCS n.d]].). Information collected by the park's team suggests that there is a significant trade in bushmeat from the Deng Deng forest to Belabo and Bertoua. It is therefore highly likely that the decline in great ape densities observed between 2012 and 2016 in the PNDD is the result of increased poaching pressure in the Deng Deng forest massif as a whole ([[#R00445\|Benavides et al. 2016]]).

	'''Table 3. Threats to apes reported for Deng Deng National Park'''		'''Table 3. Threats to apes reported for Deng Deng National Park'''
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	= Conservation activities =		= Conservation activities =

	Wildlife Conservation Society (WCS) began working in the Deng Deng landscape in 2009, as part of a collaborative effort between WCS and the Ministry of Forestry and Wildlife (MINFOF), with funding support from the French Development Agency (WCS n.d.).		Wildlife Conservation Society (WCS) began working in the Deng Deng landscape in 2009, as part of a collaborative effort between WCS and the Ministry of Forestry and Wildlife (MINFOF), with funding support from the French Development Agency ([[#R00449\|WCS n.d]].).

	'''Table 4. Conservation activities reported for Deng Deng National Park'''		'''Table 4. Conservation activities reported for Deng Deng National Park'''

WikiEdit at 19:08, 14 October 2026

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	\|[[#R00447\|Maisels et al. 2013]]		\|[[#R00447\|Maisels et al. 2013]]
	\|		\|
	\|CMR0028, CMR0029, CMR0123		\|CMR0028, CMR0029<div class="mw-collapsible mw-collapsed" data-expandtext="+1 more" data-collapsetext="less">CMR0123</div>
	\|-		\|-
	\|''Pan troglodytes troglodytes'' & ''Gorilla gorilla gorilla''		\|''Pan troglodytes troglodytes'' & ''Gorilla gorilla gorilla''
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	\|[[#R00447\|Maisels et al. 2013]]		\|[[#R00447\|Maisels et al. 2013]]
	\|		\|
	\|CMR0028, CMR0029, CMR0123		\|CMR0028, CMR0029<div class="mw-collapsible mw-collapsed" data-expandtext="+1 more" data-collapsetext="less">CMR0123</div>
	\|-		\|-
	\|''Pan troglodytes troglodytes''		\|''Pan troglodytes troglodytes''
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	\|[[#R00447\|Maisels et al. 2013]]		\|[[#R00447\|Maisels et al. 2013]]
	\|		\|
	\|CMR0028, CMR0029, CMR0123		\|CMR0028, CMR0029<div class="mw-collapsible mw-collapsed" data-expandtext="+1 more" data-collapsetext="less">CMR0123</div>
	\|-		\|-
	\|''Gorilla gorilla gorilla''		\|''Gorilla gorilla gorilla''
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	\|[[#R00447\|Maisels et al. 2013]]		\|[[#R00447\|Maisels et al. 2013]]
	\|		\|
	\|CMR0028, CMR0029, CMR0123		\|CMR0028, CMR0029<div class="mw-collapsible mw-collapsed" data-expandtext="+1 more" data-collapsetext="less">CMR0123</div>
	\|}		\|}

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	<span id="R00445"></span>Benavides, J., Dia, T. P., Rodriguez, V., & Brugière, D. (2016). Dénombrement de la population de grands singes du Parc National de Deng Deng. PNDD-BRLI-EDC.		<span id="R00445"></span>Benavides, J., Dia, T. P., Rodriguez, V., & Brugière, D. (2016). Dénombrement de la population de grands singes du Parc National de Deng Deng. PNDD-BRLI-EDC.

	<span id="R00446"></span>Maisels, F., Ambahe, R., Ambassa, E., Fosso, B., Poumegne, J.-B., & Fotso, R. (2011). Gorilla population in Deng Deng National Park and a logging concession. Gorilla Journal, 42.		<span id="R00446"></span>Maisels, F., Ambahe, R., Ambassa, E., Fosso, B., Poumegne, J.-B., & Fotso, R. (2011). Gorilla population in Deng Deng National Park and a logging concession. Gorilla Journal, 42. [https://www.berggorilla.org/en/home/news-archive/article-view/gorillas-in-deng-deng/ link]

	<span id="R00447"></span>Maisels, F., Strindberg, S., Ambahe, R., Ambassa, E., Yara, C. N., Pouomegne, B., …, & Fotso, R. (2013). Deng Deng National Park and UFA 10–065, Republic of Cameroon. Wildlife and Human Impact Survey 2012. Wildlife Conservation Society (WCS).		<span id="R00447"></span>Maisels, F., Strindberg, S., Ambahe, R., Ambassa, E., Yara, C. N., Pouomegne, B., …, & Fotso, R. (2013). Deng Deng National Park and UFA 10–065, Republic of Cameroon. Wildlife and Human Impact Survey 2012. Wildlife Conservation Society (WCS).

WikiEdit at 20:27, 12 October 2026

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Show changes

WikiEdit at 12:14, 3 September 2026

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← Older revision		Revision as of 08:14, 3 September 2026
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	= Exposure to climate change impacts =		= Exposure to climate change impacts =

	As part of a study on the exposure of African great ape sites to climate change impacts, Kiribou et al. ~~subm.~~ extracted climate data and data on projected extreme climate impact events for the site. Climatological characteristics were derived from observation-based climate data provided by the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP, www.isimip.org). Parameters were calculated as the average across each 30-year period. For 1981-2010, the EWEMBI dataset from ISIMIP2a was used. For the two future periods (2021-2050 and 2071-2099) ISIMIP2b climate data based on four CMIP5 global climate models were used. For future projections, two Representative Concentration Pathways (RCP) were used. RCP 2.6 is a scenario with strong mitigation measures in which global temperatures would likely rise below 2C. RCP 6.0 is a scenario with medium emissions in which global temperatures would likely rise up to 3C by 2100. For the number of days with heavy precipitation events, the 98th percentile of all precipitation days (>1mm/d) was calculated for the 1979-2013 reference period as a threshold for a heavy precipitation event. Then, for each year, the number of days above that threshold was derived. The figures on temperature and precipitation anomaly show the deviation from the mean temperature and mean precipitation for the 1979-2013 reference period.		As part of a study on the exposure of African great ape sites to climate change impacts, Kiribou et al. (2024) extracted climate data and data on projected extreme climate impact events for the site. Climatological characteristics were derived from observation-based climate data provided by the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP, www.isimip.org). Parameters were calculated as the average across each 30-year period. For 1981-2010, the EWEMBI dataset from ISIMIP2a was used. For the two future periods (2021-2050 and 2071-2099) ISIMIP2b climate data based on four CMIP5 global climate models were used. For future projections, two Representative Concentration Pathways (RCP) were used. RCP 2.6 is a scenario with strong mitigation measures in which global temperatures would likely rise below 2C. RCP 6.0 is a scenario with medium emissions in which global temperatures would likely rise up to 3C by 2100. For the number of days with heavy precipitation events, the 98th percentile of all precipitation days (>1mm/d) was calculated for the 1979-2013 reference period as a threshold for a heavy precipitation event. Then, for each year, the number of days above that threshold was derived. The figures on temperature and precipitation anomaly show the deviation from the mean temperature and mean precipitation for the 1979-2013 reference period.

	The estimated exposure to future extreme climate impact events (crop failure, drought, river flood, wildfire, tropical cyclone, and heatwave) is based on a published dataset by Lange et al. 2020 derived from ISIMIP2b data. The same global climate models and RCPs as described above were used. Within each 30-year period, the number of years with an extreme event and the average proportion of the site affected were calculated (~~see~~ Kiribou et al. ~~subm. for details~~).		The estimated exposure to future extreme climate impact events (crop failure, drought, river flood, wildfire, tropical cyclone, and heatwave) is based on a published dataset by Lange et al. 2020 derived from ISIMIP2b data. The same global climate models and RCPs as described above were used. Within each 30-year period, the number of years with an extreme event and the average proportion of the site affected were calculated (Kiribou et al. 2024).

	'''Table 8. Estimated past and projected climatological characteristics in Deng Deng National Park'''		'''Table 8. Estimated past and projected climatological characteristics in Deng Deng National Park'''

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@@ Line 71: / Line 71: @@
 |Distance sampling
 |Benavides et al. 2016
+|
+|
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 |Deng Deng National Park, south (384 km²)
 |Line transects
 |Distance sampling
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 = References =
-Benavides, J., Dia, T.P., Rodriguez, V. & Brugière, D. (2016). Dénombrement de la population de grands singes du Parc National de Deng Deng. PNDD-BRLI-EDC. <br>
+Benavides, J., Dia, T. P., Rodriguez, V., & Brugière, D. (2016). Dénombrement de la population de grands singes du Parc National de Deng Deng. PNDD-BRLI-EDC. <br>
-Maurice, M. E., Lionel Ebong, E., Fuashi, N. A., Godwill, I. I., & Zeh, A. F. (2019). The ecological impact on the distribution of Pangolins in Deng-Deng National Park, Eastern Region, Cameroon. Global Journal of Ecology, 4(1), 008-014. <br>
-Maisels, F., Ambahe, R., Ambassa, E., Fosso, B., Poumegne, J-B., & Fotso, R. (2011). Gorilla Population in Deng Deng National Park and a Logging Concession. Gorilla Journal 42.<br>
+Maisels, F., Ambahe, R., Ambassa, E., Fosso, B., Poumegne, J.-B., & Fotso, R. (2011). Gorilla population in Deng Deng National Park and a logging concession. Gorilla Journal, 42. <br>
-Maisels, F., Strindberg , S., Ambahe, R., Ambassa, E., Yara, C.N., Pouomegne, B., Fosso, B., Fotso, R. (2013). Deng Deng National Park and UFA 10‐065,  Republic of Cameroon. Wildlife and Human Impact Survey 2012. 37pp. Wildlife Conservation Society. <br>
-WCS (n.d.). WCS Cameroon Deng Deng National Park Project. Online: https://cameroon.wcs.org/Wild-Places/Deng-Deng-National-Park.aspx<br>
+Maisels, F., Strindberg, S., Ambahe, R., Ambassa, E., Yara, C. N., Pouomegne, B., Fosso, B., & Fotso, R. (2013). Deng Deng National Park and UFA 10-065, Republic of Cameroon: Wildlife and human impact survey 2012. Wildlife Conservation Society, 37 pp. <br>

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 !Comments
 !A.P.E.S. database ID
 |-
 |''Gorilla gorilla gorilla''
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 |1.67 (0.84‐3.31)
 |641 (323‐1,273)
 |Deng Deng National Park, south (384 km²)
 |Line transects
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+|
 |-
-|''Pan troglodytes troglodytes'' & ''Gorilla gorilla gorilla''
+|''Pan troglodytes troglodytes''
-|2016
+|2012
+|
 |Deng Deng National Park, south (384 km²)
 |Line transects
 |Distance sampling
-|Benavides et al. 2016
+|Maisels et al. 2013
+|
+|

WikiEdit at 14:42, 25 March 2026

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← Older revision		Revision as of 10:42, 25 March 2026
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	* Key threats to great apes are poaching and illegal logging.		* Key threats to great apes are poaching and illegal logging.
	* The Wildlife Conservation Society implements conservation activities in the area, such as biomonitoring, and environmental education and awareness raising.		* The Wildlife Conservation Society implements conservation activities in the area, such as biomonitoring, and environmental education and awareness raising.






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	!Description		!Description
	!Year of threat		!Year of threat
			\|-
			\|2 Agriculture & aquaculture
			\|2.1 Annual & perennial non-timber crops
			\|Present (unknown severity)
			\|Signs of land clearing for agriculture recorded in a 2016 survey (Benavides et al. 2016).
			\|Ongoing (2016)
	\|-		\|-
	\|4 Transportation & service corridors		\|4 Transportation & service corridors
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	\|Construction of the Lom Pangar dam (WCS n.d.).		\|Construction of the Lom Pangar dam (WCS n.d.).
	\|Ongoing (2021)		\|Ongoing (2021)
	\|-
	~~\|2 Agriculture & aquaculture~~
	~~\|2.1 Annual & perennial non-timber crops~~
	~~\|Present (unknown severity)~~
	~~\|Signs of land clearing for agriculture recorded in a 2016 survey (Benavides et al. 2016).~~
	~~\|Ongoing (2016)~~
	\|}		\|}

WikiEdit at 07:25, 4 February 2026

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	\|The national park was stablished in 2010.		\|The national park was stablished in 2010.
	\|		\|
	\|2010-Ongoing (~~2025~~)		\|2010-Ongoing (2026)
	\|-		\|-
	\|5 Protection & restoration		\|5 Protection & restoration