Difference between revisions of "Ala Forest Reserve"

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<!-- INSTRUCTIONS FOR COMPLETING SITE INFORMATION
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<!-- INSTRUCTIONS FOR UPLOADING SITE INFORMATION
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   3) To make information comparable across wiki pages, keywords must be taken from the list of permitted words, or added to the list of permitted keywords. This is why we use official lists, e.g., IUCN classification lists, in our tables.
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   1) Table structure cannot be changed
 
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   2) Keyword format should not change, i.e. they are comma separated lists, not bullet points or numbered lists.  
 
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   3) Keywords must be taken from the list of permitted words, or added to the list of permitted keywords. A link to the keyword list page is found adjacent
 
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    to the relevant table or keyword list. This ensures that the same keyword always refers to the same concept, e.g. Everybody uses "Industrial mining",  
 
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    rather than several keywords such as "Industrial mining", "Large-scale mining", and "Mining".  
 
 
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[[West Africa]] > [[Nigeria]] > [[Ala Forest Reserve]]
  
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[[Region]] > [[Country]] > [[Site]]
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= Summary = <!-- An overview of the site, with one sentence for each section. May include a site map -->
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<div style="float: right">{{#display_map: height=200px | width=300px | scrollzoom=off | zoom=5 | layers= OpenStreetMap, OpenTopoMap|7.051510, 5.436220~[[Ala Forest Reserve]]~Nigeria-Cameroon chimpanzees}}</div>
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= Summary = <!-- An overview of the site, with a one sentence overview of each of the following sections. can include a site map -->
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* Nigeria-Cameroon chimpanzees (''Pan troglodytes ellioti'') have been present in Ala Forest Reserve.
 +
* Chimpanzees are extinct or nearly extinct at the site.
 +
* The chimpanzee population trend is unknown.
 +
* The site has a total size of 199 km².
 +
* Key threats to chimpanzees are hunting and logging for oil palm, cocoa, and teak plantations.
 +
* Conservation activities not documented.
  
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* Ape taxa present
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= Site characteristics = <!-- A paragraph summary of physical and geographic aspects of the site, and a table of key information -->
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* Ape population size
 
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* Ape population trend
 
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* This site has a total size of XX km².
 
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* Key threats to apes are ...
 
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* Additional information
 
  
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'''Table 1. Basic site information for Ala Forest Reserve'''
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= Site characteristics =
 
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This section includes a paragraph summary of physical and geographic aspects of the site, a brief history of the site and on animals and plants that are known to occur at the site.
 
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'''Table 1: Basic site information for XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="basic-information"
 
{| border="1" cellpadding="5" cellspacing="0" class="basic-information"
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| Area             <!-- Please include units: km2/ha e.g 200ha   -->
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| Area <!-- Please include units: km2/ha e.g 200ha -->
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|
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|199 km²
 
|-
 
|-
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| Coordinates
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|Coordinates
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|
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|7.051510, 5.436220
 
|-
 
|-
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| Designation     <!-- National Park, Nature Reserve, etc.  -->
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|Designation
−
|
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|Forest Reserve
 
|-
 
|-
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|Habitat types   <!-- List IUCN Habitat Classification 3.0 categories present (Without number), see link below -->
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|Habitat types <!-- List IUCN Habitat Classification 3.0 categories present (without number), see link below -->
−
|
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|Arable land, plantations, subtropical/tropical heavily degraded forest, subtropical/tropical moist lowland forest
 
|}
 
|}
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[http://www.unitar.org/hiroshima/sites/unitar.org.hiroshima/files/Annex%201%20-%20IUCN%20Classification%20Schemes.pdf IUCN habitat categories]   [[Site designations]]
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[https://www.iucnredlist.org/resources/habitat-classification-scheme IUCN habitat categories] [[Site designations]]
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<br>
 
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= Ape status = <!-- a text overview of ape status (population sizes, trends etc), followed by a table of specific surveys and results -->
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= Ape status = <!--An overview of ape population status (population sizes, trends, etc.), followed by a table of specific surveys and results -->
  
 +
Chimpanzees are extinct or nearly extinct in Ala Forest Reserve. During a 2006 survey, no chimpanzees, nor signs of chimpanzees, were encountered (Greengrass 2006).
  
−
 
+
'''Table 2. Ape population estimates in Ala Forest Reserve'''
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This section includes a brief summary of the survey history, the most recent abundance estimate, date of the estimate, and, if available, the population trend (if explicitely stated in a report/paper).
 
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−
 
 
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'''Table 2: Ape population estimates in XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="population-estimate-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="population-estimate-table"
 
! Species
 
! Species
 
! Year
 
! Year
−
! Abundance estimate (95% confidence interval)
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! Abundance estimate (95% CI)
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! Density estimate (per km²)
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! Density estimate [ind./ km²] (95% CI)
 
! Encounter rate (nests/km)
 
! Encounter rate (nests/km)
 
! Area
 
! Area
Line 72: Line 53:
 
! A.P.E.S. database ID
 
! A.P.E.S. database ID
 
|-
 
|-
 +
|''Pan troglodytes ellioti''
 +
|2006
 
|
 
|
 
|
 
|
−
|
+
|0
−
|
+
|Ala Forest Reserve
−
|
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|Index survey (reconnaissance walk)
−
|
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|Greengrass 2006
−
|
 
−
|
 
 
|
 
|
 
|
 
|
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= Threats =    <!-- a text overview of threats, followed by a table of key threats -->
 
= Threats =    <!-- a text overview of threats, followed by a table of key threats -->
  
 +
The northern half of the reserve is dominated by teak, oil palm, and cocoa plantations (Greengrass 2006). In the southern half of the reserve, even though the forest seems to be in a better condition, logging pressure is very high and large mammals are very scarce (Greengrass 2006).
  
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This sections describes threats at the site, particularly those relevant for apes and thereby provides context for the threats listed in the table below.
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'''Table 3. Threats to apes in Ala Forest Reserve'''
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−
 
 
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'''Table 3: Threats to apes in XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="threats-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="threats-table"
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!align="left"|Category <!-- Do not change threat categories -->
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!align="left"|Category <!-- PLEASE DO NOT CHANGE THE THREAT CATEGORIES -->
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!Specific threats   <!-- For specific threats, please use list of comma separated keywords from the list linked below -->
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!Specific threats <!-- For specific threats, please use list of comma separated keywords from the IUCN list linked below -->
−
!Threat level       <!-- For threat level, please use keywords: unknown, low, high -->
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!Threat level <!-- For threat level, please use keywords: low, medium, high, present, absent, unknown-->
−
!Quantified severity <!-- e.g., encounter rate, number of miners etc. (with reference)-->
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!Quantified severity <!-- Enter any available quantification of the threat, e.g., the proportion of the area affected by the threat, hunting sign encounter rates-->
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!Description         <!-- You can add descriptive information here -->
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!Description <!-- Add descriptive information -->
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!Year of threat     <!-- if ongoing or unknown add year of reference in brackets-->
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!Year of threat <!-- Enter specific year(s), “ongoing”, or “unknown”. If the threat is ongoing, please add the year of reference in parentheses -->
 
|-
 
|-
 
|1. Residential & commercial development
 
|1. Residential & commercial development
 
|
 
|
−
|
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|Unknown
 
|
 
|
 
|
 
|
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|-
 
|-
 
|2. Agriculture & aquaculture
 
|2. Agriculture & aquaculture
 +
|2.1 Annual & perennial non-timber crops
 +
|High
 
|
 
|
 +
|Oil palm and cocoa plantations in the northern half of the reserve (Greengrass 2006)
 +
|Ongoing (2006)
 +
|-
 
|
 
|
 +
|2.2 Wood & pulp plantations
 +
|High
 
|
 
|
−
|
+
|Land cleared for teak plantations (Greengrass 2006)
−
|
+
|Ongoing (2006)
 
|-
 
|-
 
|3. Energy production & mining
 
|3. Energy production & mining
 
|
 
|
−
|
+
|Unknown
 
|
 
|
 
|
 
|
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|-
 
|-
 
|4. Transportation & service corridors
 
|4. Transportation & service corridors
 +
|4.1 Roads & railroads
 +
|High
 
|
 
|
−
|
+
|A road crosses the reserve from north to south (Greengrass 2006)
−
|
+
|Ongoing (2006)
−
|
 
−
|
 
 
|-
 
|-
 
|5. Biological resource use
 
|5. Biological resource use
 +
|5.1 Hunting & collecting terrestrial animals
 +
|High
 
|
 
|
 +
|Hunter trails and a large number of discarded cartridges were found in the southern part of the reserve, where chimpanzees were last seen (Greengrass 2006)
 +
|Ongoing (2006)
 +
|-
 
|
 
|
 +
|5.3 Logging & wood harvesting
 +
|High
 
|
 
|
−
|
+
|Logging pressure is high in the area were chimpanzees were last seen (Greengrass 2006)
−
|
+
|Ongoing (2006)
 
|-
 
|-
−
|6. Human intrusions & disturbance
+
|6. Human intrusion & disturbance
−
|
 
 
|
 
|
 +
|Unknown
 
|
 
|
 
|
 
|
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|7. Natural system modifications
 
|7. Natural system modifications
 
|
 
|
−
|
+
|Unknown
 
|
 
|
 
|
 
|
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|8. Invasive & other problematic species, genes, diseases
 
|8. Invasive & other problematic species, genes, diseases
 
|
 
|
−
|
+
|Unknown
 
|
 
|
 
|
 
|
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|9. Pollution
 
|9. Pollution
 
|
 
|
−
|
+
|Unknown
 
|
 
|
 
|
 
|
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|10. Geological Events
 
|10. Geological Events
 
|
 
|
−
|
+
|Absent
 
|
 
|
 
|
 
|
 
|
 
|
 
|-
 
|-
−
|11. Climate change & severe weather
+
| 11. Climate change & severe weather
−
|
 
 
|
 
|
 +
|Unknown
 
|
 
|
 
|
 
|
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|12. Other options
 
|12. Other options
 
|
 
|
−
|
+
|Unknown
 
|
 
|
 
|
 
|
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[https://www.iucnredlist.org/resources/threat-classification-scheme IUCN Threats list]
 
[https://www.iucnredlist.org/resources/threat-classification-scheme IUCN Threats list]
  
 +
= Conservation activities =      <!-- A summary of the conservation activities, followed by a table of key activities -->
  
−
 
+
'''Table 4. Conservation activities in Ala Forest Reserve'''
−
= Conservation activities =      <!-- a text overview of conservation activities, followed by a table of key activities -->
 
−
 
 
−
 
 
−
This sections describes conservation interventions implemented at the site, including information on which organizations are implementing them and thereby provides context for the conservation activities listed in the table below.
 
−
 
 
−
 
 
−
 
 
−
'''Table 4: Conservation activities in XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="conservation-actions-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="conservation-actions-table"
−
!align="left"|Category <!-- Do not change threat categories -->
+
!align="left"|Category <!-- PLEASE DO NOT CHANGE THE CATEGORIES -->
−
!Specific activity   <!-- For specific threats, please use list of comma separated keywords from the list linked below -->
+
!Specific activity <!-- For specific threats, please use list from the list linked below, OR enter “Not reported” -->
−
!Description         <!-- You can add descriptive information here -->
+
!Description <!-- Add descriptive information -->
−
!Year of activity         <!-- if ongoing or unknown add year of reference in brackets -->
+
!Year of activity <!-- Add descriptive information -->
 
|-
 
|-
 
|1. Residential & commercial development
 
|1. Residential & commercial development
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|2. Agriculture & aquaculture
 
|2. Agriculture & aquaculture
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|3. Energy production & mining
 
|3. Energy production & mining
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|4. Transportation & service corridors
 
|4. Transportation & service corridors
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|5. Biological resource use
 
|5. Biological resource use
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
−
|6. Human intrusions & disturbance
+
|6. Human intrusion & disturbance
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|7. Natural system modifications
 
|7. Natural system modifications
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|8. Invasive & other problematic species, genes, diseases
 
|8. Invasive & other problematic species, genes, diseases
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|9. Pollution
 
|9. Pollution
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|10. Education & Awareness  
 
|10. Education & Awareness  
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|11. Habitat Protection
 
|11. Habitat Protection
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|12. Species Management
 
|12. Species Management
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|13. Livelihood; Economic & Other Incentives  
 
|13. Livelihood; Economic & Other Incentives  
−
|
+
|Not reported
 
|
 
|
 
|
 
|
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[[Conservation activities list (Junker et al. 2017)]]
 
[[Conservation activities list (Junker et al. 2017)]]
  
 +
= Challenges = <!-- Overview of challenges in ape conservation -->
  
−
 
+
'''Table 5. Challenges reported for Ala Forest Reserve'''
−
= Impediments = <!-- Overview of impediments to ape conservation -->
+
{| border="1" cellpadding="5" cellspacing="0" class="challenges-table"
−
 
+
!align="left"|Challenge <!-- Do not change categories -->
−
 
+
!Source <!-- Source for challenge mentioned -->
−
Description of impediments that may hamper conservation activities.
+
|-
−
 
+
|Corruption
−
 
+
|Greengrass 2006
−
'''Table 5: Impediments reported for XXXX'''
+
|-
−
{| border="1" cellpadding="5" cellspacing="0" class="impediments-table"
+
|Lack of financial means
−
!align="left"|Impediment  <!-- Do not change categories -->
+
|Greengrass 2006
−
!Source   <!-- source for impediment mentioned -->
 
 
|-
 
|-
−
|
+
|Lack of law enforcement
−
|
+
|Greengrass 2006
 
|-
 
|-
 
|}
 
|}
−
 
−
 
  
 
= Research activities = <!-- Overview of research activities -->
 
= Research activities = <!-- Overview of research activities -->
−
 
+
No information on research activities has been documented.
−
 
 
−
Short description of past and ongoing research activities at the site.
 
−
 
 
  
 
===Documented behaviours===  <!-- List of any behaviours observed at the site, including citations -->
 
===Documented behaviours===  <!-- List of any behaviours observed at the site, including citations -->
  
−
'''Table 6: Ape behaviors reported for XXXX'''
+
'''Table 6. Ape behaviors reported for Ala Forest Reserve'''
 
{| border="1" cellpadding="5" cellspacing="0" class="behaviors-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="behaviors-table"
−
!align="left"|Behavior <!-- Do not change categories -->
+
!align="left"|Behavior
−
!Source   <!-- source for behavior -->
+
!Source
 
|-
 
|-
 +
|Not reported
 
|
 
|
 +
|-
 +
|}
 +
 +
= 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. (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 2°C. RCP 6.0 is a scenario with medium emissions in which global temperatures would likely rise up to 3°C 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 (Kiribou et al. 2024).
 +
 +
'''Table 7. Estimated past and projected climatological characteristics in Ala Forest Reserve'''
 +
{| border='1' cellpadding='5' cellspacing='0' class='EE-table'
 
|
 
|
 +
|'''1981-2010'''
 +
|'''2021-2050, RCP 2.6'''
 +
|'''2021-2050, RCP 6.0'''
 +
|'''2071-2099, RCP 2.6'''
 +
|'''2071-2099, RCP 6.0'''
 +
|-
 +
|Mean temperature [°C]
 +
|26.3
 +
|27.4
 +
|27.2
 +
|27.6
 +
|28.6
 +
|-
 +
|Annual precipitation [mm]
 +
|1679
 +
|1715
 +
|1732
 +
|1687
 +
|1757
 +
|-
 +
|Max no. consecutive dry days (per year)
 +
|36.7
 +
|43.1
 +
|42.5
 +
|42
 +
|44.4
 +
|-
 +
|No. days with heavy precipitation (per year)
 +
|6.2
 +
|9.1
 +
|9
 +
|9.4
 +
|10.4
 
|-
 
|-
 
|}
 
|}
  
  
−
===Relevant datasets===
+
'''Table 8. Projected exposure of apes to extreme climate impact events in Ala Forest Reserve'''
−
[http://apesportal.eva.mpg.de/database/archiveMap A.P.E.S Portal]
+
{| border='1' cellpadding='5' cellspacing='0' class='EE-table'
−
 
+
|
−
<br>
+
|'''No. of years with event (2021-2050, RCP 2.6)'''
 +
|'''% of site exposed (2021-2050, RCP 2.6)'''
 +
|'''No. of years with event (2021-2050, RCP 6.0)'''
 +
|'''% of site exposed (2021-2050, RCP 6.0)'''
 +
|'''No. of years with event (2070-2099, RCP 2.6)'''
 +
|'''% of site exposed (2070-2099, RCP 2.6)'''
 +
|'''No. of years with event (2070-2099, RCP 6.0)'''
 +
|'''% of site exposed (2070-2099, RCP 6.0)'''
 +
|-
 +
|Crop failure
 +
|2.5
 +
|2.56
 +
|2.5
 +
|2.74
 +
|1
 +
|2.95
 +
|4.5
 +
|2.95
 +
|-
 +
|Drought
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|-
 +
|Heatwave
 +
|6.5
 +
|100
 +
|7.5
 +
|100
 +
|5.5
 +
|100
 +
|7.5
 +
|100
 +
|-
 +
|River flood
 +
|1.5
 +
|0.57
 +
|1.5
 +
|0.02
 +
|0.5
 +
|0.74
 +
|3
 +
|1.87
 +
|-
 +
|Tropical cyclone
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|0
 +
|-
 +
|Wildfire
 +
|30
 +
|0.47
 +
|30
 +
|0.47
 +
|29
 +
|0.47
 +
|29
 +
|0.46
 +
|-
 +
|}
  
 +
<div><ul><li style="display: inline-block; vertical-align: top;"> [[File:PrecipAnomaly_Ala FR.png | 450px | thumb| right | Precipitation anomaly in Ala Forest Reserve]] </li><li style="display: inline-block; vertical-align: top;"> [[File: TempAnomaly_Ala FR.png | 450px | thumb| right | Temperature anomaly in Ala Forest Reserve]] </li></ul></div>
  
 
= References =
 
= References =
−
 
+
Greengrass, E.J. (2006). A survey of chimpanzees in south-west Nigeria. Report to the NCF-WCS Biodiversity Research Programme. <br>
 +
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.<br>
  
 
<br>
 
<br>
−
'''Page completed by:'''XXXX '''   Date:''' DD/MM/YY  <br>
+
'''Page completed by: '''A.P.E.S. Wiki Team''' Date:''' 19/11/2020 <!-- If you don't want to add your name, you can add "A.P.E.S. Wiki team" -->
−
 
 
−
<i>Please consider whether any information you would like to add is sensitive and could be misused to harm apes. Please do not add such information. If unsure, you can contact the Wiki manager (contact details on start page) for clarification.</i>
 
−
<br><br>
 

Latest revision as of 10:52, 18 November 2024

West Africa > Nigeria > Ala Forest Reserve

Summary

Loading map...
  • Nigeria-Cameroon chimpanzees (Pan troglodytes ellioti) have been present in Ala Forest Reserve.
  • Chimpanzees are extinct or nearly extinct at the site.
  • The chimpanzee population trend is unknown.
  • The site has a total size of 199 km².
  • Key threats to chimpanzees are hunting and logging for oil palm, cocoa, and teak plantations.
  • Conservation activities not documented.

Site characteristics

Table 1. Basic site information for Ala Forest Reserve

Area 199 km²
Coordinates 7.051510, 5.436220
Designation Forest Reserve
Habitat types Arable land, plantations, subtropical/tropical heavily degraded forest, subtropical/tropical moist lowland forest

IUCN habitat categories Site designations

Ape status

Chimpanzees are extinct or nearly extinct in Ala Forest Reserve. During a 2006 survey, no chimpanzees, nor signs of chimpanzees, were encountered (Greengrass 2006).

Table 2. Ape population estimates in Ala Forest Reserve

Species Year Abundance estimate (95% CI) Density estimate [ind./ km²] (95% CI) Encounter rate (nests/km) Area Method Source Comments A.P.E.S. database ID
Pan troglodytes ellioti 2006 0 Ala Forest Reserve Index survey (reconnaissance walk) Greengrass 2006

Threats

The northern half of the reserve is dominated by teak, oil palm, and cocoa plantations (Greengrass 2006). In the southern half of the reserve, even though the forest seems to be in a better condition, logging pressure is very high and large mammals are very scarce (Greengrass 2006).

Table 3. Threats to apes in Ala Forest Reserve

Category Specific threats Threat level Quantified severity Description Year of threat
1. Residential & commercial development Unknown
2. Agriculture & aquaculture 2.1 Annual & perennial non-timber crops High Oil palm and cocoa plantations in the northern half of the reserve (Greengrass 2006) Ongoing (2006)
2.2 Wood & pulp plantations High Land cleared for teak plantations (Greengrass 2006) Ongoing (2006)
3. Energy production & mining Unknown
4. Transportation & service corridors 4.1 Roads & railroads High A road crosses the reserve from north to south (Greengrass 2006) Ongoing (2006)
5. Biological resource use 5.1 Hunting & collecting terrestrial animals High Hunter trails and a large number of discarded cartridges were found in the southern part of the reserve, where chimpanzees were last seen (Greengrass 2006) Ongoing (2006)
5.3 Logging & wood harvesting High Logging pressure is high in the area were chimpanzees were last seen (Greengrass 2006) Ongoing (2006)
6. Human intrusion & disturbance Unknown
7. Natural system modifications Unknown
8. Invasive & other problematic species, genes, diseases Unknown
9. Pollution Unknown
10. Geological Events Absent
11. Climate change & severe weather Unknown
12. Other options Unknown

IUCN Threats list

Conservation activities

Table 4. Conservation activities in Ala Forest Reserve

Category Specific activity Description Year of activity
1. Residential & commercial development Not reported
2. Agriculture & aquaculture Not reported
3. Energy production & mining Not reported
4. Transportation & service corridors Not reported
5. Biological resource use Not reported
6. Human intrusion & disturbance Not reported
7. Natural system modifications Not reported
8. Invasive & other problematic species, genes, diseases Not reported
9. Pollution Not reported
10. Education & Awareness Not reported
11. Habitat Protection Not reported
12. Species Management Not reported
13. Livelihood; Economic & Other Incentives Not reported

Conservation activities list (Junker et al. 2017)

Challenges

Table 5. Challenges reported for Ala Forest Reserve

Challenge Source
Corruption Greengrass 2006
Lack of financial means Greengrass 2006
Lack of law enforcement Greengrass 2006

Research activities

No information on research activities has been documented.

Documented behaviours

Table 6. Ape behaviors reported for Ala Forest Reserve

Behavior Source
Not reported

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. (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 2°C. RCP 6.0 is a scenario with medium emissions in which global temperatures would likely rise up to 3°C 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 (Kiribou et al. 2024).

Table 7. Estimated past and projected climatological characteristics in Ala Forest Reserve

1981-2010 2021-2050, RCP 2.6 2021-2050, RCP 6.0 2071-2099, RCP 2.6 2071-2099, RCP 6.0
Mean temperature [°C] 26.3 27.4 27.2 27.6 28.6
Annual precipitation [mm] 1679 1715 1732 1687 1757
Max no. consecutive dry days (per year) 36.7 43.1 42.5 42 44.4
No. days with heavy precipitation (per year) 6.2 9.1 9 9.4 10.4


Table 8. Projected exposure of apes to extreme climate impact events in Ala Forest Reserve

No. of years with event (2021-2050, RCP 2.6) % of site exposed (2021-2050, RCP 2.6) No. of years with event (2021-2050, RCP 6.0) % of site exposed (2021-2050, RCP 6.0) No. of years with event (2070-2099, RCP 2.6) % of site exposed (2070-2099, RCP 2.6) No. of years with event (2070-2099, RCP 6.0) % of site exposed (2070-2099, RCP 6.0)
Crop failure 2.5 2.56 2.5 2.74 1 2.95 4.5 2.95
Drought 0 0 0 0 0 0 0 0
Heatwave 6.5 100 7.5 100 5.5 100 7.5 100
River flood 1.5 0.57 1.5 0.02 0.5 0.74 3 1.87
Tropical cyclone 0 0 0 0 0 0 0 0
Wildfire 30 0.47 30 0.47 29 0.47 29 0.46
  • Precipitation anomaly in Ala Forest Reserve
  • Temperature anomaly in Ala Forest Reserve

References

Greengrass, E.J. (2006). A survey of chimpanzees in south-west Nigeria. Report to the NCF-WCS Biodiversity Research Programme.
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.


Page completed by: A.P.E.S. Wiki Team Date: 19/11/2020

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