Difference between revisions of "Djoua-Zadie Forest"
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(Created page with "Central Africa > Gabon > Djoua-Zadie Forest '''[https://wiki-iucnapesportal-org.translate.goog/index.php/Djoua-Zadie_Forest?_x_tr_sl=auto&_x_tr_tl=fr&_x_tr_hl=en&...") |
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= Summary = | = Summary = | ||
| − | <div style="float: right">{{#display_map: height=190px | width=300px | scrollzoom=off | zoom=5 | layers= OpenStreetMap, OpenTopoMap|1.1080, 13.556~[[Djoua-Zadie Forest]]~Pan troglodytes troglodytes | + | <div style="float: right">{{#display_map: height=190px | width=300px | scrollzoom=off | zoom=5 | layers= OpenStreetMap, OpenTopoMap|1.1080, 13.556~[[Djoua-Zadie Forest]]~'Pan troglodytes troglodytes'', ''Gorilla gorilla gorilla''}}</div> |
| − | + | * Central chimpanzees (''Pan troglodytes troglodytes'') & western lowland gorillas (''Gorilla gorilla gorilla'') are present in Djoua-Zadie Forest. | |
| − | + | * In 2016 it was estimated that 2,217 chimpanzees and gorillas occur in the area. | |
| − | + | * The population trend is unknown. | |
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= Site characteristics = | = Site characteristics = | ||
| − | + | Yeno & Ngoran (2016) suggest that the Djoua-Zadié Forest should undergo a change in its conservation designation. The authors propose to the Gabonese government to reclassify a portion of the forest as a protected area in order to establish a vital corridor for large mammal populations between the Odzala-Kokoua NP (Congo) and Minkébé National Park (Gabon) as this will significantly contribute to regional biodiversity conservation. | |
'''Table 1. Basic site information for Djoua-Zadie Forest''' | '''Table 1. Basic site information for Djoua-Zadie Forest''' | ||
{| border="1" cellpadding="5" cellspacing="0" class="Site_characteristics-table" | {| border="1" cellpadding="5" cellspacing="0" class="Site_characteristics-table" | ||
|Species | |Species | ||
| − | |Pan troglodytes troglodytes | + | |'Pan troglodytes troglodytes'', ''Gorilla gorilla gorilla'' |
|- | |- | ||
|Area | |Area | ||
| − | | | + | |5,444 km² |
|- | |- | ||
|Coordinates | |Coordinates | ||
| Line 53: | Line 46: | ||
!Species | !Species | ||
!Year | !Year | ||
| + | !Occurrence | ||
| + | !Encounter or vistation rate (nests/km; ind/day) | ||
| + | !Density estimate [ind./ km²] (95% CI) | ||
!Abundance estimate (95% CI) | !Abundance estimate (95% CI) | ||
| − | ! | + | !Survey area |
| − | ! | + | !Sampling method |
| − | ! | + | !Analytical framework |
| − | |||
!Source | !Source | ||
!Comments | !Comments | ||
!A.P.E.S. database ID | !A.P.E.S. database ID | ||
|- | |- | ||
| − | |Pan troglodytes troglodytes | + | |'Gorilla gorilla gorilla'' & ''Pan troglodytes troglodytes'' |
|2015-2016 | |2015-2016 | ||
| − | | | + | |Present |
| − | + | |1.12 | |
| − | |1.12 | + | |0.407 |
| − | | | + | |2,217 (1,390-3,537) |
| − | + | |Djoua-Zadie Forest | |
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| − | |||
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| − | |2,217 (1,390 | ||
| − | | | ||
| − | |||
| − | |||
|Line transects & recces | |Line transects & recces | ||
| − | |Yeno &Ngoran | + | |Distance sampling |
| + | |Yeno & Ngoran 2016 | ||
|The abundance , as well as the nest encounter rate, of chimpanzees and gorillas was merged | |The abundance , as well as the nest encounter rate, of chimpanzees and gorillas was merged | ||
| | | | ||
| Line 96: | Line 82: | ||
!Description | !Description | ||
!Year of threat | !Year of threat | ||
| + | |- | ||
| + | |3 Energy production & mining | ||
| + | |3.2.1 Industrial mining | ||
| + | |Low (up to 30% of population affected) | ||
| + | |The area holds considerable mining potential, with notable iron deposits such as Belinga and Boka Boka. To address the ecological impact of these mining activities, it is proposed that environmental offsets be implemented. These would include the creation of conservation areas equipped with strong anti-poaching measures, ensuring effective biodiversity protection while supporting industrial development. | ||
| + | |2015-Unknown | ||
|- | |- | ||
|5 Biological resource use | |5 Biological resource use | ||
|5.1 Hunting & collecting terrestrial animals | |5.1 Hunting & collecting terrestrial animals | ||
|Medium (30-70% of population affected) | |Medium (30-70% of population affected) | ||
| − | | | + | |Since the Djoua-Zadié Forest is not currently covered by the ANPN's (National Agency for National Parks) anti-poaching patrols, it is crucial for the ANPN and the Ministry of Wildlife to urgently develop a strategy for patrolling this area. Utilizing the rivers as a patrol route could be an effective approach to enhance the protection of this vulnerable zone (Yeno and Ngoran, 2016) |
|2015-Ongoing | |2015-Ongoing | ||
|- | |- | ||
| Line 113: | Line 105: | ||
|Present (unknown severity) | |Present (unknown severity) | ||
|A variety of human activities occur both within the forest and in its surrounding areas, including hunting, fishing, farming, forestry, and artisanal mining. These practices reflect the diverse ways in which people interact with and utilize the landscape (Yeno & Ngoran, 2016) | |A variety of human activities occur both within the forest and in its surrounding areas, including hunting, fishing, farming, forestry, and artisanal mining. These practices reflect the diverse ways in which people interact with and utilize the landscape (Yeno & Ngoran, 2016) | ||
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|2015-Unknown | |2015-Unknown | ||
|- | |- | ||
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|A variety of human activities occur both within the forest and in its surrounding areas, including hunting, fishing, farming, forestry, and artisanal mining. These practices reflect the diverse ways in which people interact with and utilize the landscape (Yeno & Ngoran, 2016) | |A variety of human activities occur both within the forest and in its surrounding areas, including hunting, fishing, farming, forestry, and artisanal mining. These practices reflect the diverse ways in which people interact with and utilize the landscape (Yeno & Ngoran, 2016) | ||
|2015-Unknown | |2015-Unknown | ||
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|} | |} | ||
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= Challenges = | = Challenges = | ||
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|4 Institutional support | |4 Institutional support | ||
|4.3 Lack of protected area status | |4.3 Lack of protected area status | ||
| − | |Yeno & Ngoran | + | |Yeno & Ngoran 2016 |
| − | |2015- | + | |2015-Unknown |
|- | |- | ||
|4 Institutional support | |4 Institutional support | ||
|4.1 Lack of law enforcement | |4.1 Lack of law enforcement | ||
| − | |Yeno & Ngoran | + | |Yeno & Ngoran 2016 |
| − | |2015- | + | |2015-Unknown |
|} | |} | ||
| Line 190: | Line 154: | ||
|4 Institutional support | |4 Institutional support | ||
|4.3 Strong transboundary cooperation | |4.3 Strong transboundary cooperation | ||
| − | |Yeno & Ngoran | + | |Yeno & Ngoran 2016 |
|2015-2024 | |2015-2024 | ||
|- | |- | ||
|5 Ecological context | |5 Ecological context | ||
|5.1 Ecological characteristics (e.g. terrain) conducive to conservation | |5.1 Ecological characteristics (e.g. terrain) conducive to conservation | ||
| − | |Yeno&Ngoran | + | |Yeno & Ngoran 2016 |
|2015-2024 | |2015-2024 | ||
|} | |} | ||
Latest revision as of 09:50, 18 March 2025
Central Africa > Gabon > Djoua-Zadie Forest
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Summary
- Central chimpanzees (Pan troglodytes troglodytes) & western lowland gorillas (Gorilla gorilla gorilla) are present in Djoua-Zadie Forest.
- In 2016 it was estimated that 2,217 chimpanzees and gorillas occur in the area.
- The population trend is unknown.
Site characteristics
Yeno & Ngoran (2016) suggest that the Djoua-Zadié Forest should undergo a change in its conservation designation. The authors propose to the Gabonese government to reclassify a portion of the forest as a protected area in order to establish a vital corridor for large mammal populations between the Odzala-Kokoua NP (Congo) and Minkébé National Park (Gabon) as this will significantly contribute to regional biodiversity conservation.
Table 1. Basic site information for Djoua-Zadie Forest
| Species | 'Pan troglodytes troglodytes, Gorilla gorilla gorilla |
| Area | 5,444 km² |
| Coordinates | Lat: 1.1080 , Lon: 13.556 |
| Type of site | Non-protected area |
| Habitat types | Subtropical/tropical dry forest, Subtropical/tropical moist lowland forest, Subtropical/tropical swamp forest |
| Type of governance |
IUCN habitat categories Site designations
Ape status
Table 2. Ape population estimates reported for Djoua-Zadie Forest
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 'Gorilla gorilla gorilla & Pan troglodytes troglodytes | 2015-2016 | Present | 1.12 | 0.407 | 2,217 (1,390-3,537) | Djoua-Zadie Forest | Line transects & recces | Distance sampling | Yeno & Ngoran 2016 | The abundance , as well as the nest encounter rate, of chimpanzees and gorillas was merged |
Threats
Table 3. Threats to apes reported for Djoua-Zadie Forest
| Category | Specific threats | Threat level | Description | Year of threat |
|---|---|---|---|---|
| 3 Energy production & mining | 3.2.1 Industrial mining | Low (up to 30% of population affected) | The area holds considerable mining potential, with notable iron deposits such as Belinga and Boka Boka. To address the ecological impact of these mining activities, it is proposed that environmental offsets be implemented. These would include the creation of conservation areas equipped with strong anti-poaching measures, ensuring effective biodiversity protection while supporting industrial development. | 2015-Unknown |
| 5 Biological resource use | 5.1 Hunting & collecting terrestrial animals | Medium (30-70% of population affected) | Since the Djoua-Zadié Forest is not currently covered by the ANPN's (National Agency for National Parks) anti-poaching patrols, it is crucial for the ANPN and the Ministry of Wildlife to urgently develop a strategy for patrolling this area. Utilizing the rivers as a patrol route could be an effective approach to enhance the protection of this vulnerable zone (Yeno and Ngoran, 2016) | 2015-Ongoing |
| 5 Biological resource use | 5.3.2 Commercial logging | Medium (30-70% of population affected) | Logging companies operating in the area, which is located within the ecological corridor connecting Odzala-Kokoua and Minkébé National Parks must adopt FSC (Forest Stewardship Council) standards. These guidelines promote sustainable forest management, ensuring resource extraction is carried out responsibly while preserving the integrity of these untouched areas and maintaining ecological connectivity. | 2015-Unknown |
| 2 Agriculture & aquaculture | 2.1.1 Shifting agriculture | Present (unknown severity) | A variety of human activities occur both within the forest and in its surrounding areas, including hunting, fishing, farming, forestry, and artisanal mining. These practices reflect the diverse ways in which people interact with and utilize the landscape (Yeno & Ngoran, 2016) | 2015-Unknown |
| 3 Energy production & mining | 3.2.3 Artisanal mining | Present (unknown severity) | A variety of human activities occur both within the forest and in its surrounding areas, including hunting, fishing, farming, forestry, and artisanal mining. These practices reflect the diverse ways in which people interact with and utilize the landscape (Yeno & Ngoran, 2016) | 2015-Unknown |
Conservation activities
Challenges
Table 5. Challenges reported for Djoua-Zadie Forest
| Challenges | Specific challenges | Source | Year(s) |
|---|---|---|---|
| 4 Institutional support | 4.3 Lack of protected area status | Yeno & Ngoran 2016 | 2015-Unknown |
| 4 Institutional support | 4.1 Lack of law enforcement | Yeno & Ngoran 2016 | 2015-Unknown |
Enablers
Table 6. Enablers reported for Djoua-Zadie Forest
| Enablers | Specific enablers | Source | Year(s) |
|---|---|---|---|
| 4 Institutional support | 4.3 Strong transboundary cooperation | Yeno & Ngoran 2016 | 2015-2024 |
| 5 Ecological context | 5.1 Ecological characteristics (e.g. terrain) conducive to conservation | Yeno & Ngoran 2016 | 2015-2024 |
Research activities
Documented behaviours
Table 7. Behaviours documented for Djoua-Zadie Forest
| Behavior | Source |
|---|---|
| Not reported |
Exposure to climate change impacts
External links
Relevant datasets
References
Yeno, S.L. and Ngoran P.K (2016). Rapport d'inventaire de grands et moyens mammifères dans la forêt de Djoua-Zadié, Gabon. WWF report.
Page created by: Tene Sop Date: 2024-11-28 12:23:00