Journal of Ecology and The Natural Environment
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Article Number - AD3B10955245


Vol.9(11), pp. 177-184 , December 2017
DOI: 10.5897/JENE2017.0652
ISSN: 2006-9847



Full Length Research Paper

Assessing the impact of seasonality on Cross River Gorilla Nest Construction at Kagwene Gorilla Sanctuary, North-West Cameroon



Nkwatoh Athanasius Fuashi
  • Nkwatoh Athanasius Fuashi
  • Department of Environmental Science, University of Buea, Cameroon.
  • Google Scholar
Akenji Lesly Nji
  • Akenji Lesly Nji
  • Wildlife Conservation Society, Takamanda-Mone Landscape Project, Cameroon.
  • Google Scholar
Melle Maurice Ekane
  • Melle Maurice Ekane
  • Department of Environmental Science, University of Buea, Cameroon.
  • Google Scholar
Andrew Fowler
  • Andrew Fowler
  • Wildlife Conservation Society, Takamanda-Mone Landscape Project, Cameroon.
  • Google Scholar
Romanus Ikfuingei
  • Romanus Ikfuingei
  • World Wide Fund for Nature, Mount Cameroon National Park, Cameroon.
  • Google Scholar







 Received: 08 June 2017  Accepted: 27 July 2017  Published: 31 December 2017

Copyright © 2017 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


The Cross River gorilla, one of the most endangered subspecies of western gorilla (Gorilla gorilla) is endemic to 12 to 14 sites at the Cameroon-Nigeria border, where it is facing enormous threats from habitat loss, bush meat trade and minor climate changes (seasonal changes). In a strive to reduce the enormous stressors on this subspecies, this study assesses the impact of seasonality on nest construction by Cross River gorillas in the Kagwene Gorilla Sanctuary with the objective of evaluating the impact of seasonal changes on the nest construction. To achieve this goal, the study employed a hunter guided survey team, as well as guides/trackers of the Wildlife Conservation Society. This team regularly tracks and searches the forest for gorilla signs using vegetation trails, food prints, dung, and feeding signs which are subsequently followed onwards to the nesting site. Data were collected from January to December 2014. A total of 268 fresh gorilla nest sites were observed containing 1813 individual nests. Out of the 1813 nests recorded, 39.6% (N=718) of the nests were on the ground and 60.4% (N=1095) on trees. The frequency of each nest type varied significantly among months (P =0.4433). There was a significant effect of season on nest category. Ground categories (bare earth, herbaceous, woody and mixed) were more common in the dry season (74.9%) than in the wet season (25.1%). On the other hand, tree nests were more common in the wet season (77.4%) than in the dry season (22.6%). Mean nest diameter for the two seasons (dry and wet) was 1.1 and 1.3 m, respectively. The mean nest height was 12.5 m for both seasons. Cross River gorillas showed higher preferences for tree nests within the height class interval of 11 to 15 m (49.6%). The distribution of nests across gradient of altitudes did not vary significantly between seasons (P>0.05), and nests were most common on steep slopes (n=810). Seasonality did not significantly affect the choice of slope (P>0.05). There was a significant difference in the habitat types (primary forest, light gap, secondary forest and rock) used for nesting, with primary forest being most preferred. Nest site distribution was predominant in the northern section of the sanctuary. This study reveals that, both temperature and rainfall play an important role in nest construction by Cross River gorilla at Kagwene.
 
Key words: Cross River gorilla, nest, seasonality, Kagwene Gorilla Sanctuary.

Baldwin PJ, Sabater PJ, Mcgrew WC, Tutin EG (1981). Comparisons of Nests Made by Different Populations of Chimpanzees (Pan troglodytes). Primates 22(4):474-486.
Crossref

 

Bergl RA, Warren Y, Rawson M (2009). Kagwene Gorilla Sanctuary CyberTracker Manual.Wildlife Conservation Society (WCS) – Takamanda-Mone Landscape Project Annual Report.

 
 

Brownlow AR, Plumptre JA, Reynolds V, Ward R (2001). Sources of Variation in the Nesting Behavior of Chimpanzees (Pan troglodytesschweinfurthii) in the Budongo Forest, Uganda. Am. J. Primatol. 55:49-55.
Crossref

 
 

De Vere RA, Warren Y, Nicholas A, Mackenzie ME, Higham J (2010). Nesting ecology of the Cross River Gorilla at the Kagwene Gorilla Sanctuary Cameroon, with special reference to anthropogenic influence. Am. J. Primatol. 71:1-9.

 
 

Etiendem ND (2013). Ecological and anthropogenic factors of Cross River gorilla (gorilla gorilladiehli) survival at Mawambi Hills, Southwest Cameroon: PhD thesis. VrijeUniversiteit Brussel, Belgium, unpublished.

 
 

Fruth B, Hohmann G (1996).Nest building behavior in the great apes: the great leap forward? Great ape societies Report, 11, 22-25.

 
 

Isabirye-Basuta G M, Lwanga JS (2008). Primate Populations and Their Interactions with Changing Habitats. Int. J. Primatol. 29:35-48.
Crossref

 
 

Koops K, William C, McGrew, Han de Vries, Matsuzaw T (2011). Nest-Building by Chimpanzees (Pan troglodytesverus) at Seringbara Nimba Mountains: Antipredation, Thermoregulation, and Antivector Hypotheses. Int. J. Primatol. 29:64-73.

 
 

Lukas KE, Stoinski TS, Burks K, Snyder R, Bexell S, Maple TL (2003). Nest building in captive Gorilla gorilla gorilla. Int. J. Primatol. 24(1):103-124.
Crossref

 
 

McFarland KL (2007). Ecology of Cross River gorillas (Gorilla gorilla diehli) on Afi Mountain, Cross River State, Nigeria. PhD thesis, City University of New York, USA.

 
 

Mehlman PT, Doran DM (2002). .Influencing western gorilla nest construction at Mondika Research Center. Int. J. Primatol. 23:6.
Crossref

 
 

Morgan D, Sanz C, Robert JO, Strindberg S (2004). Ape Abundance and Habitat Use in the Goualougo Triangle, Republic of Congo. Int. J. Primatol. 26:61-81.

 
 

Neba F (2011). Spatial Point Pattern Analysis of Gorilla nest sites in the Kagwene Sanctuary, Cameroon (Master's thesis, Universitat Jaume I (UJI) Castellon, Spain.

 
 

Nicholas A, Warren Y, Bila S, Ekinde A, Ikfuingei R, Tampie R (2010).Successes in Community-Based Monitoring of Cross River Gorillas (Gorilla gorilla diehli) in Cameroon.Takamanda-Mone Landscape Project. Afr. Primates 7(1):55-60.

 
 

Nkemnyi MF, Nkembi L, Nkemanteh AE, Nku EM (2011).The Cross River gorilla and large mammals species diversity in the in the Lebialem-Mone Forest Landscape, Cameroon. J. Biodivers. Ecol. Sci. 2(1):73-79.

 
 

Oates J, Sunderland-Groves J, Bergl R, Dunn A, Nicholas A, Takang E, Omeni F, Imong I, Fotso R, Nkembi L, Williamson L (2007). Regional Action Plan for the Conservation of the Cross River Gorilla (Gorilla gorilla diehli). IUCN/SSC Primate Specialist Group and Conservation International, Arlington, VA, USA.

 
 

Remis MJ (1993). Nesting behaviour of lowland gorillas in the Dzanga-Sangha Reserve, Central African Republic, Implications for population estimates and understandings of group dynamics. Yale University, Department of Anthropology, New Heaven U.S.A.

 
 

Rothman JM, Pell AN, Dierenfeld ES, Mccann CM (2006). Plant Choice in the Construction of Night Nests by Gorillas in the Bwindi Impenetrable National Park, Uganda. Am. J. Primatol. 68:361-368.
Crossref

 
 

Sunderland-Groves J, Ekinde A, Mboh H (2009). Cross River gorilla (Gorilla gorilla diehli) nesting behaviour at Kagwene Mountain, Cameroon: implications for assessing group size and density. Int. J. Primatol. 30:253-266.
Crossref

 
 

Tutin EG, Parnell RJ, White LJT, Fernandez M (1995). Nest building by lowland gorillas in the Lop´ e Reserve, Gabon: Environmental influences and implications for censusing. Int. J. Primatol. 16(1):53-76.
Crossref

 
 

Ukpong EE, Jacob DE, Ibok PB, Nelson IU (2011). Nest Building Behaviour of Chimpanzee (Pan Troglodytes blumenbach) At Filinga Range of GashakaGumti National Park, Nigeria. J. Sci. Technol. 3:7.

 
 

Wiseman R, Warren Y, Nicholas A, Mackenzie M, Higham PJ (2008). A GIS Habitat Map for the Kagwene Gorilla Sanctuary, Cameroon.

 

 


APA Fuashi, N. A., Nji, A. L., Ekane, M. M., Fowler, A., & Ikfuingei, R. (2017). Assessing the impact of seasonality on Cross River Gorilla Nest Construction at Kagwene Gorilla Sanctuary, North-West Cameroon. Journal of Ecology and The Natural Environment, 9(11), 177-184.
Chicago Nkwatoh Athanasius Fuashi, Akenji Lesly Nji, Melle Maurice Ekane, Andrew Fowler and Romanus Ikfuingei. "Assessing the impact of seasonality on Cross River Gorilla Nest Construction at Kagwene Gorilla Sanctuary, North-West Cameroon." Journal of Ecology and The Natural Environment 9, no. 11 (2017): 177-184.
MLA Nkwatoh Athanasius Fuashi, et al. "Assessing the impact of seasonality on Cross River Gorilla Nest Construction at Kagwene Gorilla Sanctuary, North-West Cameroon." Journal of Ecology and The Natural Environment 9.11 (2017): 177-184.
   
DOI 10.5897/JENE2017.0652
URL http://academicjournals.org/journal/JENE/article-abstract/AD3B10955245

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