Elephant Database
African Elephant Specialist Group

Dung Count (Line Transects) Stratum/Block

Gabon
Phenotype: Forest (based on genetic evidence gathered on-site)
Data contributed by peter.mwangi@iucn.org, last updated 21/10/2022
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11539 km²
No strata
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Minkébé National Park and Buffer Zone

Internal name:
Stratum/block area (km²): 11956
Population estimate: 6875
Variance: 5478226.846
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 4587.5
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 3677
Asymmetric upper confidence interval: 12852
Number of transects covered: 13
Total length of transects covered (in km): 38.0
Effective strip width:
Number of observations (encounters): 180
How were distances to observations estimated?: Using instruments
Number of elephants seen:
Number of dungpile on which the decay estimate is based:
Was dung decay rate measured on site, and if so, how?: Decay rate NOT measured on site
Dung decay estimate used (days): 90.0
Site where decay rate was measured: From the Central African MIKE study of 2003
Date (year) in which decay rate was measured:
Dung decay rate - bibliographical reference: Blake, 2005
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: true
Was defecation rate measured on-site?: false
Estimate of defecation rate used (days): 19.0
Site where the defecation rate was measured: Santchou Reserve, Cameroon
Defecation rate - bibliographical reference: Tchamba, 1992
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: true
Estimate of dung density: 971
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Asymmetric upper confidence interval: 1781
Asymmetric lower confidence interval: 530
Check if no estimate of precision available: false
Dung encounter rate: 5.9
IUCNSpecies Survival Commission

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