Elephant Database
African Elephant Specialist Group

Dung Count (Line Transects) Stratum/Block

Gabon
Phenotype: Forest (based on geographical location)
Data contributed by peter.mwangi@iucn.org, last updated 12/07/2013
Report restricted by data provider
4967 km²
No strata
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Wonga-Wongue Presidential Reserve

Internal name:
Stratum/block area (km²): 4967
Population estimate: 1039
Variance:
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
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Check if no estimate of precision available: true
Asymmetric lower confidence interval: 601
Asymmetric upper confidence interval: 1797
Number of transects covered: 9
Total length of transects covered (in km): 22.4
Effective strip width: 3.2
Number of observations (encounters): 49
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): 81.82
Site where decay rate was measured: Central Africa
Date (year) in which decay rate was measured:
Dung decay rate - bibliographical reference: Maisels, Strindberg et al. (2013)
Variance:
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Check if no estimate of precision available: true
Was defecation rate measured on-site?: false
Estimate of defecation rate used (days): 19.77
Site where the defecation rate was measured: Santchou Reserve, Cameroon
Defecation rate - bibliographical reference: Tchamba, 1992
Variance:
Standard error:
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95% Confidence interval:
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Check if no estimate of precision available: true
Estimate of dung density: 338
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
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95% upper confidence limit:
Asymmetric upper confidence interval: 585
Asymmetric lower confidence interval: 195
Check if no estimate of precision available: false
Dung encounter rate: 2.19
IUCNSpecies Survival Commission

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