Elephant Database
African Elephant Specialist Group

Dung Count (Line Transects) Stratum/Block

Congo
Phenotype: Forest (based on genetic evidence gathered on-site)
Data contributed by peter.mwangi@iucn.org, last updated 15/07/2022
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1029 km²
No strata
Show aggregates
104
Batanga
1029km²

Batanga

Internal name:
Stratum/block area (km²): 1029
Population estimate: 104
Variance:
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 153.0
95% lower confidence limit: 32
95% upper confidence limit: 338
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 32
Asymmetric upper confidence interval: 338
Number of transects covered: 29
Total length of transects covered (in km): 58.0
Effective strip width:
Number of observations (encounters): 78
How were distances to observations estimated?: Using instruments
Number of elephants seen:
Number of dungpile on which the decay estimate is based: 171
Was dung decay rate measured on site, and if so, how?: Prospectively
Dung decay estimate used (days): 51.0
Site where decay rate was measured: Nouabale-Ndoki, Congo
Date (year) in which decay rate was measured: 2006
Dung decay rate - bibliographical reference: Breuer and Hockemba, 2007
Variance:
Standard error: 2.81
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: false
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: 0.23
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: false
Estimate of dung density: 102
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval: 151.0
95% lower confidence limit: 0.0
95% upper confidence limit: 253.0
Asymmetric upper confidence interval: 332
Asymmetric lower confidence interval: 31
Check if no estimate of precision available: false
Dung encounter rate: 0.0
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