Elephant Database
African Elephant Specialist Group

Dung Count (Line Transects) Stratum/Block

Democratic Republic of Congo
Phenotype: Forest (based on genetic evidence gathered on-site)
Data contributed by johnhartdrc@gmail.com, last updated 13/07/2022
2011
Report restricted by data provider
12787 km²
Dryseason
No strata
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Okapi Faunal Reserve

Internal name:
Stratum/block area (km²): 12787
Population estimate: 1701
Variance: 205495.6919
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 888.5
95% lower confidence limit: 1036
95% upper confidence limit: 2813
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 1036
Asymmetric upper confidence interval: 2813
Number of transects covered: 97
Total length of transects covered (in km): 143.6
Effective strip width:
Number of observations (encounters): 221
How were distances to observations estimated?: Using instruments
Number of elephants seen: 0
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:
Date (year) in which decay rate was measured:
Dung decay rate - bibliographical reference: Blake 2005, the value used for the Central Africa MIKE surveys 2003
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: 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: 237
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval: 125.0
95% lower confidence limit: 112.0
95% upper confidence limit: 362.0
Asymmetric upper confidence interval: 392
Asymmetric lower confidence interval: 143
Check if no estimate of precision available: false
Dung encounter rate: 1.53
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