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 reuben@refleqt.co.za, last updated 13/07/2022
Report restricted by data provider
16189 km²
Wetseason
Recorded at stratum level
Show aggregates
837
Ngombe Southwest
1624km²

Ngombe North West

Internal name:
Stratum/block area (km²): 902
Population estimate: 329
Variance: 3717.266243
Standard error: 60.96938776
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 119.5
95% lower confidence limit: 230
95% upper confidence limit: 469
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 230
Asymmetric upper confidence interval: 469
Number of transects covered: 22
Total length of transects covered (in km): 43.0
Effective strip width:
Number of observations (encounters): 129
How were distances to observations estimated?:
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: Central Africa Forest
Date (year) in which decay rate was measured: 2004
Dung decay rate - bibliographical reference: MIKE 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: false
Was defecation rate measured on-site?: false
Estimate of defecation rate used (days): 19.0
Site where the defecation rate was measured:
Defecation rate - bibliographical reference: MIKE 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: false
Estimate of dung density: 622
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit: 436.0
95% upper confidence limit: 888.0
Asymmetric upper confidence interval:
Asymmetric lower confidence interval:
Check if no estimate of precision available: false
Dung encounter rate: 2.0
IUCNSpecies Survival Commission

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