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 23/05/2012
Report restricted by data provider
1976 km²
Recorded at stratum level
Show aggregates

Mont Birougou National Park

Internal name:
Stratum/block area (km²): 688
Population estimate: 89
Variance: 2708.246564
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 102.0
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 34
Asymmetric upper confidence interval: 238
Number of transects covered: 15
Total length of transects covered (in km): 30.0
Effective strip width: 1.5
Number of observations (encounters): 16
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): 71.0
Site where decay rate was measured: Lope National Park, Gabon, mature forest
Date (year) in which decay rate was measured: 2006
Dung decay rate - bibliographical reference: Moment 2007 (Thesis)
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: 175
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Asymmetric upper confidence interval: 466
Asymmetric lower confidence interval: 66
Check if no estimate of precision available: false
Dung encounter rate: 0.53
IUCNSpecies Survival Commission

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