Elephant Database
African Elephant Specialist Group

Dung Count (Line Transects) Stratum/Block

Gabon
Phenotype: Forest (based on genetic evidence gathered on-site)
Data contributed by peter.mwangi@iucn.org, last updated 21/10/2022
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3864 km²
Recorded at stratum level
Show aggregates

Southern Buffer zone

Internal name:
Stratum/block area (km²): 868
Population estimate: 638
Variance: 20117.65931
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 278.0
95% lower confidence limit: 360
95% upper confidence limit: 916
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 418
Asymmetric upper confidence interval: 973
Number of transects covered: 23
Total length of transects covered (in km): 57.0
Effective strip width:
Number of observations (encounters):
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
Date (year) in which decay rate was measured: 2005
Dung decay rate - bibliographical reference: Momont, 2007
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: Central African forests
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: true
Estimate of dung density: 997
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval: 434.0
95% lower confidence limit: 563.0
95% upper confidence limit: 1431.0
Asymmetric upper confidence interval: 1521
Asymmetric lower confidence interval: 653
Check if no estimate of precision available: false
Dung encounter rate: 6.0
IUCNSpecies Survival Commission

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