Elephant Database
African Elephant Specialist Group

Dung Count (Line Transects) Stratum/Block

Gabon
MIKE site
Phenotype: Forest (based on geographical location)
Data contributed by peter.mwangi@iucn.org, last updated 02/04/2012
2009
Report restricted by data provider
4486 km²
Multiple strata reported as aggregate
Show aggregates

Lopé National Park

Internal name:
Stratum/block area (km²): 4486
Population estimate: 4142
Variance: 1222378.436
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 2167.0
95% lower confidence limit: 1975
95% upper confidence limit: 6309
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 2508
Asymmetric upper confidence interval: 6842
Number of transects covered: 49
Total length of transects covered (in km): 114.0
Effective strip width: 2.14
Number of observations (encounters): 776
How were distances to observations estimated?: Using instruments
Number of elephants seen:
Number of dungpile on which the decay estimate is based: 816
Was dung decay rate measured on site, and if so, how?: Retrospectively
Dung decay estimate used (days): 71.0
Site where decay rate was measured: Lopé
Date (year) in which decay rate was measured: 2007
Dung decay rate - bibliographical reference: Momont, 2007
Variance:
Standard error: 13.33
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: 1557
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval: 703.5
95% lower confidence limit: 853.5
95% upper confidence limit: 2260.5
Asymmetric upper confidence interval: 1000
Asymmetric lower confidence interval: 2407
Check if no estimate of precision available: false
Dung encounter rate: 6.77
IUCNSpecies Survival Commission

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