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 tara.daniel@iucn.org, last updated 21/10/2022
Report restricted by data provider
609 km²
No strata
Show aggregates
236
corrected to DC
Moukalaba-Doudou Central South
609km²

Moukalaba-Doudou Central South

Internal name: corrected to DC
Stratum/block area (km²): 609
Population estimate: 236
Variance:
Standard error: 952.793107
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 60.5
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 183
Asymmetric upper confidence interval: 304
Number of transects covered: 32
Total length of transects covered (in km): 94.67
Effective strip width:
Number of observations (encounters): 466
How were distances to observations estimated?: Using instruments
Number of elephants seen:
Number of dungpile on which the decay estimate is based: 57
Was dung decay rate measured on site, and if so, how?: Prospectively
Dung decay estimate used (days): 158.0
Site where decay rate was measured: Conkouati-Douli NP, Congo
Date (year) in which decay rate was measured: 2005
Dung decay rate - bibliographical reference: Vanleeuwe, H. & Probert, J. (2014) Decay Rate of Elephant Dung in Conkouati-Douli National Park, Republic of Congo. Pachyderm, 55, 89-91.
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?: true
Estimate of defecation rate used (days): 16.0
Site where the defecation rate was measured: Conkouati-Douli National Park, Republic Of Congo.
Defecation rate - bibliographical reference: Vanleeuwe, H. (2014) Ecological Surveys 2005, 2008, 2010 and 2013: Ecological Surveys At Conkouati-Douli National Park, Republic Of Congo. Unpublished Report. Wildlife Conservation Society Congo, Brazzaville, Congo.
Variance:
Standard error: 1.09
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: 982
Variance:
Standard error: 125.47
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Asymmetric upper confidence interval: 763
Asymmetric lower confidence interval: 1263
Check if no estimate of precision available: false
Dung encounter rate: 4.9
IUCNSpecies Survival Commission

All materials on this site are Copyright (C) 1995-2024 IUCN - The International Union for the Conservation of Nature. Use is permitted only under the Creative Commons Attribution-NonCommercial-ShareAlike license (https://creativecommons.org/licenses/by-nc-sa/4.0).