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 aed@solertium.com, last updated 27/06/2022
Mike survey Northern Congo 2003
2003
Report restricted by data provider
6631 km²
Both wet and dry seasons
Recorded at stratum level
Show aggregates

Mokabi Logging Concession

Internal name: new
Stratum/block area (km²): 2669
Population estimate: 380
Variance:
Standard error:
Value of t used to calculate 95% confidence interval:
Degrees of freedom:
95% confidence interval: 182.0
95% lower confidence limit:
95% upper confidence limit:
Check if no estimate of precision available: false
Asymmetric lower confidence interval: 239
Asymmetric upper confidence interval: 603
Number of transects covered: 45
Total length of transects covered (in km): 45.0
Effective strip width:
Number of observations (encounters):
How were distances to observations estimated?: Using instruments
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:
Date (year) in which decay rate was measured:
Dung decay rate - bibliographical reference: Same figure of decay was used for the central African MIKE surveys across Central Africa: Blake, 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: Blake, 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: 243
Variance:
Standard error:
Value of t:
Degrees of freedom:
95% Confidence interval:
95% lower confidence limit:
95% upper confidence limit:
Asymmetric upper confidence interval: 386
Asymmetric lower confidence interval: 153
Check if no estimate of precision available: false
Dung encounter rate: 1.8
IUCNSpecies Survival Commission

All materials on this site are Copyright (C) 1995-2022 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).