scholarly journals Differential influence of human impacts on age‐specific demography underpins trends in an African elephant population

Ecosphere ◽  
2021 ◽  
Vol 12 (8) ◽  
Author(s):  
George Wittemyer ◽  
David Daballen ◽  
Iain Douglas‐Hamilton
Keyword(s):  
Human Impacts ◽  
African Elephant ◽  
Elephant Population

Activities for Students: Estimating African Elephant Populations (Part 1)

2009 ◽  
Vol 102 (7) ◽  
pp. 534-539
Author(s):  
Sarah Quebec Fuentes
Keyword(s):  
Mathematics Classroom ◽  
African Elephant ◽  
Entire Area ◽  
The Third ◽  
The Past ◽  
Elephant Population ◽  
History Of ◽  
Representative Area

How many elephants remain in Africa? For a variety of environmental reasons, monitoring the population of elephants in Africa is extremely important. When attempting to estimate the size of an elephant population in a certain area, a researcher must make several decisions. Should the count be conducted from the air or from the ground? Should the elephants in the entire area be counted or only those in a representative area? Should only the elephants themselves be counted, or should signs of their presence—such as dung, tracks, and feeding evidence—be considered as well? Over the past four decades, the approaches used to count elephants have become more statistically refined. This twopart article, to be continued in next month's issue, will explore the mathematics of some of the methods used to count elephants and will present related activities for the mathematics classroom. In this part, we will provide a brief but pertinent history of the African elephant and then present two different methods of counting elephants. This activity may be used as an entire unit or as an application of a particular concept and may be incorporated into several courses. Algebra and geometry students will be able to handle the necessary mathematics. Although this activity informally exposes students to several statistical concepts, a sophisticated understanding of statistics is not required to complete the first two scenarios. The mathematics for the third scenario is more advanced, however; thus, it could be used in higher-level classes such as statistics and calculus. The tasks involved in all three scenarios encourage students to make connections between mathematics and other disciplines and touch on the various implications of mathematical decisions.

Characterizing Stable Populations: An Application to the African Elephant Population

1973 ◽  
Vol 37 (4) ◽  
pp. 513 ◽  
Author(s):  
Charles W. Fowler ◽  
Tim Smith
Keyword(s):  
African Elephant ◽  
Elephant Population ◽  
Stable Populations

State of the North American African elephant population and projections for the future

Zoo Biology ◽  
2000 ◽  
Vol 19 (5) ◽  
pp. 311-320 ◽  
Author(s):  
Deborah Olson ◽  
Robert J. Wiese
Keyword(s):  
North American ◽  
African Elephant ◽  
The North ◽  
The Future ◽  
Elephant Population

scholarly journals Comparative Demography of an At-Risk African Elephant Population

PLoS ONE ◽  
2013 ◽  
Vol 8 (1) ◽  
pp. e53726 ◽  
Author(s):  
George Wittemyer ◽  
David Daballen ◽  
Iain Douglas-Hamilton
Keyword(s):  
At Risk ◽  
African Elephant ◽  
Comparative Demography ◽  
Elephant Population

scholarly journals Aerial Survey Intensity as a Determinant of Estimates of African Elephant Population Sizes and Trends

2009 ◽  
Vol 39 (2) ◽  
pp. 181-191 ◽  
Author(s):  
Sam M. Ferreira ◽  
Rudi J. van Aarde
Keyword(s):  
Aerial Survey ◽  
African Elephant ◽  
Elephant Population ◽  
Population Sizes

Exploring the relationship between NDVI and African elephant population density in protected areas

2012 ◽  
Vol 50 (4) ◽  
pp. 455-463 ◽  
Author(s):  
James P. Duffy ◽  
Nathalie Pettorelli
Keyword(s):  
Population Density ◽  
Protected Areas ◽  
African Elephant ◽  
Elephant Population ◽  
The Relationship

Culling and the dynamics of the Kruger National Park African elephant population

1999 ◽  
Vol 2 (4) ◽  
pp. 287-294 ◽  
Author(s):  
Rudi Aarde ◽  
Ian Whyte ◽  
Stuart Pimm
Keyword(s):  
National Park ◽  
African Elephant ◽  
Kruger National Park ◽  
Elephant Population

Elephants and mammoths: the effect of an imperfect legal substitute on illegal activity

2019 ◽  
Vol 24 (3) ◽  
pp. 225-251
Author(s):  
Naima Farah ◽  
John R. Boyce
Keyword(s):  
Institutional Quality ◽  
African Elephant ◽  
Illegal Activity ◽  
Early Success ◽  
Elephant Population ◽  
Elephant Ivory ◽  
Increasing Demand ◽  
Soviet Russia

AbstractIn response to the CITES ban on trade in elephant ivory, mammoth ivory began to be produced in post-Soviet Russia. We investigate how this substitute to elephant ivory has affected the poaching of elephants. We argue that the early success of the 1989 ivory ban at increasing the African elephant population was driven in part by increasing supply of mammoth ivory. The more recent increases in poaching appear to be driven by increasing demand and falling African institutional quality. We find that absent the 80 tonnes of Russian mammoth ivory exports per annum 2010–2012, elephant ivory prices would have doubled from their $ 100 per kilogram level and that the current poaching level of 34,000 elephants per year may have increased by as many as 55,000 elephants per year on a population of roughly half a million animals.

scholarly journals Resource variability, aggregation and direct density dependence in an open context: the local regulation of an African elephant population

2008 ◽  
Vol 77 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Simon Chamaillé-Jammes ◽  
Hervé Fritz ◽  
Marion Valeix ◽  
Felix Murindagomo ◽  
Jean. Clobert
Keyword(s):  
Density Dependence ◽  
African Elephant ◽  
Local Regulation ◽  
Elephant Population ◽  
Resource Variability

Demography and social dynamics of an African elephant population 35 years after reintroduction as juveniles

2018 ◽  
Vol 55 (6) ◽  
pp. 2898-2907 ◽  
Author(s):  
Timothy R. Kuiper ◽  
Dave J. Druce ◽  
Heleen C. Druce
Keyword(s):  
Social Dynamics ◽  
African Elephant ◽  
Elephant Population
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