The movement of African elephants in a human‐dominated land‐use mosaic

Land outside of gazetted protected areas is increasingly seen as important to the future of elephant persistence in Africa. However, other than inferential studies on crop raiding, very little is understood about how elephants Loxodonta africana use and are affected by human-occupied landscapes. This is largely a result of restrictions in technology, which made detailed assessments of elephant movement outside of protected areas challenging. Recent advances in radio telemetry have changed this, enabling researchers to establish over a 24-h period where tagged animals spend their time. We assessed the movement of 13 elephants outside of gazetted protected areas across a range of land-use types on the Laikipia plateau in north-central Kenya. The elephants monitored spent more time at night than during the day in areas under land use that presented a risk of mortality associated with human occupants. The opposite pattern was found on large-scale ranches where elephants were tolerated. Furthermore, speed of movement was found to be higher where elephants were at risk. These results demonstrate that elephants facultatively alter their behaviour to avoid risk in human-dominated landscapes. This helps them to maintain connectivity between habitat refugia in fragmented land-use mosaics, possibly alleviating some of the potential negative impacts of fragmentation. At the same time, however, it allows elephants to penetrate smallholder farmland to raid crops. The greater the amount of smallholder land within an elephant's range, the more it was utilized, with consequent implications for conflict. These findings underscore the importance of (1) land-use planning to maintain refugia; (2) incentives to prevent further habitat fragmentation; (3) the testing and application of conflict mitigation measures where fragmentation has already taken place.

[1]  Tracking African elephants with a global positioning system (GPS) radio collar , 1998 .

[2]  Philippe Bouché,et al.  Ranging Behavior, Population Status and Recent History of the Desert Elephants of Mali , 2003 .

[3]  G. Wittemyer The elephant population of Samburu and Buffalo Springs National Reserves, Kenya , 2001 .

[4]  Richard F. W. Barnes,et al.  The conflict between humans and elephants in the central African forests , 1996 .

[5]  J. D. du Toit,et al.  Coexistence between People and Elephants in African Savannas , 1999 .

[6]  M. Tchamba History and present status of the human/elephant conflict in the Waza-Logone Region, Cameroon, West Africa. , 1996 .

[7]  Final report : east front grizzly studies / , 1989 .

[8]  L. Ruggiero,et al.  Resilience and conservation of large carnivores in the Rocky Mountains , 1996 .

[9]  F. Vollrath,et al.  Social dominance, seasonal movements, and spatial segregation in African elephants: a contribution to conservation behavior , 2007, Behavioral Ecology and Sociobiology.

[10]  F. Dyke,et al.  Reactions of mountain lions to logging and human activity , 1986 .

[11]  M. Lindeque,et al.  Satellite tracking of elephants in northwestern Namibia , 1991 .

[12]  F. Cotterill Principles of Conservation Biology, 2nd Edition , 1999, Biodiversity & Conservation.

[13]  Michael P. Wells,et al.  Planning for people and parks: Design dilemmas , 1992 .

[14]  David Western,et al.  Natural connections : perspectives in community-based conservation , 1996 .

[15]  I. Douglas‐Hamilton,et al.  Distribution and status of elephants in West Africa (1) , 1991 .

[16]  C. Thouless,et al.  Shocking elephants: Fences and crop raiders in Laikipia District, Kenya , 1995 .

[17]  E. D. Merode,et al.  Factors affecting elephant distribution at Garamba National Park and surrounding reserves, Zaire, with a focus on human-elephant conflict , 1995 .

[18]  R. Hoare,et al.  Determinants of human–elephant conflict in a land‐use mosaic , 1999 .

[19]  I. Douglas‐Hamilton,et al.  On the ecology and behaviour of the Lake Manyara elephants , 1973 .

[20]  Rosie Woodroffe,et al.  People and Wildlife, Conflict or Co-existence? , 2005 .

[21]  G. Craig,et al.  The African Elephant Database , 2001, Oryx.

[22]  C. Thouless Home ranges and social organization of female elephants in northern Kenya , 1996 .

[23]  T. Krink,et al.  Movements and corridors of African elephants in relation to protected areas , 2005, Naturwissenschaften.

[24]  Phyllis C. Lee,et al.  African elephants Loxodonta africana and human‐elephant interactions: implications for conservation , 2006 .

[25]  L. Fahrig Nature of ecological theories , 1988 .

[26]  L. Höhnel Discovery Of Lakes Rudolf And Stefanie A Narrative Of Count Samuel Teleki's Exploring And Hunting Expedition In Eastern Equatorial Africa In 1887 And 1888 , 2010 .

[27]  C. Southey,et al.  The opportunity costs of biodiversity conservation in Kenya , 1995 .

[28]  W. Getz,et al.  The socioecology of elephants: analysis of the processes creating multitiered social structures , 2005, Animal Behaviour.

[29]  E. Abe The behavioural ecology of elephant survivors in Queen Elizabeth National Park, Uganda , 1994 .

[30]  A. Blom,et al.  Man determines the distribution of elephants in the rain forests of northeastern Gabon , 1991 .

[31]  P. Beier Dispersal of juvenile cougars in fragmented habitat , 1995 .

[32]  E. M. Hema,et al.  Crop‐raiding elephants and the moon , 2007 .

[33]  M. Graham,et al.  Uptake and performance of farm-based measures for reducing crop raiding by elephants Loxodonta africana among smallholder farms in Laikipia District, Kenya , 2008, Oryx.

[34]  R. Sukumar The management of large mammals in relation to male strategies and conflict with people , 1991 .

[35]  D. Lewis Fruiting patterns, seed germination, and distribution of Sclerocarya caffra in an elephant-inhabited woodland , 1987 .

[36]  Charles Breen,et al.  The Kruger Experience: Ecology and Management of Savanna Heterogeneity , 2004, Environmental Conservation.

[37]  R. Owen-Smith,et al.  Megaherbivores: The Influence of Very Large Body Size on Ecology , 1990 .

[38]  N. Georgiadis,et al.  Savanna herbivore dynamics in a livestock-dominated landscape: I. Dependence on land use, rainfall, density, and time , 2007 .

[39]  N. Sitati,et al.  Predicting spatial aspects of human–elephant conflict , 2003 .

[40]  D. Happold,et al.  The interactions between humans and mammals in Africa in relation to conservation: a review , 1995, Biodiversity & Conservation.

[41]  H. Prins,et al.  Factors influencing the distribution of large mammals within a protected central African forest , 2005, Oryx.

[42]  D. Lewis Disturbance effects on elephant feeding: evidence for compression in Luangwa Valley, Zambia , 1986 .

[43]  K. Kangwana Human-elephant conflict: the challenge ahead , 1995 .

[44]  C. Thouless,et al.  African elephant status report 2007 : an update from the African elephant database , 2002 .

[45]  A. Neumann Elephant-hunting in east equatorial Africa , 1898 .

[46]  L. Naughton-Treves FARMING THE FOREST EDGE: VULNERABLE PLACES AND PEOPLE AROUND KIBALE NATIONAL PARK, UGANDA , 1997 .

[47]  R. Hoare Options for the control of elephants in conflict with people , 1995 .

[48]  M. Laurenson,et al.  Spatial ecology of golden jackal in farmland in the Ethiopian Highlands , 2004 .

[49]  Wayne M. Getz,et al.  A model-framed evaluation of elephant effects on tree and fire dynamics in African savannas , 2005 .

[50]  Robert A. Gitzen,et al.  Analysis of Animal Space Use and Movements , 2001 .

[51]  D. Hulme,et al.  African wildlife and livelihoods: the promise and performance of community conservation. , 2001 .

[52]  C. Norwood Linkages in the Landscape: The Role of Corridors and Connectivity in wildlife Conservation , 1999 .

[53]  Valeria Galanti,et al.  Space and habitat use of the African elephant in the Tarangire-Manyara ecosystem, Tanzania: Implications for conservation , 2006 .

[54]  C. Thouless Conflict between humans and elephants on private land in northern Kenya , 1994, Oryx.

[55]  Paul C. Paquet,et al.  Conservation Biology and Carnivore Conservation in the Rocky Mountains , 1996 .

[56]  R. Hoare,et al.  African elephants and humans in conflict: the outlook for co-existence , 2000, Oryx.

[57]  Rosie Woodroffe,et al.  People and Wildlife: People and Wildlife, Conflict or Co-existence? , 2005 .

[58]  Paul Dickson,et al.  Science and Uncertainty in South Africa's Elephant Culling Debate , 2009 .

[59]  Stephen Harris,et al.  Home‐range analysis using radio‐tracking data–a review of problems and techniques particularly as applied to the study of mammals , 1990 .

[60]  Gary K. Meffe,et al.  Principles of Conservation Biology , 1995 .

[61]  K. Leggett,et al.  Home range and seasonal movement of elephants in the Kunene Region, northwestern Namibia , 2006 .