Dai et al. (2007) Short duration daytime movements of a cow herd of African elephants

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Short duration daytime movements of a cow herd of African elephants

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CONTRIBUTORS:

	Author:	Dai, Xiaohua (GanNan Normal University)
	Author:	Shannon, Graeme
	Author:	Slotow, Rob
	Author:	Page, Bruce
	Author:	Duffy, Kevin

JOURNAL:

Journal of mammalogy, 88(1), 151 - 157.

YEAR:

2007

PUB TYPE:

Journal Article

SUBJECT(S):

elephant, Loxodonta africana, animal movement, Lévy walk, looping

DISCIPLINE:

Ecology

HTTP:

http://www.asmjournals.org/perlserv/?request=get-abstract&doi=10.1644%2F06-MAMM-A-035R1.1

LANGUAGE:

English

PUB ID:

103-426-214 (Last edited on 2007/02/24 20:54:04 US/Mountain)

SPONSOR(S):

ABSTRACT:
We examined a herd of African elephant's (Loxodonta africana) daytime movements at 10 min, 15 min and 20 min intervals in Pongola Game Reserve, South Africa. Our results indicate that this group tend to head forward during consecutive movements, especially during long moves. Serial movement lengths and serial movement angles were autocorrelated at 10 min and 15 min intervals but not at the 20 min interval indicating that this interval may be a suitable scale to avoid over-sampling. The herd movements followed a Lévy-modulated correlated random walk. In addition looping movements were detected. The spatial scale of the loops averaged about 1 km. Movement strategies that include both Lévy walks and correlated random walk are thought to optimise foraging which could explain the results for this group of elephant.

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