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Titolo:
Modelling animal movement as a persistent random walk in two dimensions: expected magnitude of net displacement
Autore:
Wu, H; Li, BL; Springer, TA; Neill, WH;
Indirizzi:
Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA Univ New Mexico Albuquerque NM USA 87131 Biol, Albuquerque, NM 87131 USA Texas A&M Univ, Ctr Biosyst Modelling, Dept Ind Engn, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 d Engn, College Stn, TX 77843 USA Wildlife Int, Eastern, MD 21601 USA Wildlife Int Eastern MD USA 21601Wildlife Int, Eastern, MD 21601 USA Texas A&M Univ, Dept Wildlife & Fisheries Sci, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 es Sci, College Stn, TX 77843 USA
Titolo Testata:
ECOLOGICAL MODELLING
fascicolo: 1-2, volume: 132, anno: 2000,
pagine: 115 - 124
SICI:
0304-3800(20000730)132:1-2<115:MAMAAP>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORRELATED RANDOM-WALK; ENVIRONMENTS;
Keywords:
animal movement model; expected net displacement; random walk; root mean square of displacement; turning angle distribution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Li, BL Univ New Mexico, Dept Biol, 167 Castetter Hall, Albuquerque, NM 87131 USA Univ New Mexico 167 Castetter Hall Albuquerque NM USA 87131 131 USA
Citazione:
H. Wu et al., "Modelling animal movement as a persistent random walk in two dimensions: expected magnitude of net displacement", ECOL MODEL, 132(1-2), 2000, pp. 115-124

Abstract

We present semi-empirical model of persistent random walk for studying animal movements in two-dimensions. The model incorporates an arbitrary distribution for the angles between successive steps in the tracks. Inclusion of a turning angle distribution enables explicit computation of the effect of persistence in the direction of travel on the expected magnitude of net displacement of the animal over time. We employed a form-analogous approach toobtain expressions for the expected net displacement and derived root meansquare of the expected displacement of an animal at the end of a multi-step random walk in which turning angles were drawn from the Lemicon of Pascal, the elliptical, the von Mises,and the wrapped Cauchy distributions. The accuracy of these expressions for the expected magnitude of net displacementwas tested by comparison with simulated results of persistent random walkswhere turning angles were drawn form the wrapped Cauchy distribution. Our results should be useful in predicting two-dimensional distribution of moving animals for which frequency distributions of the turning angles can be measured. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 20:21:32