Modelling the movement of a soil insect
(2004) In Journal of Theoretical Biology 231(4). p.497-513- Abstract
- We use a linear autoregressive model to describe the movement of a soil-living insect, Protaphorura armata (Collembola). Models of this kind can be viewed as extensions of a random walk, but unlike a correlated random walk, in which the speed and turning angles are independent, our model identifies and expresses the correlations between the turning angles and a variable speed. Our model uses data in x- and y-coordinates rather than in polar coordinates, which is useful for situations in which the resolution of the observations is limited. The movement of the insect was characterized by (i) looping behaviour due to autocorrelation and cross correlation in the velocity process and (ii) occurrence of periods of inactivity, which we describe... (More)
- We use a linear autoregressive model to describe the movement of a soil-living insect, Protaphorura armata (Collembola). Models of this kind can be viewed as extensions of a random walk, but unlike a correlated random walk, in which the speed and turning angles are independent, our model identifies and expresses the correlations between the turning angles and a variable speed. Our model uses data in x- and y-coordinates rather than in polar coordinates, which is useful for situations in which the resolution of the observations is limited. The movement of the insect was characterized by (i) looping behaviour due to autocorrelation and cross correlation in the velocity process and (ii) occurrence of periods of inactivity, which we describe with a Poisson random effects model. We also introduce obstacles to the environment to add structural heterogeneity to the movement process. We compare aspects such as loop shape, inter-loop time, holding angles at obstacles, net squared displacement, number, and duration of inactive periods between observed and predicted movement. The comparison demonstrates that our approach is relevant as a starting-point to predict behaviourally complex moving, e.g. systematic searching, in a heterogeneous landscape. (C) 2004 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/146180
- author
- Wiktorsson, Magnus LU ; Rydén, Tobias LU ; Nilsson, Elna LU and Bengtsson, Göran LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Theoretical Biology
- volume
- 231
- issue
- 4
- pages
- 497 - 513
- publisher
- Academic Press
- external identifiers
-
- wos:000225377400004
- pmid:15488527
- scopus:4544356295
- ISSN
- 1095-8541
- DOI
- 10.1016/j.jtbi.2004.06.024
- language
- English
- LU publication?
- yes
- id
- 7fa74fbe-9b97-4fef-a8b1-f20669fb3c6a (old id 146180)
- date added to LUP
- 2016-04-01 11:54:36
- date last changed
- 2022-03-28 17:28:21
@article{7fa74fbe-9b97-4fef-a8b1-f20669fb3c6a,
abstract = {{We use a linear autoregressive model to describe the movement of a soil-living insect, Protaphorura armata (Collembola). Models of this kind can be viewed as extensions of a random walk, but unlike a correlated random walk, in which the speed and turning angles are independent, our model identifies and expresses the correlations between the turning angles and a variable speed. Our model uses data in x- and y-coordinates rather than in polar coordinates, which is useful for situations in which the resolution of the observations is limited. The movement of the insect was characterized by (i) looping behaviour due to autocorrelation and cross correlation in the velocity process and (ii) occurrence of periods of inactivity, which we describe with a Poisson random effects model. We also introduce obstacles to the environment to add structural heterogeneity to the movement process. We compare aspects such as loop shape, inter-loop time, holding angles at obstacles, net squared displacement, number, and duration of inactive periods between observed and predicted movement. The comparison demonstrates that our approach is relevant as a starting-point to predict behaviourally complex moving, e.g. systematic searching, in a heterogeneous landscape. (C) 2004 Elsevier Ltd. All rights reserved.}},
author = {{Wiktorsson, Magnus and Rydén, Tobias and Nilsson, Elna and Bengtsson, Göran}},
issn = {{1095-8541}},
language = {{eng}},
number = {{4}},
pages = {{497--513}},
publisher = {{Academic Press}},
series = {{Journal of Theoretical Biology}},
title = {{Modelling the movement of a soil insect}},
url = {{http://dx.doi.org/10.1016/j.jtbi.2004.06.024}},
doi = {{10.1016/j.jtbi.2004.06.024}},
volume = {{231}},
year = {{2004}},
}