Statistical analysis of the influence of conspecifics on the dispersal of a soil collembola.
Bengtsson, Göran LU ; Rydén, Tobias LU ; Öhrn, Maria Sjögren LU and Wiktorsson, Magnus LU
(2002)
In Theoretical Population Biology
61(2).
p.97-113
- Abstract
- The evidence for dispersal activity among soil-living invertebrates comes mainly from observations of their movement on artificial substrates or of colonisation of defaunated soils in the field. In an attempt to elucidate the dispersal pattern of soil collembolans in the presence of conspecifics, statistical analyses were undertaken to describe and simulate the movement of groups of Onychiurus armatus released in trays of homogeneous soil. A chi(2) test was used to reject the null hypothesis that individuals moved independently of each other and uniformly in all directions. The mean radial distance moved (1-2 cm day(-1)) and the radial standard deviation varied temporally and with the density of conspecifics. To capture the interaction... (More)
- The evidence for dispersal activity among soil-living invertebrates comes mainly from observations of their movement on artificial substrates or of colonisation of defaunated soils in the field. In an attempt to elucidate the dispersal pattern of soil collembolans in the presence of conspecifics, statistical analyses were undertaken to describe and simulate the movement of groups of Onychiurus armatus released in trays of homogeneous soil. A chi(2) test was used to reject the null hypothesis that individuals moved independently of each other and uniformly in all directions. The mean radial distance moved (1-2 cm day(-1)) and the radial standard deviation varied temporally and with the density of conspecifics. To capture the interaction between the moving individuals, four dispersal models (pure diffusion, diffusion with drift interaction, drift interaction and synchronised diffusion, and drift interaction and behavioural mood), were formulated as stochastic differential equations. The parameters of the models were estimated by minimising the deviance between the observed replicates and replicates that were simulated using the models. The dynamics of movement were best described by modelling the drift interaction as dependent on whether individuals were in a social or an asocial mood. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/107778
- author
- Bengtsson, Göran
LU
; Rydén, Tobias
LU
; Öhrn, Maria Sjögren
LU
and Wiktorsson, Magnus
LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Animal, Animal Migration, Chi-Square Distribution, Statistical, Models, Movement, Oligochaeta, Social Behavior, Soil, Stochastic Processes, Support, Non-U.S. Gov't, Sweden
- in
- Theoretical Population Biology
- volume
- 61
- issue
- 2
- pages
- 97 - 113
- publisher
- Academic Press
- external identifiers
-
- pmid:11969383
- wos:000175473300001
- scopus:0036512659
- ISSN
- 1096-0325
- DOI
- 10.1006/tpbi.2001.1564
- language
- English
- LU publication?
- yes
- id
- 1c6d04b7-08a8-408a-bf03-988afcb5ef24 (old id 107778)
- alternative location
- http://www.ingentaconnect.com/content/ap/tp/2002/00000061/00000002/art01564
- date added to LUP
- 2016-04-01 15:47:34
- date last changed
- 2024-01-10 19:54:02
@article{1c6d04b7-08a8-408a-bf03-988afcb5ef24,
abstract = {{The evidence for dispersal activity among soil-living invertebrates comes mainly from observations of their movement on artificial substrates or of colonisation of defaunated soils in the field. In an attempt to elucidate the dispersal pattern of soil collembolans in the presence of conspecifics, statistical analyses were undertaken to describe and simulate the movement of groups of Onychiurus armatus released in trays of homogeneous soil. A chi(2) test was used to reject the null hypothesis that individuals moved independently of each other and uniformly in all directions. The mean radial distance moved (1-2 cm day(-1)) and the radial standard deviation varied temporally and with the density of conspecifics. To capture the interaction between the moving individuals, four dispersal models (pure diffusion, diffusion with drift interaction, drift interaction and synchronised diffusion, and drift interaction and behavioural mood), were formulated as stochastic differential equations. The parameters of the models were estimated by minimising the deviance between the observed replicates and replicates that were simulated using the models. The dynamics of movement were best described by modelling the drift interaction as dependent on whether individuals were in a social or an asocial mood.}},
author = {{Bengtsson, Göran and Rydén, Tobias and Öhrn, Maria Sjögren and Wiktorsson, Magnus}},
issn = {{1096-0325}},
keywords = {{Animal; Animal Migration; Chi-Square Distribution; Statistical; Models; Movement; Oligochaeta; Social Behavior; Soil; Stochastic Processes; Support; Non-U.S. Gov't; Sweden}},
language = {{eng}},
number = {{2}},
pages = {{97--113}},
publisher = {{Academic Press}},
series = {{Theoretical Population Biology}},
title = {{Statistical analysis of the influence of conspecifics on the dispersal of a soil collembola.}},
url = {{http://dx.doi.org/10.1006/tpbi.2001.1564}},
doi = {{10.1006/tpbi.2001.1564}},
volume = {{61}},
year = {{2002}},
}