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Can δD and δ18O stable isotopes be used to detect long-range dispersal among carabid beetles?

Palmu, Erkki LU ; Birkhofer, Klaus LU ; Hanson, Helena I. LU and Hedlund, Katarina LU (2017) In Applied Soil Ecology 119. p.99-103
Abstract

We studied if hydrogen (δD) and oxygen (δ18O) stable isotope values in three common carabid species in intensively managed agricultural landscapes in southernmost Sweden indicate long-range dispersal. We matched “emerging” (emergence tents) and “colonizing” (pitfall traps) individuals of three carabid species (Trechus quadristriatus, Harpalus rufipes, Pterostichus melanarius) to account for spatial and seasonal variability. There was higher dispersion of δD values among H. rufipes individuals as compared to values of the other two species, which suggests that H. rufipes individuals had the most variable spatial natal origin. The δD values were significantly lower among colonizing compared to emerging individuals in the flight... (More)

We studied if hydrogen (δD) and oxygen (δ18O) stable isotope values in three common carabid species in intensively managed agricultural landscapes in southernmost Sweden indicate long-range dispersal. We matched “emerging” (emergence tents) and “colonizing” (pitfall traps) individuals of three carabid species (Trechus quadristriatus, Harpalus rufipes, Pterostichus melanarius) to account for spatial and seasonal variability. There was higher dispersion of δD values among H. rufipes individuals as compared to values of the other two species, which suggests that H. rufipes individuals had the most variable spatial natal origin. The δD values were significantly lower among colonizing compared to emerging individuals in the flight capable and carnivorous species T. quadristriatus. This result suggests long-range migration of T. quadristriatus individuals from remote locations with deuterium depleted (lower δD) meteoric water. Our study provides a first effort towards understanding the δD and δ18O dynamics in epigean carabids in northern European agroecosystems. Additional research on larger (preferably continental) spatial scales and experimental trials that attempt to disentangle major unaccounted sources of variation and decoupling of δD and δ18O among carabids and other invertebrate natural enemies is urgently needed to allow a more frequent use of δD and δ18O dynamics as indicators of long-range dispersal.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Carabidae, Diet, Emergence, Hydrogen-2, Migration, Oxygen-18
in
Applied Soil Ecology
volume
119
pages
5 pages
publisher
Elsevier
external identifiers
  • scopus:85021177962
  • wos:000408882500012
ISSN
0929-1393
DOI
10.1016/j.apsoil.2017.06.006
language
English
LU publication?
yes
id
d162be63-63f8-4f82-80ba-75e8f7109743
date added to LUP
2017-11-28 08:54:57
date last changed
2018-02-11 04:33:16
@article{d162be63-63f8-4f82-80ba-75e8f7109743,
  abstract     = {<p>We studied if hydrogen (δD) and oxygen (δ<sup>18</sup>O) stable isotope values in three common carabid species in intensively managed agricultural landscapes in southernmost Sweden indicate long-range dispersal. We matched “emerging” (emergence tents) and “colonizing” (pitfall traps) individuals of three carabid species (Trechus quadristriatus, Harpalus rufipes, Pterostichus melanarius) to account for spatial and seasonal variability. There was higher dispersion of δD values among H. rufipes individuals as compared to values of the other two species, which suggests that H. rufipes individuals had the most variable spatial natal origin. The δD values were significantly lower among colonizing compared to emerging individuals in the flight capable and carnivorous species T. quadristriatus. This result suggests long-range migration of T. quadristriatus individuals from remote locations with deuterium depleted (lower δD) meteoric water. Our study provides a first effort towards understanding the δD and δ<sup>18</sup>O dynamics in epigean carabids in northern European agroecosystems. Additional research on larger (preferably continental) spatial scales and experimental trials that attempt to disentangle major unaccounted sources of variation and decoupling of δD and δ<sup>18</sup>O among carabids and other invertebrate natural enemies is urgently needed to allow a more frequent use of δD and δ<sup>18</sup>O dynamics as indicators of long-range dispersal.</p>},
  author       = {Palmu, Erkki and Birkhofer, Klaus and Hanson, Helena I. and Hedlund, Katarina},
  issn         = {0929-1393},
  keyword      = {Carabidae,Diet,Emergence,Hydrogen-2,Migration,Oxygen-18},
  language     = {eng},
  month        = {10},
  pages        = {99--103},
  publisher    = {Elsevier},
  series       = {Applied Soil Ecology},
  title        = {Can δD and δ<sup>18</sup>O stable isotopes be used to detect long-range dispersal among carabid beetles?},
  url          = {http://dx.doi.org/10.1016/j.apsoil.2017.06.006},
  volume       = {119},
  year         = {2017},
}