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Transient peak in moth diversity as a response to organic farming

Jonason, Dennis ; Franzén, Markus LU and Pettersson, Lars LU (2013) In Basic and Applied Ecology 14(6). p.515-522
Abstract
Few initiatives to preserve and enhance biodiversity on farmland have been as thoroughly evaluated and debated as the agri-environment schemes (AES). Yet, little is known how confounding factors co-varying with the specific AES measures may affect species responses. Here, we quantify the influence of one such factor, the time since transition to organic farming, on moth diversity patterns. We found that species richness and abundance of moths were higher on new organic farms (years since transition ≤6) compared to old organic (≥15 years) and conventional farms, indicating a transient diversity peak. This correlates with the abundance patterns of the weed Cirsium arvense, which also reached its highest densities on new organic farms. Weeds... (More)
Few initiatives to preserve and enhance biodiversity on farmland have been as thoroughly evaluated and debated as the agri-environment schemes (AES). Yet, little is known how confounding factors co-varying with the specific AES measures may affect species responses. Here, we quantify the influence of one such factor, the time since transition to organic farming, on moth diversity patterns. We found that species richness and abundance of moths were higher on new organic farms (years since transition ≤6) compared to old organic (≥15 years) and conventional farms, indicating a transient diversity peak. This correlates with the abundance patterns of the weed Cirsium arvense, which also reached its highest densities on new organic farms. Weeds such as C. arvense constitute a notorious problem in organic farming. However, they also provide various resources for farmland biodiversity, and our results strongly suggest that the transient weed peak may be important in influencing the parallel peak among the moths. This stresses the problem in balancing out production and conservation values. More generally, our results show that rather than having static effects on the environment, AES can have an important temporal component and result in a dynamic interplay between different trophic levels. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Agri-environment schemes, Agricultural intensification, Cirsium arvense, Farmland biodiversity, Farmland conservation, Temporal effects
in
Basic and Applied Ecology
volume
14
issue
6
pages
515 - 522
publisher
Elsevier
external identifiers
  • wos:000324035600008
  • scopus:84883656780
ISSN
1618-0089
DOI
10.1016/j.baae.2013.07.003
language
English
LU publication?
yes
id
e37be393-dc06-4131-9e1e-6b69ec8f3213 (old id 4001614)
date added to LUP
2016-04-01 09:48:04
date last changed
2020-01-05 03:01:00
@article{e37be393-dc06-4131-9e1e-6b69ec8f3213,
  abstract     = {Few initiatives to preserve and enhance biodiversity on farmland have been as thoroughly evaluated and debated as the agri-environment schemes (AES). Yet, little is known how confounding factors co-varying with the specific AES measures may affect species responses. Here, we quantify the influence of one such factor, the time since transition to organic farming, on moth diversity patterns. We found that species richness and abundance of moths were higher on new organic farms (years since transition ≤6) compared to old organic (≥15 years) and conventional farms, indicating a transient diversity peak. This correlates with the abundance patterns of the weed Cirsium arvense, which also reached its highest densities on new organic farms. Weeds such as C. arvense constitute a notorious problem in organic farming. However, they also provide various resources for farmland biodiversity, and our results strongly suggest that the transient weed peak may be important in influencing the parallel peak among the moths. This stresses the problem in balancing out production and conservation values. More generally, our results show that rather than having static effects on the environment, AES can have an important temporal component and result in a dynamic interplay between different trophic levels.},
  author       = {Jonason, Dennis and Franzén, Markus and Pettersson, Lars},
  issn         = {1618-0089},
  language     = {eng},
  number       = {6},
  pages        = {515--522},
  publisher    = {Elsevier},
  series       = {Basic and Applied Ecology},
  title        = {Transient peak in moth diversity as a response to organic farming},
  url          = {http://dx.doi.org/10.1016/j.baae.2013.07.003},
  doi          = {10.1016/j.baae.2013.07.003},
  volume       = {14},
  year         = {2013},
}