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Population fluctuations and synchrony of grassland butterflies in relation to species traits.

Franzén, Markus LU ; Nilsson, Sven LU ; Johansson, Victor and Ranius, Thomas LU (2013) In PLoS ONE 8(10).
Abstract
Population fluctuations and synchrony influence population persistence; species with larger fluctuations and more synchronised population fluctuations face higher extinction risks. Here, we analyse the effect of diet specialisation, mobility, length of the flight period, and distance to the northern edge of the species' distribution in relation to between-year population fluctuations and synchrony of butterfly species. All butterfly species associated with grasslands were surveyed over five successive years at 19 grassland sites in a forest-dominated landscape (50 km(2)) in southern Sweden. At both the local and regional level, we found larger population fluctuations in species with longer flight periods. Population fluctuations were more... (More)
Population fluctuations and synchrony influence population persistence; species with larger fluctuations and more synchronised population fluctuations face higher extinction risks. Here, we analyse the effect of diet specialisation, mobility, length of the flight period, and distance to the northern edge of the species' distribution in relation to between-year population fluctuations and synchrony of butterfly species. All butterfly species associated with grasslands were surveyed over five successive years at 19 grassland sites in a forest-dominated landscape (50 km(2)) in southern Sweden. At both the local and regional level, we found larger population fluctuations in species with longer flight periods. Population fluctuations were more synchronous among localities in diet specialists. Species with a long flight period might move more to track nectar resources compared to species with shorter flight period, and if nectar sources vary widely between years and localities it may explain that population fluctuations increase with increasing flight length. Diet generalists can use different resources (in this case host plants) at different localities and this can explain the lower synchrony in population fluctuations among generalist species. Higher degree of synchrony is one possible explanation for the higher extinction risks that have been observed for more specialised species. Therefore, diet specialists are more often threatened and require more conservation efforts than generalists. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
PLoS ONE
volume
8
issue
10
article number
e78233
publisher
Public Library of Science
external identifiers
  • wos:000326034500070
  • pmid:24205169
  • scopus:84886037806
  • pmid:24205169
ISSN
1932-6203
DOI
10.1371/journal.pone.0078233
language
English
LU publication?
yes
id
5b6b8758-29a7-47bc-b635-5f967b53303f (old id 4179674)
date added to LUP
2016-04-01 13:13:06
date last changed
2020-01-12 11:30:36
@article{5b6b8758-29a7-47bc-b635-5f967b53303f,
  abstract     = {Population fluctuations and synchrony influence population persistence; species with larger fluctuations and more synchronised population fluctuations face higher extinction risks. Here, we analyse the effect of diet specialisation, mobility, length of the flight period, and distance to the northern edge of the species' distribution in relation to between-year population fluctuations and synchrony of butterfly species. All butterfly species associated with grasslands were surveyed over five successive years at 19 grassland sites in a forest-dominated landscape (50 km(2)) in southern Sweden. At both the local and regional level, we found larger population fluctuations in species with longer flight periods. Population fluctuations were more synchronous among localities in diet specialists. Species with a long flight period might move more to track nectar resources compared to species with shorter flight period, and if nectar sources vary widely between years and localities it may explain that population fluctuations increase with increasing flight length. Diet generalists can use different resources (in this case host plants) at different localities and this can explain the lower synchrony in population fluctuations among generalist species. Higher degree of synchrony is one possible explanation for the higher extinction risks that have been observed for more specialised species. Therefore, diet specialists are more often threatened and require more conservation efforts than generalists.},
  author       = {Franzén, Markus and Nilsson, Sven and Johansson, Victor and Ranius, Thomas},
  issn         = {1932-6203},
  language     = {eng},
  number       = {10},
  publisher    = {Public Library of Science},
  series       = {PLoS ONE},
  title        = {Population fluctuations and synchrony of grassland butterflies in relation to species traits.},
  url          = {http://dx.doi.org/10.1371/journal.pone.0078233},
  doi          = {10.1371/journal.pone.0078233},
  volume       = {8},
  year         = {2013},
}