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Population dynamics of the butterfly Pyrgus armoricanus after translocation beyond its northern range margin

Widhalm, Theresia and Fourcade, Yoan and Frank, Thomas and Öckinger, Erik (2020). Population dynamics of the butterfly Pyrgus armoricanus after translocation beyond its northern range margin. Insect Conservation and Diversity. 13 , 617-629
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Abstract

Translocation experiments can be used to study the factors limiting species' distributions and to infer potential drivers of successful colonisation during range shifts. To study the expansion dynamics of the butterflyPyrgus armoricanusin southern Sweden and to find out whether its distribution was limited by climate, translocation experiments were carried out within and 50-60 km beyond its natural range margin. Populations were monitored for 8 years following the translocation. Although most translocation attempts failed,P. armoricanuswas able to survive in two sites north of its current range limit. One of them eventually led to expansion and establishment of a viable metapopulation. Translocation success appeared to be independent of latitude, suggesting that climate is not the main factor determining the current northern distribution limits of this butterfly. Population growth and secondary spread in the expanding population were positively related to patch area and connectivity, while local habitat quality seemed to be less important. The successful translocation and the importance of a well-connected patch network suggest that the current distribution ofP. armoricanusis limited by its low dispersal ability combined with the fragmentation of its habitat, making it unlikely to track its changing climatic niche. Assisted migration could be an effective tool for such species, but long-term evidence for its effectiveness is not yet available.

Authors/Creators:Widhalm, Theresia and Fourcade, Yoan and Frank, Thomas and Öckinger, Erik
Title:Population dynamics of the butterfly Pyrgus armoricanus after translocation beyond its northern range margin
Series Name/Journal:Insect Conservation and Diversity
Year of publishing :2020
Volume:13
Page range:617-629
Number of Pages:13
Publisher:WILEY
ISSN:1752-458X
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:assisted migration, butterflies, climate change, dispersal ability, lepidoptera, metapopulation, range shift, temperature, translocation experiment
URN:NBN:urn:nbn:se:slu:epsilon-p-107244
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107244
Additional ID:
Type of IDID
DOI10.1111/icad.12430
Web of Science (WoS)000555267400001
ID Code:22131
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:05 Feb 2021 09:49
Metadata Last Modified:08 Feb 2021 11:59

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