English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/201564
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Long-term monitoring of Menorcan butterfly populations reveals widespread insular biogeographical patterns and negative trends

AuthorsColom, Pau; Carreras, David; Stefanescu, Constantino
KeywordsIsland biogeography
Balearic Islands
Butterfly assemblages
Habitat specialization
Density compensation
Population trends
Issue Date2019
PublisherSpringer
CitationBiodiversity and Conservation 28: 1837-1851 (2019)
AbstractA number of studies analysing the structure of butterfly communities on Mediterranean islands have confirmed the well-established pattern of a current decrease in species richness in island communities. However, these studies generally lack quantitative data on butterfly population densities across habitats and over time. This precludes testing the hypotheses of ecological release, niche expansion and density compensation in island populations and their links to the presence of fewer competitors and/or predators. Here we use long-term monitoring data on butterfly populations from five sites on Menorca (Balearic Islands) and 20 sites from continental Catalonia (NE Spain) to test several hypotheses regarding island biogeography. We first confirm that island butterfly assemblages are not only impoverished versions of their continental counterparts but also have an over-representation of habitat generalists and highly mobile species. On the other hand, we did not find a consistent phenomenon of niche expansion and density compensation was only found for Celastrina argioulus and Gonepteryx cleopatra. Given the absence of habitat specialists on islands and the severe population declines taking place amongst specialist species on mainland Catalonia in the past two decades, we expected to detect more positive trends in island butterfly communities. Instead, we noted widespread declines, comparable to those previously recorded on the continent. Both the extension of the summer drought on Menorca and general habitat degradation due to the abandonment of cattle and sheep grazing may be responsible for these general declines.
Publisher version (URL)http://doi.org/10.1007/s10531-019-01764-1
URIhttp://hdl.handle.net/10261/201564
DOI10.1007/s10531-019-01764-1
ISSN0960-3115
E-ISSN1572-9710
Appears in Collections:(IMEDEA) Artículos
(CREAF) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.