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Urban moth communities suggest that life in the city favours thermophilic multi-dimensional generalists
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0001-8022-5004
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0001-6398-1617
Lund University, Sweden.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0001-9598-7618
2020 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 287, no 1928, p. 1-10, article id 20193014Article in journal (Refereed) Published
Abstract [en]

Biodiversity is challenged worldwide by exploitation, global warming, changes in land use and increasing urbanization. It is hypothesized that communities in urban areas should consist primarily of generalist species with broad niches that are able to cope with novel, variable, fragmented, warmer and unpredictable environments shaped by human pressures. We surveyed moth communities in three cities in northern Europe and compared them with neighbouring moth assemblages constituting species pools of potential colonizers. We found that urban moth communities consisted of multi-dimensional generalist species that had larger distribution ranges, more variable colour patterns, longer reproductive seasons, broader diets, were more likely to overwinter as an egg, more thermophilic, and occupied more habitat types compared with moth communities in surrounding areas. When body size was analysed separately, results indicated that city occupancy was associated with larger size, but this effect disappeared when body size was analysed together with the other traits. Our findings indicate that urbanization imposes a spatial filtering process in favour of thermophilic species characterized by high intraspecific diversity and multi-dimensional generalist lifestyles over specialized species with narrow niches.

Place, publisher, year, edition, pages
The Royal Society , 2020. Vol. 287, no 1928, p. 1-10, article id 20193014
Keywords [en]
generalization, global change, moths, specialization, species traits, urbanization
National Category
Evolutionary Biology Ecology
Research subject
Ecology, Evolutionary Biology
Identifiers
URN: urn:nbn:se:lnu:diva-97221DOI: 10.1098/rspb.2019.3014ISI: 000543545100014PubMedID: 32517620Scopus ID: 2-s2.0-85086354083OAI: oai:DiVA.org:lnu-97221DiVA, id: diva2:1454478
Available from: 2020-07-16 Created: 2020-07-16 Last updated: 2021-06-14Bibliographically approved

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Franzén, MarkusBetzholtz, Per-EricForsman, Anders

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