Disentangling how urbanisation influences moth diversity in grasslands

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Dennis Sanetra
  • Johanna Berger
  • Margarita Hartlieb
  • Nadja K. Simons
  • Genevieve Walther
  • Nico Blüthgen
  • Michael Staab

Urban areas have profound impacts on local species diversity and composition through a set of intertwined changes in the environment. As the world is rapidly urbanising while simultaneously facing a biodiversity crisis, a better understanding of how urbanisation influences biodiversity is necessary. To test if and how urbanisation influences moth diversity and whether urbanisation is acting directly or indirectly via urbanisation-induced increased habitat isolation, smaller habitat area, higher light pollution and increased mowing intensity, we sampled moths with light trapping in 20 grasslands in the urban core of the city of Darmstadt (southwestern Germany) and 20 grasslands in the surrounding area. Moth abundance and diversity decreased with increasing urbanisation. Smaller habitat area and high mowing intensity reduced moth abundance, while other environmental variables including isolation and light pollution had only indirect effects. High levels of urbanisation were associated with reduced moth abundance, which in turn drove declines in diversity. Urbanised sites favoured generalist species and differed in species composition compared to sites in the surrounding. The results show that urbanisation is directly reducing moth abundance and diversity in cities. The negative effect of urbanisation is further attenuated by habitat fragmentation and high mowing intensity, which are both known drivers of biodiversity decline in urban areas and beyond. While urbanisation itself is often irreversible, reducing mowing intensity and preserving larger grassland areas could facilitate moths and other taxa in and around cities.

OriginalspracheEnglisch
ZeitschriftInsect Conservation and Diversity
Jahrgang17
Ausgabenummer2
Seiten (von - bis)229-242
Anzahl der Seiten14
ISSN1752-458X
DOIs
PublikationsstatusErschienen - 03.2024
Extern publiziertJa

Bibliographische Notiz

Publisher Copyright:
© 2024 The Authors. Insect Conservation and Diversity published by John Wiley & Sons Ltd on behalf of Royal Entomological Society.

DOI

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Forschende

  1. Aviva Brin

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