Biodiversity and Conservation

, Volume 26, Issue 11, pp 2657–2673 | Cite as

Enhancing gardens as habitats for plant-associated invertebrates: should we plant native or exotic species?

  • Andrew Salisbury
  • Sarah Al-Beidh
  • James Armitage
  • Stephanie Bird
  • Helen Bostock
  • Anna Platoni
  • Mark Tatchell
  • Ken Thompson
  • Joe Perry
Original Paper
Part of the following topical collections:
  1. Urban biodiversity

Abstract

Domestic gardens, typically consisting of a mixture of native and non-native plants, support biodiversity. The relative value of these native and non-native plants for invertebrates is largely unknown. To address this a replicated field experiment with plots planted with one of three assemblages of non-invasive perennial and shrubby garden plants (treatments), based on plant origin [UK native, near-native (Northern Hemisphere) and Exotic (Southern Hemisphere)] was established. Over 4 years the invertebrates were recorded by Vortis suction sampler and amount of plant material measured. The abundance of above ground plant-inhabiting invertebrates increased with canopy cover and was higher on the native treatment. For several functional groups including herbivores and some predatory groups the near-native plants supported only marginally fewer individuals compared to native plots, with exotic plants being less favoured. The experiment demonstrated that gardens and other cultivated ornamental plantings support a wide range of plant-inhabiting invertebrates from primary functional groups regardless of the plants’ origin and the more plant matter (canopy cover) available the greater the abundance. Greater abundance of invertebrates will be supported by gardens and cultivated planting schemes with plantings biased towards native and near-native plants and that provide dense vegetation cover. However, exotic plants should not be dismissed as these are inhabited by some invertebrates.

Keywords

Canopy cover Functional group Invertebrate abundance Invertebrate herbivore Invertebrate predator Ornamental plants 

Supplementary material

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Supplementary material 1 (DOCX 167 kb)
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Supplementary material 2 (DOCX 2093 kb)
10531_2017_1377_MOESM3_ESM.xlsx (724 kb)
Supplementary material 3 (XLSX 724 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  1. 1.Royal Horticultural Society, RHS Garden WisleySurreyUK
  2. 2.Department of Life Sciences, Whitelands CollegeUniversity of RoehamptonLondonUK
  3. 3.Laurels FarmSherborneUK
  4. 4.Department of Animal and Plant SciencesUniversity of SheffieldSheffieldUK
  5. 5.Oaklands Barn, Lug’s LaneNorfolkUK

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