Of cecropias, snarks and boojums

Douglas Sheil*, Michael Padmanaba

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)


We reply to Webber et al. (011). Our study, Sheil and Padmanaba (2011), was a preliminary assessment of the alien Neotropical tree Cecropia around Bogor, West Java, Indonesia. We highlighted the need for low-cost assessment approaches for addressing alien species and considered what might be achieved by local actors with limited resources. We successfully characterised the local distribution of Cecropia and identified, addressed and illustrated various concerns. Based on these results we asked how such studies might be useful and how they could be improved. Webber et al. criticise our study but fail to engage with its goals. Certainly, low-input local approaches lack the sophistication and rigour of larger international efforts, but such comparisons are unhelpful. Aside from a number of misunderstandings, we find Webber et al.’s principal arguments overstated, and unsupported by published information. The evidence that Cecropia causes harm is unconvincing; species-level identification is overemphasised; and the insistence on completing detailed research before considering management options is problematic. We offer some positive conclusions and repeat our plea for the development of effective low-input methods for evaluating and addressing naturalised organisms.

Original languageEnglish
Pages (from-to)295-300
Number of pages6
JournalPlant Ecology and Diversity
Issue number2-3
Publication statusPublished - 2011
Externally publishedYes


  • Alien invasive species
  • Botanic gardens
  • Citizen science
  • Exotic
  • Landscape management
  • Low-cost assessment
  • Naturalised
  • Threat

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