Shrinking forest shrinks skink

Morphological change in response to rainforest fragmentation in the prickly forest skink (Gnypetoscincus queenslandiae)

Joanna Sumner*, Craig Moritz, Richard Shine

*Corresponding author for this work

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Large-scale fragmentation of rainforest occurred on the Atherton Tableland in the Australian Wet Tropics from 50 to 100 years ago, leaving numerous fragments of varying sizes. Eleven fragments (from <1 to 75 ha in area) and eight continuous-forest sites were studied to assess the effects of fragmentation on the morphology and demography of the rainforest-endemic prickly forest skink (Gnypetoscincus queenslandiae). Skink abundance (number of individuals captured per hour of search effort) was significantly greater in continuous forest than in forest fragments. Moreover, both skink abundance and the availability of decaying logs, which provide key habitat for this species, increased with fragment area. Fragments contained a smaller proportion of adults, and individuals in fragments were smaller on average for all measured morphological features, than those in continuous forest. Thus, although prickly forest skinks appear to be maintaining populations in rainforest remnants, they are nonetheless being affected by fragmentation. These demographic and morphological changes may be caused by alterations in habitat and prey availability and/or by microclimatic changes associated with edge effects.

Original languageEnglish
Pages (from-to)159-167
Number of pages9
JournalBiological Conservation
Volume91
Issue number2-3
DOIs
Publication statusPublished - Dec 1999
Externally publishedYes

Keywords

  • Demographic changes
  • Edge effects
  • Gnypetoscincus queenslandiae
  • Habitat fragmentation
  • Morphological changes
  • North Queensland
  • Prickly forest skink
  • Tropical rainforest

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