Disturbance relicts in a rapidly changing world

The rapa nui (Easter Island) factor

J. Judson Wynne, Ernest C. Bernard, Francis G. Howarth, Stefan A Sommer, Felipe N. Soto-Adames, Stefano Taiti, Edward L. Mockford, Mark Horrocks, Lázaro Pakarati, Victoria Pakarati-Hotus

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Caves are considered buffered environments in terms of their ability to sustain near-constant microclimatic conditions. However, cave entrance environments are expected to respond rapidly to changing conditions on the surface. Our study documents an assemblage of endemic arthropods that have persisted in Rapa Nui caves, despite a catastrophic ecological shift, overgrazing, and surface ecosystems dominated by invasive species. We discovered eight previously unknown endemic species now restricted to caves - a large contribution to the island's natural history, given its severely depauperate native fauna. Two additional species, identified from a small number of South Pacific islands, probably arrived with early Polynesian colonizers. All of these animals are considered disturbance relicts - species whose distributions are now limited to areas that experienced minimal historical human disturbance. Extinction debts and the interaction of global climate change and invasive species are likely to present an uncertain future for these endemic cavernicoles.

Original languageEnglish (US)
Pages (from-to)711-718
Number of pages8
JournalBioScience
Volume64
Issue number8
DOIs
StatePublished - 2014

Fingerprint

Polynesia
Pacific Ocean Islands
caves
Introduced Species
invasive species
Pacific Islands
debt
overgrazing
Arthropods
Climate Change
Natural History
natural history
Islands
Ecosystem
arthropods
indigenous species
extinction
biogeography
climate change
fauna

Keywords

  • Caves
  • Disturbance relict hypothesis
  • Ecological shifts
  • Endemic species
  • Fern-moss gardens

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Wynne, J. J., Bernard, E. C., Howarth, F. G., Sommer, S. A., Soto-Adames, F. N., Taiti, S., ... Pakarati-Hotus, V. (2014). Disturbance relicts in a rapidly changing world: The rapa nui (Easter Island) factor. BioScience, 64(8), 711-718. https://doi.org/10.1093/biosci/biu090

Disturbance relicts in a rapidly changing world : The rapa nui (Easter Island) factor. / Wynne, J. Judson; Bernard, Ernest C.; Howarth, Francis G.; Sommer, Stefan A; Soto-Adames, Felipe N.; Taiti, Stefano; Mockford, Edward L.; Horrocks, Mark; Pakarati, Lázaro; Pakarati-Hotus, Victoria.

In: BioScience, Vol. 64, No. 8, 2014, p. 711-718.

Research output: Contribution to journalArticle

Wynne, JJ, Bernard, EC, Howarth, FG, Sommer, SA, Soto-Adames, FN, Taiti, S, Mockford, EL, Horrocks, M, Pakarati, L & Pakarati-Hotus, V 2014, 'Disturbance relicts in a rapidly changing world: The rapa nui (Easter Island) factor', BioScience, vol. 64, no. 8, pp. 711-718. https://doi.org/10.1093/biosci/biu090
Wynne, J. Judson ; Bernard, Ernest C. ; Howarth, Francis G. ; Sommer, Stefan A ; Soto-Adames, Felipe N. ; Taiti, Stefano ; Mockford, Edward L. ; Horrocks, Mark ; Pakarati, Lázaro ; Pakarati-Hotus, Victoria. / Disturbance relicts in a rapidly changing world : The rapa nui (Easter Island) factor. In: BioScience. 2014 ; Vol. 64, No. 8. pp. 711-718.
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