High Resolution Spatial Mapping of Human Footprint across Antarctica and Its Implications for the Strategic Conservation of Avifauna

PLoS One. 2017 Jan 13;12(1):e0168280. doi: 10.1371/journal.pone.0168280. eCollection 2017.

Abstract

Human footprint models allow visualization of human spatial pressure across the globe. Up until now, Antarctica has been omitted from global footprint models, due possibly to the lack of a permanent human population and poor accessibility to necessary datasets. Yet Antarctic ecosystems face increasing cumulative impacts from the expanding tourism industry and national Antarctic operator activities, the management of which could be improved with footprint assessment tools. Moreover, Antarctic ecosystem dynamics could be modelled to incorporate human drivers. Here we present the first model of estimated human footprint across predominantly ice-free areas of Antarctica. To facilitate integration into global models, the Antarctic model was created using methodologies applied elsewhere with land use, density and accessibility features incorporated. Results showed that human pressure is clustered predominantly in the Antarctic Peninsula, southern Victoria Land and several areas of East Antarctica. To demonstrate the practical application of the footprint model, it was used to investigate the potential threat to Antarctica's avifauna by local human activities. Relative footprint values were recorded for all 204 of Antarctica's Important Bird Areas (IBAs) identified by BirdLife International and the Scientific Committee on Antarctic Research (SCAR). Results indicated that formal protection of avifauna under the Antarctic Treaty System has been unsystematic and is lacking for penguin and flying bird species in some of the IBAs most vulnerable to human activity and impact. More generally, it is hoped that use of this human footprint model may help Antarctic Treaty Consultative Meeting policy makers in their decision making concerning avifauna protection and other issues including cumulative impacts, environmental monitoring, non-native species and terrestrial area protection.

MeSH terms

  • Animals
  • Antarctic Regions
  • Biodiversity*
  • Birds / physiology*
  • Conservation of Natural Resources*
  • Demography / statistics & numerical data*
  • Ecosystem
  • Environmental Monitoring
  • Geographic Mapping*
  • Human Activities / statistics & numerical data*
  • Humans

Grants and funding

This research was funded by Ministerio de Economía y Competitividad (Spain) under project CTM2013-47381-P. KH was supported by National Environment Research Council (NERC) core funding to the British Antarctic Survey’s programme ‘Environment Office – Long Term Monitoring and Survey’ (EOLTMS).