Chown, Steven L; Huiskes, Ad H L; Gremmen, Niek J M; Lee, Jennifer E; Terauds, Aleks; Crosbie, Kim; Frenot, Yves; Hughes, Kevin A; Imura, Satoshi; Kiefer, Kate; Lebouvier, Marc; Raymond, Ben; Tsujimoto, Megumu; Ware, Chris; Van de Vijver, Bart; Bergstrom, Dana Michelle (2012): (Table S4) Number and proportion of visitors that had been to polar/alpine regions in the 12 mo prior to travelling to the Antarctic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.808341, In supplement to: Chown, Steven L; Huiskes, Ad H L; Gremmen, Niek J M; Lee, Jennifer E; Terauds, Aleks; Crosbie, Kim; Frenot, Yves; Hughes, Kevin A; Imura, Satoshi; Kiefer, K; Lebouvier, Marc; Raymond, Ben; Tsujimoto, Megumu; Ware, Chris; Van de Vijver, Bart; Bergstrom, Dana Michelle (2012): Continent-wide risk assessment for the establishment of nonindigenous species in Antarctica. Proceedings of the National Academy of Sciences, 109(13), 4938-4943, https://doi.org/10.1073/pnas.1119787109
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Comment:
Numbers and proportions of visitors were determined by a questionnaire-based survey of 5,659 visitors, proportion of seeds from cold-climate areas (see also Table S2, doi:10.1594/PANGAEA.808340, and the median of these values by visitor category.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Category | Cat | Chown, Steven L | of visitor | ||
| 2 | Number of visitors | Visitors | # | Chown, Steven L | total | |
| 3 | Number of visitors | Visitors | # | Chown, Steven L | that had been to alpine/polar areas | |
| 4 | Proportion | Prop | Chown, Steven L | of visitors to alpine/polar areas | ||
| 5 | Proportion | Prop | Chown, Steven L | of seeds from species occurring in Arctic or sub-Antarctic | ||
| 6 | Median, statistical | Median | Chown, Steven L | of proportion columns |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
48 data points
Data
| 1 Cat (of visitor) | 2 Visitors [#] (total) | 3 Visitors [#] (that had been to alpine/polar...) | 4 Prop (of visitors to alpine/polar a...) | 5 Prop (of seeds from species occurri...) | 6 Median (of proportion columns) |
|---|---|---|---|---|---|
| Ships' crew | 124 | 88 | 0.710 | 0.467 | 0.588 |
| Tourists | 4296 | 2190 | 0.510 | 0.467 | 0.488 |
| Tourist support | 134 | 100 | 0.746 | 0.467 | 0.607 |
| Field scientist | 355 | 212 | 0.597 | 0.467 | 0.532 |
| Station scientist | 285 | 136 | 0.477 | 0.467 | 0.472 |
| Field scientist support | 103 | 61 | 0.592 | 0.467 | 0.530 |
| Station scientist support | 362 | 215 | 0.594 | 0.467 | 0.530 |
| Science (combined) | 1105 | 624 | 0.565 | 0.467 | 0.516 |