114580 final.pdf (919.49 kB)
Download fileAge-related environmental gradients influence invertebrate distribution in the Prince Charles Mountains, East Antarctica
journal contribution
posted on 2023-05-19, 02:08 authored by Czechowski, P, White, D, Laurence ClarkeLaurence Clarke, McKay, A, Cooper, A, Stevens, MIThe potential impact of environmental change on terrestrial Antarctic ecosystems can be explored by inspecting biodiversity patterns across large-scale gradients. Unfortunately, morphology-based surveys of Antarctic invertebrates are time-consuming and limited by the cryptic nature of many taxa. We used biodiversity information derived from high-throughput sequencing (HTS) to elucidate the relationship between soil properties and invertebrate biodiversity in the Prince Charles Mountains, East Antarctica. Across 136 analysed soil samples collected from Mount Menzies, Mawson Escarpment and Lake Terrasovoje, we found invertebrate distribution in the Prince Charles Mountains significantly influenced by soil salinity and/or sulfur content. Phyla Tardigrada and Arachnida occurred predominantly in low-salinity substrates with abundant nutrients, whereas Bdelloidea (Rotifera) and Chromadorea (Nematoda) were more common in highly saline substrates. A significant correlation between invertebrate occurrence, soil salinity and time since deglaciation indicates that terrain age indirectly influences Antarctic terrestrial biodiversity, with more recently deglaciated areas supporting greater diversity. Our study demonstrates the value of HTS metabarcoding to investigate environmental constraints on inconspicuous soil biodiversity across large spatial scales.
History
Publication title
Royal Society Open ScienceIssue
12Article number
160296Number
160296Pagination
1-11ISSN
2054-5703Department/School
Institute for Marine and Antarctic StudiesPublisher
The Royal Society PublishingPlace of publication
United KingdomRights statement
Copryght 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.Repository Status
- Open