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Citations since 2016
7 Research Items
My research links protistology, palaeoclimatology and oceanography; focussing on the ways that changes in the Southern Ocean can be reconstructed from their impact on terrestrial environments in the sub-Antarctic.
Freshwater peatlands are carbon accumulating ecosystems where primary production exceeds organic matter decomposition rates in the soil, and therefore perform an important sink function in global carbon cycling. Typical peatland plant and microbial communities are adapted to the waterlogged, often acidic and low nutrient conditions that characteris...
Unicellular free-living microbial eukaryotes of the order Arcellinida (Tubulinea; Amoebozoa) and Euglyphida (Cercozoa; SAR), commonly termed testate amoebae, colonise almost every freshwater ecosystem on Earth. Patterns in the distribution and productivity of these organisms are strongly linked to abiotic conditions—particularly moisture availabili...
The salinisation of many coastal ecosystems is underway and is expected to continue into the future because of sea‐level rise and storm intensification brought about by the changing climate. However, the response of soil microbes to increasing salinity conditions within coastal environments is poorly understood, despite their importance for nutrien...
We undertook multiproxy analyses on two sediment cores from Lago Pato, a small lake basin at 51°S topographically separated from Lago del Toro in Torres del Paine (TdP), to provide insights into glacier dynamics and lake level change in the TdP and Última Esperanza region over the last ~30,000 cal a BP (30 ka). Lago Pato is situated in a region ove...
We undertook multi-proxy analyses on two sediment cores from Lago Pato, a small lake basin at 51°S topographically separated from Lago del Toro in Torres del Paine (TdP), to provide insights into glacier dynamics and lake-level change in the TdP and Última Esperanza region over the last ∼30,000 cal a BP (30 ka). Lago Pato is situated in a region ov...
Testate amoebae are a common group of amoeboid protists that build shells (called tests). They occur in soils, freshwater habitats, and to a lesser extent marine environments. They play a key role in microbial foodwebs and are useful bioindicators due to their responses to major ecological gradients (e.g. water availability, pH and nutrients). Their shells allow species-level identification and are preserved in sediments, peat and dried or frozen soil or moss samples, and they are commonly used in palaeoecology for quantitative inference and as model organisms for microbial biogeography. The literature on testate amoebae includes many ancient publications, in different languages and is often hard to find and stored in different private archives. Our goal is to compile the existing data in a user-friendly, open database which will facilitate the study of testate amoebae. This will have positive implications for their use in the study of testate amoeba biodiversity, biogeography, their functional roles and interactions with other organisms. It will also allow defining knowledge gaps and research priorities. In this global effort, we aim to build several databases for testate amoebae: 1) Original taxonomic descriptions (and translations) 2) Biometry and trait data 3) Geographical distribution 4) Diversity and community data (density, relative abundance) and associated metadata (especially quantitative ecological information, vegetation etc.). International Society for Testate Amoeba Research http://istar.wikidot.com/