Journal article
Microbial micropatches within microbial hotspots
PloS one, Vol.13(5), e0197224
2018
Abstract
The spatial distributions of organism abundance and diversity are often heterogeneous. This includes the sub-centimetre distributions of microbes, which have ‘hotspots’ of high abundance, and ‘coldspots’ of low abundance. Previously we showed that 300 μl abundance hotspots, coldspots and background regions were distinct at all taxonomic levels. Here we build on these results by showing taxonomic micropatches within these 300 μl microscale hotspots, coldspots and background regions at the 1 μl scale. This heterogeneity among 1 μl subsamples was driven by heightened abundance of specific genera. The micropatches were most pronounced within hotspots. Micropatches were dominated by Pseudomonas, Bacteroides, Parasporobacterium and Lachnospiraceae incertae sedis, with Pseudomonas and Bacteroides being responsible for a shift in the most dominant genera in individual hotspot subsamples, representing up to 80.6% and 47.3% average abundance, respectively. The presence of these micropatches implies the ability these groups have to create, establish themselves in, or exploit heterogeneous microenvironments. These genera are often particle-associated, from which we infer that these micropatches are evidence for sub-millimetre aggregates and the aquatic polymer matrix. These findings support the emerging paradigm that the microscale distributions of planktonic microbes are numerically and taxonomically heterogeneous at scales of millimetres and less. We show that microscale microbial hotspots have internal structure within which specific local nutrient exchanges and cellular interactions might occur.
Details
- Title
- Microbial micropatches within microbial hotspots
- Authors/Creators
- L.M. Dann (Author/Creator) - Flinders UniversityJ.C. McKerral (Author/Creator) - Flinders UniversityR.J. Smith (Author/Creator) - Flinders UniversityS.S. Tobe (Author/Creator) - Flinders UniversityJ.S. Paterson (Author/Creator) - Flinders UniversityJ.R. Seymour (Author/Creator) - University of Technology SydneyR.L. Oliver (Author/Creator) - CSIRO Land and WaterJ.G. Mitchell (Author/Creator) - Flinders University
- Publication Details
- PloS one, Vol.13(5), e0197224
- Publisher
- Public Library of Science
- Identifiers
- 991005544256307891
- Copyright
- © 2018 Dann et al.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.154 Phytoplankton Dynamics
- Web Of Science research areas
- Microbiology
- ESI research areas
- Multidisciplinary