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![[Higgins, Ecol Mono, 2010]
Bacteria 0 ? ? ?
Invasion of the Dreissenids
The difference a species makes](https://image.slidesharecdn.com/13denefinvasive-species-freshwater-microbial-communities-160202155324/75/The-Difference-a-Species-Makes-on-Freshwater-Microbial-Communities-4-2048.jpg)
![Biota
Phytoplankton
Micro/nanozooplankton
Phototrophic
bacteria
Ecosystem
impacts
Chemotrophic
Bacteria (benthic-pelagic)
Microbial – higher
food web connectivity
Geochemical cycling
(e.g. CO2 efflux)
[Buffam et al, GCB, 2011]
July ‘99
July ‘10
[Credit: Vanderploeg, GLERL]
Chl a concentration
Impacts on bacterial communities
[Credit: Vanderploeg, GLERL]
Harmful algal blooms
(e.g., Microcystis)
The difference a species makes](https://image.slidesharecdn.com/13denefinvasive-species-freshwater-microbial-communities-160202155324/75/The-Difference-a-Species-Makes-on-Freshwater-Microbial-Communities-5-2048.jpg)
The Difference a Species Makes on Freshwater Microbial Communities
This document summarizes research on the impact of invasive quagga mussels on freshwater microbial communities. Specifically, it discusses 1) feeding experiments that showed quagga mussels significantly reduced bacteria populations compared to control samples, and 2) field observations noting lower bacterial abundances and changes in bacterial composition in lakes invaded by quagga mussels compared to non-invaded lakes. The research suggests invasive species can significantly impact native microbial communities through trophic interactions and biogeochemical cycling.
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The Difference a Species Makes on Freshwater Microbial Communities
- 1. Vincent Denef Ecology andEvolutionary Biology, University of Michigan Water @ Michigan January 21, 2016 The difference a species makes: impact of invasive species on freshwater microbial communities @VJDenef vdenef@umich.edu
- 2. The difference aspecies makes Texasinvasives.org Invasion of the Dreissenids
- 3. [Credit: Nalepa, GLERL Invasionof the Dreissenids The difference a species makes
- 4. [Higgins, Ecol Mono,2010] Bacteria 0 ? ? ? Invasion of the Dreissenids The difference a species makes
- 5. Biota Phytoplankton Micro/nanozooplankton Phototrophic bacteria Ecosystem impacts Chemotrophic Bacteria (benthic-pelagic) Microbial –higher food web connectivity Geochemical cycling (e.g. CO2 efflux) [Buffam et al, GCB, 2011] July ‘99 July ‘10 [Credit: Vanderploeg, GLERL] Chl a concentration Impacts on bacterial communities [Credit: Vanderploeg, GLERL] Harmful algal blooms (e.g., Microcystis) The difference a species makes
- 6. Source water: LakeMI M45, 100 micron pre-filtered Quagga mussels: Lake MI M45, cleaned and acclimated in lab for 12 hrs 20L 3 hrs 4 °C 20L 20L 20L X 3 X 4 X 3 X 4 16S rRNA V4 sequencing Tom Johengen Hank Vaderploeg Experimental design Feeding experiments
- 7. * = statisticallysignificant difference (LEfSe, p < 0.05) Impacts on bacterial communities: feeding experiment Feeding experiments
- 8. Impacts on bacterialcommunities: field observations Field observations
- 9. Impacts on bacterialcommunities: field observations Field observations
- 10. Acknowledgments NOAA GLERL Ashley Baldridge JoannCavaletto Jim Liebig Ed Rutherford Henry Vanderploeg Crew of the R/V Laurentian University of Michigan Michelle Berry Ashley Burtner Edna Chiang * Seana Florida * Masanori Fujimoto *** Thomas Johengen Ann McCarthy Ryan Keeling * Morgan Meade * Justin Millar Tom Nalepa Danna Palladino Marian Schmidt ** Amelia Waters * Amadeus Twu * Support