MM44A:
Functional, Ecological, and Evolutionary Implications of Microdiversity and Intraspecific Variability in Aquatic Microorganisms I Posters


Session ID#: 29912

Session Description:
Many aquatic microorganisms exist as diverse genetic clusters, rather than clone-like populations. However, the implications of this variability remain unclear. In some instances, this microheterogeneity has been linked to differences in distribution and function, known as ecotypes. We expect that intra-specific trait variability plays an important role in determining the outcome of inter-specific competition, and hence overall biodiversity. On one hand, intra-specific variability can cause niche overlapping, thereby reducing diversity, at least as systems approach steady state. On the other hand, intra-specific variability can also reduce fitness differences, thereby lengthening extinction timescales and sustaining diversity in dynamic environments. In general, however, it remains unclear how aquatic microorganisms diversify and evolve into genetically and ecologically different populations.

Recent methodological advances including high throughput sequencing, informatics, and metabolomics are being applied to investigate genetic variation, evolutionary events, and functional differentiation within sets of closely related microorganisms. Such studies seek to understand the influence of microdiversity on the stability, resilience, biodiversity, and function of ecosystems. Submissions to this session investigate the impact of microdiversity on the ecology, evolution, and function of populations of microorganisms in aquatic systems using any approach, including theoretical analysis, numerical modeling, observational and experimental studies.

Primary Chair:  Sherwood Lan Smith, JAMSTEC Japan Agency for Marine-Earth Science and Technology, RCGC, Kanagawa, Japan
Co-chairs:  Michael S Rappe, University of Hawaii at Manoa, Honolulu, HI, United States, Bingzhang Chen, Japan Agency for Marine-Earth Science and Technology, RCGC, Yokohama, Japan and David Needham, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States
Moderators:  Sherwood Lan Smith, JAMSTEC Japan Agency for Marine-Earth Science and Technology, RCGC, Kanagawa, Japan, Bingzhang Chen, JAMSTEC Japan Agency for Marine-Earth Science and Technology, RCGC, Yokohama, Japan, David Needham, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States and Michael S Rappe, University of Hawaii at Manoa, Honolulu, HI, United States
Student Paper Review Liaison:  David Needham, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States
Index Terms:

4813 Ecological prediction [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4817 Food webs, structure, and dynamics [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4858 Population dynamics and ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • B - Biodiversity
  • ES - Ecology and Social Interactions
  • OM - Ocean Modeling

Abstracts Submitted to this Session:

Two groups of dimethylsulfoniopropionate (DMSP) producers with significantly different production dynamics (315716)
Erin McParland and Naomi Marcil Levine, University of Southern California, Los Angeles, CA, United States
Intraspecifc Variation in Cellular Carbon Compartmentalization Across Coccolithophore Morphotypes (323396)
Debora Iglesias-Rodriguez1, Paul G Matson2, Tanika Marie Ladd3 and Zoë S Welch1, (1)University of California Santa Barbara, Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States, (2)University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States, (3)University of California Santa Barbara, Interdepartmental Graduate Program in Marine Science, Santa Barbara, CA, United States
Genomic Capacity of Prochlorococcus in the Oxygen Deficient Zone of the Eastern Tropical North Pacific (325463)
Natalie Ann Kellogg1, Clara A Fuchsman2 and Gabrielle Rocap2, (1)University of Washington, Seattle, WA, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States
The Ecology, Physiology, and Genomic Analysis of Novel SAR11 Isolates (320116)
V. Celeste Lanclos, Michael W Henson and Cameron Thrash, Louisiana State University, Biological Sciences, Baton Rouge, LA, United States
Cultivation, genomics, and characterization of the first isolate from the freshwater SAR11 clade LD12 (318681)
Michael W Henson1, Cameron Thrash1, V. Celeste Lanclos1 and Brant C. Faircloth1,2, (1)Louisiana State University, Biological Sciences, Baton Rouge, LA, United States, (2)Louisiana State University, Museum of Natural Science, Baton Rouge, LA, United States
Microdiversity in Marine Viral Populations Provides Insight into the Dynamics of Viral-Host Interactions (309586)
Marcia Marston, Roger Williams University, Department of Biology and Marine Biology, Bristol, RI, United States

See more of: Microbiology and Molecular Ecology