2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 2:45 PM - 3:00 PM | ASSESSING BIOGEOGRAPHIC GAPS IN BACTERIAL DIVERSITY KNOWLEDGE: A GLOBAL REVIEW OF LOTIC HABITATS | 330 A
ASSESSING BIOGEOGRAPHIC GAPS IN BACTERIAL DIVERSITY KNOWLEDGE: A GLOBAL REVIEW OF LOTIC HABITATS
Freshwaters account for 0.01% of Earth’s water, 0.8% of surface area, yet supports ~10% of all known species making them disproportionately biodiverse compared to marine and terrestrial habitats. Molecular techniques have only recently been implemented to describe microbial diversity, thus we hypothesize that geographic coverage of microbial diversity knowledge is incomplete. We conducted a literature review to assess the global distribution of lotic habitats in which microbial community diversity has been sampled using modern molecular techniques. We identified 317 studies published from 1998 to 2017 that used metagenomes, next-generation sequencing, community fingerprinting, and cloning to characterize microbial diversity in lotic habitats. Most studies took place in temperate regions of North America (37% of studies), Europe (27%), and Asia (25%), while comparatively few were from tropical regions of South America (4%) and Africa (2%). This geographic bias toward temperate regions mirrors that of macro-organisms, and is likely a consequence of concentration of research institutions and their resources in the developed world. Our review illustrates how the future accumulation of tropical sampling is essential to accurately estimate global microbial diversity and understand its variation with respect to climate and land-use change.
- Biodiversity
- Bacteria
- Spatial
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Presenters/Authors
Allison Veach
(), Oak Ridge National Laboratory, veacham@ornl.gov;
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Matthew Troia
(), University of Tennessee, mtroia@utk.edu;
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Melissa Cregger
(), Oak Ridge National Laboratory, creggerma@ornl.gov;
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