2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

5/21/2018 | 2:30 PM - 2:45 PM | HIGH BETA-DIVERSITY OF URBANIZED STREAM MICROBIAL COMMUNITIES | 310 A

HIGH BETA-DIVERSITY OF URBANIZED STREAM MICROBIAL COMMUNITIES

Watershed urbanization is known to change microbial community composition in headwater streams. Most research on the impact of stream urbanization on microbial communities measure only the intensity of urban impacts. Yet, urbanization is a heterogeneous process: urbanized stream beds can be composed of natural or artificial substrates, encased in cement, or heavily incised. Further, presence or absence of riparian canopy cover can also strongly influence microbial habitats. Existing studies that classify stream urbanization based solely on watershed impervious cover do not capture the diversity of microbes among urbanized watersheds. Thus, less attention has been paid to microbial communities across different urbanized stream habitats. We assessed microbial communities from 20 streams in Connecticut, USA using 16S rDNA sequenced with Illumina MiSeq. We found that microbial communities were related stream watershed impervious cover, but with a high degree of beta-diversity across urbanized stream sites. We linked this diversity between urbanized streams to differences in stream bed, water chemistry, and riparian cover that were not linked to the intensity of watershed urbanization. We argue that diversity of urbanized stream microbial communities will have implications for nutrient cycling and food web structure.

Urban
Biogeochemistry
Community

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Presenters/Authors

Jacob Hosen (), Purdue University, jhosen@purdue.edu;