2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 9:00 AM - 9:15 AM | NAVIGATING THE BOUNDARY BETWEEN GREEN AND BROWN: WHERE, WHEN, AND HOW DO AUTOTROPH-HETEROTROPH INTERACTIONS AFFECT AQUATIC SYSTEMS? | 321
NAVIGATING THE BOUNDARY BETWEEN GREEN AND BROWN: WHERE, WHEN, AND HOW DO AUTOTROPH-HETEROTROPH INTERACTIONS AFFECT AQUATIC SYSTEMS?
Many approaches in ecosystem ecology focus on separate pathways of energy flow based on either autotrophy or heterotrophy (“green” or “brown” systems, respectively). While these two pathways are easily separated by concept and methodology, recent research from freshwaters suggests autotrophy and heterotrophy often occur in close proximity and interact in complex ways. Studies investigating algal-bacterial and algal-fungal interactions, for example, point to a range of possible interactions including competition, mutualism, and priming effects that depend on environmental factors and can alter organic matter processing. Further blurring distinctions between trophic pathways, studies increasingly suggest primary consumers do not feed exclusively in either brown or green food webs. This omnivory complicates trophic classification, and its nutritional significance is important to understand autotrophic, heterotrophic, and non-living organic matter as the basis of consumer growth and fitness. In this presentation, we introduce topics crossing the boundary between green and brown to understand organism- to ecosystem-level responses to light regime, nutrient availability, temperature, and other factors that affect autotroph-heterotroph interactions. We and fellow special session presenters will highlight current knowledge and provide direction for future inquiry at this important yet complex interface in aquatic systems.
- Bacteria
- Brown Web
- Light
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Presenters/Authors
Halvor Halvorson
(), University of Southern Mississippi, Halvor.Halvorson@usm.edu;
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Caleb J. Robbins
(), Baylor University, Caleb_Robbins@baylor.edu;
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Kevin Kuehn
(), The University of Southern Mississippi, kevin.kuehn@usm.edu;
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