2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 11:00 AM - 11:15 AM | ECOSYSTEM METABOLISM IN TWO NORTHERN ARKANSAS FLOW REGIMES: EXPLORING FLOW-ECOLOGY RELATIONSHIPS IN THE OZARKS | 302C
ECOSYSTEM METABOLISM IN TWO NORTHERN ARKANSAS FLOW REGIMES: EXPLORING FLOW-ECOLOGY RELATIONSHIPS IN THE OZARKS
The natural flow regime controls stream ecosystem processes and functions, but few efforts have examined stream metabolism explicitly within the context of flow regime. Recently, natural flow regimes have been classified within the Ozarks that can be used to establish flow-ecology relationships. We present results from a year-long metabolism study in six forested streams within the two dominant flow regimes in northern Arkansas. We used the single-station method to estimate annual gross primary production (GPP), ecosystem respiration (ER), and net ecosystem metabolism (NEM) in three streams dominated by runoff and groundwater inputs, respectively. We applied groundwater corrections where applicable. Stream types also differed in dominant substrate, number of no flow days, and number of flood events. GPP and ER tended to be greater in groundwater systems (p=0.06, p= 0.08). Net metabolism tended to be more heterotrophic in groundwater streams (p=0.20). Groundwater site metabolism ranged from -687 to 57 (+/- 218) g C m-2 y-1, while runoff sites ranged from -84 to -30 (+/- 16) g C m-2 y-1. Our work reveals potential flow class-specific variation in function within a biome.
- C10 Biogeochemistry
- C14 Hydroecology
- S31 Moving forward in flow ecology: identifying and testing key hypotheses
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Allyn Dodd
(), Lyon College, allyn.dodd@lyon.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Doug Leasure
(), University of Georgia, doug.leasure@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Daniel Magoulick
(), Arkansas Cooperative Fish and Wildlife Research Unit, University of Arkansas, danmag@uark.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Michelle Evans-White
(), University of Arkansas, mevanswh@uark.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -