2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2019 | 2:00 PM - 2:15 PM | BASIN FEATURES INFLUENCE THE QUANTITY OF AQUATIC INSECT SUBSIDIES REACHING TERRESTRIAL LANDSCAPES | 151 ABC
BASIN FEATURES INFLUENCE THE QUANTITY OF AQUATIC INSECT SUBSIDIES REACHING TERRESTRIAL LANDSCAPES
Aquatic and terrestrial ecosystems are coupled by material and energy fluxes. Although the quantity of aquatic-derived resources reaching the terrestrial environment can control the magnitude of consumer response, attaining spatially explicit estimates of allochthonous inputs are challenging. Among the diversity of linkages between the systems, aquatic insects play a major role in the aquatic-to-terrestrial pathway. The quantity of insects emerging from a stream is a proportion of benthic secondary production which decays with distance from the channel. Here, we first use annual community secondary production (ACSP) values from a recently available global database and emergence-production ratios obtained from the literature to estimate the quantity of insect biomass exported form lotic ecosystems throughout the US. Then, we use relative abundances of aquatic insects with terrestrial adult life-stages (i.e. stoneflies, caddisflies, mayflies, dragonflies and midges) from benthic macroinvertebrate monitoring data to parameterize the subsidy distance-decay relationship. Finally, we apply a machine learning routine to investigate statistical relationships between quantity of emergent insects, rate of decay and basin features. By combining, large-scale datasets, machine learning techniques, and meta-analysis we highlight potential broad-scale controls on aquatic-terrestrial linkages.
- Dispersal
- Food Webs
- Landscape
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Presenters/Authors
Darin Kopp
(), University of Oklahoma, darinkopp@gmail.com;
ASHA DISCLOSURE:
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Nonfinancial -
Daniel Allen
(), University of Oklahoma, dcallen@ou.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -