2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/05/2017 | 3:15 PM - 3:30 PM | SYNCHRONICITY OF INSECT EMERGENCE ACROSS A RIVER-FLOODPLAIN MOSAIC | 301A
SYNCHRONICITY OF INSECT EMERGENCE ACROSS A RIVER-FLOODPLAIN MOSAIC
Emergence of adult aquatic insects constitutes a resource flux that can influence a suite of terrestrial insectivores, and the relative importance of these emergence pulses to recipient food webs is largely determined by their timing and duration. Spatial heterogeneity may play a critical role in mediating the availability of these subsidies by creating patchiness, not just in magnitude of these fluxes, but in their temporal dynamics. Variability in environmental conditions across habitats within a landscape may desynchronize timing of emergence pulses, thereby prolonging availability of emergent insects to predators across that landscape. Different habitats may yield complementary or supplementary emergence patterns and predator mobility likely mediates their ability to capitalize on such fluxes. We conducted a year-round study of emergence across a mosaic of 7 habitats that varied in physical characteristics (e.g., thermal and flow regime) within the Snake River-floodplain in southeastern Idaho. Here, we present results from an analysis of the degree of synchronicity in the spectra of emergence from these habitats, and evaluate the contributions of habitat heterogeneity, life history variation, and composition of the insect community to these temporal dynamics.
- C25 Food Webs
- S14 Stressors in linked aquatic-terrestrial ecosystems: New developments and solutions
- C28 Land-Water Interfaces
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Presenters/Authors
Jade Ortiz
(), Idaho State University, ortijade@isu.edu;
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Colden Baxter
(), Idaho State University, baxtcold@isu.edu;
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