EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/06/2017 | 2:15 PM - 2:30 PM | EXPERIMENTAL STREAM WARMING EFFECTS ON MAYFLY GROWTH RATES ACROSS ELEVATION GRADIENTS: A TEMPERATE-TROPICAL COMPARISON | 306B
EXPERIMENTAL STREAM WARMING EFFECTS ON MAYFLY GROWTH RATES ACROSS ELEVATION GRADIENTS: A TEMPERATE-TROPICAL COMPARISON
Climate change is anticipated to impact ecosystems worldwide, yet there is little consensus about how this impact will differ across temperate and tropical ecosystems. The Climate Variability Hypothesis predicts that organisms in temperate regions, which experience seasonal temperature fluctuations, will be less vulnerable to warming compared to their tropical counterparts, where temperatures are more stable. To understand how aquatic organisms respond to stream warming, we used streamside mesocosms to measure growth rates in Baetidae mayflies under elevated temperatures (relative to ambient) in both the Colorado Rockies and the Ecuadorian Andes. Warming effects followed expectations, temperate populations showed faster growth rates at higher temperatures in low elevation, while high elevation Baetidae had the fastest growth rates at low temperature. Overall mayfly growth rates were higher in Colorado than in Ecuador (at similar temperatures). In tropical populations increasing temperature of high elevation Baetidae did not lead to faster growth rates, but did increase mortality rates. These results suggest differential metabolic thresholds for tropical vs temperate mayflies and suggest that tropical populations may be more vulnerable to climate change than their temperate counterparts.
- C20 Climate Change
- C22 Disturbance
- S09 The importance of environmental gradients for the advance of tropical stream ecology
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
Andrea Landeira-Dabarca
(), Universidad San Francisco de Quito, andrealandab@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Amanda Rugenski
(), University of Georgia, atrugenski@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Carla L. Atkinson
(), University of Alabama, carlalatkinson@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Steven Thomas
(), School of Natural Resources, University of Nebraska-Lincoln, Lincoln, sthomas5@unl.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Andrea C. Encalada
(), Instituto BIOSFERA, Universidad San Francisco de Quito, Cumbayá, Ecuador Biológicas y Ambientales, Universidad San Francisco de Quito, Cumbaya, Ecuador, aencalada@usfq.edu.ec;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
LeRoy Poff
(), Colorado State University, n.poff@rams.colostate.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Alexander Flecker
(), Cornell University, Ithaca, NY, USA, asf3@cornell.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -