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TZUNTIL:20271031T010000Z
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DTSTART:20251026T030000
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UID:www.bayceer.uni-bayreuth.de-bayceer-t175489id
DTSTAMP:20260627T062331Z
DESCRIPTION:My research focuses on understanding ecosystem processes in aqu
 atic environments and the role of microbial and biogeochemical interaction
 s across systems. Building on a background in ocean microbiology\, this ta
 lk explores how stable isotope approaches developed in marine research can
  be applied to lakes to quantify ecosystem metabolism under environmental 
 change. I combine short‑term 13C bicarbonate incubations with stable isoto
 pes of dissolved oxygen (18O\, with perspectives on triple oxygen isotopes
 ) to quantify primary production\, respiration\, and metabolic balance acr
 oss different temporal scales. Using examples from clear‑water lakes\, inc
 luding in situ mesocosm experiments\, I demonstrate how shifts in light cl
 imate\, nutrient availability\, and physical mixing\, such as those associ
 ated with browning and extreme rainfall events\, influence ecosystem funct
 ioning. The talk highlights how integrating carbon and oxygen isotope meth
 ods improves process‑based understanding of lake responses to global chang
 e.
DTSTART;TZID=Europe/Berlin:20260430T000000
DTEND;TZID=Europe/Berlin:20260430T235959
SUMMARY:Dr. Alexander Frank\, Bayreuth Center for Stable Isotope Research i
 n Ecology and Biogeochemistry (BayCenSI)\, BayCEER (Homepage): Stable Isot
 ope Approaches to Aquatic Ecosystem Function: From Carbon Uptake to Oxygen
  Dynamics under Environmental Change
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