Faculty Sponsor
Dr. Michael Aspinwall
Faculty Sponsor College
College of Arts and Sciences
Faculty Sponsor Department
Biology
Location
SOARS Virtual Conference
Presentation Website
https://unfsoars.domains.unf.edu/exploring-patterns-of-thermal-acclimation-of-leaf-respiration-in-a-marsh-mangrove-ecotone/
Keywords
SOARS (Conference) (2020 : University of North Florida) -- Posters; University of North Florida. Office of Undergraduate Research; University of North Florida. Graduate School; College students – Research -- Florida – Jacksonville -- Posters; University of North Florida – Graduate students – Research -- Posters; University of North Florida. Department of Biology -- Research -- Posters; Biology; Physics; and Chemistry -- Research – Posters
Abstract
Vegetated coastal ecosystems (saltmarsh, mangroves) make a large contribution to global net primary productivity and C cycling despite covering a small proportion of the earth’s surface. Yet, our understanding of C cycling processes over space and time and in response to temperature remain limited for these ecosystems. At the global scale, respiration is the second largest flux of C (behind photosynthesis), and ~50% of respiration comes from leaves. Respiration is also a key parameter for global models that predict climate-carbon cycle interactions. But respiratory responses to temperature in marsh and mangrove species remain uncertain. Here, we repeatedly measured short-term temperature responses of leaf respiration in a C4 marsh grass species (Spartina alterniflora) and a C3 mangrove species (Avicennia germinans) growing under ambient temperatures and experimental warming at two sites in Florida. We tested whether marsh grasses and mangroves show similar acclimation of leaf respiration to seasonal temperature changes at sites differing in temperature seasonality, and whether acclimation is consistent between plants grown under ambient and warmed conditions.
Included in
Exploring patterns of thermal acclimation of leaf respiration in a marsh-mangrove ecotone
SOARS Virtual Conference
Vegetated coastal ecosystems (saltmarsh, mangroves) make a large contribution to global net primary productivity and C cycling despite covering a small proportion of the earth’s surface. Yet, our understanding of C cycling processes over space and time and in response to temperature remain limited for these ecosystems. At the global scale, respiration is the second largest flux of C (behind photosynthesis), and ~50% of respiration comes from leaves. Respiration is also a key parameter for global models that predict climate-carbon cycle interactions. But respiratory responses to temperature in marsh and mangrove species remain uncertain. Here, we repeatedly measured short-term temperature responses of leaf respiration in a C4 marsh grass species (Spartina alterniflora) and a C3 mangrove species (Avicennia germinans) growing under ambient temperatures and experimental warming at two sites in Florida. We tested whether marsh grasses and mangroves show similar acclimation of leaf respiration to seasonal temperature changes at sites differing in temperature seasonality, and whether acclimation is consistent between plants grown under ambient and warmed conditions.
https://digitalcommons.unf.edu/soars/2020/spring_2020/118