Date of Award
2010
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Abstract
Hypoxia and sulfide exposure, increased using glucose, are considered major environmental stressors in seagrass communities. Quantum efficiency, total soluble protein and catalase activity were quantified to evaluate the applicability of each of these bioindicators to detect environmental stress in three tropical seagrass species, Thalassia testudinum (Banks ex Kèoenig), Halodule wrightii (Ascherson) and Syringodium filiforme (Kuetz). Hypoxia + sulfide treatments significantly decreased the quantum efficiency of all three species, but showed no response in protein and catalase activity. Although no treatment effect was found, catalase activity was enhanced in T. testudinum leaves and H. wrightii roots relative to other tissues, while S. filiforme showed no location-specific catalase activity. These results indicate that quantum efficiency is a more sensitive indicator than protein and catalase activity to hypoxia and sulfide stress in seagrasses.
Extent
vii, 54 p. : ill.
Recommended Citation
Irwin, Connor., "Biomonitoring of hypoxia and sulfide stress in three sub-tropical seagrasses" (2010). Electronic Theses and Dissertations 2010 - 2019. 23.
https://digitalcommons.fau.edu/etd_general_6/23
Identifier
FADT2976445
Comments
by Connor Irwin.|Title on signature page (p. ii) : Environmental stress biomonitoring in sub-tropical seagrasses.|Thesis (M.S.)--Florida Atlantic University, 2010.|Includes bibliography.|Electronic reproduction. Boca Raton, Fla., 2010. Mode of access: World Wide Web.|by Connor Irwin.