TY - JOUR
T1 - Microcosm study on fate and dynamics of mangrove tannins during leaf litter leaching
AU - Zhou, Hai Chao
AU - Kang, Hui Xing
AU - Wei, Jian
AU - Gao, Chang Jun
AU - Hussain, Muzammil
AU - Fu, Yi Jian
AU - Li, Ming Dang
AU - Li, Feng Lan
AU - Xu, Steven Jing Liang
AU - Lee, Fred Wang Fat
AU - Jiang, Ming Guo
AU - Wang, Yi Bing
AU - Chen, Xiao Xia
AU - Tam, Nora Fung Yee
AU - Lang, Tao
N1 - Publisher Copyright:
© 2023, Institute of Applied Ecology, CAS and Springer-Verlag GmbH, DE.
PY - 2023/12
Y1 - 2023/12
N2 - Background: Mangrove tannins can participate in wetland biogeochemical cycling. However, their fate and dynamics during leaf litter leaching have yet to be elucidated in coastal aquatic environments. Methods: By using a simulated microcosm experiment, changes in leaf litter mass and tannin compounds, including total phenolics (TP), extractable condensed tannins (ECT), and bound condensed tannins (BCT), were examined in the litters and leachates of four common mangrove species: Kandelia obovata (Ko), Aegiceras corniculatum (Ac), Sonneratia apetala (Sa), and Avicennia marina (Am). Results: Leaching caused a notable decline in litter mass, TP, and ECT in the leaf litter of Ko, Ac, Sa, and Am, while BCT increased significantly in Ko and Ac. Loss in foliar TP was higher than in leaf litter mass, and loss in foliar ECT was higher than in TP of Ko and Ac, but Sa showed the opposite result. The temporal changes of TP and ECT concentrations in leachates followed a similar trend, with an initial increase followed by a decrease. ECT dynamics in Ko and Ac leachates correlated with their TP concentrations, while in Sa leachate, the peak ECT occurred 72 h later than its TP peak. The leachate ECT concentrations were highest in Ac, followed by Ko, and significantly lower in Sa. The peak TP and ECT proportions in leachates accounted for 9.2–23.9% and 7.7–9.4% of the total decreases in foliar TP and ECT, respectively. Conclusion: During the leaching process, tannins’ fate was species-specific, while the dynamics were almost similar.
AB - Background: Mangrove tannins can participate in wetland biogeochemical cycling. However, their fate and dynamics during leaf litter leaching have yet to be elucidated in coastal aquatic environments. Methods: By using a simulated microcosm experiment, changes in leaf litter mass and tannin compounds, including total phenolics (TP), extractable condensed tannins (ECT), and bound condensed tannins (BCT), were examined in the litters and leachates of four common mangrove species: Kandelia obovata (Ko), Aegiceras corniculatum (Ac), Sonneratia apetala (Sa), and Avicennia marina (Am). Results: Leaching caused a notable decline in litter mass, TP, and ECT in the leaf litter of Ko, Ac, Sa, and Am, while BCT increased significantly in Ko and Ac. Loss in foliar TP was higher than in leaf litter mass, and loss in foliar ECT was higher than in TP of Ko and Ac, but Sa showed the opposite result. The temporal changes of TP and ECT concentrations in leachates followed a similar trend, with an initial increase followed by a decrease. ECT dynamics in Ko and Ac leachates correlated with their TP concentrations, while in Sa leachate, the peak ECT occurred 72 h later than its TP peak. The leachate ECT concentrations were highest in Ac, followed by Ko, and significantly lower in Sa. The peak TP and ECT proportions in leachates accounted for 9.2–23.9% and 7.7–9.4% of the total decreases in foliar TP and ECT, respectively. Conclusion: During the leaching process, tannins’ fate was species-specific, while the dynamics were almost similar.
KW - Condensed tannins
KW - Leaching
KW - Leaf litter decomposition
KW - Mangrove tannins
KW - Total phenolics
UR - http://www.scopus.com/inward/record.url?scp=85168658034&partnerID=8YFLogxK
U2 - 10.1186/s13717-023-00453-w
DO - 10.1186/s13717-023-00453-w
M3 - Article
AN - SCOPUS:85168658034
VL - 12
JO - Ecological Processes
JF - Ecological Processes
IS - 1
M1 - 37
ER -