Tannins and nitrogen dynamics in mangrove leaves at different age and decay stages (Jiulong River Estuary,China) |
| |
Authors: | Yi Ming Lin Jin Wen Liu Ping Xiang Peng Lin Zhen Hua Ding Leonel da Silveira Lobo Sternberg |
| |
Institution: | (1) Department of Biology, School of Life Sciences, Xiamen University, Xiamen, 361005, China;(2) Research Center for Wetlands and Ecological Engineering, Xiamen University, Xiamen, 361005, China;(3) Department of Biology, University of Miami, Coral Gables, Florida 33124, USA |
| |
Abstract: | Changes in the total phenolics, condensed tannins (CT), protein-precipitable phenolics content and protein precipitation capacity
were determined on mangrove leaves representing a range of maturation and senescence in the Jiulong River Estuary, Fujian,
China. The results showed that the total phenolics, extractable condensed tannins, total condensed tannins, protein-precipitable
phenolics content and protein precipitation capacity in young leaves were higher than those in mature and senescent leaves.
With leaf maturation and senescence, total pehnolics decreased. The rapid loss of phenolics observed following senescence
and abscission can be ascribed to leaching and degradation. Protein-bound CT and fibre-bound CT tended to increase with leaf
maturity, and decreased with senescence. Protein-bound CT and fibre-bound CT increased with leaf decomposition, with CT binding
more strongly to protein than to fibre. The increases in nitrogen contents and ash free caloric values, and declines in total
phenolics and total condensed tannins of mangrove leaf litter suggests that partially decomposed mangrove detritus is a palatable
heterotrophic substrate, and thus may be an important source of matter and energy for the estuarine food web.
Handling editor: K. Martens |
| |
Keywords: | Aegiceras corniculatum Leaves Protein precipitation capacity Tannins |
本文献已被 SpringerLink 等数据库收录! |
|