TY - JOUR
T1 - Comparison of ecophysiological characteristics between introduced and indigenous mangrove species in China
AU - Chen, Luzhen
AU - Tam, Nora F.Y.
AU - Huang, Jianhui
AU - Zeng, Xueqin
AU - Meng, Xiangli
AU - Zhong, Cairong
AU - Wong, Yuk shan
AU - Lin, Guanghui
N1 - Funding Information:
We thank L. Li of the Institute of Botany, CAS, for the analysis of the stable isotopic ratios, Z. Huang in the Administrative Bureau of Dongzhai Harbor Mangroves National Nature Reserve in Haikou, and Y. Wang, Q. Zan and H. Xu in the Administrative Bureau of Neilingding-Futian National Nature Reserve in Shenzhen for their help in the fieldwork. We also appreciate the valuable suggestions from Dr. K.S. Shin and Dr. S.G. Cheung of City University of Hong Kong. This study was partially supported by an NSFC grant to L. Chen (30700092), the “Bairen project” of the Chinese Academy of Sciences to G. Lin, a China Postdoctoral Science Foundation award to L. Chen (20060400529), the Areas of Excellence established under the University Grants Council of the Hong Kong SAR, China (Project No. AoE/P-04/2004) to N. Tam, and a Xiamen University “Minjiang Scholar” program support to G. Lin.
PY - 2008/9/30
Y1 - 2008/9/30
N2 - Due to its rapid growth, the introduced mangrove species Sonneratia apetala from Bangladesh has been widely used in mangrove restoration in southeastern China since 1985. As an indigenous mangrove species in Hainan, China, Sonneratia caseolaris was also planted in Guangdong Province for afforestation purposes. Both species have developed well in their new habitats, but their ecophysiological differences with the native mangrove species have not been studied. In this study, leaf gas exchange, water and nitrogen use efficiencies of two Sonneratia species were compared with those of selected native mangrove species (Avicennia marina, Aegiceras corniculatum, Kandelia candel, and Excoecaria agallocha) in Hainan and Shenzhen. The introduced S. apetala maintained lower carbon assimilation rate (A) and photosynthetic nitrogen use efficiency (PNUE) than the indigenous S. caseolaris. In Shenzhen, the two introduced Sonneratia had comparable photosynthetic rates and water use efficiency (WUE) with the native mangrove species, except that PNUE in S. caseolaris was significantly higher than in the native mangrove species. The two Sonneratia species showed significant overlap in PNUE and long-term WUE. Photosynthetic parameters derived from leaf photosynthetic light-response curves and A-Ci curves also suggested lower carbon assimilation capacities for the introduced Sonneratia than for the native mangrove species in both study sites. The lower light compensation point (LCP) of two introduced Sonneratia in both study sites also indicated a better adaptation to a low light regime than the native mangrove species. The results of photosynthetic capacities indicated that the introduced mangrove species have little competitive advantage over local native mangrove species in their respective new habitats.
AB - Due to its rapid growth, the introduced mangrove species Sonneratia apetala from Bangladesh has been widely used in mangrove restoration in southeastern China since 1985. As an indigenous mangrove species in Hainan, China, Sonneratia caseolaris was also planted in Guangdong Province for afforestation purposes. Both species have developed well in their new habitats, but their ecophysiological differences with the native mangrove species have not been studied. In this study, leaf gas exchange, water and nitrogen use efficiencies of two Sonneratia species were compared with those of selected native mangrove species (Avicennia marina, Aegiceras corniculatum, Kandelia candel, and Excoecaria agallocha) in Hainan and Shenzhen. The introduced S. apetala maintained lower carbon assimilation rate (A) and photosynthetic nitrogen use efficiency (PNUE) than the indigenous S. caseolaris. In Shenzhen, the two introduced Sonneratia had comparable photosynthetic rates and water use efficiency (WUE) with the native mangrove species, except that PNUE in S. caseolaris was significantly higher than in the native mangrove species. The two Sonneratia species showed significant overlap in PNUE and long-term WUE. Photosynthetic parameters derived from leaf photosynthetic light-response curves and A-Ci curves also suggested lower carbon assimilation capacities for the introduced Sonneratia than for the native mangrove species in both study sites. The lower light compensation point (LCP) of two introduced Sonneratia in both study sites also indicated a better adaptation to a low light regime than the native mangrove species. The results of photosynthetic capacities indicated that the introduced mangrove species have little competitive advantage over local native mangrove species in their respective new habitats.
KW - Sonneratia
KW - alien species
KW - competition
KW - gas exchange
KW - mangroves
KW - δC value
UR - http://www.scopus.com/inward/record.url?scp=50449100766&partnerID=8YFLogxK
U2 - 10.1016/j.ecss.2008.06.003
DO - 10.1016/j.ecss.2008.06.003
M3 - Article
AN - SCOPUS:50449100766
SN - 0272-7714
VL - 79
SP - 644
EP - 652
JO - Estuarine, Coastal and Shelf Science
JF - Estuarine, Coastal and Shelf Science
IS - 4
ER -