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Differences in leaf construction cost between alien and native mangrove species in Futian, Shenzhen, China: implications for invasiveness of alien species |
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| Authors: | Li Fenglan Yang Qiong Zan Qijie Tam Nora F Y Shin Paul K S Vrijmoed Lilian L P Cheung S G |
| Affiliation: | a Futian-CityU Mangrove Research and Development Centre, Futian National Nature Reserve, Mangrove Road, Shenzhen 518040, China b Neilingding-Futian National Nature Reserve of Guangdong, Futian National Nature Reserve, Mangrove Road, Shenzhen 518040, China c Shenzhen Municipal Administration Centre of Parks, Xinzhou Road, Shenzhen 518048, China d Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China |
| Abstract: | Construction cost (CC) is a quantifiable measure of energy demand for biomass production, and low CC is hypothesized to give an alien plant growth advantages and increase its potential to be an invader. Comparison of leaf CC and growth traits between alien and native mangroves in Shenzhen Futian Nature Reserve showed CC per unit mass (CCmass), carbon concentration and gross and ash-free caloric values of alien mangroves were significantly lower than those of native species, while the height and chest circumference were just the opposite. Alien species Sonneratia apetala had the lowest CCmass while Sonneratia caseolaris had the lowest CCarea, and were 8.99% and 32.17% lower than those of native species, respectively. Conversely, specific leaf area (SLA) of these two Sonneratia species was significantly higher than native species. Lower CC and higher SLA make the two Sonneratia species grow and spread faster than other mangroves and enhance their invasive potential. |
| Keywords: | Conservation Invasive potential Leaf construction cost Mangrove Sonneratia |
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