Limits...
Use of exotic plants to control Spartina alterniflora invasion and promote mangrove restoration.

Zhou T, Liu S, Feng Z, Liu G, Gan Q, Peng S - Sci Rep (2015)

Bottom Line: I: In a mangrove area invaded by S. alterniflora, exotic S. apetala and S. caseolaris grew rapidly due to their relatively fast-growing character and an allelopathic effect.III: The growth of native mangrove was promoted because exotic plant seedlings cannot regenerate in the understory shade, whereas native mesophytic mangrove plants seedlings can grow; when the area experiences extreme low temperatures in winter or at other times, S. apetala dies, and native mangrove species grow to restore the communities.This model has important implications for addressing the worldwide problems of "how to implement the ecological control of invasion using exotic species" and "how to concurrently promote native community restoration during the control of exotic invasion".

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275.

ABSTRACT
In coastal China, the exotic invasive Spartina alterniflora is preventing the establishment of native mangroves. The use of exotic species, control of exotic plant invasion, and restoration of native plant communities are timely research issues. We used exotic Sonneratia apetala Buch.-Ham and S. caseolaris (L.) Engl. to control invasive Spartina alterniflora Loisel through replacement control for five years, which concurrently promoted the restoration of native mangroves. This process includes three stages. I: In a mangrove area invaded by S. alterniflora, exotic S. apetala and S. caseolaris grew rapidly due to their relatively fast-growing character and an allelopathic effect. II: Fast-growing S. apetala and S. caseolaris eradicate S. alterniflora through shading and allelopathy. III: The growth of native mangrove was promoted because exotic plant seedlings cannot regenerate in the understory shade, whereas native mesophytic mangrove plants seedlings can grow; when the area experiences extreme low temperatures in winter or at other times, S. apetala dies, and native mangrove species grow to restore the communities. This model has important implications for addressing the worldwide problems of "how to implement the ecological control of invasion using exotic species" and "how to concurrently promote native community restoration during the control of exotic invasion".

No MeSH data available.


Variations in light intensity under different types of plots (Lux, mean ± S.E., p < 0.05): (I) Spartina alterniflora plot; (II) Sonneratia apetala controls S. alterniflora plot; (III) S. apetala + S. caseolaris control S. alterniflora plot; (IV) 6–8-year-old mature S. apetala plot.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4542654&req=5

f5: Variations in light intensity under different types of plots (Lux, mean ± S.E., p < 0.05): (I) Spartina alterniflora plot; (II) Sonneratia apetala controls S. alterniflora plot; (III) S. apetala + S. caseolaris control S. alterniflora plot; (IV) 6–8-year-old mature S. apetala plot.

Mentions: The understory light intensity was reduced after five years of replacement control (Fig. 5). In the control plot of pure S. alterniflora, the understory light intensity reached 636.00 Lux. In plots II and III, the understory light intensities were 457.60 and 420.27 Lux, respectively, i.e., 71.94% and 66.08% of that in the S. alterniflora tidal flat without afforestation. The reductions in understory light intensity were 28.05% in plot II and 33.8% in plot III, showing significant differences (p < 0.05). Among the different plots, the lowest light intensity of 161.2 Lux was found in plot I; this minimal value amounts to 25.34% of that in plot I, showing a significant difference (p < 0.05). The regression analysis indicated the declining light intensity is a major factor in the reduction of S. alterniflora biomass (Fig. 6).


Use of exotic plants to control Spartina alterniflora invasion and promote mangrove restoration.

Zhou T, Liu S, Feng Z, Liu G, Gan Q, Peng S - Sci Rep (2015)

Variations in light intensity under different types of plots (Lux, mean ± S.E., p < 0.05): (I) Spartina alterniflora plot; (II) Sonneratia apetala controls S. alterniflora plot; (III) S. apetala + S. caseolaris control S. alterniflora plot; (IV) 6–8-year-old mature S. apetala plot.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4542654&req=5

f5: Variations in light intensity under different types of plots (Lux, mean ± S.E., p < 0.05): (I) Spartina alterniflora plot; (II) Sonneratia apetala controls S. alterniflora plot; (III) S. apetala + S. caseolaris control S. alterniflora plot; (IV) 6–8-year-old mature S. apetala plot.
Mentions: The understory light intensity was reduced after five years of replacement control (Fig. 5). In the control plot of pure S. alterniflora, the understory light intensity reached 636.00 Lux. In plots II and III, the understory light intensities were 457.60 and 420.27 Lux, respectively, i.e., 71.94% and 66.08% of that in the S. alterniflora tidal flat without afforestation. The reductions in understory light intensity were 28.05% in plot II and 33.8% in plot III, showing significant differences (p < 0.05). Among the different plots, the lowest light intensity of 161.2 Lux was found in plot I; this minimal value amounts to 25.34% of that in plot I, showing a significant difference (p < 0.05). The regression analysis indicated the declining light intensity is a major factor in the reduction of S. alterniflora biomass (Fig. 6).

Bottom Line: I: In a mangrove area invaded by S. alterniflora, exotic S. apetala and S. caseolaris grew rapidly due to their relatively fast-growing character and an allelopathic effect.III: The growth of native mangrove was promoted because exotic plant seedlings cannot regenerate in the understory shade, whereas native mesophytic mangrove plants seedlings can grow; when the area experiences extreme low temperatures in winter or at other times, S. apetala dies, and native mangrove species grow to restore the communities.This model has important implications for addressing the worldwide problems of "how to implement the ecological control of invasion using exotic species" and "how to concurrently promote native community restoration during the control of exotic invasion".

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275.

ABSTRACT
In coastal China, the exotic invasive Spartina alterniflora is preventing the establishment of native mangroves. The use of exotic species, control of exotic plant invasion, and restoration of native plant communities are timely research issues. We used exotic Sonneratia apetala Buch.-Ham and S. caseolaris (L.) Engl. to control invasive Spartina alterniflora Loisel through replacement control for five years, which concurrently promoted the restoration of native mangroves. This process includes three stages. I: In a mangrove area invaded by S. alterniflora, exotic S. apetala and S. caseolaris grew rapidly due to their relatively fast-growing character and an allelopathic effect. II: Fast-growing S. apetala and S. caseolaris eradicate S. alterniflora through shading and allelopathy. III: The growth of native mangrove was promoted because exotic plant seedlings cannot regenerate in the understory shade, whereas native mesophytic mangrove plants seedlings can grow; when the area experiences extreme low temperatures in winter or at other times, S. apetala dies, and native mangrove species grow to restore the communities. This model has important implications for addressing the worldwide problems of "how to implement the ecological control of invasion using exotic species" and "how to concurrently promote native community restoration during the control of exotic invasion".

No MeSH data available.