alexa
Reach Us +44-1764-910199
Native Phragmites Dieback Reduced Its Dominance In The Salt Marshes Invaded By Exotic Spartina In The Yangtze River Estuary, China | 9489
ISSN: 2155-9910

Journal of Marine Science: Research & Development
Open Access

Like us on:

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Native Phragmites dieback reduced its dominance in the salt marshes invaded by exotic Spartina in the Yangtze river estuary, China

International Conference on Oceanography & Natural Disasters

Hui Li, Junjiong Shao, Shiyun Qiu and Bo Li

Accepted Abstracts: J Marine Sci Res Dev

DOI: 10.4172/2155-9910.S1.004

Abstract
Vegetation dieback occurs frequently in various ecosystems and causes tremendous consequences. In the Yangtze estuary of China, the saltmarshes invaded by exotic Spartina alterniflora are experiencing native reed ( Phragmites australis ) dieback. How reed dieback affects the reed saltmarshes is largely unknown, given that the dieback is becoming more prevalent. Here we examined the impact of reed dieback on the saltmarshes invaded by Spartina through monitoring dynamics of component species of Phragmites-Spartina mixture, and comparing their performances in monoculture, dieback mixture and healthy mixture. Results showed that Phragmites performed more poorly in dieback mixture. Survival rate (30 ? 4.08%), ramet density (37 ? 9.15 plants/m 2 ), plant height (130.71 ? 20.39 cm) and aboveground biomass (222.64 ? 5.66 g/m 2 ) of Phragmites in dieback mixture were all significantly lower than those in healthy mixture (68 ? 4.79%; 99 ? 17.24 plants/m 2 ; 185.06 ? 17.75 cm; 837.07 ? 205.13 g/m 2 , respectively) (for all P<0.05). By contrast, Spartina resprouted well with survival rate of 100%. Both ramet density and plant height of Spartina tended to be higher in dieback mixture than in healthy mixture, and its aboveground biomass (1042.19 ? 156.46 g/m 2 ) was significantly higher than that in healthy mixture (618.76 ? 129.50 g/m 2 ) (P<0.05). Our study suggests that reduced dominance of native Phragmites due to its own dieback weakens its competitive ability relative to exotic Spartina , which favors Spartina invasion in the saltmarshes , and in turn makes the restoration of the saltmarshes invaded by Spartina more difficult.
Biography
Hui Li is a Ph.D. student at the age of 28 years from Fudan University. She is interested in ecosystem management and biological invasions. Recently, she focuses on the indirect effects of exotic plant species on the invaded ecosystem.
Top