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The response of stocks of C, N, and P to plant invasion in the coastal wetlands of China
Wang, Weiqi (Fujian Normal University. Institute of Geography)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals)
Wang, Chun (Fujian Normal University. Key Laboratory of Wetland Ecology and Environment)
Zeng, Congsheng (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-geographical Process)
Tong, Chuan (Fujian Normal University. Institute of Geography)
Chen, Guixiang (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-geographical Process)
Huang, Jiafang (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-geographical Process)
Pan, Haoran (Guangxi Mangrove Research Center)
Peguero Gutiérrez, Guillermo (Centre de Recerca Ecològica i Aplicacions Forestals)
Vallicrosa Pou, Helena (Centre de Recerca Ecològica i Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals)

Date: 2019
Abstract: The increasing success of invasive plant species in wetland areas can threaten their capacity to store carbon, nitrogen, and phosphorus (C, N, and P). Here, we have investigated the relationships between the different stocks of soil organic carbon (SOC), and total C, N, and P pools in the plant–soil system from eight different wetland areas across the South‐East coast of China, where the invasive tallgrass Spartina alterniflora has replaced the native tall grasses Phragmites australis and the mangrove communities, originally dominated by the native species Kandelia obovata and Avicennia marina. The invasive success of Spartina alterniflora replacing Phragmites australis did not greatly influence soil traits, biomass accumulation or plant–soil C and N storing capacity. However, the resulting higher ability to store P in both soil and standing plant biomass (approximately more than 70 and 15 kg P by ha, respectively) in the invasive than in the native tall grass communities suggesting the possibility of a decrease in the ecosystem N:P ratio with future consequences to below‐ and aboveground trophic chains. The results also showed that a future advance in the native mangrove replacement by Spartina alterniflora could constitute a serious environmental problem. This includes enrichment of sand in the soil, with the consequent loss of nutrient retention capacity, as well as a sharp decrease in the stocks of C (2. 6 and 2. 2 t C ha‐1 in soil and stand biomass, respectively), N, and P in the plant–soil system. This should be associated with a worsening of the water quality by aggravating potential eutrophication processes. Moreover, the loss of carbon and nutrient decreases the potential overall fertility of the system, strongly hampering the reestablishment of woody mangrove communities in the future.
Note: Número d'acord de subvenció EC/FP7/610028
Note: Número d'acord de subvenció MINECO/CGL2016‐79835
Note: Número d'acord de subvenció AGAUR/2017/SGR-1005
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; acceptedVersion
Subject: Active carbon ; Nutrient stoichiometry ; Plant invasion ; Soil organic carbon
Published in: Global Change Biology, Vol. 25, Issue 2 (February 2019) , p. 733-743, ISSN 1365-2486

DOI: 10.1111/gcb.14491


Available from: 2020-02-28
Postprint

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
Articles > Research articles
Articles > Published articles

 Record created 2019-03-12, last modified 2019-04-08



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