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Sediment phosphorus speciation and retention process affected by invasion time of Spartina alterniflora in a subtropical coastal wetland of China.
Environ Sci Pollut Res Int. 2018 Dec; 25(35):35365-35375.ES

Abstract

In coastal wetland ecosystems, most phosphorus (P) accumulates in the sediments and becomes a major pollutant causing eutrophication by recycling to the water column in estuary areas, especially exotic plant invasions will change the nutrient cycling. In this study, a large wetland invaded by exotic species Spartina alterniflora for over 15 years was selected to study the sediment P fractionation and its retention for different plant invasion periods. The samples were collected from east to west in September and the sediment P was fractionated into total P (TP), inorganic P (IP), iron/aluminum-bound P (Fe/Al-P), calcium-bound P (Ca-P), and organic P (OP). Additionally, the effect of the invasion period on the wetland P fractionation based on space-time reciprocal principle was investigated. For different S. alterniflora invasion periods, the average TP concentration was 675.37 mg kg-1 with a range of 160.33-1071 mg kg-1. The IP concentration was in the range of 107.33-813.33 mg kg-1 (accounting for 54.4-79.5% of TP), of which Fe/Al-P and Ca-P represented up to 99.4%. In addition, the P retention (RP) was within 41.67-329.67 mg kg-1. We also found that TP, IP, Fe/Al-P, Ca-P, OP, and RP in sediments were negatively correlated with pH (p < 0.05), and were also significantly positively correlated (p < 0.01) with water content and electrical conductivity. There were positive correlations between the various forms of P in the sediments (p < 0.01). However, the most important finding was that invasion time of S. alterniflora had a direct effect on the P speciation and three stages were determined. In the first stage, S. alterniflora mainly consumed the OP of the sediment. In the second stage, S. alterniflora showed great vitality and biological immobilization led to the transforming of IP to OP. In the third stage, all P fractions greatly decreased to values even lower than for the bare beach which indicated that S. alterniflora growth had begun to degenerate. These three stages well explained the P seemingly contradictory increases and decreases apparent in previous studies and provide important information for understanding the effect of S. alterniflora invasion.

Authors+Show Affiliations

College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China. Key Laboratory of Pollution Control and Resource Recycling of Fujian Province, Fujian Normal University, Fuzhou, 350007, China.College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China.College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China. xierr1118@163.com. Key Laboratory of Pollution Control and Resource Recycling of Fujian Province, Fujian Normal University, Fuzhou, 350007, China. xierr1118@163.com.College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China.College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China. Key Laboratory of Pollution Control and Resource Recycling of Fujian Province, Fujian Normal University, Fuzhou, 350007, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30343371

Citation

Li, Jiabing, et al. "Sediment Phosphorus Speciation and Retention Process Affected By Invasion Time of Spartina Alterniflora in a Subtropical Coastal Wetland of China." Environmental Science and Pollution Research International, vol. 25, no. 35, 2018, pp. 35365-35375.
Li J, Lai Y, Xie R, et al. Sediment phosphorus speciation and retention process affected by invasion time of Spartina alterniflora in a subtropical coastal wetland of China. Environ Sci Pollut Res Int. 2018;25(35):35365-35375.
Li, J., Lai, Y., Xie, R., Ding, X., & Wu, C. (2018). Sediment phosphorus speciation and retention process affected by invasion time of Spartina alterniflora in a subtropical coastal wetland of China. Environmental Science and Pollution Research International, 25(35), 35365-35375. https://doi.org/10.1007/s11356-018-3447-3
Li J, et al. Sediment Phosphorus Speciation and Retention Process Affected By Invasion Time of Spartina Alterniflora in a Subtropical Coastal Wetland of China. Environ Sci Pollut Res Int. 2018;25(35):35365-35375. PubMed PMID: 30343371.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sediment phosphorus speciation and retention process affected by invasion time of Spartina alterniflora in a subtropical coastal wetland of China. AU - Li,Jiabing, AU - Lai,Yueting, AU - Xie,Rongrong, AU - Ding,Xiaoyan, AU - Wu,Chunshan, Y1 - 2018/10/20/ PY - 2018/08/20/received PY - 2018/10/10/accepted PY - 2018/10/22/pubmed PY - 2019/1/29/medline PY - 2018/10/22/entrez KW - Invasion KW - Minjing River estuary KW - Phosphorus KW - Retention KW - Sediment KW - Spartina alterniflora SP - 35365 EP - 35375 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 35 N2 - In coastal wetland ecosystems, most phosphorus (P) accumulates in the sediments and becomes a major pollutant causing eutrophication by recycling to the water column in estuary areas, especially exotic plant invasions will change the nutrient cycling. In this study, a large wetland invaded by exotic species Spartina alterniflora for over 15 years was selected to study the sediment P fractionation and its retention for different plant invasion periods. The samples were collected from east to west in September and the sediment P was fractionated into total P (TP), inorganic P (IP), iron/aluminum-bound P (Fe/Al-P), calcium-bound P (Ca-P), and organic P (OP). Additionally, the effect of the invasion period on the wetland P fractionation based on space-time reciprocal principle was investigated. For different S. alterniflora invasion periods, the average TP concentration was 675.37 mg kg-1 with a range of 160.33-1071 mg kg-1. The IP concentration was in the range of 107.33-813.33 mg kg-1 (accounting for 54.4-79.5% of TP), of which Fe/Al-P and Ca-P represented up to 99.4%. In addition, the P retention (RP) was within 41.67-329.67 mg kg-1. We also found that TP, IP, Fe/Al-P, Ca-P, OP, and RP in sediments were negatively correlated with pH (p < 0.05), and were also significantly positively correlated (p < 0.01) with water content and electrical conductivity. There were positive correlations between the various forms of P in the sediments (p < 0.01). However, the most important finding was that invasion time of S. alterniflora had a direct effect on the P speciation and three stages were determined. In the first stage, S. alterniflora mainly consumed the OP of the sediment. In the second stage, S. alterniflora showed great vitality and biological immobilization led to the transforming of IP to OP. In the third stage, all P fractions greatly decreased to values even lower than for the bare beach which indicated that S. alterniflora growth had begun to degenerate. These three stages well explained the P seemingly contradictory increases and decreases apparent in previous studies and provide important information for understanding the effect of S. alterniflora invasion. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30343371/Sediment_phosphorus_speciation_and_retention_process_affected_by_invasion_time_of_Spartina_alterniflora_in_a_subtropical_coastal_wetland_of_China_ L2 - https://dx.doi.org/10.1007/s11356-018-3447-3 DB - PRIME DP - Unbound Medicine ER -