DOI: 10.1029/2018JG004399
Scopus记录号: 2-s2.0-85049843625
论文题名: Effects of the Invasive Freshwater Mussel Limnoperna fortunei on Sediment Properties and Accumulation Rates
作者: Tokumon R. ; Boltovskoy D. ; Cataldo D.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 6 起始页码: 2002
结束页码: 2017
语种: 英语
英文关键词: impact, sediments
; Limnoperna fortunei
; Nitrogen
; organic matter
; Phosphorus
Scopus关键词: accumulation rate
; bivalve
; freshwater ecosystem
; invasive species
; nitrogen
; organic matter
; phosphorus
; sediment property
; stratification
; water temperature
; South America
; Bivalvia
; Limnoperna fortunei
; Pisces
英文摘要: Since its introduction into South America around 1990, the freshwater bivalve Limnoperna fortunei (the golden mussel) has spread rapidly and is now a dominant component of the benthic and periphytic fauna in many rivers, lakes, and reservoirs. Sizable impacts of this nonindigenous species on nutrient recycling, plankton abundance and composition, and trophic relationships with fishes have been reported, but its effects on the sediments have received little attention. In this work, we use eighteen 20-L flow-through experimental units with and without mussels where changes in the mass and characteristics of the sediments accumulated throughout a yearly cycle in monthly, biannual, and annual intervals are analyzed. Experimental units with mussels yielded almost 2 times more sediments than units without mussels and contained significantly higher loads of organic matter and total N. Total P was not affected by the presence of mussels. Sediments accumulated in the biannual and annual experimental units agreed well with the yields of the monthly units, but the vertical stratification of organic matter, N, and P was unpatterned. Seasonal changes in the volume of total sediments, biodeposits, and their organic matter and N contents were positively associated with ambient water temperature and with intermediate (~150–250 NTU, nephelometric turbidity units) turbidity. Our results suggest that ecosystem-wide modifications in the living conditions of the benthic epifaunal and infaunal organisms in waterbodies invaded by the mussel are likely significant, although variable locally, regionally, and across taxa. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113763
Appears in Collections: 气候减缓与适应
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作者单位: Instituto de Ecología, Genética y Evolución de Buenos Aires, Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina; Museo Argentino de Ciencias Naturales Bernardino Rivadavia-CONICET, Buenos Aires, Argentina
Recommended Citation:
Tokumon R.,Boltovskoy D.,Cataldo D.. Effects of the Invasive Freshwater Mussel Limnoperna fortunei on Sediment Properties and Accumulation Rates[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(6)