DOI: 10.1007/s10533-017-0376-z
Scopus记录号: 2-s2.0-85028999232
论文题名: Contributions of freshwater mussels (Unionidae) to nutrient cycling in an urban river: filtration, recycling, storage, and removal
作者: Hoellein T.J. ; Zarnoch C.B. ; Bruesewitz D.A. ; DeMartini J.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 135, 期: 3 起始页码: 307
结束页码: 324
语种: 英语
英文关键词: Biodeposits
; Bivalves
; Clearance rate
; Consumers
; Eutrophication
; Stoichiometry
Scopus关键词: aquatic ecosystem
; bivalve
; clearance rate
; denitrification
; eutrophication
; feeding behavior
; freshwater environment
; infiltration
; nutrient cycling
; pollutant removal
; river basin
; stoichiometry
; Chicago
; Illinois
; United States
; Bivalvia
; Lasmigona complanata
; Pyganodon grandis
; Unionidae
英文摘要: Consumers contribute to nutrient cycling in aquatic ecosystems by nutrient retention in tissues, metabolic transformations and excretion, and promoting microbial processes that remove nutrients (i.e., nitrogen (N) loss via denitrification). Freshwater mussels (Unionidae) form dense assemblages in rivers, and affect nutrient transformations through feeding, biodeposition, and bioturbation. However, the effects of Unionid mussels on N and phosphorus (P) retention are not commonly measured. We quantified rates of filtration, retention, and biodeposition of carbon (C), N, and P for two Unionid species: Lasmigona complanata and Pyganodon grandis. We used continuous-flow cores with 15N tracers to measure denitrification in sediments alone and with a single individual of each species. We conducted measurements in an urban river near Chicago, IL, USA that is a target for Unionid restoration. Both Unionid species showed high rates of P-specific feeding and retention, but low N-specific rates. This was in agreement with high N:P ratio in the water column. Each species significantly increased denitrification relative to sediment alone. 15N tracers suggested direct denitrification of nitrate increased denitrification, although enhanced coupled nitrification–denitrification likely also contributed to denitrification. Finally, denitrification rates with and without mussels were used to estimate the value of N loss under different scenarios for mussel restoration at the river scale. Overall, restored Unionid populations may enhance P retention in soft tissues and shells and N loss via denitrification. Ecosystem managers may find greater support for restoration of Unionid populations with careful calculations of their ecosystem role in nutrient retention and removal. © 2017, Springer International Publishing AG. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83234
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Biology, Loyola University Chicago, 1032 W Sheridan Rd, Chicago, IL, United States; Department of Natural Sciences, Baruch College and Graduate Center, City University of New York, 17 Lexington Ave, Box A-0506, New York, NY, United States; Environmental Studies Program, Colby College, 4000 Mayflower Hill, Waterville, ME, United States; Office of Natural Resources, Urban Stream Research Center, Forest Preserve District of DuPage County, Warrenville, IL, United States
Recommended Citation:
Hoellein T.J.,Zarnoch C.B.,Bruesewitz D.A.,et al. Contributions of freshwater mussels (Unionidae) to nutrient cycling in an urban river: filtration, recycling, storage, and removal[J]. Biogeochemistry,2017-01-01,135(3)