globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-018-0438-x
Scopus记录号: 2-s2.0-85044096022
论文题名:
Two decades of tropical cyclone impacts on North Carolina’s estuarine carbon, nutrient and phytoplankton dynamics: implications for biogeochemical cycling and water quality in a stormier world
作者: Paerl H.W.; Crosswell J.R.; van Dam B.; Hall N.S.; Rossignol K.L.; Osburn C.L.; Hounshell A.G.; Sloup R.S.; Harding L.W.; Jr.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
起始页码: 1
结束页码: 26
语种: 英语
英文关键词: Carbon/nutrient cycling ; Coastal ; Estuarine ; North Carolina ; Phytoplankton ; Tropical cyclones
英文摘要: Coastal North Carolina (USA) has experienced 35 tropical cyclones over the past 2 decades; the frequency of these events is expected to continue in the foreseeable future. Individual storms had unique and, at times, significant hydrologic, nutrient-, and carbon (C)-loading impacts on biogeochemical cycling and phytoplankton responses in a large estuarine complex, the Pamlico Sound (PS) and Neuse River Estuary (NRE). Major storms caused up to a doubling of annual nitrogen and tripling of phosphorus loading compared to non-storm years; magnitudes of loading depended on storm tracks, forward speed, and precipitation in NRE-PS watersheds. With regard to C cycling, NRE-PS was a sink for atmospheric CO2 during dry, storm-free years and a significant source of CO2 in years with at least one storm, although responses were storm-specific. Hurricane Irene (2011) mobilized large amounts of previously-accumulated terrigenous C in the watershed, mainly as dissolved organic carbon, and extreme winds rapidly released CO2 to the atmosphere. Historic flooding after Hurricanes Joaquin (2015) and Matthew (2016) provided large inputs of C from the watershed, modifying the annual C balance of NRE-PS and leading to sustained CO2 efflux for months. Storm type affected biogeochemical responses as C-enriched floodwaters enhanced air–water CO2 exchange during ‘wet’ storms, while CO2 fluxes during ‘windy’ storms were largely supported by previously-accumulated C. Nutrient loading and flushing jointly influenced spatio-temporal patterns of phytoplankton biomass and composition. These findings suggest the importance of incorporating freshwater discharge and C dynamics in nutrient management strategies for coastal ecosystems likely to experience a stormier future. © 2018 Springer International Publishing AG, part of Springer Nature
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83171
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: Institute of Marine Sciences, University of North Carolina at Chapel Hill, Morehead City, NC, United States; CSIRO Oceans and Atmosphere, Ecosciences Precinct, Brisbane, QLD, Australia; Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, United States

Recommended Citation:
Paerl H.W.,Crosswell J.R.,van Dam B.,et al. Two decades of tropical cyclone impacts on North Carolina’s estuarine carbon, nutrient and phytoplankton dynamics: implications for biogeochemical cycling and water quality in a stormier world[J]. Biogeochemistry,2018-01-01
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