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- W3010816375 endingPage "101876" @default.
- W3010816375 startingPage "101876" @default.
- W3010816375 abstract "With the intensification of urban development, agriculture, and forestry, many coastal waters are becoming enriched with nitrogen (N). Long term, excess terrestrial N accumulates in the sediment porewaters impacting benthic fauna and microphytobenthic productivity, altering the complex bio-geophysical interactions that occur on the seafloor. These interactions may influence sediment erodibility and resuspension rates on the seafloor, which have wider ecosystem consequences through changes in water column turbidity, the fluxes of organic matter and sediment porewater nutrients into the water column, and the redistribution of deposited terrestrial materials (i.e. pollutants and sediment). We conducted a field experiment to explore how bio-geophysical interactions change in the context of porewater N enrichment. The experiment enriched plots (4 m2) on an intertidal sand flat in Tauranga Harbour, New Zealand, with three concentrations of N fertiliser (0, 150 and 600 g N m−2; n = 6). After 10 weeks, we collected intact sediments from the plots, and in the laboratory, subjected these sediments to sequential increases in water flow velocity (between 0.05 and 0.4 m s−1) using annular flumes (bed area = 0.17 m−2). We calculated sediment erosion rates and thresholds, measured fluxes of NH4+ and Chlorophyll a across the sediment-water interface and characterised the sediment properties and macrofaunal communities. We anticipated complex feedbacks to occur where porewater N enrichment would increase microphytobenthic biofilm growth, stabilising the sediments (and reducing benthic-pelagic coupling), but at the same time, N enrichment might also alter the macrofaunal community, which graze the microphytobenthos and physically mix the sediment, with a potential destabilising effect (and increase in benthic-pelagic coupling). Although our enriched treatments doubled the biomass of microphytobenthos, altered the macrofauna communities and enhanced the fluxes of Chlorophyll a and NH4+ across the sediment-water interface, sediment erosion thresholds and rates were unaffected. Our results highlight a potential mismatch between the micro- and macro-biotic processes and the larger scale physical forces on dynamic intertidal sandflats, and this mismatch has implications for our ability to scale up small scale processes to entire ecosystems." @default.
- W3010816375 created "2020-03-23" @default.
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- W3010816375 date "2020-04-01" @default.
- W3010816375 modified "2023-10-03" @default.
- W3010816375 title "Porewater nutrient enrichment alters benthic-pelagic coupling on intertidal sandflats" @default.
- W3010816375 cites W1754201478 @default.
- W3010816375 cites W1927835688 @default.
- W3010816375 cites W1953445342 @default.
- W3010816375 cites W1954050824 @default.
- W3010816375 cites W1965908017 @default.
- W3010816375 cites W1966154797 @default.
- W3010816375 cites W1975007802 @default.
- W3010816375 cites W1978499947 @default.
- W3010816375 cites W1983015196 @default.
- W3010816375 cites W1984748885 @default.
- W3010816375 cites W1989950111 @default.
- W3010816375 cites W1997887142 @default.
- W3010816375 cites W1998350284 @default.
- W3010816375 cites W1999209962 @default.
- W3010816375 cites W2002791920 @default.
- W3010816375 cites W2003787705 @default.
- W3010816375 cites W2004668113 @default.
- W3010816375 cites W2012016888 @default.
- W3010816375 cites W2013065531 @default.
- W3010816375 cites W2014687922 @default.
- W3010816375 cites W2015602918 @default.
- W3010816375 cites W2015605079 @default.
- W3010816375 cites W2016023362 @default.
- W3010816375 cites W2018052094 @default.
- W3010816375 cites W2018553671 @default.
- W3010816375 cites W2021655002 @default.
- W3010816375 cites W2022284807 @default.
- W3010816375 cites W2023042079 @default.
- W3010816375 cites W2031048319 @default.
- W3010816375 cites W2034209612 @default.
- W3010816375 cites W2034834373 @default.
- W3010816375 cites W2040766929 @default.
- W3010816375 cites W2049739897 @default.
- W3010816375 cites W2050878109 @default.
- W3010816375 cites W2053626154 @default.
- W3010816375 cites W2056162094 @default.
- W3010816375 cites W2058603773 @default.
- W3010816375 cites W2068517096 @default.
- W3010816375 cites W2068524878 @default.
- W3010816375 cites W2071809108 @default.
- W3010816375 cites W2074567091 @default.
- W3010816375 cites W2077303185 @default.
- W3010816375 cites W2080820040 @default.
- W3010816375 cites W2083335637 @default.
- W3010816375 cites W2088756675 @default.
- W3010816375 cites W2092685369 @default.
- W3010816375 cites W2093147319 @default.
- W3010816375 cites W2094520739 @default.
- W3010816375 cites W2099590238 @default.
- W3010816375 cites W2108318727 @default.
- W3010816375 cites W2112448118 @default.
- W3010816375 cites W2119550069 @default.
- W3010816375 cites W2126824891 @default.
- W3010816375 cites W2127337558 @default.
- W3010816375 cites W2128509875 @default.
- W3010816375 cites W2134536775 @default.
- W3010816375 cites W2138295453 @default.
- W3010816375 cites W2141932459 @default.
- W3010816375 cites W2152744233 @default.
- W3010816375 cites W2154803007 @default.
- W3010816375 cites W2156966967 @default.
- W3010816375 cites W2164224820 @default.
- W3010816375 cites W2166831611 @default.
- W3010816375 cites W2170949583 @default.
- W3010816375 cites W2190475949 @default.
- W3010816375 cites W2327754455 @default.
- W3010816375 cites W2329624080 @default.
- W3010816375 cites W2398619823 @default.
- W3010816375 cites W2474239891 @default.
- W3010816375 cites W2587254536 @default.
- W3010816375 cites W2587795268 @default.
- W3010816375 cites W2601162286 @default.
- W3010816375 cites W2735476192 @default.
- W3010816375 cites W2753182638 @default.
- W3010816375 cites W2770323765 @default.
- W3010816375 cites W2805130464 @default.
- W3010816375 cites W2907515853 @default.
- W3010816375 cites W2922371564 @default.
- W3010816375 cites W2970369370 @default.
- W3010816375 cites W2990182459 @default.
- W3010816375 doi "https://doi.org/10.1016/j.seares.2020.101876" @default.
- W3010816375 hasPublicationYear "2020" @default.
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