caa a22 4500 445893370 CHVBK 20180317145623.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10750-011-0759-4 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0759-4 Observed dissolved and particulate nitrogen concentrations in a mini flume [Elektronische Daten] [Simon Ussher, Andrew Manning, Alan Tappin, Mark Fitzsimons] Previous measurements of the benthic nitrogen (N) flux from resuspended estuarine particles in the Thames Estuary appeared to underestimate benthic inputs. This study attempted to address experimental limitations by using a mini-annular flume. The flume has a 45l capacity and was prepared in order to facilitate trace chemical analysis of N. Sediment (S1) and suspended particulate material (SPM; S2) were collected from the Tamar Estuary, UK, and added to prepared, low-N, freshwater and seawater solutions to give a final particle concentration of 500mgl−1. Two tidal cycles were simulated and SPM and total dissolved N (TDN) were measured at a range of turbulent shear stresses (0.06-0.9Pa) representative of the sampling sites. A large increase in TDN concentration was measured after particle addition and initial mixing, due to release of loosely bound particulate N (PN). The TDN concentration increased as the experiment progressed (up to 12μM), but did not appear to be systematically linked to either salinity or SPM concentration. The flume system and experimental protocol provided reproducible physical data and low detection limits for TDN, which demonstrates its potential for studying relationships between estuarine particle transport and macronutrient cycles. Springer Science+Business Media B.V., 2011 Nitrogen nationallicence Resuspension nationallicence Flume nationallicence Thames nationallicence Tamar nationallicence Estuary nationallicence Ussher Simon Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut Manning Andrew Marine Physics Research Group, School of Marine Science and Engineering, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut Tappin Alan Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut Fitzsimons Mark Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut Hydrobiologia Springer Netherlands 672/1(2011-09-01), 69-77 0018-8158 672:1<69 2011 672 10750 https://doi.org/10.1007/s10750-011-0759-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0759-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ussher Simon Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut NATIONALLICENCE 700 1- Manning Andrew Marine Physics Research Group, School of Marine Science and Engineering, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut NATIONALLICENCE 700 1- Tappin Alan Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut NATIONALLICENCE 700 1- Fitzsimons Mark Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, PL4 8AA, Plymouth, UK aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 672/1(2011-09-01), 69-77 0018-8158 672:1<69 2011 672 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer