@article {wang_novel_2022, title = {A novel approach to discriminate sedimentary characteristics of deltaic tidal flats with terrestrial laser scanner: Results from a case study}, journal = {Sedimentology}, volume = {69}, year = {2022}, pages = {1626{\textendash}1648}, abstract = {Sediments in deltaic tidal flats regulate physical and chemical processes. Grain-size distribution plays an important role in determining sediment dynamics and substrate properties. However, it is challenging to quantify large-scale depositional environments in intertidal flats, due to time-consuming grain-size analyses and sparse sedimentary information extracted from scattered sediment samples. In this study, a novel terrestrial laser scanner (TLS) based method was developed to characterize the substrate of an intertidal flat. Surface sediment samples in the Nanhui flats in the Yangtze Delta, China, and the corresponding waveform amplitudes of TLS echoes at fixed sampling sites were collected for a total of 22 months. A negative logarithmic relationship was found between the sediment sand fraction, average grain size, D50, and corrected waveform amplitude of TLS echo in different hydro-meteorological conditions. The mean of average grain size of five sediment sampling sites along a transect was 58.78 μm when measured by traditional grain-size analysis, and 49.48 μm when calculated with the proposed logarithmic equation. The mean error at each site was up to 21.77\%. The mean error for the sand and silt fraction at each location was as high as 27.28\% and 21.75\%, respectively. The spatial distribution pattern of TLS-based average grain size in the entire study area was consistent with the measured pattern with a Root Mean Square Error of 13.83 μm. These errors could be caused by the accuracy of the TLS waveform amplitude correction and by limits of the method in recognizing different substrates. The effects produced by the presence of microphytobenthos (for example, cyanobacterial mats or diatom biofilms) or bedforms have not been investigated and may have affected the results. The TLS-based grain-size measurements can rapidly and effectively discriminate sediment characteristics, thus avoiding traditional time-consuming measurements. It is expected that the TLS-based method proposed here will have wide applications in shoreline studies, especially in inaccessible tidal flats.}, keywords = {Grain-size distribution, inversion, sediments, terrestrial laser scanner, tidal flats}, issn = {1365-3091}, doi = {10.1111/sed.12970}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/sed.12970}, author = {Wang, Jie and Dai, Zhijun and Fagherazzi, Sergio and Long, Chuqi} } @phdthesis {8662, title = {Nutrient influence on microbial structure and function within salt marsh sediments}, volume = {Ph.D.}, year = {2022}, school = {Northeastern University}, type = {phdthesis}, keywords = {community dynamics, LTER-PIE, microbes, nutrients, salt marsh, sediments}, author = {Vineis, J. H} } @mastersthesis {PIE495, title = {Quantifying and Valuing Carbon and Nitrogen Sequestration as Ecosystem Services in Salt Marshes.}, volume = {MS}, year = {2020}, note = {Grad}, school = {Villanova University}, type = {mastersthesis}, address = {Villanova, PA}, keywords = {carbon, inorganic nutrients, LTER-PIE, nitrogen, organic matter, salt marshes, sediments, sequestration}, author = {Demberger, S.} } @article {PIE476, title = {The Role of Waves, Shelf Slope, and Sediment Characteristics on the Development of Erosional Chenier Plains}, journal = {Geophysical Research Letters}, volume = {45}, year = {2018}, note = {PI}, pages = {8435-8444}, keywords = {chenier plains, disturbance, LTER-PIE, mudflats, sandy strandplains, sediments, wave energy}, doi = {10.1029/2018GL078694}, author = {Nardin, W. and Fagherazzi, S.} } @article {PIE366, title = {The relationships among hydrodynamics, sediment distribution, and chlorophyll in a mesotidal estuary.}, journal = {Estuarine and Coastal Shelf Science}, volume = {144}, year = {2014}, note = {PI Plum Data}, pages = {54-64}, keywords = {disturbance, hydrodynamics, LTER-PIE, microphytobenthos, primary production, sediments, tidal flats, tides, waves}, doi = {10.1016/j.ecss.2014.04.003}, author = {Fagherazzi, S. and Mariotti, G. and Banks, A.T. and Morgan, E.J. and Fulweiler, R.W.} } @thesis {PIE400, title = {The Effect of Physical and Biological Processes on the erosion of Cohesive Sediments}, volume = {B.S.}, year = {2013}, note = {Undergrad}, school = {Boston University}, type = {bachelorsthesis}, address = {Boston, MA}, keywords = {disturbance, erosion, LTER-PIE, salt marsh, sediments}, author = {Valentine, K.} } @article {PIE246, title = {The effects of salinity on nitrogen losses from an oligohaline estuarine sediment}, journal = {Estuaries and Coasts}, volume = {33}, year = {2010}, note = {PI Plum Data}, pages = {1054-1068}, keywords = {ammonium, benthic fluxes, benthic respiration, denitrification, disturbance, DNRA, estuaries, inorganic nutrients, LTER-PIE, sediments}, doi = {10.1007/s12237-010-9280-7}, author = {Giblin, A.E. and Weston, N.B. and Banta, G.T. and Tucker, J. and Hopkinson, C.S.} } @article {PIE245, title = {The effects of varying salinity on ammonium exchange in estuarine sediments of the Parker River, Massachusetts.}, journal = {Estuaries and Coasts}, volume = {33}, year = {2010}, note = {PI Plum Data}, pages = {985-1003}, keywords = {adsorption, ammonium exchange, disturbance, estuaries, inorganic nutrients, LTER-PIE, Parker River estuary, salinity, sediments}, doi = {10.1007/s12237-010-9282-5}, author = {Weston, N.B. and Giblin, A.E. and Banta, G. and Hopkinson, C.S. and Tucker, J.} } @article {PIE251, title = {Limits on the adaptability of coastal marshes to rising sea level}, journal = {Geophysical Research Letters}, volume = {37}, year = {2010}, note = {PI Plum Data}, keywords = {accretion, climate, disturbance, ecogeomorphology, estuaries, global change, LTER-PIE, salt marshes, sea level, sediments, vegetation, wetland}, doi = {10.1029/2010GL045489}, author = {Kirwan, M.L. and Guntenspergen, G.R. and D{\textquoteright}Alpaos, A. and Morris, J. T. and Mudd, S.M. and Temmerman, S.} }