Limnology and Oceanography: Methods

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An empirically validated method for characterizing pelagic habitats in the Gulf of Mexico using ocean model data
Limnology and Oceanography: Methods - Tập 17 Số 6 - Trang 362-375 - 2019
Matthew W. Johnston, Rosanna Milligan, Cole Easson, Sergio deRada, David English, Bradley Penta, Tracey Sutton
AbstractMesoscale oceanic features such as eddies generate considerable environmental heterogeneity within the pelagic oceans, but their transient nature makes it difficult to identify both their spatial and temporal extent and their effects on the distribution of pelagic fauna. Simplifying these complex features using a biologically meaningful classification syste...... hiện toàn bộ
An approach to correct the effects of phytoplankton vertical nonuniform distribution on remote sensing reflectance of cyanobacterial bloom waters
Limnology and Oceanography: Methods - Tập 15 Số 3 - Trang 302-319 - 2017
Kun Xue, Yuchao Zhang, Ronghua Ma, Hongtao Duan
AbstractCyanobacterial blooms occur frequently in eutrophic lakes and their potentially harmful effects affected the security of drinking water and food sources, biodiversity, and economic activities, and attracted the attention of general public worldwide. Cyanobacteria could move vertically in the water column by regulating their buoyancy, which leads to the assu...... hiện toàn bộ
Relationship between wind speed and gas exchange over the ocean revisited
Limnology and Oceanography: Methods - Tập 12 Số 6 - Trang 351-362 - 2014
Rik Wanninkhof
The relationship between gas exchange and wind speed is used extensively for estimating bulk fluxes of atmospheric gases across the air‐sea interface. Here, I provide an update on the frequently used method of Wanninkhof (1992). The update of the methodology reflects advances that have occurred over the past two decades in quantifying the input parameters. The general principle of obtainin...... hiện toàn bộ
Inner filter correction of dissolved organic matter fluorescence
Limnology and Oceanography: Methods - Tập 11 Số 12 - Trang 616-630 - 2013
Dolly N. Kothawala, Kathleen R. Murphy, Colin A. Stedmon, Gesa A. Weyhenmeyer, Lars J. Tranvik
The fluorescence of dissolved organic matter (DOM) is suppressed by a phenomenon of self‐quenching known as the inner filter effect (IFE). Despite widespread use of fluorescence to characterize DOM in surface waters, the advantages and constraints of IFE correction are poorly defined. We assessed the effectiveness of a commonly used absorbance‐based approach (ABA), and a recently proposed ...... hiện toàn bộ
Application of the isotope pairing technique in sediments where anammox and denitrification coexist
Limnology and Oceanography: Methods - Tập 1 Số 1 - Trang 63-73 - 2003
Nils Risgaard‐Petersen, Lars Peter Nielsen, Søren Rysgaard, Tage Dalsgaard, Rikke Louise Meyer
The isotope pairing technique (IPT) is a well‐established 15N method for estimation of denitrification. Presence of anammox, the anaerobic oxidation of NH4+ to N2 with NO2− results in violation of central assumptions on which the IPT is built. It is shown that...... hiện toàn bộ
Online δ13C analysis of volatile fatty acids in sediment/porewater systems by liquid chromatography-isotope ratio mass spectrometry
Limnology and Oceanography: Methods - Tập 4 Số 10 - Trang 346-357 - 2006
Verena B. Heuer, Marcus Elvert, Stefanie Tille, Michael Krummen, Xavier Prieto Mollar, Laura R. Hmelo, Kai‐Uwe Hinrichs
A simple and efficient method for the solid‐phase extraction of dissolved organic matter (SPE‐DOM) from seawater
Limnology and Oceanography: Methods - Tập 6 Số 6 - Trang 230-235 - 2008
Thorsten Dittmar, Boris Koch, Norbert Hertkorn, Gerhard Kattner
A simple protocol is presented for the solid‐phase extraction of dissolved organic matter (SPE‐DOM) from seawater using commercially prepacked cartridges. The method does not require major instrumentation and can be performed in the field. Modified styrene divinyl benzene polymer type sorbents (Varian PPL and ENV) and sorbents of a silica structure bonded with different hydrocarbon chains ...... hiện toàn bộ
Evaluation of diagnostic pigments to estimate phytoplankton size classes
Limnology and Oceanography: Methods - Tập 18 Số 10 - Trang 570-584 - 2020
Alison Chase, Sasha J. Kramer, Nils Haëntjens, Emmanuel Boss, Lee Karp‐Boss, Mimi Edmondson, Jason R. Graff
AbstractPhytoplankton accessory pigments are commonly used to estimate phytoplankton size classes, particularly during development and validation of biogeochemical models and satellite ocean color‐based algorithms. The diagnostic pigment analysis (DPA) is based on bulk measurements of pigment concentrations and relies on assumptions regarding the presence of specif...... hiện toàn bộ
Application of cross‐flow ultrafiltration for isolating exopolymeric substances from a marine diatom (Amphora sp.)
Limnology and Oceanography: Methods - Tập 7 Số 6 - Trang 419-429 - 2009
Saijin Zhang, Peter H. Santschi
The increasing recognition of the roles that exopolymeric substances (EPS) play in the aquatic environment necessitates obtaining sufficient quantities of purified EPS for exploration of its physical, chemical, and biological properties, as well as for quantitative and structural analysis of its composition. For this purpose, three preconcentration/ purification techniques, i.e., 1) ethano...... hiện toàn bộ
An interlaboratory comparison for the quantification of aqueous dimethylsulfide
Limnology and Oceanography: Methods - Tập 12 Số 11 - Trang 784-794 - 2014
Hilton B. Swan, Paul Armishaw, Raluca Iavetz, Mahiuddin Alamgir, Stephen Davies, Thomas G. Bell, Graham B. Jones
An interlaboratory comparison (ILC) was conducted to evaluate the proficiency of multiple laboratories to quantify dimethylsulfide (DMS) in aqueous solution. Ten participating laboratories were each supplied with blind duplicate test solutions containing dimethylsulfoniopropionate hydrochloride (DMSP HCl) dissolved in acidified artificial seawater. The test solutions were prepared by the c...... hiện toàn bộ
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